V2O5/（TiO2-SiO2）脱硝催化剂新型制备工艺及性能研究

doi:10.19964/j.issn.1006-4990.2021-0191

Abstract

Abstract:

The series V₂O₅/（TiO₂-SiO₂） SCR catalysts were prepared by dripping-glue-coating process that dripped the col-loidal solution into the parallel 7-channel of the self-made honeycomb support.The solution was formed by mixing ammonium vanadate（NH₄VO₃） and HPMC with high-speed stirring.The prepared denitrification catalyst was characterized by XRD、BET、H₂-TPR and catalyst evaluation experiment.The influence of the distribution of V₂O₅ on support and V₂O₅ content on the SCR catalyst performance were investigated.The activity of denitration catalyst was also studied in several aspects: reaction temper-ature,reaction space velocity,n（NH₃）/n（NO） molar ratio,etc.The results showed the content of the V₂O₅ of 1.2%,the space velocity of 10 000 h^-1,the NH₃/NO molar ratio of 1.2,the temperature of 320 ℃,the de-NO_x efficiency of the catalyst was as high as 93.0%.Compared with the industrial SCR catalyst,the V₂O₅/（TiO₂-SiO₂） SCR catalyst has higher activity,lower con-sumption of vanadium,lower production cost,and less environmental pollution.

Key words: denitration catalyst, vanadium pentoxide, titanium dioxide

CLC Number:

TQ426.6

SUN Chunhui,CHEN Yongsheng,LIU Wei,XU Yan,ZHANG Jingcheng,YU Ruixiang. Study on new preparation process and performance of V₂O₅ /（TiO₂-SiO₂） denitrification catalyst[J]. Inorganic Chemicals Industry, 2021, 53(12): 146-149.

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References 15

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V₂O₅ 涂覆量/%	比表面积/ （m²·g^-1）	V₂O₅ 涂覆量/%	比表面积/ （m²·g^-1）
0.0	135.51	1.2	119.57
0.5	132.46	1.6	89.36
0.8	124.32

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Inorganic Acid-Base-Salt Committee of CIESC

Study on new preparation process and performance of V₂O₅ /（TiO₂-SiO₂） denitrification catalyst

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Study on new preparation process and performance of V2O5 /（TiO2-SiO2） denitrification catalyst