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学科主题: 物理化学
题名: A microcalorimeter for measurement of differential heat of adsorption on surface of solid catalysts
作者: Li L(李林) ;  Wang XD(王晓东) ;  Zhang T(张涛) ;  Shen JY(沈俭一) ;  Zhou LX(周立幸) ;  Cheng RH(程瑞华)
会议名称: 3th International and 5th China-Japan Joint Symposium on Calorimetry and Thermal Analysis
会议日期: 2002-8-15
出版日期: 2002-08-15
会议地点: 中国
其他题名: 一种用于测量固体催化剂表面微分吸附热的微量吸附量热装置
通讯作者: 张涛
部门归属: 十五室
主办者: 兰州大学
摘要: In order to measure the surface thermodynamic properties of gas/solid systems and to study the interaction between gaseous adsorbate and catalysts, a microcalorimetric device for measurement of heat of adsorption on surface of solid catalysts has been set up. In this device, a Seteram microcalorimeter BT2.15 is used to measure the heat evolved from sample where an adsorption is taking place. At the same time, a MKS Baratron Capacitance Manometer connected with a high vacuum system is used to measure the amount of gas adsorbed on the sample. Besides, a special all-metal sample vessel, which can be operated under the conditions of high vacuum(up to 10-5pa) and the temperature range of 77-473K, was designed and constructed by ourselves. The preparation and pretreatment of sample as well as the seal of the treated sample into a glass capsule can be completed in the special sample vessel progressively. During experiment, Helium was served as heat transfer medium to improve the heat exchange among the whole calorimetric system. Once the equilibration between the sample vessel and its surroundings was extablished, the glass capsule could be broken by a special vacuum feedthrough and then, the sample having a clean surface would be exposed into gas adsorbate immediately. By using the microcalorimetric device, several measurement for heat of adsorption, such as CO, H2 and C2H4 adsorption on Pt/SiO2 and Ni/A2O3 have been carried out. The results obtained from our experiments are in good agreement with papers published in literature.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/111160
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Li L,Wang XD,Zhang T,et al. A microcalorimeter for measurement of differential heat of adsorption on surface of solid catalysts[C]. 见:3th International and 5th China-Japan Joint Symposium on Calorimetry and Thermal Analysis. 中国. 2002-8-15.
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