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Low-temperature Catalytic Reduction of Nitrogen Monoxide with Carbon Monoxide on Copper Iron and Copper Cobalt Composite Oxides
Jun-sheng Shu1, Wen-shui Xia*1, You-jin Zhang2, Tao Cheng2, Min-rui Gao2
1.School of Food Science and Technology, Southern Yantze University, Wuxi 214122, China;2.Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
Abstract:
Copper iron composite oxides (CuO/Fe2O3) and copper cobalt composite oxides (CuO/Co3O4) for the catalytic reduction of NO with CO at low temperature were prepared by co-precipitation. The catalytic activity and thermal stability of the catalysts were evaluated by a microreactor-GC system. The 100% conversion temperatures of NO are 80 oC for CuO/Fe2O3 and 90 oC for CuO/Co3O4. The catalysts possess high catalytic activity and favorable thermal stability for NO reduction with CO in a wide temperature range and long time range. A systematic study of the molar ratios of the reactants, the volume of NaOH, aging time, and calcination temperature/time was carried out to investigate the influence preparation conditions on the catalytic activity of the catalysts.
Key words:  CuO/Fe2O3, CuO/Co3O4, NO reduction, Catalytic activity, Thermal stability
FundProject:
Low-temperature Catalytic Reduction of Nitrogen Monoxide with Carbon Monoxide on Copper Iron and Copper Cobalt Composite Oxides
舒俊生1, 夏文水*1, 张悠金2, 成涛2, 高敏锐1,2
1.江南大学食品科学技术学院,无锡 214122;2.中国科学技术大学化学系,合肥 230026
摘要:
通过共沉淀法, 在低温下制备了铜铁复合氧化物CuO/Fe2O3和铜钴复合氧化物CuO/Co3O4.利用GC微反应器评价了这些复合氧化物的催化活性和热稳定性,结果表明, CuO/Fe2O3和CuO/Co3O4的NO100%转化温度分别为80和90 ℃,该催化活性和热稳定性在较宽的温度和较长的时间范围内都能得以保持.此外,还系统研究了试剂的摩尔比率、NaOH的体积、陈化时间、煅烧温度和煅烧时间对该复合氧化物催化活性的影响.
关键词:  CuO/Fe2O3,CuO/Co3O4,NO还原,催化活性,热稳定性
DOI:10.1088/1674-0068/21/04/393-400
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