Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1996-08-20
1998-12-22
Caldarola, Glenn
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502304, 502316, 502318, 502320, 502327, 502331, 502333, 502334, 4232453, 4232451, 588205, 588206, 588207, B01J 2300, B01J 800, A62D 300
Patent
active
058519483
ABSTRACT:
A catalyst for effective oxidation of volatile organic compounds (VOCs) includes 0.010-2 wt. % of a noble metal such as platinum in combination with 0.5-15 wt. % of a transition metal oxide such as chromium oxide (Cr.sub.2 O.sub.3), with at least the noble metal being deposited as a thin outer layer or shell not exceeding 0.10 mm thickness on a porous inert support such as alumina or silica having surface area of 10-400 m.sup.2 /g. The catalyst is made by adding the transition metal oxide such as chromium oxide (Cr.sub.2 O.sub.3) to the support material particles, and then subsequently mixing a solution of ammonium platinum nitrate with a suitable carrier liquid so as to form a "cluster" structure on the support material and which limits penetration of the active noble metal into the porous support, then drying, reducing, and calcining the metals-loaded support material. This catalyst composition and structure is highly effective for the oxidative destruction of VOCs in vapor form at concentrations of 1 ppm--5 vol. % and at reaction temperatures of 50.degree.-500.degree. C., 0-600 psig pressure, and space velocity of 1000-200,000 hr.sup.-1 to produce essentially only carbon dioxide and water products.
REFERENCES:
patent: 4119568 (1978-10-01), Nishida et al.
patent: 4892664 (1990-01-01), Miller
patent: 5009872 (1991-04-01), Chuang et al.
patent: 5057206 (1991-10-01), Engel et al.
patent: 5190668 (1993-03-01), Chuang
patent: 5276249 (1994-01-01), Greene et al.
patent: 5414201 (1995-05-01), Greene
patent: 5457268 (1995-10-01), Greene et al.
Chuang Karl T.
Zhang Mingqian
Zhou Bing
Bullock In Suk
Caldarola Glenn
Hydrocarbon Technologies, Inc.
Wilson Fred A.
LandOfFree
Supported catalyst and process for catalytic oxidation of volati does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Supported catalyst and process for catalytic oxidation of volati, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Supported catalyst and process for catalytic oxidation of volati will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2047489