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题名: A microcalorimetric device for measurement of differential heat of adsorption on surface of solid catalysts
作者: Li, L;  Wang, XD;  Shen, JY;  Zhou, LX;  Zhang, T
关键词: hydrogen ;  gas/solid adsorption system ;  differential heat of adsorption ;  microcalorimeter ;  error analysis
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2003-11-01
卷: 24, 期:11, 页:872-876
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: A microcalorimetric device for the measurement of differential heat of adsorption on the surface of solid catalysts is described. In the device, a Setaram heat flow microcalorimeter is used to measure the heat evolved from the sample. At the same time, an MKS Baratron capacitance manometer connected to a high vacuum system is employed to measure the amount of gas adsorbed on the sample. Besides, a special all-metal vessel for the measurement of differential heat of adsorption on highly active catalysts, which can be operated under the conditions of high vacuum and wide temperature range, was designed and constructed. The microcalorimeter was calibrated with standard materials. The measurement of differential heat of adsorption such as H-2 on Pt/SiO2 and gamma-Mo2N was carried out. The Pt/SiO2 sample was prepared by impregnation of silica with acetic solution of H2PtCl6.6H(2)O and the gamma-Mo2N sample was prepared by temperature-programmed reductive nitriding of highly pure MoO3 in a flow of pure NH3. The experimental results for the adsorption heat are in good agreement with those published in the literature. The error analysis of the experimental data shows that the relative errors for the measurement of adsorption heat are within 4%.
关键词[WOS]: MOLYBDENUM NITRIDE ;  SUPPORTED PLATINUM ;  H-2 ;  CO
语种: 英语
WOS记录号: WOS:000187322500016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138238
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Nanjing Univ, Dept Chem, Nanjing 210093, Peoples R China

Recommended Citation:
Li, L,Wang, XD,Shen, JY,et al. A microcalorimetric device for measurement of differential heat of adsorption on surface of solid catalysts[J]. CHINESE JOURNAL OF CATALYSIS,2003,24(11):872-876.
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