RU93004633A - CATALYST FOR OXIDATIVE CLEANING OF DIESEL ENGINE EXHAUST GASES - Google Patents

CATALYST FOR OXIDATIVE CLEANING OF DIESEL ENGINE EXHAUST GASES

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Publication number
RU93004633A
RU93004633A RU93004633/04A RU93004633A RU93004633A RU 93004633 A RU93004633 A RU 93004633A RU 93004633/04 A RU93004633/04 A RU 93004633/04A RU 93004633 A RU93004633 A RU 93004633A RU 93004633 A RU93004633 A RU 93004633A
Authority
RU
Russia
Prior art keywords
oxide
oxidative
catalyst
metal
exhaust gases
Prior art date
Application number
RU93004633/04A
Other languages
Russian (ru)
Inventor
Лейрер Юрген
Локс Эгберт
Энглер Бернд
Домесле Райнер
Lejrer Jurgen
Loks Ehgbert
Ehngler Bernd
Domesle Rajner
Original Assignee
Дегусса Аг
Degussa Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Дегусса Аг, Degussa Ag filed Critical Дегусса Аг
Publication of RU93004633A publication Critical patent/RU93004633A/en

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Claims (1)

Предметом изобретения является катализатор для окислительной очистки выхлопных газов дизельных двигателей с высокой конверсионной производительностью для углеводородов и окисей углерода и пониженным окислительным действием по отношению к оксидам азота и диоксиду серы, содержащий монолитный каркас катализатора со сквозными каналами из керамики или металла, который покрыт активирующим дисперсионным слоем из тонкоизмельченных окислов металла : оксида алюминия, оксида титана, оксида кремния, цеолита или их смесей в качестве носителя для каталитически активных компонентов, причем активными компонентами являются платина, палладий, родий и/или иридий легированные ванадием или находящиеся в смеси с окислительным соединением ванадия. Уменьшение окислительного действия по отношению к двуокиси серы достигается благодаря тому, что оксидом металла в измельченном виде является модифицированный оксид алюминия, оксид титана, оксид кремния, цеолит или их смеси. Модификация поверхности состоит в нанесении на удельную поверхность оксидов металлов слоя из диоксида титана или диоксида кремния, содержащего от 1 до 5 монослоев.The subject of the invention is a catalyst for the oxidative purification of exhaust gases of diesel engines with high conversion performance for hydrocarbons and carbon oxides and a reduced oxidative effect on nitrogen oxides and sulfur dioxide, containing a monolithic catalyst framework with through channels of ceramic or metal that is coated with an activating dispersion layer from finely divided metal oxides: aluminum oxide, titanium oxide, silicon oxide, zeolite or their mixtures as a carrier For the catalytically active components, the active components are platinum, palladium, rhodium and / or iridium doped with vanadium or mixed with an oxidative compound of vanadium. The reduction of the oxidative action with respect to sulfur dioxide is achieved due to the fact that the metal oxide in a ground form is modified alumina, titanium oxide, silicon oxide, zeolite, or mixtures thereof. The surface modification consists of applying a layer of titanium dioxide or silicon dioxide containing from 1 to 5 monolayers to the specific surface of the metal oxide.
RU93004633/04A 1992-04-21 1993-04-20 CATALYST FOR OXIDATIVE CLEANING OF DIESEL ENGINE EXHAUST GASES RU93004633A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP4213018.2 1992-04-21

Publications (1)

Publication Number Publication Date
RU93004633A true RU93004633A (en) 1996-08-10

Family

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