Preparation method of catalyst for H2S selective catalytic oxidation

Abstract

The invention discloses a preparation method of a catalyst for H2S selective catalytic oxidation. The catalyst is prepared by the following steps: taking F217 as the template and 3-aminophenol and hexamethylene tetramine as the precursors, carrying out rapid carbonization in a nitrogen atmosphere, and finally performing KOH etching. The prepared catalyst has the advantages of large specific surface area and high N-doping amount. The prepared sample can be use as a catalyst applied to H2S selective catalytic oxidation. Compared with a common H2S selective catalyst, the prepared catalyst has a strong H2S selective catalytic performance.

Description

technical field [0001] The present invention relates to the preparation of a kind of N-doped porous nano-carbon material, in particular to a kind of H 2 Preparation of S selective oxidation catalyst and method of use thereof, this application can not only eliminate highly toxic H 2 S gas can also realize the recovery and utilization of sulfur element. Background technique [0002] h 2 As one of the main pollutants in the atmosphere, S is a highly irritating and highly toxic gas. Under aerobic and humid heat conditions, it will not only cause equipment and pipeline corrosion, catalyst poisoning, but also seriously threaten personal safety. With the development of the economy and the enhancement of people's awareness of environmental protection, the desulfurization of tail gas has attracted more and more attention. At the same time, the country has also formulated corresponding laws and regulations, and the H 2 S emissions are strictly limited. Hydrogen sulfide is a by-pr...

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Problems solved by technology

For example, activated carbon and molecular sieve materials have a large specific surface area and rich pores to speed up the mass transfer process and product sulfur desorption rate, but the material itself has few catalytic centers, and it needs to be loaded with active components or modified to have catalytic performance. Therefore, there are problems such as cumbersome preparation process and easy loss of active components in the reaction; metal oxides themselves have catalytic active sites, and their stability is relatively high, but their specific surface area is small, which limits their ability to react with H 2 The adsorption of S, and the active center is easily covered by sulfur in the reaction, which greatly reduces the performance of the catalyst.

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