Regeneration of a titanium-containing molecular sieve

Details Regeneration of a titanium-containing molecular sieve Regeneration of a titanium-containing molecular sieve

1996-02-13

1998-04-21

Griffin, Walter D.

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

By heat

502 34, 502 53, 502 55, B01J 2034, B01J 3802, B01J 3806, B01J 3810

Patent

active

057417490

ABSTRACT:
A titanium-containing molecular sieve which has been used as an oxidation catalyst is regenerated to provide a level of performance comparable to that of freshly prepared catalyst by heating in the presence of a gas stream comprised of less than 5 volume percent molecular oxygen. The regeneration temperature may be in the range of from 150.degree. C. to 700.degree. C. The same batch of catalyst thus may be used over an extended period of time in a continuous epoxidation process by periodic practice of the aforedescribed reactivation method.

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"Titanium-Silicalite: A Novel Derivative in the Pentasil Family", G. Perego et al., pp. 129-136, Proc. 7th Intern. Zeolite Confer., (1986) Tokyo (no month).

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