Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Reissue Patent
2006-04-18
2006-04-18
Tsang, Cecilia J. (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C562S546000, C562S547000, C502S209000, C502S210000, C502S211000, C502S212000, C502S213000, C502S214000, C502S215000, C502S248000, C502S257000, C502S305000, C502S313000
Reissue Patent
active
RE039074
ABSTRACT:
The present invention relates to a process for the selective preparation of acetic acid from a gaseous feed comprising ethane, ethylene or mixtures thereof plus oxygen at elevated temperature, which comprises bringing the gaseous feed into contact with a catalyst comprising the elements Mo, Pd, X and Y in gram atom ratios a:b:c:d in combination with oxygenin-line-formulae description="In-line Formulae" end="lead"?MoaPdbXcYd (I)in-line-formulae description="In-line Formulae" end="tail"?where the symbols X and Y have the following meanings:X is one or more elements selected from the group consisting of: Cr, Mn, Nb, Ta, Ti, V, Te and/or W, in particular Nb, V and W;Y is one or more elements selected from the group consisting of: B, Al, Ga, In, Pt, Zn, Cd, Bi, Ce, Co, Cu, Rh, Ir, Au, Ag, Fe, Ru, Os, K, Rb, Cs, Mg, Ca, Sr, Ba, Zr, Hf, Ni, P, Pb, Sb, Si, Sn, TI and U, in particular Ca, Sb, Te and Li. The present invention further provides a catalyst for the selective preparation of acetic acid comprising the elements Mo, Pd, X and Y in the gram atom ratios a:b:c:d in combination with oxygen. The process can be illustrated by the following reaction scheme,
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Borchert Holger
Dingerdissen Uwe
Celanese Chemicals Europe GmbH
Frommer & Lawrence & Haug LLP
Oh Taylor V.
Tsang Cecilia J.
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