JP2852712B2 - Catalyst for synthesizing acrolein and acrylic acid and method for producing the same - Google Patents
Catalyst for synthesizing acrolein and acrylic acid and method for producing the sameInfo
- Publication number
- JP2852712B2 JP2852712B2 JP3234047A JP23404791A JP2852712B2 JP 2852712 B2 JP2852712 B2 JP 2852712B2 JP 3234047 A JP3234047 A JP 3234047A JP 23404791 A JP23404791 A JP 23404791A JP 2852712 B2 JP2852712 B2 JP 2852712B2
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- acrylic acid
- polymer compound
- molded
- acrolein
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Description
【０００１】[0001]
【産業上の利用分野】本発明は、機械的強度に優れたア
クロレイン及びアクリル酸合成用成型触媒又は担持触媒
及びその製造法並びにそれを用いたアクロレイン及びア
クリル酸の製造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded catalyst or a supported catalyst having excellent mechanical strength for synthesizing acrolein and acrylic acid, a process for producing the same, and a process for producing acrolein and acrylic acid using the same.
【０００２】[0002]
【従来の技術】一般に、工業的に用いられる成型触媒又
は担持触媒は、移動させたり、反応器に充填する際に粉
化・崩壊することがないよう、ある程度以上の機械的強
度を有する必要がある。触媒の機械的強度は成型圧力を
調節したり、成型又は担持の操作を工夫することで、あ
る程度は改善される。2. Description of the Related Art Generally, a molded catalyst or a supported catalyst used industrially needs to have a certain level of mechanical strength so as not to be powdered or collapsed when being moved or filled in a reactor. is there. The mechanical strength of the catalyst can be improved to some extent by adjusting the molding pressure or devising the molding or loading operation.
【０００３】しかし、このような方法で機械的強度を高
くした触媒は、概して、触媒の持つ比表面積が小さくな
ったり、反応に有効な細孔分布が制御できない等の理由
で、目的生成物の収率が低くなる欠点を有している。However, catalysts whose mechanical strength has been increased by such a method generally have a low specific surface area of the catalyst or cannot control the distribution of pores effective for the reaction because of the inability to control the pore distribution effective for the reaction. It has the disadvantage that the yield is low.
【０００４】従来、本目的のためにいくつかの方法が提
案されている。例えば、特開昭５７−１１９８３７号公
報には、オレフィンの酸化用触媒を成型する際に、セル
ロース、ポリビニルアルコール、ポリエチレングリコー
ル等を添加することにより、ある程度の機械的強度を有
し、かつ、高収率で目的生成物を製造することができる
触媒が得られることが報告されている。また、特開昭５
９−１７３１４０号公報には、担持触媒を調製する際に
助剤としてウィスカを用いることにより機械的強度を高
めることができると報告されている。Conventionally, several methods have been proposed for this purpose. For example, JP-A-57-119837 discloses that when a catalyst for olefin oxidation is molded, cellulose, polyvinyl alcohol, polyethylene glycol and the like are added to have a certain mechanical strength and a high mechanical strength. It is reported that a catalyst is obtained which can produce the desired product in yield. In addition, Japanese Unexamined Patent Publication No.
JP-A-9-173140 reports that the mechanical strength can be increased by using whiskers as an auxiliary agent when preparing a supported catalyst.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、触媒充填又
は移送時等に粉化・崩壊の少ない機械的強度に優れたア
クロレイン及びアクリル酸合成用成型触媒又は担持触媒
及びその製造法の提供を目的としている。SUMMARY OF THE INVENTION The present invention provides a molded catalyst or a supported catalyst for synthesizing acrolein and acrylic acid which is excellent in mechanical strength with less powdering and disintegration at the time of charging or transferring the catalyst, and a process for producing the same. The purpose is.
【０００６】[0006]
【課題を解決するための手段】本発明は、プロピレンを
分子状酸素により気相接触酸化してアクロレイン及びア
クリル酸を合成するための触媒物質を含有してなる成型
触媒又は担持触媒の少なくとも一部の表面が高い解重合
性を有する有機高分子化合物でコーティングされている
ことを特徴とするアクロレイン及びアクリル酸合成用触
媒及びその製造法にある。According to the present invention, there is provided at least a part of a molded catalyst or a supported catalyst containing a catalytic substance for synthesizing acrolein and acrylic acid by gas phase catalytic oxidation of propylene with molecular oxygen. A catalyst for synthesizing acrolein and acrylic acid, characterized in that the surface is coated with an organic polymer compound having high depolymerizability, and a method for producing the same.
【０００７】本発明において、成型触媒の場合、その形
状についてはとくに限定はなく、球状、円柱状、円筒
状、星型状等、通常の打錠機、押出成型機、転動造粒機
等で成型されるものが用いられる。また、担持触媒の場
合、担体の種類についてはとくに限定はなく、シリカ、
アルミナ、シリカ・アルミナ、マグネシア、チタニア等
の通常の担体が用いられる。また、その形状についても
とくに限定されるものではなく、球状、円柱状、円筒
状、板状等が挙げられる。In the present invention, in the case of a molded catalyst, the shape thereof is not particularly limited, and may be an ordinary tableting machine, an extruder, a rolling granulator, etc., such as a sphere, a column, a cylinder, and a star. What is molded by is used. In the case of a supported catalyst, the type of the carrier is not particularly limited, and silica,
Alumina, silica-alumina, magnesia, is usual carriers titania used. Further, the shape is not particularly limited, and examples thereof include a sphere, a column, a cylinder, and a plate.
【０００８】本発明では、成型触媒又は担持触媒の少な
くとも一部の表面を有機高分子化合物でコーティングし
ているので、触媒の機械的強度が著しく向上し、触媒の
移送及び反応器への充填時等の通常の作業、操作おける
触媒の粉化及び崩壊を著しく防ぐことができる。In the present invention, at least a part of the surface of the molded catalyst or the supported catalyst is coated with the organic polymer compound, so that the mechanical strength of the catalyst is remarkably improved, and the catalyst is transferred and charged into the reactor. It is possible to remarkably prevent the catalyst from being powdered and disintegrated during ordinary work and operation.
【０００９】コーティングされた高い解重合性を有する
有機高分子化合物は、加熱による分解又は燃焼により容
易に触媒より除去することができる。従って、触媒はコ
ーティングされた高分子化合物を反応開始前に除去する
ことにより、コーティングした高分子化合物の影響を何
ら受けることなく安定した性能を保持することができ
る。[0009] The coated organic polymer compound having high depolymerizability can be easily removed from the catalyst by decomposition or combustion by heating. Therefore, the catalyst can maintain stable performance without being affected by the coated polymer compound by removing the coated polymer compound before starting the reaction.
【００１０】一般に、高分子化合物を熱分解するために
はかなりの高温を要する。また、酸素存在下で燃焼させ
ると大きな発熱を起こし、触媒自体を損傷させる場合も
ある。しかし、高い解重合性を有する高分子化合物は、
比較的低い温度で単量体に分解し気化蒸発する。すなわ
ち、加熱による除去の操作を触媒に対しより安全に行う
ことができる。Generally, a high temperature is required to thermally decompose a polymer compound. Further, burning in the presence of oxygen generates a large amount of heat, which may damage the catalyst itself. However, polymer compounds having high depolymerization properties
Decomposes into monomers at relatively low temperatures and evaporates. That is, the removal operation by heating can be performed more safely on the catalyst.
【００１１】高い解重合性を有する高分子化合物として
は、触媒に対して無害であり、かつ、安価な溶媒に容易
に溶解するものが好ましく、ポリスチレン、ポリ−α−
メチルスチレン及びポリメタクリル酸メチル等が挙げら
れる。これらの化合物は単独で用いても混合して用いて
も良い。As the polymer compound having a high depolymerization property, those which are harmless to the catalyst and are easily dissolved in an inexpensive solvent are preferable.
Examples include methylstyrene and polymethyl methacrylate. These compounds may be used alone or as a mixture.
【００１２】本発明において、コーティングする有機高
分子化合物の使用量は、成型触媒又は担持触媒に対し
０．１〜４０重量％が適当である。使用量が少量過ぎる
と強度向上の効果が低下する。また、この範囲を越える
多量のコーティングは経済的に不利である。In the present invention, the amount of the organic polymer compound to be coated is suitably from 0.1 to 40% by weight based on the molding catalyst or the supported catalyst. The amount used is too small an amount the effect of improving the strength is lowered. Also, large amounts of coating beyond this range are economically disadvantageous.
【００１３】高い解重合性を有する有機高分子化合物を
成型触媒又は担持触媒にコーティングするには、該高分
子化合物を溶媒に溶解した溶液を霧状にして成型触媒又
は担持触媒に付着させるか、もしくは該溶液に成型触媒
又は担持触媒を浸漬することにより付着させ、その後、
溶媒を気化蒸発させる方法を用いると、容易にかつ均一
にコーティングすることができる。ただし、この際、溶
液中の高分子化合物の濃度が高過ぎると、溶液の粘度が
高くなり成型触媒又は担持触媒どうしが粘着し操作上困
難を招くので、溶液中の高分子化合物の濃度は１〜３０
重量％の範囲を用いることが好ましい。In order to coat an organic polymer compound having a high depolymerization property on a molding catalyst or a supported catalyst, a solution in which the polymer compound is dissolved in a solvent is atomized and attached to the molding catalyst or the supported catalyst. Alternatively, the molded catalyst or the supported catalyst is attached to the solution by immersion, and thereafter,
When a method of evaporating and evaporating the solvent is used, coating can be easily and uniformly performed. However, at this time, if the concentration of the polymer compound in the solution is too high, the viscosity of the solution increases, and the molded catalyst or the supported catalyst sticks to each other, causing operational difficulties. ~ 30
It is preferred to use a weight percent range.
【００１４】本発明で用いるアクロレイン及びアクリル
酸合成用の触媒は、一般式 ＭｏａＢｉｂＦｅｃＡｄＸｅＹｆＺｇＳｉｈＯｉ （式中、Ｍｏ、Ｂｉ、Ｆｅ、Ｓｉ及びＯはそれぞれモリ
ブデン、ビスマス、鉄、ケイ素及び酸素を表し、Ａはニ
ッケル及び／又はコバルト、Ｘはマグネシウム、亜鉛、
マンガン、スズ及び鉛からなる群より選ばれた少なくと
も１種の元素、Ｙはリン、ホウ素、イオウ、テルル、セ
レン、ゲルマニウム、タングステン及びアンチモンから
なる群より選ばれた少なくとも１種の元素、Ｚはカリウ
ム、ナトリウム、セシウム、ルビジウム及びタリウムか
らなる群より選ばれた少なくとも１種の元素を示す。た
だし、ａ、ｂ、ｃ、ｄ、ｅ、ｆ、ｇ、ｈ及びｉは各元素
の原子比を表わし、ａ＝１２のとき、０．０１≦ｂ≦
３、０．０１≦ｃ≦５、１≦ｄ≦１２、０≦ｅ≦５、０
≦ｆ≦５、０．００１≦ｇ≦１、０≦ｈ≦２０でありｉ
は前記各成分の原子価を満足するのに必要な酸素原子数
である。）で示される組成を有することが好ましい。The catalyst for synthesizing acrolein and acrylic acid used in the present invention has a general formula MoaBibFecAdXeYfZgSihOi (where Mo, Bi, Fe, Si and O represent molybdenum, bismuth, iron, silicon and oxygen, respectively, and A represents nickel And / or cobalt, X is magnesium, zinc,
At least one element selected from the group consisting of manganese, tin and lead, Y is at least one element selected from the group consisting of phosphorus, boron, sulfur, tellurium, selenium, germanium, tungsten and antimony, Z is It represents at least one element selected from the group consisting of potassium, sodium, cesium, rubidium and thallium. However, a, b, c, d, e, f, g, h and i represent the atomic ratio of each element, and when a = 12, 0.01 ≦ b ≦
3, 0.01 ≦ c ≦ 5, 1 ≦ d ≦ 12, 0 ≦ e ≦ 5, 0
≦ f ≦ 5, 0.001 ≦ g ≦ 1, 0 ≦ h ≦ 20 and i
Is the number of oxygen atoms necessary to satisfy the valence of each component. ).
【００１５】本発明において、触媒成分である元素の原
料としては特に限定されるものではないが、通常は酸化
物又は強熱することにより酸化物に成り得る塩化物、硫
酸塩、硝酸塩、炭酸塩、アンモニウム塩又はそれらの混
合物が用いられる。In the present invention, the raw material of the element which is a catalyst component is not particularly limited, but is usually an oxide or a chloride, a sulfate, a nitrate, or a carbonate which can be turned into an oxide when heated. , Ammonium salts or mixtures thereof.
【００１６】[0016]
【実施例】本発明を以下実施例により示す。文中の
「部」は重量部を意味する。成型触媒又は担持触媒の充
填時における落下粉化率及び形状変化率は以下のように
定義される。すなわち、触媒体ａ個、重量ｂ部を水平方
向に対して垂直に設置した内径３ｃｍ、長さ５ｍのステ
ンレス製円筒容器上部より充填し、落下充填後、容器底
部より回収された触媒のうち、１４メッシュのふるいを
通過しないものがｃ個、重量ｄ部であったとする。The present invention will be illustrated by the following examples. “Parts” in the text means parts by weight. The falling powder ratio and the shape change ratio at the time of filling the molded catalyst or the supported catalyst are defined as follows. That is, a catalyst body a and a weight b part were filled vertically from a horizontal direction with respect to a stainless steel cylindrical container having an inner diameter of 3 cm and a length of 5 m. It is assumed that c pieces and d weight parts do not pass through the 14 mesh sieve.
【００１７】[0017]
【数１】 (Equation 1)
【００１８】[0018]
【数２】 (Equation 2)
【００１９】〔実施例１〕下記の組成の触媒粉末を調製
した。 Ｍｏ12Ｗ0.1 Ｂｉ0.9 Ｆｅ1.2 Ｃｏ4 Ｎｉ0.5 Ｚｎ0.1
Ｍｇ0.5Ｂ0.2 Ｓｂ0.3 Ｋ0.06Ｓｉ3 Ｏｘ （式中、Ｍｏ、Ｗ、Ｂｉ、Ｆｅ、Ｃｏ、Ｎｉ、Ｚｎ、Ｍ
ｇ、Ｂ、Ｓｂ、Ｋ、Ｓｉ及びＯはそれぞれモリブデン、
タングステン、ビスマス、鉄、コバルト、ニッケル、亜
鉛、マグネシウム、ホウ素、アンチモン、カリウム、ケ
イ素及び酸素を表わす。また、元素記号右下併記の数字
は各元素の原子比であり、ｘは前記各成分の原子価を満
足するのに必要な酸素原子数である。）この触媒粉末９
７部をグラファイト粉末３部とよく混合した後、外径４
ｍｍ、内径２ｍｍ、高さ４ｍｍの円筒形に打錠成型し
た。Example 1 A catalyst powder having the following composition was prepared. Mo 12 W 0.1 Bi 0.9 Fe 1.2 Co 4 Ni 0.5 Zn 0.1
Mg 0.5 B 0.2 Sb 0.3 K 0.06 Si 3 Ox (where Mo, W, Bi, Fe, Co, Ni, Zn, M
g, B, Sb, K, Si and O are molybdenum,
Represents tungsten, bismuth, iron, cobalt, nickel, zinc, magnesium, boron, antimony, potassium, silicon and oxygen. The numbers in the lower right of the element symbols are the atomic ratios of the respective elements, and x is the number of oxygen atoms necessary to satisfy the valence of each component. ) This catalyst powder 9
After 7 parts are mixed well with 3 parts of graphite powder,
It was tableted into a cylinder having a diameter of 2 mm, an inner diameter of 2 mm and a height of 4 mm.
【００２０】別に、トルエン１６０部にポリ−α−メチ
ルスチレン４０部を溶解し、よく撹拌した（Ａ液）。前
記で得られた成型触媒１００部を室温下でＡ液に１時間
浸漬し、続いてよく液切りした後、１３５℃で１０時間
乾燥し溶媒を完全に蒸発させた。得られたコーティング
触媒の重量は１０４．７部であった。Separately, 40 parts of poly-α-methylstyrene was dissolved in 160 parts of toluene and stirred well (Solution A). 100 parts of the shaped catalyst obtained above was immersed in the solution A for 1 hour at room temperature, and then the solution was thoroughly drained, and then dried at 135 ° C. for 10 hours to completely evaporate the solvent. The weight of the obtained coating catalyst was 104.7 parts.
【００２１】本コーティング触媒を固定床流通式反応器
に充填し、窒素流通下で３８０℃、３時間処理した後、
更に空気流通下で３８０℃、３時間処理した。続いてプ
ロピレン５％、酸素１２％、水蒸気１０％、窒素７３％
（容量％）の混合ガスを反応温度３１０℃、接触時間
３．６秒で通じた。生成物を捕集し、ガスクロマトグラ
フィーで分析したところ、プロピレンの反応率９８．５
％、アクロレインの選択率８８．８％、アクリル酸の選
択率６．０％であった。ただし、プロピレンの反応率、
アクロレイン及びアクリル酸の選択率は以下のように定
義される。The coated catalyst is packed in a fixed bed flow reactor and treated at 380 ° C. for 3 hours under a nitrogen flow.
Furthermore, it processed at 380 degreeC for 3 hours under air circulation. Then 5% propylene, 12% oxygen, 10% steam, 73% nitrogen
(Volume%) of the mixed gas was passed at a reaction temperature of 310 ° C. for a contact time of 3.6 seconds. When the product was collected and analyzed by gas chromatography, the conversion of propylene was 98.5.
%, Acrolein selectivity was 88.8%, and acrylic acid selectivity was 6.0%. However, the conversion of propylene,
The selectivities of acrolein and acrylic acid are defined as follows.
【００２２】[0022]
【数３】 (Equation 3)
【００２３】[0023]
【数４】 (Equation 4)
【００２４】[0024]
【数５】 (Equation 5)
【００２５】本発明コーティング触媒５０ｇを用いて落
下粉化率及び形状変化率を測定したところ、夫々０．５
％及び１．９％であった。When 50 g of the coating catalyst of the present invention was used to measure the falling powdering ratio and the shape change ratio, the ratio was 0.5
% And 1.9%.
【００２６】〔比較例１〕実施例１と同様にして得られ
た成型触媒をポリ−α−メチルスチレンでコーティング
することなく、ただし、粉化が生じないように丁寧に扱
って反応器に充填し、実施例１と同様にしてプロピレン
の酸化反応を行ったところ、プロピレンの反応率９８．
５％、アクロレインの選択率８８．８％、アクリル酸の
選択率６．０％であり、コーティング処理したものと比
べ、反応成績は変わらなかった。また、落下粉化率及び
形状変化率を測定したところ、各々４．５％及び１９．
６％であり、コーティング処理したものと比べ、著しく
低強度であった。Comparative Example 1 A molded catalyst obtained in the same manner as in Example 1 was not coated with poly-α-methylstyrene, but was carefully treated so as not to cause powdering and charged into a reactor. Then, when the oxidation reaction of propylene was carried out in the same manner as in Example 1, the conversion of propylene was 98.
The selectivity of acrolein was 58.8%, the selectivity of acrylic acid was 6.0%, and the selectivity of acrylic acid was 6.0%. Further, when the falling powder ratio and the shape change ratio were measured, they were 4.5% and 19.
6%, which was significantly lower than that of the coating.
【００２７】〔実施例２〕下記の組成の触媒粉末を調製
した。Ｍｏ12Ｗ0.2 Ｂｉ1 Ｆｅ1.1 Ｃｏ4.5 Ｍｎ0.1 Ｔ
ｌ0.04Ｐ0.15Ｓｉ10Ｏｘ（式中、Ｍｏ、Ｗ、Ｂｉ、Ｆ
ｅ、Ｃｏ、Ｍｎ、Ｔｌ、Ｐ、Ｓｉ及びＯはそれぞれモリ
ブデン、タングステン、ビスマス、鉄、コバルト、マン
ガン、タリウム、リン、ケイ素及び酸素を表わす。ま
た、元素記号右下併記の数字は各元素の原子比であり、
ｘは前記各成分の原子価を満足するのに必要な酸素原子
数である。）この触媒粉末９７部をグラファイト粉末３
部とよく混合した後、直径４ｍｍ、高さ４ｍｍの円柱形
に打錠成型した。Example 2 A catalyst powder having the following composition was prepared. Mo 12 W 0.2 Bi 1 Fe 1.1 Co 4.5 Mn 0.1 T
l 0.04 P 0.15 Si 10 Ox (where Mo, W, Bi, F
e, Co, Mn, Tl, P, Si and O represent molybdenum, tungsten, bismuth, iron, cobalt, manganese, thallium, phosphorus, silicon and oxygen, respectively. Also, the numbers in the lower right of the element symbol indicate the atomic ratio of each element,
x is the number of oxygen atoms necessary to satisfy the valence of each component. ) 97 parts of this catalyst powder were mixed with graphite powder 3
After that, the mixture was thoroughly tableted into a column having a diameter of 4 mm and a height of 4 mm.
【００２８】別に、酢酸エチル１７０部にポリアクリル
酸メチル３０部を溶解し、よく撹拌した（Ａ液）。前記
で得られた成型触媒１００部を室温下でＡ液に２０分間
浸漬し、続いてよく液切りした後、１３５℃で１０時間
乾燥し溶媒を完全に蒸発させた。得られたコーティング
触媒の重量は１０３．８部であった。このコーティング
触媒５０ｇを用いて落下粉化率及び形状変化率を測定し
たところ、各々０．３％及び１．４％であった。この触
媒の反応成績はコーティング処理しない触媒と同等であ
り、コーティングによる悪影響はなかった。Separately, 30 parts of polymethyl acrylate was dissolved in 170 parts of ethyl acetate and stirred well (Solution A). 100 parts of the molded catalyst obtained above was immersed in the solution A for 20 minutes at room temperature, and then the solution was thoroughly drained, and dried at 135 ° C. for 10 hours to completely evaporate the solvent. The weight of the obtained coating catalyst was 103.8 parts. When 50 g of the coating catalyst was used to measure the falling powder ratio and the shape change ratio, they were 0.3% and 1.4%, respectively. The reaction results of this catalyst were equivalent to those of the catalyst without coating treatment, and there was no adverse effect of coating.
【００２９】〔比較例２〕実施例２と同様にして得られ
た成型触媒をポリアクリル酸メチルでコーティングする
ことなくそのまま用いて、実施例２と同様にして落下粉
化率及び形状変化率を測定したところ、各々２．８％及
び１３．２％であった。Comparative Example 2 Using the molded catalyst obtained in the same manner as in Example 2 without coating with polymethyl acrylate, the falling powder rate and the shape change rate were determined in the same manner as in Example 2. The measured values were 2.8% and 13.2%, respectively.
【００３０】〔実施例３〕下記の組成の触媒粉末を調製
した。 Ｍｏ12Ｗ0.2 Ｂｉ1 Ｆｅ0.9 Ｎｉ4 Ｚｎ0.2 Ｐｂ0.2 Ｔ
ｅ0.1 Ｓｅ0.01Ｋ0.04Ｎａ0.02Ｏｘ（式中、Ｍｏ、Ｗ、
Ｂｉ、Ｆｅ、Ｎｉ、Ｚｎ、Ｐｂ、Ｔｅ、Ｓｅ、Ｋ、Ｎａ
及びＯはそれぞれモリブデン、タングステン、ビスマ
ス、鉄、ニッケル、亜鉛、鉛、テルル、セレン、カリウ
ム、ナトリウム及び酸素を表わす。また、元素記号右下
併記の数字は各元素の原子比であり、ｘは前記各成分の
原子価を満足するのに必要な酸素原子数である。）この
触媒粉末２０部を直径３ｍｍの球状シリカ担体８０部に
担持した。Example 3 A catalyst powder having the following composition was prepared. Mo 12 W 0.2 Bi 1 Fe 0.9 Ni 4 Zn 0.2 Pb 0.2 T
e 0.1 Se 0.01 K 0.04 Na 0.02 Ox (where Mo, W,
Bi, Fe, Ni, Zn, Pb, Te, Se, K, Na
And O represent molybdenum, tungsten, bismuth, iron, nickel, zinc, lead, tellurium, selenium, potassium, sodium and oxygen, respectively. The numbers in the lower right of the element symbols are the atomic ratios of the respective elements, and x is the number of oxygen atoms necessary to satisfy the valence of each component. 20) This catalyst powder was supported on 80 parts of a spherical silica carrier having a diameter of 3 mm.
【００３１】別に、エチルメチルケトン１７８部にポリ
スチレン２２部を溶解し、よく撹拌した（Ａ液）。前記
で得られた担持触媒１００部に室温下でＡ液２０部を霧
状にして付着させ、続いて１３５℃で１０時間乾燥し溶
媒を完全に蒸発させた。得られたコーティング触媒の重
量は１０３．５部であった。このコーティング触媒５０
ｇを用いて落下粉化率を測定したところ、０．１％であ
った。Separately, 22 parts of polystyrene was dissolved in 178 parts of ethyl methyl ketone and stirred well (Solution A). At room temperature, 20 parts of solution A was adhered to 100 parts of the supported catalyst obtained above in the form of a mist at room temperature, followed by drying at 135 ° C. for 10 hours to completely evaporate the solvent. The weight of the obtained coating catalyst was 103.5 parts. This coating catalyst 50
The fall pulverization rate was measured using g, and was 0.1%.
【００３２】〔比較例３〕実施例３と同様にして得られ
た担持触媒をポリスチレンでコーティングすることなく
そのまま用いて、実施例３と同様にして落下粉化率を測
定したところ、１．８％であった。Comparative Example 3 Using the supported catalyst obtained in the same manner as in Example 3 without coating it with polystyrene, the drop powdering ratio was measured in the same manner as in Example 3, and was 1.8. %Met.
【００３３】〔実施例４〕下記の組成の触媒粉末を調製
した。Ｍｏ12Ｂｉ1.1 Ｆｅ1 Ｃｏ4 Ｚｎ0.5 Ｓｎ0.5 Ｓ
0.03Ｇｅ0.1 Ｓｂ0.1Ｃｓ0.02Ｒｂ0.02Ｏｘ（式中、Ｍ
ｏ、Ｂｉ、Ｆｅ、Ｃｏ、Ｚｎ、Ｓｎ、Ｓ、Ｇｅ、Ｓｂ、
Ｃｓ、Ｒｂ及びＯはそれぞれモリブデン、ビスマス、
鉄、コバルト、亜鉛、スズ、イオウ、ゲルマニウム、ア
ンチモン、セシウム、ルビジウム及び酸素を表わす。ま
た、元素記号右下併記の数字は各元素の原子比であり、
ｘは前記各成分の原子価を満足するのに必要な酸素原子
数である。）この触媒粉末に少量の水を加えよく混合し
た後、押出成型機により、直径４ｍｍ、高さ６ｍｍの円
柱形に成型し、続いて１１０℃で１０時間乾燥した。Example 4 A catalyst powder having the following composition was prepared. Mo 12 Bi 1.1 Fe 1 Co 4 Zn 0.5 Sn 0.5 S
0.03 Ge 0.1 Sb 0.1 Cs 0.02 Rb 0.02 Ox (where M
o, Bi, Fe, Co, Zn, Sn, S, Ge, Sb,
Cs, Rb and O are molybdenum, bismuth,
Represents iron, cobalt, zinc, tin, sulfur, germanium, antimony, cesium, rubidium and oxygen. Also, the numbers in the lower right of the element symbol indicate the atomic ratio of each element,
x is the number of oxygen atoms necessary to satisfy the valence of each component. After adding a small amount of water to the catalyst powder and mixing well, the mixture was molded into a cylindrical shape having a diameter of 4 mm and a height of 6 mm by an extruder, and then dried at 110 ° C. for 10 hours.
【００３４】別に、アセトン１６８部にポリメタクリル
酸メチル３２部を溶解し、よく撹拌した（Ａ液）。前記
で得られた成型触媒１００部を室温下でＡ液に２０分間
浸漬し、続いてよく液切りした後、１２０℃で１０時間
乾燥し溶媒を完全に蒸発させた。得られたコーティング
触媒の重量は１０３．７部であった。このコーティング
触媒５０ｇを用いて落下粉化率及び形状変化率を測定し
たところ、各々０．３％及び１．５％であった。Separately, 32 parts of polymethyl methacrylate was dissolved in 168 parts of acetone and stirred well (Solution A). 100 parts of the shaped catalyst obtained above was immersed in the solution A for 20 minutes at room temperature, and then the solution was thoroughly drained, and then dried at 120 ° C. for 10 hours to completely evaporate the solvent. The weight of the obtained coating catalyst was 103.7 parts. When 50 g of the coating catalyst was used to measure the falling powder ratio and the shape change ratio, they were 0.3% and 1.5%, respectively.
【００３５】〔比較例４〕実施例４と同様にして得られ
た成型触媒をポリメタクリル酸メチルでコーティングす
ることなくそのまま用いて、実施例４と同様にして落下
粉化率及び形状変化率を測定したところ、各々１．９％
及び７．１％であった。Comparative Example 4 Using the molded catalyst obtained in the same manner as in Example 4 without coating it with poly (methyl methacrylate), the dropping powder rate and the shape change rate were determined in the same manner as in Example 4. When measured, each was 1.9%
And 7.1%.
【００３６】〔実施例５〕下記の組成の触媒粉末を調製
した。 Ｍｏ12Ｂｉ1 Ｆｅ1 Ｃｏ4 Ｋ0.06Ｏｘ （式中、Ｍｏ、Ｂｉ、Ｆｅ、Ｃｏ、Ｋ及びＯはそれぞれ
モリブデン、ビスマス、鉄、コバルト、カリウム及び酸
素を表わす。また、元素記号右下併記の数字は各元素の
原子比であり、ｘは前記各成分の原子価を満足するのに
必要な酸素原子数である。）この触媒粉末に少量の水を
加えよく混合した後、押出成型機により、外径５ｍｍ、
内径２ｍｍ、高さ８ｍｍの円筒形に成型し、続いて１１
０℃で１０時間乾燥した。Example 5 A catalyst powder having the following composition was prepared. Mo 12 Bi 1 Fe 1 Co 4 K 0.06 Ox (wherein, Mo, Bi, Fe, Co, K and O represent molybdenum, bismuth, iron, cobalt, potassium and oxygen, respectively. The numbers are the atomic ratios of each element, and x is the number of oxygen atoms required to satisfy the valence of each component.) After adding a small amount of water to this catalyst powder and mixing well, an extruder was used. , Outer diameter 5mm,
It is molded into a cylindrical shape with an inner diameter of 2 mm and a height of 8 mm.
Dry at 0 ° C. for 10 hours.
【００３７】別にアセトン１７２部にポリメタクリル酸
イソブチル２８部を溶解し、よく撹拌した（Ａ液）。前
記で得られた成型触媒１００部を室温下でＡ液に２０分
間浸漬し、続いてよく液切りした後、１２０℃で８時間
乾燥し溶媒を完全に蒸発させた。得られたコーティング
触媒の重量は１０３．１部であった。このコーティング
触媒５０ｇを用いて落下粉化率及び形状変化率を測定し
たところ、各々０．４％及び１．８％であった。Separately, 28 parts of polybutyl methacrylate was dissolved in 172 parts of acetone and stirred well (Solution A). 100 parts of the molded catalyst obtained above was immersed in the solution A for 20 minutes at room temperature, and then the solution was thoroughly drained, and then dried at 120 ° C. for 8 hours to completely evaporate the solvent. The weight of the obtained coating catalyst was 103.1 parts. When 50 g of the coating catalyst was used to measure the falling powder ratio and the shape change ratio, they were 0.4% and 1.8%, respectively.
【００３８】〔比較例５〕実施例５と同様にして得られ
た成型触媒をポリメタクリル酸イソブチルでコーティン
グすることなくそのまま用いて、実施例５と同様にして
落下粉化率及び形状変化率を測定したところ、各々２．
２％及び９．３％であった。[Comparative Example 5] Using the molded catalyst obtained in the same manner as in Example 5 without coating it with polyisobutyl methacrylate, the falling powder ratio and the shape change ratio were determined in the same manner as in Example 5. As a result of measurement, 2.
2% and 9.3%.
【００３９】[0039]
【発明の効果】本発明の触媒は機械的強度に優れ、物理
的衝撃に対する抵抗性が大きく、粉化及び崩壊が著しく
少ない。このため触媒の移送や反応器への充填に際し触
媒の取り扱いが著しく容易になる。また工業触媒として
大型の反応器へ充填した場合、粉化率が小さいために反
応時の圧力損失が小さく、安定した触媒性能が得られ
る。Industrial Applicability The catalyst of the present invention has excellent mechanical strength, high resistance to physical impact, and extremely low powdering and disintegration. For this reason, handling of the catalyst during transfer of the catalyst and filling in the reactor becomes remarkably easy. When the catalyst is charged into a large reactor as an industrial catalyst, the pressure loss during the reaction is small due to a small powdering rate, and stable catalyst performance can be obtained.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ // Ｃ０７Ｂ 61/00 ３００ Ｃ０７Ｂ 61/00 ３００ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification symbol FI // C07B 61/00 300 C07B 61/00 300
Claims (6)
酸化してアクロレイン及びアクリル酸を合成するための
成型触媒又は担持触媒であって、その少なくとも一部の
表面が高い解重合性を有する有機高分子化合物でコーテ
ィングされていることを特徴とするアクロレイン及びア
クリル酸合成用触媒。1. A molded catalyst or a supported catalyst for synthesizing acrolein and acrylic acid by subjecting propylene to gas-phase catalytic oxidation with molecular oxygen, wherein at least a part of the surface of the organic catalyst has a high depolymerization property. A catalyst for synthesizing acrolein and acrylic acid, which is coated with a molecular compound.
がポリスチレン、ポリ−α−メチルスチレン、ポリメタ
クリル酸メチルからなる群から選ばれる少なくとも１種
であることを特徴とする請求項１記載のアクロレイン及
びアクリル酸合成用触媒。2. The method according to claim 1, wherein the organic polymer compound having a high depolymerization property is at least one selected from the group consisting of polystyrene, poly-α-methylstyrene, and polymethyl methacrylate. Catalyst for synthesis of acrolein and acrylic acid.
物の量が該成型触媒又は該担持触媒に対し０．１〜４０
重量％の範囲であることを特徴とする請求項１記載のア
クロレイン及びアクリル酸合成用触媒。3. The amount of the organic polymer compound coated is 0.1 to 40 with respect to the shaped catalyst or the supported catalyst.
The catalyst for synthesizing acrolein and acrylic acid according to claim 1, wherein the amount is in the range of% by weight.
酸化してアクロレイン及びアクリル酸を合成するための
成型触媒又は担持触媒の表面を高い解重合性を有する有
機高分子化合物でコーティングするに際し、該高分子化
合物を溶媒に溶解した溶液を霧状にして成型触媒又は担
持触媒に付着させるか、もしくは該溶液に成型触媒又は
担持触媒を浸漬することにより付着させ、その後溶媒を
気化蒸発させることを特徴とする少なくとも一部の表面
が高い解重合性を有する有機高分子化合物でコーティン
グされているアクロレイン及びアクリル酸合成用触媒の
製造方法。4. When coating the surface of a molded catalyst or a supported catalyst for synthesizing acrolein and acrylic acid by vapor-phase catalytic oxidation of propylene with molecular oxygen, and coating the surface with an organic polymer compound having high depolymerizability, A solution in which a polymer compound is dissolved in a solvent is atomized to adhere to a molded catalyst or a supported catalyst, or is adhered by immersing a molded catalyst or a supported catalyst in the solution, and thereafter, the solvent is vaporized and evaporated. A method for producing a catalyst for synthesizing acrolein and acrylic acid, wherein at least a part of the surface is coated with an organic polymer compound having high depolymerizability.
ブデン、ビスマス、鉄、ケイ素及び酸素を表し、Ａはニ
ッケル及び／又はコバルト、Ｘはマグネシウム、亜鉛、
マンガン、スズ及び鉛からなる群より選ばれた少なくと
も１種の元素、Ｙはリン、ホウ素、イオウ、テルル、セ
レン、ゲルマニウム、タングステン及びアンチモンから
なる群より選ばれた少なくとも１種の元素、Ｚはカリウ
ム、ナトリウム、セシウム、ルビジウム及びタリウムか
らなる群より選ばれた少なくとも１種の元素を示す。た
だし、ａ、ｂ、ｃ、ｄ、ｅ、ｆ、ｇ、ｈ及びｉは各元素
の原子比を表わし、ａ＝１２のとき、０．０１≦ｂ≦
３、０．０１≦ｃ≦５、１≦ｄ≦１２、０≦ｅ≦５、０
≦ｆ≦５、０．００１≦ｇ≦１、０≦ｈ≦２０でありｉ
は前記各成分の原子価を満足するのに必要な酸素原子数
である。）で示される組成を有することを特徴とする請
求項１、２又は３に記載の触媒。5. The molded catalyst or the supported catalyst has a general formula MoaBibFecAdXeYfZgSihOi (where Mo, Bi, Fe, Si and O represent molybdenum, bismuth, iron, silicon and oxygen, respectively, and A represents nickel and / or cobalt, X Is magnesium, zinc,
At least one element selected from the group consisting of manganese, tin and lead, Y is at least one element selected from the group consisting of phosphorus, boron, sulfur, tellurium, selenium, germanium, tungsten and antimony, Z is It represents at least one element selected from the group consisting of potassium, sodium, cesium, rubidium and thallium. However, a, b, c, d, e, f, g, h and i represent the atomic ratio of each element, and when a = 12, 0.01 ≦ b ≦
3, 0.01 ≦ c ≦ 5, 1 ≦ d ≦ 12, 0 ≦ e ≦ 5, 0
≦ f ≦ 5, 0.001 ≦ g ≦ 1, 0 ≦ h ≦ 20 and i
Is the number of oxygen atoms necessary to satisfy the valence of each component. 4. The catalyst according to claim 1, wherein the catalyst has a composition represented by the following formula:
含有する成型触媒又は担持触媒の少なくとも一部の表面
が該触媒に対し０．１〜４０重量％の解重合性の高い有
機高分子化合物でコーティングされた触媒を反応器に充
填し、反応開始前に該有機高分子化合物を解重合によっ
て除去した触媒を用いてプロピレンを分子状酸素により
気相接触酸化してアクロレイン及びアクリル酸を合成す
る方法。6. The surface of at least a part of a molded catalyst or a supported catalyst containing at least molybdenum, bismuth, or iron is coated with 0.1 to 40% by weight of the high polymerizable organic polymer compound based on the catalyst. A method in which propylene is vapor-phase catalytically oxidized with molecular oxygen using a catalyst from which the organic polymer compound is removed by depolymerization before the reaction is started, to synthesize acrolein and acrylic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3234047A JP2852712B2 (en) | 1991-08-21 | 1991-08-21 | Catalyst for synthesizing acrolein and acrylic acid and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3234047A JP2852712B2 (en) | 1991-08-21 | 1991-08-21 | Catalyst for synthesizing acrolein and acrylic acid and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0549938A JPH0549938A (en) | 1993-03-02 |
| JP2852712B2 true JP2852712B2 (en) | 1999-02-03 |
Family
ID=16964742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3234047A Expired - Fee Related JP2852712B2 (en) | 1991-08-21 | 1991-08-21 | Catalyst for synthesizing acrolein and acrylic acid and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2852712B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1925606A2 (en) | 2001-12-28 | 2008-05-28 | Mitsubishi Chemical Corporation | Method for vapor phase catalytic oxidation |
| US7549341B2 (en) | 2004-05-31 | 2009-06-23 | Mitsubishi Chemical Corporation | Method of maintaining a multitubular reactor |
| US10857525B2 (en) | 2013-05-24 | 2020-12-08 | Lg Chem, Ltd. | Catalyst for preparing acrolein and acrylic acid, and preparation method thereof |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08182933A (en) * | 1994-12-28 | 1996-07-16 | Japan Energy Corp | Solid catalyst excellent in mechanical strength and its production |
| JP4028886B2 (en) | 1997-12-03 | 2007-12-26 | 株式会社サクラクレパス | Ink backflow prevention mechanism of applicator |
| DE19855913A1 (en) * | 1998-12-03 | 2000-06-08 | Basf Ag | Multimetal oxide mass for the gas-phase catalytic oxidation of organic compounds |
| WO2012111468A1 (en) * | 2011-02-18 | 2012-08-23 | 国立大学法人新潟大学 | Palladium catalyst, and method for producing bisaryl compound using same |
| EP2781262B1 (en) | 2013-03-22 | 2020-05-27 | Clariant International Ltd | Removable protective coating for the receipt of a dust free catalyst |
| CN105899480B (en) * | 2013-11-11 | 2018-11-13 | 巴斯夫欧洲公司 | For gas phase oxidation of olefins to obtain the hollow cylindrical molded catalyst body of the mechanical stability of unsaturated aldehyde and/or unsaturated carboxylic acid |
-
1991
- 1991-08-21 JP JP3234047A patent/JP2852712B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1925606A2 (en) | 2001-12-28 | 2008-05-28 | Mitsubishi Chemical Corporation | Method for vapor phase catalytic oxidation |
| US7549341B2 (en) | 2004-05-31 | 2009-06-23 | Mitsubishi Chemical Corporation | Method of maintaining a multitubular reactor |
| US10857525B2 (en) | 2013-05-24 | 2020-12-08 | Lg Chem, Ltd. | Catalyst for preparing acrolein and acrylic acid, and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0549938A (en) | 1993-03-02 |
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