碳纳米管负载的铂催化剂对柠檬醛选择加氢及CO微分吸附热研究  

Pt Catalyst Supported on Carbon Nanotubes for Selective Hydrogenation of Citral and Differential Heats of CO Adsorption

作　　者：张耀君[1] 李聚源[2] 李文震[3] 辛勤[3] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,西安710049 [2]西安石油大学化学化工学院,西安710065 [3]中国科学院大连化学物理研究所催化基础国家重点实验室,大连116023

出　　处：《高等学校化学学报》2005年第7期1345-1347,M010,共4页Chemical Journal of Chinese Universities

基　　金：教育部留学回国人员科研启动基金(批准号:200555);陕西省自然科学基金(批准号:2004B04)资助.

摘　　要：Carbon nanotube is found to be a novel support for the selective hydrogenation of citral in this paper. Selective hydrogenation of citral was carried out in an autoclave at 5 MPa and 323 K. The results indicate that the selectivity of the products, unsaturated alcohols, is about 86 over Pt/CNTs catalyst and 48 over Pt/XC-72 catalyst, respectively. The differential heat of CO adsorption measured by microcalorimetry is firstly used to probe surface adsorption sites of platinum catalyst supported on carbon nanotubes. The experimental results indicate that the Pt/CNTs catalyst shows a higher initial differential heat of CO adsorption(126 kJ/mol) than the Pt/XC-72 catalyst(106 kJ/mol).Carbon nanotube is found to be a novel support for the selective hydrogenation of citral in this paper. Selective hydrogenation of citral was carried out in an autoclave at 5 MPa and 323 K. The results indicate that the selectivity of the products, unsaturated alcohols, is about 86 over Pt/CNTs catalyst and 48 over Pt/XC-72 catalyst, respectively. The differential heat of CO adsorption measured by microcalorimetry is firstly used to probe surface adsorption sites of platinum catalyst supported on carbon nanotubes. The experimental results indicate that the Pt/CNTs catalyst shows a higher initial differential heat of CO adsorption(126 kJ/mol) than the Pt/XC-72 catalyst(106 kJ/mol).

关 键 词：柠檬醛选择加氢 CO微分吸附热 Pt/CNTs催化剂 

分 类 号：O643.32[理学—物理化学]