ChemInform Abstract: CATALYSIS BY HETEROPOLY COMPOUNDS. IV. OXIDATION OF METHACROLEIN TO METHACRYLIC ACID OVER 12-MOLYBDOPHOSPHORIC ACID

Y. KONISHI; K. SAKATA; M. MISONO; Y. YONEDA

doi:10.1002/chin.198252115

ChemInform Abstract: CATALYSIS BY HETEROPOLY COMPOUNDS. IV. OXIDATION OF METHACROLEIN TO METHACRYLIC ACID OVER 12-MOLYBDOPHOSPHORIC ACID

Chemischer Informationsdienst ◽

10.1002/chin.198252115 ◽

1982 ◽

Vol 13 (52) ◽

Author(s):

Y. KONISHI ◽

K. SAKATA ◽

M. MISONO ◽

Y. YONEDA

Keyword(s):

Methacrylic Acid ◽

Heteropoly Compounds ◽

Molybdophosphoric Acid

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Catalysis by heteropoly compounds IV. Oxidation of methacrolein to methacrylic acid over 12-molybdophosphoric acid

Journal of Catalysis ◽

10.1016/0021-9517(82)90157-9 ◽

1982 ◽

Vol 77 (1) ◽

pp. 169-179 ◽

Cited By ~ 74

Author(s):

Y KONISHI

Keyword(s):

Methacrylic Acid ◽

Heteropoly Compounds ◽

Molybdophosphoric Acid

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Enhancement of catalytic activity of the ammonium/potassium salt of 12-molybdophosphoric acid by iron ion addition for the oxidation of isobutane to methacrylic acid

Catalysis Letters ◽

10.1007/bf00806116 ◽

1995 ◽

Vol 32 (1-2) ◽

pp. 215-226 ◽

Cited By ~ 73

Author(s):

F. Cavani ◽

E. Etienne ◽

M. Favaro ◽

A. Galli ◽

F. Trifir� ◽

...

Keyword(s):

Catalytic Activity ◽

Methacrylic Acid ◽

Potassium Salt ◽

Molybdophosphoric Acid ◽

Iron Ion

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Catalysis by heteropoly compounds. VIII. Reduction-oxidation and catalytic properties of 12-molybdophosphoric acid and its alkali salts. The role of redox carriers in the bulk

The Journal of Physical Chemistry ◽

10.1021/j100247a021 ◽

1985 ◽

Vol 89 (1) ◽

pp. 80-85 ◽

Cited By ~ 60

Author(s):

Noritaka Mizuno ◽

Tetsuji Watanabe ◽

Makoto Misono

Keyword(s):

Catalytic Properties ◽

Heteropoly Compounds ◽

Molybdophosphoric Acid ◽

Alkali Salts

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Catalysis by Heteropoly Compounds. XVIII. Oxidation of Methacrylaldehyde over 12-Molybdophosphoric Acid and Its Alkali Salts

Bulletin of the Chemical Society of Japan ◽

10.1246/bcsj.64.243 ◽

1991 ◽

Vol 64 (1) ◽

pp. 243-247 ◽

Cited By ~ 29

Author(s):

Noritaka Mizuno ◽

Tetsuji Watanabe ◽

Makoto Misono

Keyword(s):

Heteropoly Compounds ◽

Molybdophosphoric Acid ◽

Alkali Salts

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Investigation of Cu- and Fe-Doped CsH3PMo11VO40 Heteropoly Compounds for the Selective Oxidation of Methacrolein to Methacrylic Acid

Industrial & Engineering Chemistry Research ◽

10.1021/ie3032718 ◽

2013 ◽

Vol 52 (12) ◽

pp. 4484-4490 ◽

Cited By ~ 32

Author(s):

Heng Zhang ◽

Ruiyi Yan ◽

Li Yang ◽

Yanyan Diao ◽

Lei Wang ◽

...

Keyword(s):

Selective Oxidation ◽

Methacrylic Acid ◽

Heteropoly Compounds

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Pore structures of the monovalent salts of the heteropoly compounds, 12-tungstophosphoric and 12-molybdophosphoric acid

Journal of Colloid and Interface Science ◽

10.1016/0021-9797(84)90060-2 ◽

1984 ◽

Vol 101 (2) ◽

pp. 479-488 ◽

Cited By ~ 101

Author(s):

J.B McMonagle ◽

J.B Moffat

Keyword(s):

Heteropoly Compounds ◽

Molybdophosphoric Acid ◽

Pore Structures

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Studies of the Acidity and Ionic Conductivity of Silica-Supported Heteropoly Compounds. III. Paramagnetic Species Involved in the Dehydration Reaction on Supported 12-Molybdophosphoric Acid and Its Salts

Bulletin of the Chemical Society of Japan ◽

10.1246/bcsj.63.2076 ◽

1990 ◽

Vol 63 (7) ◽

pp. 2076-2082 ◽

Cited By ~ 5

Author(s):

Reiji Ohtsuka ◽

Jun-ichi Kobayashi

Keyword(s):

Ionic Conductivity ◽

Paramagnetic Species ◽

Heteropoly Compounds ◽

Molybdophosphoric Acid ◽

Dehydration Reaction

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Dehydrogenation, Deamination and Disproportionation of Diethylamine over Heteropoly Compounds

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19952047 ◽

1995 ◽

Vol 60 (12) ◽

pp. 2047-2056 ◽

Cited By ~ 2

Author(s):

Abdel-Ghaffar A. Ali ◽

Laila I. Ali

Keyword(s):

Reaction Mechanism ◽

Continuous Flow ◽

Flow System ◽

Tungstophosphoric Acid ◽

Lewis Acidity ◽

Heteropoly Compounds ◽

Molybdophosphoric Acid ◽

System Transformation ◽

Continuous Flow System

In a continuous flow system, transformation of diethylamine over heteropoly compounds was studied at 250 to 350 °C. It was found that ammonium molybdophosphate and tungstophosphate are the most active catalysts while copper molybdophosphate is the most stable one. 12-Molybdophosphoric acid and its salts were highly selective catalysts for dehydrogenation of diethylamine to ethyliden- ethylamine whereas 12-tungstophosphoric acid and its salts directed the reaction selectively to deamination. The role of Lewis acidity of metal cations, Bronsted acidity and basic sites in the reaction mechanism is discussed.

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