Sulfur-tolerant catalyst for removing co and vocs and preparation method of sulfur-tolerant catalyst

Abstract

The invention discloses a sulfur-tolerant catalyst for removing co and vocs and a preparation method of the sulfur-tolerant catalyst. The sulfur-tolerant catalyst comprises a carrier, a coating, Pt, Pd, Ir, auxiliaries, Co, Mo and S. The method comprises the following steps of: dissolving cobalt salt, molybdenum salt and ammonium sulfide under an acidic condition, adding activated carbon into a dissolving solution for dipping, then performing aging, adding hydrazine hydrate for reflux, performing cooling, filtering, washing and drying in vacuum; soaking a carrier in a coating mixed solution, performing purging, drying, calcining, and soaking the carrier in a mixed solution of a chloroplatinic acid solution, a chloropalladic acid solution, a chloroiridic acid solution and a nitrate solution for more than 6 hours by adopting an equivalent-volume impregnation method; finally, adding a reducing agent at 40-80 DEG C, taking out the carrier, washing and drying the carrier so as to obtain a target product, putting the target product and a Co-Mo-S catalyst into a porous container together. The catalyst reduces the activation energy of organic matter, enables the oxidation temperature of the organic matter to be reduced to 300 DEG C to be subjected to oxygenolysis, and is good in sulfur-resistant effect and good in poison resistance to other harmful substances.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and in particular relates to a sulfur-resistant catalyst for removing CO and VOCs and a preparation method thereof. Background technique [0002] CO is a poisonous gas. When CO in the air reaches a certain concentration at room temperature, it will cause adverse reactions in people, including dizziness and vomiting. When the concentration of CO in the environment is further increased, because the binding capacity of CO and human hemoglobin is much greater than that of O2, This may lead to human death, and although most of the VOCS (volatile organic compounds) produced in the industrial production process volatilize in the natural environment, the remaining VOCS will have a long-term impact on the human body. [0003] At present, the CO produced in the environment is mainly eliminated by catalytic oxidation, and the catalysts used are non-precious metal catalysts and noble metal ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a sulfur-resistant catalyst for removing CO and VOCs and its preparation method, so as to solve the problems of poor sulfur-resistant effect and large energy consumption of existing catalysts