文献类型：期刊文献

英文题名：Adsorption/catalytic combustion of toxic 1,2-dichloroethane on multifunctional Nb2O5-TiO2 composite metal oxides

作者：Yang, Peng[1];Li, Jing[2];Bao, Linfa[3];Zhou, Xiang[1];Zhang, Xiuwen[1];Fan, Shaokang[1];Chen, Zhenyang[1];Zuo, Shufeng[1];Qi, Chenze[1]

机构：[1]Shaoxing Univ, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Peoples R China;[2]Liaocheng Univ, Shandong Prov Key Lab Chem Energy Storage & Novel, Coll Chem & Chem Engn, Liaocheng 252059, Peoples R China;[3]Shaoxing Univ, Sch Life Sci, Shaoxing 312000, Peoples R China

年份：2019

卷号：361

起止页码：1400

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：SCI-EXPANDED(收录号：WOS:000457096400137)、、WOS

基金：We gratefully acknowledge the financial supports for this research work provided by the Natural Science Foundation of Zhejiang Province (No. LQ19B030004 and LGG19B070003), the open-end fund of the Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, the Scientific Research Program of Shaoxing University (No. 20165008 and 2016LG1005, controlled synthesis of mixed oxide materials for catalytic degradation of industrial organic pollutants) and the National Natural Science Foundation of China (No. 21577094).

语种：英文

外文关键词：Catalytic combustion; Chlorinated VOCs; Binary metal oxides; Nb2O5-TiO2; Multifunctional catalyst

外文摘要：The Nb2O5-TiO2 catalyst system was synthesized via sol-gel method and investigated for adsorption/catalytic combustion of toxic 1,2-dichloroethane (DCE), which was usually recognized as a representative of various chlorinated and brominated VOCs pollutants. The research results of structure-performance relationship revealed that binary Nb2O5-TiO2 were amorphous and mesoporous materials with pore diameter mainly in the range of 2-10 nm, and Nb and Ti elements were uniformly dispersed. The interaction between Nb2O5 and TiO2 coupled with the molar ratio of Nb/Ti improved the physicochemical properties of Nb2O5-TiO2. Moreover, Nb2O5-TiO2 exhibited higher catalytic activity for DCE combustion than single Nb2O5 or TiO2. Especially, the 2Nb(1)Ti catalyst (Nb/Ti = 2: 1, molar ratio) displayed the highest activity, over which 90% conversion of DCE could be achieved at 295 degrees C. These results were related to that the interaction effect between Nb2O5 and TiO2 improved acidity and oxidizing properties, and the materials had large surface area, all of which were favorable for adsorbing DCE at relatively low temperatures (below 93 degrees C) on Nb2O5-TiO2 and then improving catalytic combustion performance at lower reaction temperatures than Nb2O5 or TiO2. Besides, during the long-term continuous reaction, even though partial deactivation was observed for this catalyst, it could be suppressed at elevated temperature.