Molecular sieve-based catalyst used for dechloridation of methane chloride

Abstract

The invention relates to a molecular sieve-based catalyst used for dechlorination of methane chloride. The molecular sieve-based catalyst is characterized by comprising a micropore molecular sieve carrier and an oxide of a transitional metal element; the molecular sieve-based catalyst is prepared through the following method: impregnating 1 g of dried micropore molecular sieve into a 50 ml nitrate ethyl alcohol solution, wherein the load quantity of the transitional metal accounts for 5 wt%; stirring at the room temperature, using a rotary evaporimeter for distillation until dried, then drying at the temperature of 80 to 120 DEG C for 8 to 12 hours, and roasting at the temperature of 500 to 600 DEG C for 4 to 8 hours inside a muffle furnace. The catalyst for dechlorination, provided by the invention, adopts an impregnation method to prepare a transitional metal loading type ZSM-5 catalyst. Through synergistic effect of the transitional metal and the molecular sieve, the dechlorination capability of a chlorine contained volatile organic compound is improved. The catalyst provided by the invention is used for removing chlorine in methane chloride.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a catalyst preparation method for improving the dechlorination performance of monochloromethane. Background technique [0002] Organochlorine compounds are important compounds widely used in various chemical raw materials and reagents. Some of these compounds are not only highly toxic, but also difficult to degrade, posing a threat to both the environment and humans. Chlorine-containing volatile organic compounds (CVOCs) are an important class of volatile organic compounds (VOCs). It is mainly divided into two categories: small molecule organic chlorides and high polymer chlorides. Chloromethane is a small molecular chloride and is mainly used in the production of methylchlorosilane, polysilicone, methylcellulose, and tetramethyllead. A small amount is used in the production of quaternary ammonium compounds and pesticides. It is a colorless, toxic and fl...

AI Technical Summary

Problems solved by technology

[0005] Most of the above dechlorination agents use oxides or alkali metals as active components, the dechlorination efficiency is low, the components are single, and the specific surface area of ​​the carrier is low

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