Method for converting ethylene into propylene

Details Method for converting ethylene into propylene Method for converting ethylene into propylene

2005-06-27

2009-12-29

Bullock, In Suk (Department: 1797)

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By alkyl transfer, e.g., disproportionation, etc.

C585S643000

Reexamination Certificate

active

07638672

ABSTRACT:
The invention relates to a method for converting ethylene into propylene consisting in reacting said ethylene with a supported metal compound comprising an aluminium oxide based support to which a tungsten hydride is grafted. Said reaction is carried out at a temperature ranging from 20 to 600° C., preferably between 50 and 350° C., at an absolute pressure ranging from 0.01 to 8 MPa, preferably between 0.01 and 1 MPa. A catalyst is regeneratable by introducing hydrogen at a temperature of 50-300° C.

REFERENCES:
patent: 3634538 (1972-01-01), Steffgen
patent: 3865751 (1975-02-01), Banks et al.
patent: 6229060 (2001-05-01), Vidal et al.
patent: 6469225 (2002-10-01), Basset et al.
patent: 6632765 (2003-10-01), Chen
patent: 2002/0002317 (2002-01-01), Schwab et al.
O'Neill, Rooney, “Direct transformation of ethylene and propylene on an olefin metathesis catalyst”, 1972, pp. 4383-4384, vol. 94, No. 12, Journal of the American Chemical Society.

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