Methods for preparing catalysts for methacrolein oxidation

Details Methods for preparing catalysts for methacrolein oxidation Methods for preparing catalysts for methacrolein oxidation

2011-04-12

2011-04-12

Hailey, Patricia L (Department: 1732)

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

Catalyst or precursor therefor

Phosphorus or compound containing same

C502S209000, C502S210000, C502S211000, C502S212000, C502S213000, C502S214000

Reexamination Certificate

active

07923404

ABSTRACT:
Methods of making catalysts for oxidation of unsaturated and/or saturated aldehyde to unsaturated acids is disclosed where the catalyst including at least molybdenum (Mo) and phosphorus (P), where the catalyst has a pore size distribution including at least 50% medium pores and if bismuth is present, a nitric acid to molybdenum mole ratio of at least 0.5:1 or at least 6.0:1 moles of HNO3per mole of Mo12.

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