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Importance of porous structure and synergistic effect on the catalytic oxidation activities over hierarchical Mn-Ni composite oxides
Tang, Wenxiang1,2; Deng, Yuzhou1; Li, Wenhui1; Li, Jiaqi1; Liu, Gang1; Li, Shuangde1; Wu, Xiaofeng1; Chen, Yunfa1; Wu, XF
2016
发表期刊CATALYSIS SCIENCE & TECHNOLOGY
ISSN2044-4753
卷号6期号:6页码:1710-1718
摘要Hierarchically porous manganese-nickel composite oxides (MNCOs) were successfully synthesized by an oxalate route and further applied for catalytic removal of benzene. Among these catalysts, the best one was Mn2Ni1 mixed oxides which exhibited uniform hierarchical lithops-like topography, a rich porous structure and a high surface area of 201.1 m(2) g(-1). The temperature required for a benzene conversion of 90% over this catalyst was ca. 232 degrees C under the conditions of a benzene concentration of 1000 ppm in air and a high space velocity of 120000 mL g(-1) h(-1), which was 54 degrees C lower than that over the non-porous MNCO particles prepared by a traditional approach. The reaction kinetic study showed that the apparent activation energy (45.2 kJ mol(-1)) for the total oxidation of benzene over the Mn2Ni1 oxide catalyst was much lower than those (72.4-97.2 kJ mol(-1)) over other catalysts. With XPS and H-2-TPR analyses, the porous MNCOs have a higher content of surface-adsorbed oxygen species and better low-temperature reducibility which can be ascribed to a possible synergetic effect between Mn and Ni ions in the spinel mixed oxides.
关键词Volatile Organic-compounds Low-temperature Toluene Combustion Ethyl-acetate Air-quality Co Performance Reduction Removal Benzene
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1039/c5cy01119a
收录类别SCI
语种英语
关键词[WOS]VOLATILE ORGANIC-COMPOUNDS ; LOW-TEMPERATURE ; TOLUENE COMBUSTION ; ETHYL-ACETATE ; AIR-QUALITY ; CO ; PERFORMANCE ; REDUCTION ; REMOVAL ; BENZENE
WOS研究方向Chemistry
WOS类目Chemistry, Physical
项目资助者National Natural Science Foundation of China(51272253 ; 863 Hi-tech Research and Development Program of China(2013AA031801) ; Strategic Project of Science and Technology of Chinese Academy of Sciences(XDB05050000) ; 51002154 ; 21401200)
WOS记录号WOS:000372172800015
引用统计
被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/20639
专题研究所(批量导入)
通讯作者Wu, XF
作者单位1.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA
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Tang, Wenxiang,Deng, Yuzhou,Li, Wenhui,et al. Importance of porous structure and synergistic effect on the catalytic oxidation activities over hierarchical Mn-Ni composite oxides[J]. CATALYSIS SCIENCE & TECHNOLOGY,2016,6(6):1710-1718.
APA Tang, Wenxiang.,Deng, Yuzhou.,Li, Wenhui.,Li, Jiaqi.,Liu, Gang.,...&Wu, XF.(2016).Importance of porous structure and synergistic effect on the catalytic oxidation activities over hierarchical Mn-Ni composite oxides.CATALYSIS SCIENCE & TECHNOLOGY,6(6),1710-1718.
MLA Tang, Wenxiang,et al."Importance of porous structure and synergistic effect on the catalytic oxidation activities over hierarchical Mn-Ni composite oxides".CATALYSIS SCIENCE & TECHNOLOGY 6.6(2016):1710-1718.
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