作者：Li, JJ (Li, Jinjun); Lu, XF (Lu, Xiaofei); Wu, F (Wu, Feng); Qin, SL (Qin, Shaoli); You, ZX (You, Zhixiong)
来源出版物： CHEMICAL ENGINEERING JOURNAL 卷：328 页码:1058-1065 DOI：10.1016/j.cej.2017.07.128 出版年：NOV 15 2017
摘要：Structured catalysts and reactors have wide applications in environmental remediation and production of important energy-related chemicals. In thermal catalytic processes, external heater are often required to raise the temperature and ignite the reactions, which might lead to huge setups. Herein, we introduce a novel Joule-heatignition catalytic reactor. Using Fe-Cr-Al alloy as catalyst substrate, electric currents can pass directly through the substrate, generating Joule heat and bringing the catalysts to the target temperatures. Therefore, the setup can be simplified by omitting the additional heater; the heat produced inside the substrates can be transferred directly to the catalyst coat to achieve rapid ignition; and the reaction temperature can be flexibly controlled by adjusting the input power. In this work, we loaded manganese oxide catalyst onto an alloy wire and used it to build a Joule-heat-ignition reactor for the catalytic oxidation of carbon monoxide and toluene. The anodization pretreatment generated channels on the alloy surface, which effectively enhanced the catalyst loading. The use of alumina as a secondary support also favored catalyst loading and promoted catalyst dispersion. By adding proper amounts of zirconium, the mechanical stability of the catalyst layer increased. The Joule-heat-ignition catalytic system might provide some inspiration in related environmental catalysis.
作者关键词： Volatile organic compounds; Catalytic oxidation; Manganese oxide; Zirconia; Washcoat; Structured catalyst
扩展关键词：VOLATILE ORGANIC-COMPOUNDS; HONEYCOMB MONOLITHS; COMPLETE OXIDATION; COMBUSTION; ALUMINUM; BENZENE; MICROCHANNELS; ZIRCONIA; MN3O4; LAYER
通讯作者地址：Li, JJ; You, ZX (reprint author), Wuhan Univ, Sch Resources & Environm Sci, Hubei Key Lab Biomass Resources, Wuhan 430079, Hubei, Peoples R China.
地址：[Li, Jinjun; Lu, Xiaofei; Wu, Feng; Qin, Shaoli; You, Zhixiong] Wuhan Univ, Sch Resources & Environm Sci, Hubei Key Lab Biomass Resources, Wuhan 430079, Hubei, Peoples R China.
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