燃料化学学报2017，Vol.45Issue(11)：1401-1408,8.
溶胶凝胶法由细菌纤维素制备CuCe0.75Zr0.25Ox复合氧化物及其低温催化降解甲苯性能
Preparation of CuCe0. 75 Zr0. 25 Ox composite by bacterial cellulose promoted sol-gel method and its catalytic performance in the toluene degradation at low temperature
摘要
Abstract
Mesoporous CuCe0. 75 Zr0. 25 Ox composite was prepared by a simple sol-gel method with environmentally benign bacterial cellulose ( BC) as a pore former and characterized by TG/DTG, N2 adsorption-desorption, XRD, H2-TPR, O2-TPD and Raman; its catalytic activity in the degradation of toluene at low temperature was investigated in a fixed-reactor. The results indicated that BC with ultra fine three-dimensional networks and excellent compatibility is beneficial to the formation of gel with nitrate solution, to prepare the mesoporous catalyst. The catalyst performance of CuCe0. 75 Zr0. 25 Ox composite is significantly affected by the gel-form and gelling temperature during the preparation process. Over the ACCZ-70 catalyst prepared by alcohol gelling at 70℃, the temperature for a complete degradation of toluene ( T100 ) reaches 205℃, much lower than those reported in open literature; the excellent activity of ACCZ-70 is ascribed to its high reducibility at low temperature and high concentration of oxygen vacancies (0. 81). In addition, adsorption phenomenon was observed in the range of 120-140 ℃ during the toluene degradation over WCCZ catalysts prepared by water gelling.关键词
细菌纤维素/溶胶凝胶/复合氧化物催化剂/VOCsKey words
bacterial cellulose/sol-gel/multiple oxide catalysts/VOCs分类
化学工程引用本文复制引用
杨青,郝庆兰,闫宁娜,赵若竹,赵晨晨,张庆,豆宝娟,宾峰..溶胶凝胶法由细菌纤维素制备CuCe0.75Zr0.25Ox复合氧化物及其低温催化降解甲苯性能[J].燃料化学学报,2017,45(11):1401-1408,8.基金项目
The project was supported by the National Natural Science Foundation of China (21307088).国家自然科学基金青年科学基金(21307088)资助 （21307088）
