Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2007-05-15
2007-05-15
Saeed, Kamal A. (Department: 1626)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
C502S331000, C502S345000, C562S545000
Reexamination Certificate
active
10433008
ABSTRACT:
A catalyst for the hydrogenation of C4-dicarboxylic acids and/or their derivatives, preferably maleic anhydride, in the gas phase comprises from 5 to 100% by weight, preferably from 40 to 90% by weight, of copper oxide and from 0 to 95% by weight, preferably from 10 to 60% by weight, of one or more metals or compounds thereof selected from the group consisting of Al, Si, Zn, Pd, La, Ce, the elements of groups III A to VIII A and groups I A and II A as active composition applied in the form of a thin layer to an inert support material.
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Borchert Holger
Fischer Rolf-Hartmuth
Rahn Ralf-Thomas
Rösch Markus
Schlitter Stephan
BASF - Aktiengesellschaft
Novak Druce & Quigg LLP
Saeed Kamal A.
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