Catalytic removal of volatile organic compounds over the three-dimensionally ordered mesoporous or macroporous MO x (M = Co, Fe, Mn, Cr) catalysts - 文章详情页

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Catalytic　combustion　is　a　good　way　for　VOC　removal.　The　key　issue　is　the　availability　of　an　effective　catalyst.　MO　x　(M　=　Co,　Fe,　Mn,　Cr)　was　fabricated　with　a　three-dimensionally　(3D)　or　3D-ordered　macroporous　(3DOM)　structure　using　nitrate　of　Co,　Fe,　Mn,　or　Cr　as　metal　source.　These　materials　exhibited　excellent　catalytic　activities　for　the　combustion　of　formaldehyde,　acetone,　methanol,　and　toluene.　KIT-6-　and　SBA-16-templating　derived　samples　possessed　ordered　mesoporous　architectures　with　crystalline　walls.　The　formation　of　nanovoids　within　the　walls　of　the　3DOM-structured　Fe　2O　3-2　sample　was　observed.　Compared　to　the　corresponding　bulk　metal　oxides,　the　macro-　or　mesoporous　counterparts　showed　higher　surface　oxygen　species　amount　and　were　more　reducible　at　low　temperatures.　The　porous　materials　displayed　much　better　catalytic　activities　than　the　bulk　counterparts　in　VOC　combustion.　The　unusual　catalytic　performance　of　the　porous　transition-metal　oxides　was　related　to　their　better　low-temperature　reducibility,　3D-ordered　mesoporous,　or　3DOM　architecture,　higher　surface　oxygen　species　concentration,　and　larger　surface　area.　This　is　an　abstract　of　a　paper　presented　at　the　2011　AIChE　Annual　Meeting　(Minneapolis,　MN　10/16-21/2011).

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[ 1 ] [Dai, H.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Xia, Y.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Zhang, R.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Zhang, L.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Deng, J.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Liu, Y.]School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
[ 7 ] [Wang, K.]School of Resource and Safety Engineering, China University of Mining and Technology Beijing, Beijing 100083, China
[ 8 ] [He, H.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 9 ] [Li, J.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

[Dai, H.]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China

电子邮件地址：

hxdai@bjut.edu.cn

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