Patent ID: 11891347
Assignee: EXELUS INC.
Field: Chemical engineering (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 5:
6. A solid-acid alkylation catalyst, comprising:
a zeolite structure comprising sodalite cages and supercages, a Si/Al molar ratio of 20 or less, less than 0.5 weight percent alkali metals, rare earth elements wherein the molar ratio of rare earth elements to (Si and Al) is in the range of 0.06 to 0.20; and
characterizable by a Catalyst Lifetime of 2 or greater where the Catalyst Lifetime parameter is defined as the catalyst age when olefin conversion falls below 90% using a test reaction where the solid-acid catalyst is loaded in a fixed-bed reactor such that the dT/dP>10 (diameter of tube to diameter of catalyst particles) and L/dP>50 (length of catalyst bed to diameter of catalyst particles) and exposed to a flow comprising a feed stream comprising 100:1 molar ratio of isobutane:n-butenes, wherein the n-butenes comprise the olefin, at 60° C. and 300 psig without regeneration of the solid-acid alkylation catalyst, and wherein a product of the test reaction has a RON of at least 92.