Patent ID: 8617387

Claim:
A process for catalytically dewaxing a light waxy hydrocarbon feedstock, comprising: a) contacting the hydrocarbon feedstock in a first hydroisomerization zone under first hydroisomerization dewaxing conditions with a first hydroisomerization catalyst 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 to provide a second isomerization stream, wherein each of the first hydroisomerization catalyst and the second hydroisomerization catalyst comprises zeolite SSZ-32 and a Group VIII metal; the first hydroisomerization catalyst further comprising a metal modifier selected from the group consisting of Mg, Ca, Sr, Ba, K, La, Pr, Nd, Cr, and combinations thereof; and the second hydroisomerization catalyst consists essentially of the molecular sieve, the Group VIII metal, and a refractory oxide binder; wherein the first hydroisomerization catalyst has a first level of selectivity for the isomerization of n-paraffins in the feedstock, the second hydroisomerization catalyst has 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.