Process for conversion of acyclic C5 compounds to cyclic C5 compounds and catalyst composition for use therein
AssigneeExxonMobil Chemical Patents Inc.
InventorsLarry L. Iaccino, Jeremy W. Bedard, Tilman W. Beutel, Jocelyn A. Kowalski
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Abstract
Disclosed is a process for the conversion of acyclic C5 feedstock to a product comprising cyclic C5 compounds, such as for example, cyclopentadiene, and catalyst compositions for use in such process. The process comprising the steps of contacting said feedstock and, optionally, hydrogen under acyclic C5 conversion conditions in the presence of a catalyst composition to form said product. The catalyst composition comprises a Group 10 metal, and, optionally, a Group 11 metal, on a catalyst support with a Group 1 alkali metal silicate and/or a Group 2 alkaline earth metal silicate.
Claims18
A process for conversion of an acyclic C5 feedstock to a product comprising cyclic C5 compounds including cyclopentadiene, said process comprising the steps of contacting said feedstock and, optionally, hydrogen under acyclic C5 conversion conditions in the presence of a catalyst composition to form said product, wherein said catalyst composition comprises a Group 10 metal on a catalyst support, with a Group 1 alkali metal silicate and/or a Group 2 alkaline earth metal silicate and, optionally, a Group 11 metal.
A process for conversion of an acyclic C5 feedstock to a product comprising cyclic C5 compounds including cyclopentadiene, said process comprising the steps of contacting said feedstock and, optionally, hydrogen under acyclic C5 conversion conditions in the presence of a catalyst composition to form said product, wherein said catalyst composition is made by the method comprising the steps of:
- (a) contacting a catalyst support with a source of a Group 1 alkali metal silicate and/or a Group 2 alkaline earth metal silicate to form a silicate-containing catalyst precursor;
- (b) heating said silicate-containing catalyst precursor in one or more steps to a first temperature of 450° C. or above and then cooling to form a heat-treated silicate-modified catalyst precursor;
- (c) contacting said heat-treated silicate-modified catalyst precursor of step (b) with a source of a Group 10 metal, and, optionally, a Group 11 metal, to form a metal silicate catalyst precursor;
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- (d) drying said metal silicate catalyst precursor in one or more steps at temperatures from 90° C. to 400° C. to form said catalyst composition, whereby said catalyst composition having said Group 10 metal, and, optionally, a Group 11 metal, deposited thereon.
Dependencies are inferred from the claim text.