Method of preparing an improved catalyst

Details Method of preparing an improved catalyst Method of preparing an improved catalyst

1983-11-10

1986-06-17

Dees, Carl F.

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

Zeolite or clay, including gallium analogs

And group viii containing

502 66, B01J 2930

Patent

active

045956693

ABSTRACT:
A reforming catalyst comprising a type L zeolite containing at least one Group VIII noble metal may be prepared by a method involving contacting the freshly prepared catalyst with oxygen, hydrogen or an inert gas and optionally water at elevated temperatures, contacting the catalyst at elevated temperatures with a source of chlorine such as HCl or Cl.sub.2 and preferably oxygen and water, and contacting the catalyst at elevated temperatures with oxygen and optionally water. Prior to use the catalyst is reduced by contact at elevated temperatures with hydrogen and optionally water. This process enhances the dispersion of the noble metal particles.

REFERENCES:
patent: 3216789 (1965-11-01), Breck et al.
patent: 3318802 (1967-05-01), Martin
patent: 3534087 (1970-10-01), Leftin et al.
patent: 3644220 (1972-02-01), Kearby
patent: 4104320 (1978-08-01), Bernard et al.
Translation-French Patent 2,360,540 issued 4/7/78.
Flynn et al., J. Catal., 33, pp. 233-248 (1974).

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