Molecular sieve ssz-94, catalyst, and methods of use thereof
AssigneeChevron U.S.A. Inc.
InventorAdeola OJO
Life of this patent
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Abstract
The present application pertains to family of new crystalline molecular sieves designated SSZ-94. Molecular sieve SSZ-94 is structurally similar to sieves falling within the MTT structure type such as SSZ-32x, SSZ-32, ZSM-23, EU-13, ISI-4, and KZ-1 family of molecular sieves. SSZ-94 is characterized as having magnesium.
Claims24
A molecular sieve comprising an MTT-type framework, a mole ratio of from about 15 to about 100 of silicon oxide to aluminum oxide, a total micropore volume of between 0.02 and 0.05 cc/g, external surface area of between 80 and 120 m2/g and magnesium.
A process for converting hydrocarbons, comprising contacting a hydrocarbonaceous feed under hydrocarbon converting conditions with a catalyst comprising a molecular sieve, the molecular sieve comprising an MTT-type framework, a mole ratio of from about 15 to about 100 of silicon oxide to aluminum oxide, a total micropore volume of between 0.02 and 0.05 cc/g, an external surface area of between 80 and 120 m2/g, and magnesium.
A method of preparing molecular sieve SSZ-94, comprising:
- (a) preparing a reaction mixture comprising:
- (i) at least one active source of silicon;
- (ii) at least one active source of aluminum;
- (iii) at least one active source of magnesium;
- (iv) at least one active source of an alkali metal;
- (v) hydroxide ions;
- and
- (vi) an organic templating agent consisting of at least one small, neutral amine capable of forming the zeolite, said amine containing four to about eight carbon atoms and (a) only carbon, nitrogen, and hydrogen atoms, (b) one primary, secondary or tertiary, but not quaternary, amino group, and (c) a tertiary nitrogen atom, or at least one tertiary carbon atom, or a nitrogen atom bonded directly to at least one secondary carbon atom;
- (b) maintaining the reaction mixture under conditions sufficient to form crystals of the zeolite wherein the zeolite is prepared in the absence of an amine component.
- (c) recovering the crystals of the zeolite,
Dependencies are inferred from the claim text.