Regeneration of methanol/methyl ether conversion catalysts

Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Gas or vapor treating

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585640, B01J 2938, C07C 124, C07C 120

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active

047771569

ABSTRACT:
A process for using hydrogen-containing gas to regenerate a zeolite catalyst comprising at least some crystalline aluminosilicate zeolitic material having pore windows formed by 8-membered rings of oxygen atoms, e.g., ZSM-34, which has been used to promote conversion of methanol and/or methyl ether to light olefins. Contact of such catalysts with hydrogen-containing gas such as hydrogen or synthesis gas at particular regeneration temperatures and pressures can restore the activity of such catalysts either in the presence or absence of organic reactants without forming potentially catalyst-damaging by-products such as water.

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patent: 4079095 (1978-03-01), Givens et al.
patent: 4079096 (1978-03-01), Givens et al.
patent: 4144189 (1979-03-01), Kirkbride
patent: 4358395 (1982-11-01), Haag et al.
patent: 4423272 (1983-12-01), Forbus et al.
patent: 4683052 (1987-07-01), Degnan et al.

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