Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1986-02-07
1987-12-01
Shine, W. J.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502525, 4232155, B01J 2310, B01J 2312, B01J 2374
Patent
active
047104872
ABSTRACT:
A catalyst for the reaction of hydrocarbons and gases and for the reduction of nitric oxides, includes the active substance thorium oxide in addition to LaCoO.sub.3. The catalyst has as the wash coat oxide-ceramic materials and spinels of the oxides of magnesium, aluminum, titanium and zirconium, with an addition of cerium oxide and lanthanum oxide, and preformed and acid-solubilized LaCoO.sub.3 as the active substance. The catalyst is formed without the active substance LaCoO.sub.3 for use as a high-temperature combustion catalyst. A process and apparatus is set forth for the application of the catalyst for after-burning of exhaust gases from diesel engines, with catalyst filler layers eccentrically disposed with respect to each other for the adsorption of soot particles, and with a catalyst honeycomb for after-burning and nitric oxide-reduction. The after-burning device is suitable also as a muffler.
REFERENCES:
patent: 4055513 (1977-10-01), Wheelock
patent: 4515758 (1985-05-01), Domesle et al.
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