Catalyst and process using SSZ-91 and ZSM-12
AssigneeChevron U.S.A. Inc.
InventorsYihua Zhang, Adeola Florence Ojo, Guan-Dao Lei
Life of this patent
Estimating the term…
Abstract
An improved hydroisomerization catalyst and process for making a base oil product using a catalyst comprising SSZ-91 molecular sieve and ZSM-12 molecular sieve. The catalyst and process generally involves the use of a catalyst comprising an SSZ-91 molecular sieve combined with a ZSM-12 molecular sieve to produce dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst and process provide improved base oil cold properties, such as pour point and cloud point, along with other beneficial base oil properties.
Claims17
A hydroisomerization catalyst, useful to make dewaxed products including base oils having improved cloud and pour points, comprising
- a catalyst composition comprising an SSZ-91 molecular sieve and a ZSM-12 molecular sieve;
- wherein, the ZSM-12 molecular sieve is present in an amount from about 1.0 to 15.0 wt. %.
Dependencies are inferred from the claim text.