Molecular sieve ssz-92, catalyst, and methods of use thereof
AssigneeChevron U.S.A. Inc.
InventorsAdeola OJO, Yihua ZHANG, Guan-Dao LEI, Howard Steven LACHEEN
Life of this patent
Estimating the term…
Abstract
The present application pertains to family of new crystalline molecular sieves designated SSZ-92. Molecular sieve SSZ-92 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves and is characterized as having magnesium.
Claims24
A molecular sieve belonging to the ZSM-48 family of zeolites, wherein the molecular sieve comprises:
- a silicon oxide to aluminum oxide mole ratio of 50 to 220, at least 70% polytype 6 of the total ZSM-48-type material present in the product, an additional EUO-type molecular sieve phase in an amount of between 0 and 3.5 percent by weight of the total product, and magnesium;
- wherein the molecular sieve has a morphology characterized as polycrystalline aggregates comprising crystallites collectively having an average aspect ratio of between 1 and 8.
A process for converting hydrocarbons, comprising contacting a hydrocarbonaceous feed under hydrocarbon converting conditions with a catalyst comprising a molecular sieve, the molecular sieve belonging to the ZSM-48 family of zeolites, wherein the molecular sieve comprises:
- a silicon oxide to aluminum oxide mole ratio of 50 to 220, at least 70% polytype 6 of the total ZSM-48-type material present in the product, an additional EUO-type molecular sieve phase in an amount of between 0 and 3.5 percent by weight of the total product, and magnesium;
- wherein the molecular sieve has a morphology characterized as polycrystalline aggregates comprising crystallites collectively having an average aspect ratio of between 1 and 8.
A method of preparing molecular sieve SSZ-92, comprising:
- (a) preparing a reaction mixture containing:
- at least one active source of silicon,
- at least one active source of aluminum,
- at least one active source of magnesium,
- at least one source of an element selected from Groups 1 and 2 of the Periodic Table,
- hydroxide ions,
- hexamethonium cations, and
- water;
- and
- (b) subjecting the reaction mixture to crystallization conditions sufficient to form crystals of the molecular sieve;
- wherein the molecular sieve comprises:
- a silicon oxide to aluminum oxide mole ratio of 50 to 200,
- at least 70% polytype 6 of the total ZSM-48-type material present in the product, and
- an additional EUO-type molecular sieve phase in an amount of between 0 and 3.5 percent by weight of the total product;
- and
- wherein the molecular sieve has a morphology characterized as polycrystalline aggregates comprising crystallites collectively having an average aspect ratio of between 1 and 8.
Dependencies are inferred from the claim text.