Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2005-10-25
2005-10-25
Nguyen, Cam N. (Department: 1754)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
C502S326000, C502S327000, C502S332000, C502S333000, C502S334000, C502S335000, C502S336000, C502S337000, C502S338000, C502S339000, C502S349000, C502S350000, C502S351000, C502S353000, C502S355000, C502S439000, C502S407000, C502S415000, C502S302000, C502S258000, C502S259000, C502S260000, C502S261000, C502S262000
Reexamination Certificate
active
06958309
ABSTRACT:
A pretreatment method for increasing the average pore size of a catalyst support is disclosed which increases the diffusivity and effectiveness factor η. The pretreatment method includes calcining the support in moisturized air at an elevated temperature sufficient to increase the average pore size. In some embodiments, the support may be treated with an acidic/basic solution prior to the calcination step. Alternatively, the calcination step may occur in a gas mixture including water/air/acidic (or basic) gases.
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European Search Report for Application No. 03 25 4831 dated Oct. 31, 2003 (2 p.).
Cnossen Robin G.
Niu Tianyan
Straguzzi Gloria I.
Wang Daxiang
Wright Harold A.
Conley & Rose, P.C.
ConocoPhillips Company
Nguyen Cam N.
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