Process for manufacture of an attrition resistant catalyst

Details Process for manufacture of an attrition resistant catalyst Process for manufacture of an attrition resistant catalyst

2005-04-12

2005-04-12

Nguyen, Ngoc-Yen (Department: 1754)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Silicon containing or process of making

C502S008000, C502S209000, C502S504000

Reexamination Certificate

active

06878668

ABSTRACT:
A method for manufacturing of an attrition resistant vanadium/phosphorous oxide catalyst involving forming an aqueous slurry comprising; vanadium/phosphorous oxide catalyst or vanadium/phosphorous oxide catalyst precursor particles, an aqueous solution of H3PO4, and optionally an aqueous colloidal silica sol, an aqueous polysilicic acid solution or mixture thereof and then spray drying the slurry to form attrition resistant catalyst precursor followed by calcining/activating the spray dried precursor. Such a catalyst is particularly useful in oxidation processes such as the catalytic air oxidation of butane to maleic anhydride.

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U.S. Appl. No. 09/163,680 filed Sep. 30, 1998.
U.S. Provisional Application 06/109,403 filed Nov. 20, 1998.

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