文献类型：期刊文献

英文题名：Rare earth modified kaolin-based Cr2O3 catalysts for catalytic combustion of chlorobenzene

作者：Ye, Na[1];Li, Yan[2];Yang, Zhen[1];Zheng, Jie[1];Zuo, Shufeng[1]

机构：[1]Shaoxing Univ, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Zhejiang, Peoples R China;[2]Shandong Agr Univ, Coll Chem & Mat Sci, Tai An 271018, Shandong, Peoples R China

年份：2019

卷号：579

起止页码：44

外文期刊名：APPLIED CATALYSIS A-GENERAL

收录：SCI-EXPANDED(收录号：WOS:000470954100005)、、WOS

基金：This paper was supported by the National Natural Science Foundation of China (Grant No.21577094) and Zhejiang Public Welfare Technology Research Project (Grant No. LGG19B070003) and the Foundation of Science and Technology of the Shaoxing City (No. 2018C10019). The authors would like to acknowledge the financial support from Innovation Team of Huzhou South Taihu Elite Program. Moreover, we would also grateful to Zhejiang Da-Feng Automobile Technology Co., Ltd. for the related experiment and test.

语种：英文

外文关键词：Kaolin; Rare earth; Cr-Nd; Chlorobenzene; Catalytic combustion

外文摘要：In this paper, a kaolin-based NaY-type zeolite crystal (KL-NY) material with large specific surface area and pore volume was prepared through in-situ crystallization, and then used as support to synthesize a series of rare earth elements (REE) modified Cr2O3 catalysts. The catalysts were systematically characterized and analyzed by XRD, N-2 adsorption, HRTEM-EDS-MAPPING, XPS, TPO, H-2-TPR, TPD and TPSR techniques. The structure-performance relationship of texture-structure of the catalysts, thermal stability and dispersion of active metals, and the performance for catalytic combustion of chlorobenzene (CB) were established. The results showed that there existed interaction between REE and Cr2O3, which induced the production of a certain amount of Cr6+ species on the catalyst surface that could enhance the catalytic performance of the catalysts. Among them, 10% CrNd (6:1)/KL-NY exhibited the highest catalytic activity and completely degrade CB at about 280 degrees C. Furthermore, 10%CrNd(6:1)/KL-NY represented high durability and good water-resistance for CB combustion during the long-term continuous test, indicating this catalyst deserved more attention and had great potential in industrial applications.