JPWO2014038504A1 - 金ナノ粒子を担持してなる触媒担持体及びその製造方法 - Google Patents
金ナノ粒子を担持してなる触媒担持体及びその製造方法 Download PDFInfo
- Publication number
- JPWO2014038504A1 JPWO2014038504A1 JP2014534343A JP2014534343A JPWO2014038504A1 JP WO2014038504 A1 JPWO2014038504 A1 JP WO2014038504A1 JP 2014534343 A JP2014534343 A JP 2014534343A JP 2014534343 A JP2014534343 A JP 2014534343A JP WO2014038504 A1 JPWO2014038504 A1 JP WO2014038504A1
- Authority
- JP
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- Prior art keywords
- gold
- carrier
- catalyst
- water
- carboxylate
- 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.)
- Granted
Links
- 239000010931 gold Substances 0.000 title claims abstract description 321
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 257
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 210
- 239000003054 catalyst Substances 0.000 title claims abstract description 152
- 239000002105 nanoparticle Substances 0.000 title claims abstract description 83
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 74
- 230000001603 reducing effect Effects 0.000 claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 135
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 88
- -1 gold carboxylate Chemical class 0.000 claims description 84
- 238000000034 method Methods 0.000 claims description 82
- OTCKNHQTLOBDDD-UHFFFAOYSA-K gold(3+);triacetate Chemical group [Au+3].CC([O-])=O.CC([O-])=O.CC([O-])=O OTCKNHQTLOBDDD-UHFFFAOYSA-K 0.000 claims description 35
- 238000001246 colloidal dispersion Methods 0.000 claims description 28
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 27
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 26
- 239000000084 colloidal system Substances 0.000 claims description 23
- 239000003638 chemical reducing agent Substances 0.000 claims description 20
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 20
- 239000003575 carbonaceous material Substances 0.000 claims description 17
- 229910044991 metal oxide Inorganic materials 0.000 claims description 15
- 150000004706 metal oxides Chemical class 0.000 claims description 15
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- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims description 13
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- 238000007254 oxidation reaction Methods 0.000 description 61
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- 229910002012 Aerosil® Inorganic materials 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
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- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 230000010718 Oxidation Activity Effects 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
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- BTANRVKWQNVYAZ-UHFFFAOYSA-N butan-2-ol Chemical compound CCC(C)O BTANRVKWQNVYAZ-UHFFFAOYSA-N 0.000 description 3
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- YWYZEGXAUVWDED-UHFFFAOYSA-N triammonium citrate Chemical compound [NH4+].[NH4+].[NH4+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O YWYZEGXAUVWDED-UHFFFAOYSA-N 0.000 description 1
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/341—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
- B01J37/343—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of ultrasonic wave energy
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
- C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
- C07C51/23—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of oxygen-containing groups to carboxyl groups
- C07C51/235—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of oxygen-containing groups to carboxyl groups of —CHO groups or primary alcohol groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D—SEPARATION
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Abstract
Description
項2.前記金ナノ粒子の平均粒子径が10nm以下である、項1に記載の触媒担持体。
項3.前記還元力を有する担体が多孔質材料である、項1又は2に記載の触媒担持体。
項4.前記還元力を有する担体が炭素材料又は金属酸化物である、項1〜3のいずれかに記載の触媒担持体。
項5.前記還元力を有する担体が、粉状活性炭、繊維状活性炭、酸化チタン、酸化コバルト、及び酸化マンガンからなる群より選択される少なくとも1種である、項1〜4のいずれかに記載の触媒担持体。
項6.平均粒子径が100nm以下の金ナノ粒子が担持されてなる触媒担持体を製造する方法であって、水の存在下で金カルボキシラートと還元力を有する担体を接触させる工程を含む、前記方法。
項7.下記工程を含む、項6に記載の方法:
(i)金カルボキシラートを水に分散させて金カルボキシラートのコロイド分散液を調製する工程;
(ii)前記工程(i)で得られた金カルボキシラートのコロイド分散液に還元力を有する担体を接触させて金ナノ粒子を担持させる工程。
項8.前記工程(ii)において、金カルボキシラートのコロイド分散液に更に還元剤を添加する、項7に記載の方法。
項9.前記工程(ii)において、金カルボキシラートのコロイド分散液に更に保護コロイドを添加する、項7又は8に記載の方法。
項10.前記金カルボキシラートが酢酸金である、項6〜9のいずれかに記載の方法。
本発明の触媒担持体は、還元力を有する担体に、平均粒子径が100nm以下の金ナノ粒子が担持されてなることを特徴とする。
本発明は、水の存在下で金カルボキシラートと還元力を有する担体を接触させる工程を含む、平均粒子径が100nm以下の金ナノ粒子が担持されてなる触媒担持体を製造する方法を提供する。
(i)金カルボキシラートを水に分散させて金カルボキシラートのコロイド分散液を調製する工程;
(ii)前記工程(i)で得られた金カルボキシラートのコロイド分散液に還元力を有する担体を接触させて金ナノ粒子を担持させる工程。
本工程(i)において金ナノ粒子の供給源として使用される金カルボキシラートとしては、カルボキシル化された金、好ましくはカルボキシル化された3価の金を指す。金カルボキシラートは、水に分散されると一部が下記一般式(a)により示される陰イオンと金イオン(Au3+)とに分かれて溶解する。即ち、本発明の製造方法において調製される金カルボキシラートのコロイド分散液は、溶媒(水)中に金ナノコロイド粒子と、溶解した金カルボキシラート、溶解した金カルボキシラートから解離した金イオン及び下記一般式(a)で表わされる陰イオンを含んでいる。
R−COO- (a)
(式中、Rは、水素原子、炭素数1〜4の直鎖状又は分岐鎖状アルキル基を示す)
本明細書において、この一般式(a)で表わされる陰イオンを「カルボキシラート(carboxylate)」と呼ぶ。
本工程(ii)においては、前記工程(i)で得られた金カルボキシラートのコロイド分散液に還元力を有する担体を接触させて、当該担体に金ナノ粒子を担持させる。
実施例1.(担持量1重量%の金/活性炭の調製)
[触媒の調製]
水50mLに酢酸金[Au(CH3COO)3,Alfa Aesar製]の茶色粉末9.6mgを加え、超音波洗浄機(US−2R、アズワン製)を用いて分散させて薄茶色の分散液を得た。超音波洗浄機の運転時間としては、上記濃度条件の場合5秒で充分であった。これに容器の横からLEDライトの光を当てるとチンダル現象が見られることから真の水溶液ではなく茶色のコロイド分散液となっていることが確認された。
D=Kλ/(Bcosθ)
D:結晶子の大きさ(体積平均粒子径に相当)
K:シェラー定数(上記式ではK=0.849を用いた)
λ:CuKαX線の波長0.154nm
B:回折線幅(上記式ではAu(111)の実測半値幅である0.46°から装置幅の0.28°を差し引いた0.18°を用いた)
θ:Au(111)のブラッグ角19.1°
上記式から、D=44.3nmと計算され、これを活性炭上に担持された金ナノ粒子の体積平均粒子径とみなすことができる。
上記した方法で得られた触媒担持体を用いて、水中でのグルコース酸化反応を行った。グルコース酸化反応では、触媒成分として担持されている金のサイズが小さくなければ触媒活性が発現されず、反応が進行しない。従って、グルコース酸化反応によりグルコン酸が生成されれば、サイズの小さい金粒子が担持されていると予測することができる。
R1:触媒重量当たりのグルコース反応速度(mol h-1 g-1)
Rg:グルコース生成速度(molh-1)
Wcat.:触媒重量(g)
R2=Rg/MAu
R2:触媒中の金属金(Au)1モル数当たりのグルコース反応速度
(mol s-1mol-1)
Rg:グルコース生成速度(mol s-1)
MAu:触媒中のAuモル数(mol)
酢酸金分散液に、活性炭粉末を添加した後の撹拌時間を10分とした他は、実施例1と同じ条件で調製を行い金担持量1重量%に相当する金/活性炭の触媒担持体を得た。得られた触媒担持体を、グルコース酸化反応の触媒として使用した。グルコース酸化反応速度を下表1に示す。結果より、酢酸金分散液と活性炭粉末の接触時間は一晩の必要なく、10分間でも充分な効果の得られることが示された。
実施例1に記載される活性炭粉末500mgと酢酸金の粉末9.6mgをメノウ乳鉢にとり水を10滴加え、メノウ乳棒ですり潰すことによりスラリー状態で混合を行った。5分間すり潰しを続けると徐々に乾いてきたため、更に水を10滴加えて5分間すり潰した。この後直ちに水を加えて吸引濾過・水洗を行い、60℃で乾燥して金担持量1重量%に相当する金/活性炭の触媒担持体を得た。得られた触媒担持体を、グルコース酸化反応の触媒として使用した。グルコース酸化反応速度を下表1に示す。結果より、粉末状の担体の場合には、スラリー状で混練することによっても活性の高い触媒が調製できることが示された。
水55mLに酢酸金[Au(CH3COO)3,Alfa Aesar製]の茶色粉末10.9mgを加え、実施例1と同様に分散させて茶色のコロイド分散液を得た。分散液の5mLを分取して、水を加え全量が50mLとなるよう希釈した。次に、実施例1で担体として使用されたものと同じ活性炭粉末500mgを添加して一晩撹拌し、吸引濾過・水洗し、室温で乾燥して担持量0.1重量%の金/活性炭の触媒担持体を得た。得られた触媒担持体を、グルコース酸化反応の触媒として使用した。グルコース酸化反応速度を下表1に示す。
実施例1と同様にして酢酸金[Au(CH3COO)3,Alfa Aesar製]の茶色粉末9.6mgを水50mLに分散させた。次に、予め熱水で洗浄した繊維状活性炭(クラレケミカル製FR15)500mgを添加した。振とう機を用いて一晩撹拌し、吸引濾過・水洗し、室温で乾燥して担持量1重量%の金/活性炭の触媒担持体を得た。得られた触媒担持体を、グルコース酸化反応の触媒として使用した。グルコース酸化反応速度を下表1に示す。
実施例1と同様にして酢酸金[Au(CH3COO)3,Alfa Aesar製]の茶色粉末10.5mgを水10mLに分散させた。マグネチックスターラーで撹拌しながら、エタノール10mLを加え、約60℃で10分間加熱したところ、酢酸金中の金イオンがエタノールにより全て還元され赤色の金コロイドが生成した。加熱を止め室温に戻した後、水30mLを加え、全量を50mLとした。
酢酸金の代わりに塩化金酸四水和物(キシダ化学)の結晶を電子天秤で秤量し、所定量の水に溶解して調製した塩化金酸(HAuCl4)の0.1mol/L水溶液0.26mLを用いる他は、実施例1と同様の条件で溶液を調製した。調製時の塩化金酸水溶液の液色は黄色(通常の塩化金酸水溶液の液色)でチンダル現象も観察されず塩化金酸は完全に溶けて真の溶液となっていた。この塩化金酸水溶液を60℃に加熱してNaOHを滴下しpH7.8の[Au(OH)3Cl]-の透明溶液を得た。これに、実施例1で担体として使用されたものと同じ活性炭粉末(500mg)を添加し、実施例1と同じ条件で一晩撹拌して濾過、水洗の後、乾燥させて金担持量1重量%に相当する金/活性炭の触媒担持体を得た。得られた触媒担持体を、グルコース酸化反応の触媒として使用した。グルコース酸化反応速度を下表1に示す。
比較例2で使用されたもの同じ0.1mol/L塩化金酸水溶液を脱イオン蒸留水で1/100に希釈して1mmol/L塩化金酸水溶液を得た。この溶液を脱イオン蒸留水50mLに加え、次に、実施例1で担体として使用されたものと同じ活性炭粉末500mgを添加して一晩撹拌し、吸引濾過・水洗し、室温で乾燥して担持量0.1重量%の金/活性炭の触媒担持体を得た。得られた触媒担持体を、グルコース酸化反応の触媒として使用した。グルコース酸化反応速度を下表1に示す。
実施例6.(金/酸化チタン触媒担持体の調製)
[触媒担持体の調製]
水50mLに酢酸金[Au(CH3COO)3,Alfa Aesar製]の茶色粉末9.6mgを加え、実施例1と同様にして酢酸金コロイドの分散液を得た。
を使用した。
得られた触媒について、固定床流通反応装置(大倉理研(現ヘンミ計算尺株式会社)製)を用いて室温(25℃)における一酸化炭素の酸化反応を行い、触媒活性を評価した。内径6mmの石英反応管に、20mgの担持体粉末を0.5gの石英砂と混合して充填した。この反応管に、CO(1%)+O2(20%)+He(バランスガス)の混合ガスを100mL/minで流通させ、反応管出口のガスを光音響分析計(PAS)(LumaSense Technologies社製)で分析した。反応開始後30分にはCO及びCO2の濃度が安定したので、以下の手順により分析値からCO転化率を計算し、反応速度に換算した値を表2に示す。
YCO2:COのCO2への転化率(%)
CCO2:反応管出口のCO2濃度(%)
CiCO:反応管入口のCO濃度(1%)
FiCO=Fa×(CiCO/100)
=2.68×10-3mol h-1
=7.44×10-7mol s-1
FiCO:反応管入口のCO流量
Fa:反応管入口の全ガス流量
(100mL/min、モル換算0.268mol/h)
CiCO:反応管入口のCO濃度(1%)
RCO=FiCO×(YCO2/100)
RCO:CO反応速度(molh-1またはmols-1)
YCO2:COのCO2への転化率(%)
R1=RCO/Wcat
R1:触媒重量当たりのCO反応速度(mol h-1 g-1)
RCO:CO反応速度(molh-1)
Wcat.:触媒重量(g)
R2=RCO/MAu
R2:触媒中の金属金(Au)1モル数当たりのCO反応速度
(mol s-1 mol-1)
RCO:CO反応速度(mols-1)
MAu:触媒中のAuモル数(mol)
水25mLに酢酸金[Au(CH3COO)3,Alfa Aesar製]の茶色粉末9.6mgを加え、実施例1と同様にして酢酸金コロイドの分散液を得た。
水50mLに酢酸金[Au(CH3COO)3,Alfa Aesar製]の茶色粉末19.5mgを加え、更に保護コロイドとしてPVP565mgを加え実施例1と同様にして酢酸金コロイドの分散液を得た。
酢酸金に代えて塩化金酸を使用し、前記実施例6と同様の方法により触媒担持体を調製した。まず、水50mLに塩化金酸の0.1mol/L水溶液を0.26mLを加え、薄黄色の水溶液を得た。
実施例9.(金/酸化コバルト触媒担持体の調製)
触媒担持体の調製に用いた酸化コバルトの粉末は、沈殿法により調製した。硝酸コバルトの水溶液に中和等量の1.2倍量の炭酸ナトリウムを加えて、水酸化コバルトを沈殿させた。この沈殿を水洗、ろ過、乾燥の後、電気炉にて400℃で4時間焼成を行い、酸化コバルトの黒色粉末を得た。水50mLに酢酸金[Au(CH3COO)3,Alfa Aesar製]の茶色粉末10mgを加え、実施例1と同様にして酢酸金コロイドの分散液を得た。この分散液をマグネチックスターラーで攪拌しながら、酸化コバルトの粉末500mgを加え一晩攪拌した。撹拌を止めても沈殿が沈降しないため、PFA製の遠沈管に移し、遠心分離機で4000rpmの回転数で10分間回転した。遠沈管の中に泥状に沈殿した部分を残して上部の希薄な懸濁液を捨てた。捨てた分と同量の水を加えて1回目と同条件で2回目の遠心分離を行った。この操作を合計4回繰り返して沈殿を洗浄した。沈殿を室温で乾燥させて金担持量1.0重量%に相当する金/酸化コバルトの触媒担持体を得た。本試験例3において水として脱イオン蒸留水を使用した。実施例6で示したのと同様の方法でCO酸化反応速度を測定した結果を表3に示す。
実施例9と同様に調製した酸化コバルト粉末に金を担持することなしにそのまま触媒として用いた。実施例6で示したのと同様の方法でCO酸化反応速度を測定した結果を表3に示す。
水50mLに酢酸金[Au(CH3COO)3,Alfa Aesar製]の茶色粉末10mgを加え、実施例1と同様にして酢酸金コロイドの分散液を得た。この分散液をマグネチックスターラーで攪拌しながら、二酸化マンガン(キシダ化学製有機元素分析用の粒状二酸化マンガンを乳鉢で粉砕し、JIS Z8801に規定される公称目開き125μmの標準篩を通過した二酸化マンガン粉末)の粉末500mgを加え一晩攪拌した。攪拌を止めると徐々に二酸化マンガン粉末が沈殿し上澄み液は透明になり、金が二酸化マンガン表面に担持されたものと考えられた。その後、二酸化マンガン粉末を吸引濾過・水洗し、室温で乾燥して金担持量1重量%に相当する金/酸化マンガンの触媒担持体を得た。
実施例9と同様に調製した酸化コバルト粉末に金を担持することなしにそのまま触媒として用いた。実施例6で示したのと同様の方法でCO酸化反応速度を測定した結果を表3に示す。
Claims (10)
- 還元力を有する担体に、平均粒子径が100nm以下の金ナノ粒子が担持されてなる触媒担持体。
- 前記金ナノ粒子の平均粒子径が10nm以下である、請求項1に記載の触媒担持体。
- 前記還元力を有する担体が多孔質材料である、請求項1又は2に記載の触媒担持体。
- 前記還元力を有する担体が炭素材料又は金属酸化物である、請求項1〜3のいずれかに記載の触媒担持体。
- 前記還元力を有する担体が、粉状活性炭、繊維状活性炭、酸化チタン、酸化コバルト、及び酸化マンガンからなる群より選択される少なくとも1種である、請求項1〜4のいずれかに記載の触媒担持体。
- 平均粒子径が100nm以下の金ナノ粒子が担持されてなる触媒担持体を製造する方法であって、水の存在下で金カルボキシラートと還元力を有する担体を接触させる工程を含む、前記方法。
- 下記工程を含む、請求項6に記載の方法:
(i)金カルボキシラートを水に分散させて金カルボキシラートのコロイド分散液を調製する工程;
(ii)前記工程(i)で得られた金カルボキシラートのコロイド分散液に還元力を有する担体を接触させて金ナノ粒子を担持させる工程。 - 前記工程(ii)において、金カルボキシラートのコロイド分散液に更に還元剤を添加する、請求項7に記載の方法。
- 前記工程(ii)において、金カルボキシラートのコロイド分散液に更に保護コロイドを添加する、請求項7又は8に記載の方法。
- 前記金カルボキシラートが酢酸金である、請求項6〜9のいずれかに記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP2012194006 | 2012-09-04 | ||
PCT/JP2013/073521 WO2014038504A1 (ja) | 2012-09-04 | 2013-09-02 | 金ナノ粒子を担持してなる触媒担持体及びその製造方法 |
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JP6639388B2 (ja) | 2014-06-27 | 2020-02-05 | 株式会社Nbcメッシュテック | テアフラビン類の合成用触媒およびテアフラビン類の合成方法 |
US11332834B2 (en) * | 2014-10-21 | 2022-05-17 | Seoul National University R&Db Foundation | Catalyst and manufacturing method thereof |
JP2016087587A (ja) * | 2014-11-10 | 2016-05-23 | トヨタ自動車株式会社 | NOx選択還元用排ガス浄化触媒及び排ガス浄化方法 |
KR20180091953A (ko) | 2016-01-06 | 2018-08-16 | 바스프 코포레이션 | 백금족 금속 나노입자를 포함하는 디젤 산화 촉매 |
JP7043072B2 (ja) * | 2016-03-09 | 2022-03-29 | 東京都公立大学法人 | 金複合材料、その製造方法及び金ナノ触媒 |
CN108623074A (zh) * | 2018-05-16 | 2018-10-09 | 武汉霖泉环保科技有限公司 | 一种多功能复合磁种的制备方法及其在水处理磁絮凝过程中的应用 |
WO2020001840A1 (en) * | 2018-06-27 | 2020-01-02 | Rhodia Operations | Catalyst for base-free aerobic oxidation of glucose to glucaric acid; said process and said catalyst's preparation |
CN109939741A (zh) * | 2019-04-12 | 2019-06-28 | 福建农林大学 | 一种快速还原对硝基苯酚的磁性核壳结构催化剂的制备方法 |
CN110252338A (zh) * | 2019-06-06 | 2019-09-20 | 安徽建筑大学 | 一种金负载磁性氧化物催化剂及其制备方法和应用 |
CN111573650B (zh) * | 2020-04-24 | 2021-10-01 | 北京科技大学 | 一种制备高比表面积介孔碳粉末的方法 |
CN111450824B (zh) * | 2020-05-14 | 2023-05-02 | 河北大学 | 具有温度响应催化性能的金纳米催化剂的制备方法及应用 |
CN112872362B (zh) * | 2021-01-12 | 2023-02-10 | 青岛大学 | 一种金负载碲化锡纳米带及其制备方法和应用 |
CN114160162B (zh) * | 2021-12-29 | 2024-01-05 | 天津工业大学 | 一种Au/Co(OH)2层状金属氢氧化物空心结构光催化剂及其制备方法 |
CN114405546B (zh) * | 2022-01-27 | 2023-06-23 | 郑州大学 | 一种臭氧催化氧化用载锰纤维催化剂及其制备方法、应用 |
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WO2007055663A1 (en) * | 2005-11-14 | 2007-05-18 | Agency For Science, Technology And Research | Highly dispersed metal calatysts |
US20080206562A1 (en) * | 2007-01-12 | 2008-08-28 | The Regents Of The University Of California | Methods of generating supported nanocatalysts and compositions thereof |
US8900420B2 (en) * | 2007-08-20 | 2014-12-02 | 3M Innovative Properties Company | Catalyst production process |
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JP2005154302A (ja) * | 2003-11-21 | 2005-06-16 | Mitsubishi Gas Chem Co Inc | 糖質の酸化方法 |
JP2009220017A (ja) * | 2008-03-17 | 2009-10-01 | Tokyo Metropolitan Univ | 金微粒子を担体に分散・固定化する方法およびそれにより得られる材料 |
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