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US 5,210,293 AGranted
Process and catalyst for the production of ethylene and acetic acid
AssigneeBP Chemicals Limited
InventorMelanie Kitson
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AssigneeBP Chemicals Limited
InventorMelanie Kitson
Estimating the term…
A process and catalyst for the production of ethylene and/or acetic acid by oxidation of ethane and/or ethylene with a molecular oxygen-containing gas in the presence of a catalyst composition comprising the elements A, X and Y in combination with oxygen, the gram-atom ratios of the elements A:X:Y being a:b:c, wherein A=Mo.sub.d Re.sub.e W.sub.f ; X=Cr, Mn, Nb, Ta, Ti, V and/or W; Y=Bi, Ce, Co, Cu, Fe, K, Mg, Ni, P, Pb, Sb, Si, Sn, Tl and/or U; a=1; b=0 to 2; c=0 to 2; d+e+f=a; d is either zero or greater than zero; e is greater than zero; and f is either zero or greater than zero.
A process for the production from gaseous ethane and/or ethylene of a product comprising ethylene and/or acetic acid, said process comprising the step of contacting the ethane and/or ethylene and a molecular oxygen-containing gas at elevated temperature with a catalyst composition comprising the elements A, X and Y in combination with oxygen, the gram-atom ratios of the elements A:X:Y being a:b:c, wherein
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
With molecular oxygen: of saturated hydrocarbyl groups
By dehydrogenation with a hydrogen acceptor: with oxygen as an acceptor
With molecular oxygen: of unsaturated compounds containing no six-membered aromatic ring
Acyclic or carbocyclic compounds
Term ended 19 Jun 2010 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The present invention relates to a process and catalyst for the production of ethylene and acetic acid.
The catalytic dehydrogenation of ethane is described in a number of patent publications, representative of which may be mentioned for example U.S. Pat. Nos. 4,250,346; 4,524,236 and 4,568,790 and European Patent Publication No. 0294845.
U.S. Pat. No. 4,250,346 discloses the oxidative dehydrogenation of ethane to ethylene in a gas phase reaction at relatively high levels of conversion, selectivity and productivity at a temperature less than 500.degree. C. using as catalyst a composition comprising the elements molybdenum, X and Y in the ratio
The process of the invention will now be further illustrated by reference to the following Examples. In the Examples the following terms are used: ##EQU1## wherein [ ]=concentrations in mol %
and [C.sub.2 H.sub.6 ]=concentration of unconverted ethane.
In the examples the catalyst compositions are expressed in terms of relative gram-atoms of elements. It will be understood that the elements are present in combination with oxygen.