文献类型：期刊文献

英文题名：Controlled synthesis of bimetallic Nb-Fe composite oxides with high thermal stability for catalytic degradation of binary VOCs pollutants

作者：Liu, Jiang[1];Lin, Siyu[2];Shan, Bofang[3];Wang, Songlin[4];Zuo, Shufeng[1];Zhao, Junhu[1];Qi, Chenze[1];Yang, Peng[1]

机构：[1]Shaoxing Univ, Sch Chem & Chem Engn, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Peoples R China;[2]Ningbo Acad Prod & Food Qual Inspect, Ningbo Fiber Inspect Inst, Ningbo 315048, Peoples R China;[3]Zhejiang Hengfeng New Mat Co LTD, Shaoxing 312000, Peoples R China;[4]Henan Inst Sci & Technol, Sch Chem & Chem Engn, Xinxiang, Henan, Peoples R China

年份：2023

卷号：663

外文期刊名：APPLIED CATALYSIS A-GENERAL

收录：SCI-EXPANDED(收录号：WOS:001144285900001)、、EI(收录号：20232614324137)、Scopus(收录号：2-s2.0-85163179067)、WOS

基金：The authors gratefully acknowledge the financial support for this research paper provided by the National Natural Science Foundation of China (NSFC, No. 21906106) , the Zhejiang Provincial Natural Science Foundation (No. LQ19B030004) , the Leading Talents Training Program of Zhejiang Provincial University, the Science Technology Bureau of Shaoxing (No. 2023006057, Development of carbon dioxide based copolymer and degradable materials) , the Training Plan for University's Young Backbone Teachers of Henan Province (2021GGJS121) , and the Program for Science & Technology Innovation Talents in Universities of Henan Province (23HASTIT014).

语种：英文

外文关键词：FeNbO4; Thermal stability; Catalytic degradation; Mixture of toluene and chlorobenzene; Environmentally benign

外文摘要：A string of niobium-iron composite oxides with varying Nb/Fe ratios and calcination temperatures were produced and utilized to remove mixed contaminants (500 ppmv chlorobenzene and 500 ppmv toluene in air), and the structure/texture of catalytic materials were systematically characterized. The findings of the structure performance study revealed that the physicochemical qualities of Nb2O5-Fe2O3 were greatly enhanced than pure metal oxide. The presence of iron oxide hindered the crystallization of niobium oxide, which aided in the uniform dispersion of niobium-iron components into each other. Forming FeNbO4 at Nb/Fe molar ratio of 1/2 effectively improved the thermal stability of catalyst, withstood short-time thermal shock below 850 C-degrees. The formation of niobium-iron composite oxides improved the specific surface area, optimized the pore size distribution, increased surface acid centers, enhanced reduction/oxidation cycle, and promoted metal-metal interaction for the Nb-Fe-O catalysts. At 320 C-degrees, the catalytic degradation efficiency of 1Nb2Fe-500 could approach 90% for chlorobenzene and 85% for toluene, and it could sustain this efficiency for at least 80 h without evident deactivation, with a high CO(2 )selectivity of 86%. Furthermore, the Nb-Fe-O catalysts met the environmentally benign and low-cost requirements for environmental catalysis.