B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 21/06 (2006.01) B01D 53/94 (2006.01) B01J 23/652 (2006.01) B01J 27/053 (2006.01) B01J 29/89 (2006.01) B01J 37/02 (2006.01)
Patent
CA 2447665
This invention provides a new catalyst for purification of diesel engine exhaust gas comprising a carrier of at least one sulfur-resistant refractory oxide and at least one catalytic metal, wherein at least one solid acid and/or sulfuric acid is carried on the carrier by adding at least one precursor of said solid acid and/or sulfuric acid during the preparation of the carrier, and preparation thereof. The catalyst of this invention is thermally and chemically durable and can effectively remove particulate matters, hydrocarbons and nitrogen oxides contained in the diesel engine exhaust gas at low temperatures.
Cette invention porte sur un nouveau catalyseur servant à purifier les gaz d'échappement de moteurs diesel et comprenant un support catalytique à base d'au moins un oxyde réfractaire résistant au soufre et d'au moins un métal catalyseur. Au moins un acide solide et/ou un acide sulfurique est porté sur le support catalytique au moyen de l'ajout d'au moins un précurseur de l'acide solide et/ou de l'acide sulfurique au cours de la préparation du support catalytique. Le catalyseur de la présente invention est thermiquement et chimiquement durable et peut retirer de manière efficace des particules, des hydrocarbures et des oxydes d'azote contenus dans les gaz d'échappement de moteurs diesel à basses températures.
Kh Chemicals Co. Ltd.
Kirby Eades Gale Baker
LandOfFree
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