Process for preparing spherical shaped pelletized oxide catalyst

Details Process for preparing spherical shaped pelletized oxide catalyst Process for preparing spherical shaped pelletized oxide catalyst

1979-05-11

1980-12-09

Konopka, P. E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252435, 252448, 562532, 562534, 562535, B01J 2118, B01J 2114, C07C 5125, C07C 5704

Patent

active

042383595

ABSTRACT:
A catalyst composition for use in preparing unsaturated carboxylic acids by the vapor-phase oxidation of unsaturated aldehydes, said catalyst composition comprising an oxide composition containing as essential ingredients (1) phosphorus, (2) molybdenum and (3) X in which X is at least one element selected from the group consisting of thallium and metals of Groups IA and II of the periodic table, characterized in that said oxide composition has a surface area of 4 to 20 m.sup.2 /g and a pore volume of 0.08 to 0.5 ml/g, whereby said catalyst composition has an excellent reproducibility of catalytic activity and a process for preparing aforesaid catalyst composition.

REFERENCES:
patent: 3661801 (1972-05-01), Gutmann et al.
patent: 3795703 (1974-03-01), Niina et al.
patent: 3956377 (1976-05-01), Dolhyn et al.
patent: 3976688 (1976-08-01), Akiyama et al.
patent: 4077912 (1978-03-01), Dolhyj et al.

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