Tianjin Research Institute for Water Transport Engineering, M.o.t.

Zhonghua Tian

Bin Liu

Yanjie Wei

Wei Ye

Zhipeng Zhang

Yingjie Zhao

Shaoping Cui

Shipei Dong

Yidan Huang

Boqun Liu

Fang Lin

Junjie Zhao

Siqi Chen

Mingyu Guo

The present invention relates to the technical field of catalyst preparation, disclosing a preparation method and application of a coated vanadium-tungsten-titanium oxide monolithic SCR catalyst. The method includes the steps of mixing a vanadium oxide precursor, a tungsten oxide precursor, titanium dioxide, an inorganic adhesive, an organic adhesive and a macromolecular surfactant with deionized water and stirring them to obtain a thick liquid; adding a pH adjuster to the thick liquid to make its pH 1.5-4.5; impregnating a cordierite honeycomb carrier in the thick liquid to obtain a preliminarily-impregnated catalyst and dried and calcined the preliminarily-impregnated catalyst to obtain a finished catalyst. The method has advantages such as simple operation, easy repetition and short time-consuming, so it can be applied to exhaust gas post-treatment of a marine diesel engine, and provide a good choice for catalysts used to denitrify medium and high temperature exhausted gas from marine engines.

Preparation method and application of coated vanadium-tungsten-titanium oxide monolithic SCR catalyst

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Tianjin, China

Zhonghua Tian