Low-temperature water-resistant and sulfur-resistant denitration catalyst as well as preparation method and application thereof
A denitration catalyst and low temperature technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problems of low temperature sulfur poisoning, water poisoning inactivation, etc., to reduce the reduction of specific surface area and improve the denitration efficiency. , The effect of solving the sharp decline of low temperature poisoning activity
Inactive Publication Date: 2017-12-26
FUDAN UNIV
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The invention belongs to the technical field of atmospheric pollution control, in particular to a low-temperature water-resistant and sulfur-resistant denitration catalyst as well as a preparation method and application thereof. The denitration catalyst provided by the invention uses titanium dioxide as a carrier, uses one or several kinds of materials from vanadium oxide, vanadium phosphorus oxide and cerium oxide as active ingredients, uses one or several kinds of materials from molybdenum oxide, tungsten oxide, nickel oxide and zirconium oxide as auxiliary agents, and uses oxalic acid as cosolvents and dispersing agents. The catalyst can effectively reduce the catalyst specific area reduction in the roasting process; the denitration efficiency is obviously improved; in addition, the problem of sharp reduction of poisoning activity of the conventional vanadium-based catalyst at the lower temperature due to the existence of water and sulfur is solved. The denitration catalyst provided by the invention has the advantages that the denitration efficiency is stabilized at 93 percent or higher under the conditions of the temperature being 150 to 300 DEG C and the air speed being 5000 to 150000 h<-1>; the N2 selectivity is higher than 95 percent; the high water-resistant and sulfur-resistant capability is realized; the catalyst is particularly applicable to the oxynitride discharge control of smoke gas of glass, steel and iron, coking coke ovens and the like.
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Property | Measurement | Unit |
Specific surface area | 120.0 | m²/g |
Specific surface area | 145.0 | m²/g |
Specific surface area | 105.0 | m²/g |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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