Patent ID: 9677016
Date: 2017-06-13
CPC Classifications: B01J,C01B,C10G

Claim:
1. A process for catalytically dewaxing a waxy hydrocarbon feedstock, comprising: a) contacting the hydrocarbon feedstock in a first hydroisomerization zone under first hydroisomerization dewaxing conditions with a first hydroisomerization catalyst comprising SSZ-32x to provide a first isomerization stream; and b) contacting at least a portion of the first isomerization stream in a second hydroisomerization zone under second hydroisomerization dewaxing conditions with a second hydroisomerization catalyst which comprises a 1-D, 10-ring, a molecular sieve and a Group VIII metal, to provide a second isomerization stream; with the first hydroisomerization catalyst having a first level of selectivity for the isomerization of n-paraffins in the feedstock, the second hydroisomerization catalyst having a second level of selectivity for the isomerization of n-paraffins in the feedstock, and wherein the first level of selectivity is higher than the second level of selectivity.