Catalyst applied to pre-stage three-way catalytic converter

The invention provides a catalyst applied to a pre-stage three-way catalytic converter. The catalyst comprises a carrier and an active material, wherein the active material consists of precious metal and a catalyst promoter; the precious metal consists of palladium nitrate and rhodium nitrate, and t...

Full description

Saved in:
Bibliographic Details
Main Authors LANG KAIQIANG, WAN XIAOYAN, KOU CHAO, WANG FANGYI, FU WEIHUI, LEI PENGHUI, ZHENG LU, PAN JINJIN, ZHU SHENGBIN
Format Patent
LanguageEnglish
Published 25.02.2015
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR RELEVANT APPARATUS
TRANSPORTING
Online AccessGet full text

Cover

More Information
Summary:The invention provides a catalyst applied to a pre-stage three-way catalytic converter. The catalyst comprises a carrier and an active material, wherein the active material consists of precious metal and a catalyst promoter; the precious metal consists of palladium nitrate and rhodium nitrate, and the weight ratio of palladium nitrate to rhodium is 14 to 1; and the catalyst promoter consists of aluminum oxide, cerium-zirconium powder, pseudo-boehmite, deionized water and nitric acid. The catalyst applied to the pre-stage three-way catalytic converter has an excellent purification effect on purification of waste gas generated during cold start of an automobile.
Bibliography:Application Number: CN20141604291