Supported catalyst, monolithic selective catalytic reduction (SCR) catalyst, preparation method therefor, and method for nitrogen oxides removal
AssigneeBASF SE
InventorsLiang Chen, Feng Zhao, Jia Di Zhang, An Ju Shi, Shau-Lin Frank Chen, Miao Mark Chen
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Abstract
The present disclosure relates to a catalyst for NOx removal. In some embodiments, the catalyst comprises a support comprising at least one selected from the group consisting of TiO2, Al2O3, SiO2, ZrO2, CeO2, zeolite, TiO2 and WO3, and combinations thereof, and catalytically active components supported on the support. The catalytically active components comprise vanadium, antimony and at least one further component selected from the group consisting of silicon, aluminum and zirconium.
Claims29
A supported catalyst for reducing NOx in exhaust gas from an internal combustion engine, comprising:
- a support comprises at least one selected from the group consisting of TiO2, Al2O3, SiO2, ZrO2, CeO2, zeolite, TiO2 and WO3, and combinations thereof, and
- catalytically active components supported on the support, which comprise vanadium, antimony and at least one further component selected from the group consisting of silicon, aluminum and zirconium, wherein the at least one further component is enriched on a surface or at a vicinity of the surface of the support, and wherein, based on the total weight of the support and the catalytically active components, the at least one further component is contained in amount of 0.5% to 20% by weight, calculated as SiO2, Al2O3 or ZrO2, respectively.
Dependencies are inferred from the claim text.