Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Silicon containing or process of making
Reexamination Certificate
2006-04-18
2008-11-25
Nguyen, Cam N. (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Silicon containing or process of making
C502S255000, C502S312000, C502S321000, C502S322000, C502S349000, C502S350000, C502S353000, C502S354000, C502S407000, C502S415000, C502S439000, C502S351000, C502S355000
Reexamination Certificate
active
07456129
ABSTRACT:
A support for a gas-phase oxidation catalyst, the support including a solid acid, of which acid strength (H0) meets an inequality: −5.6≦H0≦1.5; a gas-phase oxidation catalyst including the above support and a complex oxide containing molybdenum and vanadium as essential components, the complex oxide being supported on the support; a process for producing acrylic acid by gas-phase catalytic oxidation of acrolein with molecular oxygen, the process including carrying out the gas-phase catalytic oxidation in a presence of the above gas-phase oxidation catalyst; and a process for producing the above support, the process including controlling an acid strength (H0) of a solid acid so as to meet an inequality: −5.6≦H0≦1.5 by adjusting a calcination temperature in a preparation of the solid acid contained in the support.
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Fukumoto Naohiro
Tanimoto Michio
Nguyen Cam N.
Nippon Shokubai Co. , Ltd.
Wenderoth Lind & Ponack LLP
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