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Characterization of Acid-base Property of ZrO2 by Thermal Desorption: 1. TPD Studies of Acid and Base Probes
Xu Boqing1; Tsutomu, Yamaguchi2; Koze, Tanabe2; Liang Juan3; Zheng Lubin3
关键词Zirconium Dioxide Acid-base Property Acid And Base Probes Tpd Ir
刊名ACTA PHYSICO-CHIMICA SINICA
1994
DOI10.3866/PKU.WHXB19940204
10期:2页:107-113
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
英文摘要Acid-base properties of ZrO2 pretreated at 873 K have been studied in relation to a typical acidic SiO2-Al2O3 and a typical basic MgO catalysts by examining the TPD behavior of NH3,CO2, pyridine, Et3N, and phenol. The weakly acidic property of ZrO2 is evidenced by a much lower desorption temperature of NH3 in comparison with that of SiO2-Al2O3, and its weakly basic property by a much lower desorption temperature of CO2 in comparison with that of MgO. NH3,pyridine and Et3N show similar TPD profiles though decomposition to CH3CN occurs in the TPD process of Et3N. It is shown by the IR of adsorbed NH3 that the acid sites on ZrO2 are Lewis acidic in nature, and some of them c. become more acidic in strength at elevated temperatures, Three TPD peaks on the TPD profiles of NH3 and CO2 are observed,respectively.The temperature range of NH3-peaks is very close to that of CO2-peaks. It is concluded from these observations that the strength of the acid and base sites on ZrO2 are well matched, and that ZrO2 is a typical acid base bifunctional catalyst. A discussion on the relation between the adsorbed surface species and the desorption of NH3 and CO2 is given based on the IR results of adsorbed NH3 and CO2, respectively.
语种英语
WOS记录号WOS:000207588900004
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被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/139413
专题中国科学院大连化学物理研究所
作者单位1.Dalian Univ Technol, Sch Chem Engn, Dept Chem, Dalian 116012, Peoples R China
2.Hokkaido Univ, Fac Sci, Dept Chem, Sapporo, Hokkaido 060, Japan
3.Acad Sinica, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
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Xu Boqing,Tsutomu, Yamaguchi,Koze, Tanabe,et al. Characterization of Acid-base Property of ZrO2 by Thermal Desorption: 1. TPD Studies of Acid and Base Probes[J]. ACTA PHYSICO-CHIMICA SINICA,1994,10(2):107-113.
APA Xu Boqing,Tsutomu, Yamaguchi,Koze, Tanabe,Liang Juan,&Zheng Lubin.(1994).Characterization of Acid-base Property of ZrO2 by Thermal Desorption: 1. TPD Studies of Acid and Base Probes.ACTA PHYSICO-CHIMICA SINICA,10(2),107-113.
MLA Xu Boqing,et al."Characterization of Acid-base Property of ZrO2 by Thermal Desorption: 1. TPD Studies of Acid and Base Probes".ACTA PHYSICO-CHIMICA SINICA 10.2(1994):107-113.
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