Heat treating a molecular sieve and catalyst

Details Heat treating a molecular sieve and catalyst Heat treating a molecular sieve and catalyst

2005-12-27

2005-12-27

Wood, Elizabeth D. (Department: 1755)

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

From nonhydrocarbon feed

C585S638000, C585S639000

Reexamination Certificate

active

06979756

ABSTRACT:
Disclosed is a method of heat treating a molecular sieve. The method comprises providing a template-containing molecular sieve, heating the molecular sieve under conditions effective to remove a portion of the template from the molecular sieve, and cooling the heated molecular sieve to leave an amount of template effective to cover catalytic sites within the molecular sieve. A catalyst composition is also provided which comprises a molecular sieve having a microporous structure and a binder, wherein between 10 and 90 vol % of the microporous structure is occupied by a material, the material comprising a template or a carbonaceous residue of a template, and the catalyst composition exhibits a Davison Index of not greater than 30.

REFERENCES:
patent: 4302565 (1981-11-01), Goeke et al.
patent: 4681864 (1987-07-01), Edwards et al.
Briend et al., “INfluence of the choice of the Template on the Short- and Long-Term Stability of SAPO-34 Zeolite”, J. Phys. Chem. pp. 8270-8276, 1995. (No month available).

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