中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 大连化学物理研究所
  3. 中国科学院大连化学物理研究所
Effect of V-containing precursors on the structure and catalytic performance of Cs-substituted phosphomolybdates for isobutane oxidation

文献类型：期刊论文

作者Chu, Wenling1; He, Jingfang1,2; Liu, Yanchun1; Yang, Weishen1
刊名APPLIED CATALYSIS A-GENERAL
出版日期2018-04-25
卷号556页码:104-112
关键词Isobutane Oxidation Methacrylic Acid V-containing Precursors Heteropolycompound
ISSN号0926-860X
DOI10.1016/j.apcata.2018.02.023
文献子类Article
英文摘要A series of vanadium-substituted Cs salt of heteropoly compounds (HPC) from different vanadium-containing precursors were synthesized to investigate the preferable vanadyl species for oxidation of isobutane to methacrylic acid (MAA) under oxygen-poor conditions. The effects of various precursors on the structure were explored by XRD, FT-IR, Raman, UV-vis diffuse reflectance, XPS, H-2-TPR, NH3-TPD and IR spectra of pyridine adsorption, and their structure-performance relationship was further studied. It was firstly found that the vanadium-containing precursors played a crucial role in the structure (location of vanadyl species), surface acidity and redox properties (ratio of surface V4+/V5+ and Mos(5+)/Mo6+ redox couples) for series of as-prepared HPCs catalysts. The catalyst derived from vanadyl sulfate led to vanadyl species into the secondary structure of Keggintype HPC, which exhibited suitable surface V4+/V5+ and Mo5+/Mo6+ ratio and higher surface acidity, thereby improving the catalytic activity and selectivity to MAA for selective oxidation of isobutane under oxygen-poor conditions. These understandings would be beneficial for further study of HPCs and developing of highly efficient catalysts for isobutane oxidation.
WOS关键词KEGGIN-TYPE HETEROPOLYACIDS ; SELECTIVE OXIDATION ; METHACRYLIC-ACID ; MOLYBDOVANADOPHOSPHORIC ACIDS ; ISOBUTYRIC ACID ; OXIDE CATALYSTS ; VANADIUM ; CESIUM ; SALTS ; DEHYDROGENATION
WOS研究方向Chemistry ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000430780000011
出版者ELSEVIER SCIENCE BV
源URL[http://cas-ir.dicp.ac.cn/handle/321008/167172]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Chu, Wenling; Yang, Weishen
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Chu, Wenling,He, Jingfang,Liu, Yanchun,et al. Effect of V-containing precursors on the structure and catalytic performance of Cs-substituted phosphomolybdates for isobutane oxidation[J]. APPLIED CATALYSIS A-GENERAL,2018,556:104-112.
APA Chu, Wenling,He, Jingfang,Liu, Yanchun,&Yang, Weishen.(2018).Effect of V-containing precursors on the structure and catalytic performance of Cs-substituted phosphomolybdates for isobutane oxidation.APPLIED CATALYSIS A-GENERAL,556,104-112.
MLA Chu, Wenling,et al."Effect of V-containing precursors on the structure and catalytic performance of Cs-substituted phosphomolybdates for isobutane oxidation".APPLIED CATALYSIS A-GENERAL 556(2018):104-112.

入库方式： OAI收割

来源：大连化学物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。