Synthesis of SAPO-34 with essentially pure CHA framework

Details Synthesis of SAPO-34 with essentially pure CHA framework Synthesis of SAPO-34 with essentially pure CHA framework

2005-06-20

2009-08-25

Brunsman, David M (Department: 1793)

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

C423SDIG030

Reexamination Certificate

active

07578987

ABSTRACT:
A process for producing an ElAPO molecular sieve with essentially pure CHA framework having an average crystal size less than about 5 micrometers is disclosed. When El is silicon, the process allows for a broad range of silicon content, and produces a catalyst with a high selectivity for the conversion of methanol to olefins. The process includes making a crystalline metallo-aluminophosphate molecular sieve of the formula (ElxAlyPz)O2from a mixture comprising an aluminum source, a phosphorous source, water, an El source, a fluorine source and an organic template source wherein the molar ratio of the organic template source to phosphorous is less than about 0.5; crystallizing the molecular sieve at a temperature between 100 C and 250 C and calcining in air.

REFERENCES:
patent: 4076796 (1978-02-01), Reh et al.
patent: 4440871 (1984-04-01), Lok et al.
patent: 4786487 (1988-11-01), Kuehl
patent: 5096684 (1992-03-01), Guth et al.
patent: 5932512 (1999-08-01), Sun
patent: 6001328 (1999-12-01), Lillerud et al.
patent: 6166282 (2000-12-01), Miller
patent: 6287522 (2001-09-01), Lomas
patent: 6767858 (2004-07-01), Cao et al.
Yan Xu et al., “The Synthesis of SAPO-34 and CoSAPO-34 from a Triethylamine- Hydrofluoric Acid-Water System”, 1990, 86(2), 425-429.

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