A process for the preparation of a vanadium-based scr catalyst

By using low-temperature decomposition and volatilization of surfactants and hydrogen reduction processes in the preparation of vanadium-based SCR catalysts instead of high-temperature calcination, the problems of high energy consumption and cracking of ceramic supports were solved, achieving low-energy production and high-efficiency catalyst preparation.

CN122124774APending Publication Date: 2026-06-02FOSHAN LIPAI MOTORCYCLE MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FOSHAN LIPAI MOTORCYCLE MATERIAL CO LTD
Filing Date
2026-03-23
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

The existing vanadium-based SCR catalyst preparation process involves high energy consumption and high cost due to high-temperature calcination, and the ceramic support is prone to cracking due to rapid cooling, which affects product quality.

Method used

A vanadium-based SCR catalyst was prepared by replacing the high-temperature decomposition of volatile surfactants with low-temperature decomposition volatile surfactants, replacing the carbon powder reduction process with a low-energy hydrogen reduction process, and replacing high-temperature calcination with low-temperature drying.

Benefits of technology

It effectively reduces the energy consumption in the production of vanadium-based SCR catalysts, avoids cracking of ceramic supports, reduces production costs, and improves product consistency and activity controllability.

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Abstract

This invention relates to the field of catalyst preparation technology, and particularly to a preparation process for a vanadium-based SCR catalyst. The preparation process for a vanadium-based SCR catalyst includes the following steps: Step S1: Take deionized water, add glacial acetic acid under stirring to adjust the pH, stir evenly, then add ammonium metatungstate to obtain an ammonium metatungstate solution. Impregnate the ammonium metatungstate solution in a mixture of titanium dioxide and cerium oxide, dry, and then calcine to obtain a sample. This vanadium-based SCR catalyst preparation process replaces high-temperature decomposition and volatilization surfactants with low-temperature decomposition and volatilization surfactants, and replaces the high-energy-consumption carbon powder reduction process with a low-energy-consumption hydrogen reduction process. This effectively reduces energy consumption during the preparation of the vanadium-based SCR catalyst, avoids cracking of the ceramic support, reduces the production cost of the catalyst, and solves the technical problems of existing vanadium-based SCR catalysts requiring high-temperature calcination, high energy consumption, high cost, long cooling time, and rapid cooling easily leading to cracking of the ceramic support during production.
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