Medium/low temperature mesoporous nitrogen oxide and dioxin removal catalyst and preparation method thereof

Abstract

The invention discloses a medium / low temperature mesoporous nitrogen oxide and dioxin removal catalyst and a preparation method thereof. According to the catalyst, a mesoporous carbon-silicon composite material is adopted as a carrier, and one or more of vanadium pentoxide, tungsten oxide, cerium oxide and manganese oxide are adopted as active components. The catalyst disclosed by the invention iscapable of effectively achieving synergetic removal of NOx and dioxin within a medium / low temperature range of 180-300 DEG C, and in addition, the catalyst disclosed by the invention has the advantages of being large in specific surface area, ordered in pore height, small in active metal particle size and uniform in active metal particle size distribution.

Description

technical field

[0001] The invention relates to a medium-low temperature mesoporous denitration and dedioxin catalyst and a preparation method thereof. Background technique

[0002] As a typical persistent organic pollutant, dioxin is difficult to degrade and eliminate naturally in the environment, and it is extremely carcinogenic. At present, the main sources of dioxins are chemical metallurgical industry, waste incineration, paper making and production of pesticides and other industries. At present, the activated carbon adsorption method has become the most widely used dioxin terminal control method due to its simple equipment structure and high removal efficiency. However, this method only realizes the transfer of dioxin pollution from the gas phase to the solid phase, but instead increases the burden of fly ash disposal, and even leads to an increase in the total amount of dioxin emissions, without realizing its real degradation.

[0003] The selective catalytic reduct...

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