US 11,865,527 B2
Hydroisomerization catalysts
Yihua Zhang, Albany, CA (US); Adeola Florence Ojo, Pleasant Hill, CA (US); and Guan-Dao Lei, Walnut Creek, CA (US)
Assigned to CHEVRON U.S.A. INC., San Ramon, CA (US)
Filed by CHEVRON U.S.A. INC., San Ramon, CA (US)
Filed on Jan. 13, 2021, as Appl. No. 17/147,725.
Prior Publication US 2022/0219152 A1, Jul. 14, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B01J 29/06 (2006.01); B01J 29/76 (2006.01); B01J 35/02 (2006.01); C10G 45/64 (2006.01)
CPC B01J 29/7661 (2013.01) [B01J 35/026 (2013.01); C10G 45/64 (2013.01)] 15 Claims
 
1. A hydroisomerization catalyst comprising:
a molecular sieve belonging to the ZSM-48 family of zeolites;
an inorganic oxide support;
one or more first modifiers selected from Groups 8 to 10; and
one or more second modifiers selected from the group consisting of calcium (Ca), chromium (Cr), magnesium (Mg), lanthanum (La), barium (Ba), praseodymium (Pr), strontium (Sr), potassium (K) and neodymium (Nd);
wherein, the molecular sieve comprises: a silicon oxide to aluminum oxide mole ratio of about 40 to about 220; at least about 70% polytype 6 of the total ZSM-48-type material; and an additional EUO-type molecular sieve phase in an amount of between about 0 and about 7.0 percent by weight of the total ZSM-48-type material; and
wherein the molecular sieve has a morphology characterized as polycrystalline aggregates comprising crystallites collectively having an average aspect ratio of between about 1 and about 8.