Thermal Inactivation of MnO x /TiO 2 DENO x Catalytic Material for Low Temperature Selective Catalytic Reduction [MnO x /TiO 2 低温SCR脱硝催化材料热失活原因研究] - 文章详情页

作者：

Wan, Y.-Q. (Wan, Y.-Q..) | Cui, S.-P. (Cui, S.-P..) (学者：崔素萍) | Guo, H.-X. (Guo, H.-X..) (学者：郭红霞) | Ma, X.-Y. (Ma, X.-Y..) | Zhang, Y.-Z. (Zhang, Y.-Z..) (学者：张永哲)

收录：

Scopus PKU CSCD

摘要：

This　paper　focused　on　the　problem　of　inactivation　of　MnO　x　/TiO　2　SCR　DENO　x　catalytic　materials.　To　investigate　the　difference　of　physical　and　chemical　properties　of　SCR　denitrification　catalyst　before　and　after　use,　XRD,　BET,　H　2　-TPR,　NH　3　-TPD,　XPS　were　employed.　The　catalytic　activity　of　catalysts　was　studied　on　the　SCR　activity　reactor.　Results　showed　that　the　denitrification　efficiency　of　the　catalytic　material　decreased　from　98%　to　50%　after　100　h　at　200　℃.　The　decrease　in　catalytic　activity　was　the　result　of　a　combination　of　multiple　factors.　It　was　mainly　because　that　the　decreased　of　the　specific　surface　area,　with　the　increasing　of　crystallinity,　the　acid　sites　decreased　sharply　and　the　catalytic　materials　cannot　adsorb　enough　NH　3　.　While　the　content　of　Mn　3+　in　the　active　component　decreased　and　the　proportion　of　lattice　oxygen　increased,　also　promoted　the　deactivation　of　the　catalytic　material.　©　2018,　Chinese　Ceramic　Society.　All　right　reserved.

关键词：

Acid site; Deactivation of catalytic material; Low temperature selective catalytic reduction; MnO x /TiO 2 catalytic material

作者机构：

[ 1 ] [Wan, Y.-Q.]College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
[ 2 ] [Cui, S.-P.]College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
[ 3 ] [Guo, H.-X.]College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
[ 4 ] [Ma, X.-Y.]College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
[ 5 ] [Zhang, Y.-Z.]College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China

通讯作者信息：

崔素萍
[Cui, S.-P.]College of Materials Science and Engineering, Beijing University of TechnologyChina

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