CN111185205B - Supported catalyst and application thereof in preparation of hydroxyalkyl acrylate - Google Patents

Supported catalyst and application thereof in preparation of hydroxyalkyl acrylate Download PDF

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CN111185205B
CN111185205B CN202010116498.3A CN202010116498A CN111185205B CN 111185205 B CN111185205 B CN 111185205B CN 202010116498 A CN202010116498 A CN 202010116498A CN 111185205 B CN111185205 B CN 111185205B
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陈方
兰陈圣慧
裴文
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CHIZHOU FANGDA TECHNOLOGY CO LTD
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/06Halogens; Compounds thereof
    • B01J27/138Halogens; Compounds thereof with alkaline earth metals, magnesium, beryllium, zinc, cadmium or mercury
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/06Halogens; Compounds thereof
    • B01J27/128Halogens; Compounds thereof with iron group metals or platinum group metals
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00Preparation of carboxylic acid esters
    • C07C67/24Preparation of carboxylic acid esters by reacting carboxylic acids or derivatives thereof with a carbon-to-oxygen ether bond, e.g. acetal, tetrahydrofuran
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00Preparation of carboxylic acid esters
    • C07C67/24Preparation of carboxylic acid esters by reacting carboxylic acids or derivatives thereof with a carbon-to-oxygen ether bond, e.g. acetal, tetrahydrofuran
    • C07C67/26Preparation of carboxylic acid esters by reacting carboxylic acids or derivatives thereof with a carbon-to-oxygen ether bond, e.g. acetal, tetrahydrofuran with an oxirane ring

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Abstract

The invention discloses a supported catalyst and application thereof in preparing hydroxyalkyl acrylate, wherein the catalyst is obtained by loading any one simple substance, oxide, sulfate and halide of metal magnesium, calcium, iron, copper, zinc or aluminum on a carrier, and the weight ratio of the simple substance, oxide, sulfate and halide of metal magnesium, calcium, iron, copper, zinc and aluminum is 1:1 to 3:1 to 10: 1-5, the weight dosage of the carrier is 1-5 times of the total weight dosage of simple substances, oxides, sulfates and halides of magnesium, calcium, iron, copper, zinc and aluminum. The catalyst used in the invention has the advantages of cheap and easily available components, low manufacturing cost, simple operation process, mild conditions, convenient post-treatment, high activity of the catalyst, long service life and repeated use after regeneration. The catalyst is used for preparing the hydroxyalkyl acrylate, has simple process and safe production process, does not need a polymerization inhibitor, and can be continuously carried out, the conversion rate of raw materials is more than 96 percent, and the purity of products is more than 99 percent.

Description

Supported catalyst and application thereof in preparation of hydroxyalkyl acrylate
Technical Field
The invention relates to a catalyst, in particular to a supported catalyst and application of the supported catalyst in preparation of hydroxyalkyl acrylate.
Background
The hydroxyalkyl acrylate is an important chemical raw material, is a colorless and transparent liquid and has two functional groups of carbon-carbon double bond and hydroxyl. The product has active property and wide application range, and is mainly used for fiber processing, paint, light-cured resin, adhesive, paper processing, rubber industry and the like. The material has a certain representativeness in terms of the characteristics of the preparation process and the material. The hydroxyalkyl acrylate as the special acrylate has seven synthetic process routes: 1) The ring-opening reaction method is to introduce alkylene oxide into acrylic acid and react under the action of catalyst and inhibitor to produce hydroxyalkyl acrylate and small amount of side product directly. The ring-opening reaction method is reasonable from the economical point of view, and is a general method for preparing hydroxyalkyl acrylate at present. The method has the characteristics of quick reaction, low reaction temperature, less side reaction, particularly less polymerization reaction, high reaction yield up to about 95 percent, simple post-treatment, easy distillation to obtain high-purity products and suitability for large-scale production. The method has the disadvantages of strict requirements on production equipment and operation conditions and high technical level requirements. 2) The one-step method is that acrylic acid, chlorohydrin and sodium hydroxide solid are heated to react, and the reaction end point is determined by analyzing the content of sodium chloride by a silver nitrate method. When the reaction reaches a certain conversion rate, the reaction is stopped. After cooling, sodium chloride produced by the reaction and unreacted sodium acrylate were filtered off under reduced pressure using a Buchner funnel. Adding a certain amount of diethylene glycol and hydroquinone into the obtained reaction mother liquor, carrying out reduced pressure distillation to separate out excessive chlorohydrin, and collecting hydroxyalkyl acrylate fractions. The one-step process is fast but the conversion increases very slowly by the end and the polymer increases with time. The chlorohydrin is in excess to ensure completion of the reaction, but the reaction solution is too viscous, which makes the reaction and separation difficult. The temperature has large influence on the reaction, the temperature is increased, the reaction rate is accelerated, but under the condition of pressurization and temperature rise, the polymerization is easy to occur, and the industrialization is difficult. 3) The direct esterification method is a reversible reaction of bimolecular, and is carried out under the catalysis of acid, and commonly used catalysts are sulfuric acid, hydrochloric acid, sulfonic acid, tin salt, organic titanate, cation exchange resin and the like. In view of corrosion of equipment in industry, benzenesulfonic acid, p-toluenesulfonic acid or cation exchange resins are generally used as catalysts. The direct esterification method is slow in reaction at low temperature, and the reaction temperature is often increased to increase the reaction rate; however, the esterification yield is low in the esterification process, and the selectivity problem of the monoester and the diester exists. In the prior art, concentrated hydrochloric acid is used as a catalyst, benzene is used as a water-carrying agent to synthesize hydroxyethyl acrylate, and a reaction mixed solution is subjected to neutralization, filtration and reduced pressure distillation to obtain a product, wherein the yield is 64%. The 001X 7 strong acid type cation exchange resin is used as a catalyst for synthesizing hydroxyethyl acrylate in high-class Changyan in China, the conversion rate reaches over 90 percent, the yield reaches 78.2 percent, and the purity reaches 98.1 percent. 4) The ester exchange method is that dihydric alcohol and methyl acrylate are subjected to ester exchange reaction, the ester exchange is generally carried out by methyl (ethyl) acrylate and the dihydric alcohol, and commonly used catalysts are strong bases such as sodium alkoxide, magnesium alkoxide, sodium hydroxide, calcium hydroxide, tetramethylammonium hydroxide and hexadecyltrimethylammonium hydroxide and strong acids such as concentrated sulfuric acid and sulfonic acid. In 1984, a czech researcher adopts tetramethylammonium hydroxide as a catalyst to obtain high-purity hydroxyethyl methacrylate only containing 0.1-0.3 percent of ethylene glycol dimethacrylate. Cheap methyl methacrylate reacts with ethylene glycol at home, hydroquinone is used as a polymerization inhibitor under the catalysis of hexadecyl trimethyl ammonium hydroxide to synthesize the hydroxyethyl methacrylate, and the yield is 92.3 percent. 5) The acyl chloride esterification method is characterized in that dihydric alcohol reacts with acryloyl chloride, and the acyl chloride and alcohol are subjected to esterification reaction in the presence of an acid remover (such as sodium ethoxide, sodium carbonate, pyridine, triethylamine, picoline and other alkaline substances) to generate ester. This is an irreversible reaction, the esterification of the acid chloride proceeds very easily and the acylation ability is stronger than that of the corresponding acid anhydride. The esterification of acyl chloride in the acyl chloride esterification method has the following advantages: (1) the byproduct generated in the acyl chloride reaction is hydrogen chloride gas which is easy to remove; (2) the acyl chloride has strong reactivity, high reaction rate and lower reaction temperature; (3) HCl generated in the esterification reaction can be removed with an acid remover to generate insoluble ammonium salt, so that the reaction is complete and the yield is high. However, the cost of acid chlorides is much higher than that of the corresponding carboxylic acids, and thus, the industrial application thereof is very limited. 6) Under the catalysis of alkaline resin and the protection of nitrogen, dihydric alcohol carbonate reacts with acrylic acid to prepare hydroxyalkyl acrylate. The advantage of the reaction of the glycol carbonate with acrylic acid is that the carbon dioxide formed in the reaction is easily removed. The disadvantages are long reaction time, high reaction temperature, easy generation of side reaction and low yield. 7) The chlorohydrin process is the reaction of a carboxylic acid salt with an active halide (or benzylic halide) to form an ester. Acrylic acid is first converted to sodium acrylate which is then reacted with chlorohydrin to form the hydroxyalkyl acrylate. The chlorohydrin method has the advantages of rapid reaction, mild conditions and safe production process. However, since the inorganic salt is precipitated during the reaction, the operation and the post-treatment are troublesome.
In the research of hydroxyalkyl acrylate catalysts, the catalysts used at home and abroad at present can be roughly classified into chromium-based, iron-based, copper-based, cobalt-based organic amines and the like, the chromium-based catalysts have high activity and high selectivity, but the catalysts are difficult to prepare, need to be matched with special auxiliaries and polymerization inhibitors, chromium is heavy metal, and chromium in refined residual liquid is difficult to recover and treat, so that the pollution to the environment is large. Iron series, copper series, cobalt series and organic amine catalysts are environment-friendly catalysts and belong to clean production technology. However, cobalt-based catalysts are limited by the source of raw materials and are difficult to scale up; the iron-based and copper-based catalysts have short service life and high production cost, and are required to be further researched.
The carbon-silicon material is considered to be a good carrier, has good hydrothermal stability, large specific surface area and rich pore structure, and is easy to load metal by a simple method. Modification of carbon materials can significantly change the valence electron cloud of the carbon materials, increase defect sites, increase the adsorption capacity of reactants, and the like, which may be beneficial to the progress of catalytic reactions or change product distribution, and the like. Therefore, the method for preparing the metal carbon-based heterogeneous catalyst with high activity, high stability and long service life by using the acrylic acid and the alkylene oxide as raw materials to carry out condensation reaction and using the carbon-silicon material as a simple carrier to be compounded with the metal simple substance and the compound thereof is a good development direction in the field of catalysis.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a novel supported catalyst, which can prepare hydroxyalkyl acrylate products with high conversion rate and high purity by using acrylic acids and alkylene oxide as raw materials at low cost.
In order to solve the technical problem, the invention discloses a supported catalyst which is obtained by loading any one simple substance, oxide, sulfate and halide of metal magnesium, calcium, iron, copper, zinc or aluminum on a carrier,
the weight ratio of the simple substances, oxides, sulfates and halides of the metal magnesium, calcium, iron, copper, zinc and aluminum is 1:1 to 3:1 to 10:1 to 5 of the total weight of the mixture,
the weight consumption of the carrier is 1-5 times of the total weight consumption of simple substances, oxides, sulfates and halides of magnesium, calcium, iron, copper, zinc and aluminum.
Furthermore, the oxides of the metals of magnesium, calcium, iron, copper, zinc and aluminum are MgO, caO, feO and Cu 2 O、CuO、ZnO、Al 2 O 3 Any one of them.
Further, the sulfate of the metal magnesium, calcium, iron, copper, zinc and aluminum is MgSO 4 、CaSO 4 、FeSO 4 、Cu 2 SO 4 、CuSO 4 、ZnSO 4 、Al 2 (SO 4 ) 3 Any one of them.
Further, the halide of the metal magnesium, calcium, iron, copper, zinc and aluminum is MgCl 2 、MgBr 2 、CaCl 2 、CaBr 2 、FeCl 2 、CuCl、CuCl 2 、CuBr、CuBr 2 、ZnCl 2 、AlCl 3 Any one of them.
Further, the carrier is one or a mixture of more than two of active carbon, carbon fiber or diatomite.
Further, the catalyst is prepared by the following method:
putting any simple substance of magnesium, calcium, iron, copper, zinc or aluminum, oxide, sulfate, halide and carrier into a reactor according to a certain proportion, fully mixing, drying for 3 hours at 110 ℃, grinding into powder by a grinder, replacing for 3 times by high-purity nitrogen, and vacuumizing for 3 hours under a vacuum pump of-60 to-80 kPa to obtain the catalyst.
The invention also discloses an application of the supported catalyst in preparation of hydroxyalkyl acrylate, wherein the hydroxyalkyl acrylate is prepared by taking acrylic acid and alkylene oxide as reaction raw materials and performing ring-opening reaction.
Further, separately mixing acrylic acid and toluene in a weight ratio of 1:1, adding the mixture into a preheater, preheating and gasifying the mixture, and then introducing the mixture into a tubular reactor;
in a further mixer, alkylene oxide and nitrogen are mixed in a weight ratio of 1:1 mixing and then introducing into a tubular reactor;
the tubular reactor is filled with the supported catalyst,
at the temperature of 120-200 ℃ and 1-10 kg/cm 2 Reacting under absolute pressure, after the reaction is finished, distilling the materials into a condensation separation tower for separation to obtain hydroxyalkyl acrylate;
the molar ratio of the acrylic acid to the alkylene oxide is 1:1 to 1.6.
After the reaction product is metered, the reaction product is analyzed and detected by gas chromatography. The gas chromatography detection conditions comprise that a chromatographic column is an elastic quartz capillary column with the diameter of 30m multiplied by 0.32mm multiplied by 0.5 mu m, SE 254 (high inertia crosslinking), the column temperature is 160 ℃, the detector temperature is 250 ℃, the vaporization temperature is 270 ℃, and the sample injection amount is 0.4L.
Further, the acrylic is methacrylic acid or acrylic acid.
Further, the alkylene oxide is ethylene oxide or propylene oxide.
When different acrylic acids and alkylene oxides are used, the hydroxyalkyl acrylate obtained by the invention can be four types of hydroxyethyl methacrylate, hydroxypropyl methacrylate, hydroxyethyl acrylate and hydroxypropyl acrylate.
The invention has the following beneficial effects:
1) The catalyst used in the invention has the advantages of cheap and easily available components, low manufacturing cost, simple operation process, mild conditions, convenient post-treatment, high activity of the catalyst, long service life and repeated use after regeneration.
2) The catalyst is used for preparing the hydroxyalkyl acrylate, the process is simple, the production process is safe, a polymerization inhibitor is not needed in the reaction due to the adoption of the combination of specific metal simple substances, oxides, sulfates and halides, the production process can be continuously carried out, the conversion rate of raw materials reaches more than 96%, and the purity of products reaches more than 99%.
Detailed Description
The present invention will be described more specifically with reference to examples. The present invention is not limited to the following examples, and any modification or variation of the present invention is within the scope of the present invention.
Example 1 preparation of catalyst 1
Mixing Mg 1kg, mgO 1kg, mgSO 4 5kg、MgCl 2 1kg of activated carbon (8 kg) was thoroughly mixed in a reactor, dried at 110 ℃ for 3 hours, ground into powder with a grinder, replaced with high-purity nitrogen gas for 3 times, evacuated with a vacuum pump of-60 kPa for 3 hours, and then directly charged into a tubular reactor.
Example 2 preparation of catalyst 2
Adding Zn 1kg, mgO 3kg and CuSO 4 5kg、MgCl 2 1kg and 15kg of active carbon are fully mixed in a reactor, dried for 3 hours at 110 ℃, ground into powder by a grinder, replaced by high-purity nitrogen for 3 times, vacuumized for 3 hours under a vacuum pump of 60 kPa, and directly filled into a tubular reactor.
Example 3 preparation of catalyst 3
1kg of Zn, 1kg of FeO and CuSO 4 10kg、MgCl 2 1kg and 26kg of carbon fiber are fully mixed in a reactor, dried for 3 hours at 110 ℃, ground into powder by a grinder, replaced by high-purity nitrogen for 3 times, vacuumized for 3 hours under a vacuum pump of 60 kPa, and directly filled into a tubular reactor.
Example 4 preparation of catalyst 4
Mixing Al 1kg, cuO 3kg and FeSO 4 1kg、AlCl 3 5kg, 10kg of activated carbon, 10kg of carbon fiber and 10kg of diatomite are fully mixed in a reactor, dried for 3 hours at 110 ℃, ground into powder by a grinder, replaced by high-purity nitrogen for 3 times, vacuumized for 3 hours under a vacuum pump of-60 kPa, and then directly filled into a tubular reactor.
Example 5 preparation of catalyst 5
1kg of Zn, 1kg of CuO and CuSO 4 10kg、AlCl 3 1kg, 15kg of activated carbon and 15kg of diatomite are fully mixed in a reactor, then dried for 3 hours at 110 ℃, ground into powder by a grinder, replaced by high-purity nitrogen for 3 times, vacuumized for 3 hours under a vacuum pump of-60 kPa, and then directly filled into a tubular reactor.
EXAMPLE 6 preparation of hydroxyethyl acrylate
Adding 72 kg/h of acrylic acid and 72 kg/h of toluene into a preheater for preheating and gasifying, and then introducingA tubular reactor already charged with catalyst 1; at the same time, 45 kg/h of ethylene oxide and 45 kg/h of nitrogen were mixed in a further mixer and introduced into the tubular reactor which had been charged with catalyst 1. At 120 ℃ under a reaction pressure of 1kg/cm 2 The reaction is carried out under absolute pressure, the materials are distilled into a condensation separation tower for separation, and 112 kg/h of hydroxyethyl acrylate is obtained, the conversion rate is 96.6 percent, and the purity is 99.2 percent.
EXAMPLE 7 preparation of hydroxypropyl acrylate
Adding 72 kg/h of acrylic acid and 72 kg/h of toluene into a preheater, preheating and gasifying the acrylic acid and the toluene, and introducing the acrylic acid and the toluene into a tubular reactor filled with a catalyst 1; simultaneously, 92 kg/h of propylene oxide and 92 kg/h of nitrogen were mixed in a further mixer and then fed into the tubular reactor containing catalyst 1. At 200 ℃, the reaction pressure is 1kg/cm 2 The reaction is carried out under absolute pressure, and the materials are distilled into a condensation separation tower for separation to obtain 126 kg/h of hydroxypropyl acrylate, the conversion rate is 96.2 percent, and the purity is 99.1 percent.
EXAMPLE 8 preparation of hydroxyethyl methacrylate
Adding 86 kg/h of acrylic acid and 86 kg/h of toluene into a preheater, preheating and gasifying the acrylic acid and the toluene, and introducing the acrylic acid and the toluene into a tubular reactor filled with a catalyst 2; at the same time, 50 kg/h of ethylene oxide and 50 kg/h of nitrogen were mixed in a further mixer and then introduced into the tubular reactor which had been charged with catalyst 2. At 150 ℃, the reaction pressure is 1kg/cm 2 The reaction is carried out under absolute pressure, the materials are distilled into a condensation separation tower for separation, 125 kg/h of hydroxyethyl acrylate is obtained, the conversion rate is 98.0 percent, and the purity is 99.8 percent.
EXAMPLE 9 preparation of hydroxypropyl methacrylate
Adding 86 kg/h of methacrylic acid and 86 kg/h of methylbenzene into a preheater, preheating, gasifying and introducing into a tubular reactor filled with a catalyst 3; while 75 kg/h of propylene oxide and 75 kg/h of nitrogen were mixed in a further mixer and then introduced into the tubular reactor which had been charged with catalyst 3. At 120 ℃ under a reaction pressure of 1kg/cm 2 The reaction is carried out under absolute pressure, the materials are distilled into a condensation separation tower for separation, and 141 kg/h hydroxypropyl methacrylate is obtained, the conversion rate is 98.1 percent, and the purity is 99.2 percent.
EXAMPLE 10 preparation of hydroxyethyl methacrylate
Adding 86 kg/h of methacrylic acid and 86 kg/h of methylbenzene into a preheater, preheating, gasifying and introducing into a tubular reactor filled with a catalyst 4; at the same time, 53 kg/h of ethylene oxide and 53 kg/h of nitrogen were mixed in a further mixer and then introduced into the tubular reactor which had been filled with catalyst 4. At 150 ℃, the reaction pressure is 10kg/cm 2 The reaction is carried out under absolute pressure, the materials are distilled into a condensation separation tower for separation, 125 kg/h of hydroxyethyl methacrylate is obtained, the conversion rate is 97 percent, and the purity is 99 percent.
EXAMPLE 11 preparation of hydroxypropyl methacrylate
Adding 86 kg/h of methacrylic acid and 86 kg/h of methylbenzene into a preheater, preheating, gasifying and introducing into a tubular reactor filled with a catalyst 5; at the same time, 53 kg/h propylene oxide and 53 kg/h nitrogen were mixed in a further mixer and then introduced into the reactor which had been filled with catalyst 5. At 160 ℃ and a reaction pressure of 5kg/cm 2 The reaction is carried out under absolute pressure, the materials are distilled into a condensation separation tower for separation, and 137 kg/h of hydroxypropyl methacrylate is obtained, the conversion rate is 98.2 percent, and the purity is 99.9 percent.

Claims (7)

1. The application of a supported catalyst in preparing hydroxyalkyl acrylate is characterized in that the hydroxyalkyl acrylate is prepared by taking acrylic acid and alkylene oxide as reaction raw materials through a ring opening reaction, and specifically comprises the following components:
respectively mixing acrylic acid and toluene in a weight ratio of 1:1, adding the mixture into a preheater, preheating and gasifying the mixture, and then introducing the mixture into a tubular reactor;
in a further mixer, alkylene oxide and nitrogen are mixed in a weight ratio of 1:1 mixing and then introducing into a tubular reactor;
the tubular reactor is loaded with the supported catalyst,
at the temperature of 120-200 ℃ and the concentration of 1-10 kg/cm 2 Reacting under absolute pressure, distilling the materials into a condensation separation tower for separation to obtain hydroxyalkyl acrylate;
the acrylic acid is methacrylic acid or acrylic acid,
the molar ratio of the acrylic acid to the alkylene oxide is 1:1 to 1.6 of the total weight of the mixture,
the supported catalyst is obtained by loading any one simple substance, oxide, sulfate and halide of metal magnesium, calcium, iron, copper, zinc or aluminum on a carrier,
the weight ratio of the simple substances, oxides, sulfates and halides of the metal magnesium, calcium, iron, copper, zinc and aluminum is 1:1 to 3:1 to 10:1 to 5 percent of the total weight of the mixture,
the weight consumption of the carrier is 1-5 times of the total weight consumption of simple substances, oxides, sulfates and halides of magnesium, calcium, iron, copper, zinc and aluminum.
2. Use according to claim 1, characterized in that: the oxides of the metal magnesium, calcium, iron, copper, zinc and aluminum are MgO, caO, feO and Cu 2 O、CuO、ZnO、Al 2 O 3 Any one of them.
3. The method for preparing hydroxyalkyl acrylate with the supported catalyst as claimed in claim 1, wherein: the sulfate of the metal magnesium, calcium, iron, copper, zinc and aluminum is MgSO 4 、CaSO 4 、FeSO 4 、Cu 2 SO 4 、CuSO 4 、ZnSO 4 、Al 2 (SO 4 ) 3 Any one of them.
4. Use according to claim 1, characterized in that: the halide of the metal magnesium, calcium, iron, copper, zinc and aluminum is MgCl 2 、MgBr 2 、CaCl 2 、CaBr 2 、FeCl 2 、CuCl、CuCl 2 、CuBr、CuBr 2 、ZnCl 2 、AlCl 3 Any one of them.
5. Use according to claim 1, characterized in that: the carrier is one or a mixture of more than two of active carbon, carbon fiber or diatomite.
6. Use according to claim 1, characterized in that: the catalyst is prepared by the following method:
putting any simple substance of magnesium, calcium, iron, copper, zinc or aluminum, oxide, sulfate, halide and carrier into a reactor according to a certain proportion, fully mixing, drying for 3 hours at 110 ℃, grinding into powder by a grinder, replacing for 3 times by high-purity nitrogen, and vacuumizing for 3 hours under a vacuum pump of-60 to-80 kPa to obtain the catalyst.
7. Use according to claim 1, characterized in that: the alkylene oxide is ethylene oxide or propylene oxide.
CN202010116498.3A 2020-02-25 2020-02-25 Supported catalyst and application thereof in preparation of hydroxyalkyl acrylate Active CN111185205B (en)

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CN114752048A (en) * 2022-04-11 2022-07-15 深圳光华伟业股份有限公司 Catalyst and application of preparation method thereof in preparation of biomedical polylactic acid
CN114685772A (en) * 2022-04-20 2022-07-01 深圳光华伟业股份有限公司 Novel biomedical polylactic acid synthesis method

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Publication number Priority date Publication date Assignee Title
GB1137071A (en) * 1966-04-28 1968-12-18 Japan Gas Chemical Co Process for preparing hydroxyalkyl acrylate or hydroxyalkyl methacrylate
CN1192943A (en) * 1997-03-12 1998-09-16 厦门大学 Supported solid-acid catalyst for producing butyl acetic ether
JP2000297062A (en) * 1999-04-14 2000-10-24 Dainippon Ink & Chem Inc Production of hydroxyalkyl (meth)acrylate
CN1355161A (en) * 2000-11-24 2002-06-26 中国石化集团齐鲁石油化工公司 Process for preparing polyol di(methy) acrylate
CN104640835A (en) * 2012-09-24 2015-05-20 株式会社日本触媒 Hydroxyalkyl acrylate and method for producing same
CN110026212A (en) * 2019-05-23 2019-07-19 临海市利民化工有限公司 A kind of catalyst for cracking and the method using the catalyst preparation sitafloxacin intermediate

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1137071A (en) * 1966-04-28 1968-12-18 Japan Gas Chemical Co Process for preparing hydroxyalkyl acrylate or hydroxyalkyl methacrylate
CN1192943A (en) * 1997-03-12 1998-09-16 厦门大学 Supported solid-acid catalyst for producing butyl acetic ether
JP2000297062A (en) * 1999-04-14 2000-10-24 Dainippon Ink & Chem Inc Production of hydroxyalkyl (meth)acrylate
CN1355161A (en) * 2000-11-24 2002-06-26 中国石化集团齐鲁石油化工公司 Process for preparing polyol di(methy) acrylate
CN104640835A (en) * 2012-09-24 2015-05-20 株式会社日本触媒 Hydroxyalkyl acrylate and method for producing same
CN110026212A (en) * 2019-05-23 2019-07-19 临海市利民化工有限公司 A kind of catalyst for cracking and the method using the catalyst preparation sitafloxacin intermediate

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Denomination of invention: A supported catalyst and its application in the preparation of hydroxyalkyl acrylate

Granted publication date: 20230117

Pledgee: Agricultural Bank of China Limited Dongzhi County Branch

Pledgor: Chizhou Fangda Technology Co.,Ltd.|Chen Fang

Registration number: Y2024980002081