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US 2012/0264987 A1Published application
Process for Manufacturing Molecular Sieve of MFS Framework Type and Its Use
AssigneeExxonMobil Chemical Patents Inc.
InventorsMachteld M. Mertens, An Verberckmoes, Ivy D. Johnson
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Abstract
A crystalline molecular sieve of MFS framework type manufactured by the method disclosed herein. A hydrocarbon conversion process using the crystalline molecular sieve is disclosed.
Claims20
A crystalline molecular sieve of MFS framework type manufactured by the method comprising the steps of:
- (a) providing a mixture comprising at least one source of ions of tetravalent element (Y), at least one source of ions of trivalent element (X), at least one hydroxide source (OH−), at least one structure-directing-agent (R), at least one seed source (Seed), and water (H2O), said mixture having the following mole composition (expressed in term of oxide):
- YO2:(n)X2O3:(x)OH−:(y)R:(z)H2O+(m)Seed
- wherein m is in the range of from about 10 wtppm to about 2 wt. % (based on total weight of the synthesis mixture), n is in the range of from about 0.005 to 0.05, x is in the range of from about 0.01 to about 0.3, y is in the range of from about 0.03 to about 2;
- and z is in the range of from about 3 to about 8;
- and
- (b) treating said mixture under crystallization conditions to form a product comprising said crystalline molecular sieve of MFS framework type and less than 50 wt. % of non-MFS material, based on the combination weight of non-MFS materials and the molecular sieve(s) of MFS framework type,
- wherein said structure-directing-agent R comprises N,N,N,N′,N′,N′-hexaethylpentane diammonium salt (R1), said crystallization conditions comprise a temperature in the range of from about 150° C. to about 250° C., and a crystallization time less than 100 hr, and wherein the weight hourly throughput is at least 0.002 hr−1.
4 more elements
A process for hydrocarbon conversion comprising the step of contacting said hydrocarbon with a crystalline molecular sieve of MFS framework type under hydrocarbon conversion conditions, said crystalline molecular sieve manufactured by the method comprising the steps of:
- (a) providing a mixture comprising at least one source of ions of tetravalent element (Y), at least one source of ions of trivalent element (X), at least one hydroxide source (OH−), at least one structure-directing-agent (R), at least one seed source (Seed), and water (H2O), said mixture having the following mole composition (expressed in term of oxide):
- YO2:(n)X2O3:(x)OH−:(y)R:(z)H2O+(m)Seed
- wherein m is in the range of from about 10 wtppm to about 2 wt. % (based on total weight of the synthesis mixture), n is in the range of from about 0.005 to 0.05, x is in the range of from about 0.01 to about 0.3, y is in the range of from about 0.03 to about 2;
- and z is in the range of from about 3 to about 8;
- and
- (b) treating said mixture under crystallization conditions to form a product comprising said crystalline molecular sieve of MFS framework type and less than 50 wt. % of non-MFS material, based on the combination weight of non-MFS materials and the molecular sieve(s) of MFS framework type,
- wherein said structure-directing-agent R comprises N,N,N,N′,N′,N′-hexaethylpentane diammonium salt, said crystallization conditions comprise a temperature in the range of from about 150° C. to about 250° C., and a crystallization time less than 100 hr, and wherein the weight hourly throughput is at least 0.002 hr−1.
4 more elements
Dependencies are inferred from the claim text.