Process and catalysts for the production of ethylene and propylene from low-carbon syngas
AssigneeGreyrock Technology, LLC
InventorsRobert Schuetzle, Dennis Schuetzle
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Abstract
An improved process and catalysts for efficiently producing ethylene and propylene from low-carbon syngas is described. The process comprises contacting the low-carbon syngas with a ZnO-impregnated ZnMoO4 spinel catalyst or a ZnO-impregnated ZnAl2O4 spinel catalyst; wherein the said catalysts demonstrate selectivities of up to about 80% for C2-C4 alkenes, at syngas H2/CO ratios of 1.0 to 3.0, at temperatures of 250 to 425° C. (482-797° F.), at pressures of 150 to 350 psi, and at space velocities of 4,000 to 15,000 hr−1 with CO conversion efficiencies of 40-55%.
Claims9
A process for producing ethylene and propylene from syngas, wherein the process comprises:
- a conversion step consisting of contacting syngas with a catalyst at a syngas H2/CO ratio ranging from 1.0 to 3.0, at a temperature ranging from 250° C. to 425° C., and at a pressure ranging from 100 psi to 350 psi, thereby producing ethylene and propylene from syngas in said conversion step, wherein the catalyst is a spinel, wherein the catalyst is either ZnO impregnated on ZnMoO4 or ZnO impregnated on ZnAl2O4, and wherein the catalyst provides for a combined selectivity ranging from 50% to 80% for C2-C4 olefins and a CO conversion ranging from 40% to 75%.
Dependencies are inferred from the claim text.