Effect of Electric Field to Catalytic Sensor

摘要：

Output sensitivity of catalytic sensor could be affected by electric field. There are two reasons. First, electric field increases the adsorption of Al2O3 support to gas, so the oxidation reaction rate of measured gas is promoted. Second, electric field strengthens the catalysis of oxidation reaction of measured gas by improving the activity of catalyst and exciting more free radical of measured gas. Because of assistance of electric field to catalysis, catalytic sensor could get proper output sensitivity at lower temperature. It is at lower temperature that decrease of surface of catalytic sensor was slow and the output stability was improved. Moreover, if catalytic sensor was pre-poisoned in electric field, the attenuation of sensitivity in poisoning experiment of H2S is slower than ordinary catalytic sensors.

关键词： catalysis of electric field catalytic element sensor

作者: Tong Minming Li Jiao Huang Yan Dai Xinlian

作者单位: College of information and electric engineering, China University of mining and technology XuZhou, JiangSu221008, China

会议类型: 国际会议

会议名称: 2006 IEEE International Conference on Information Acquisition

会议地点: 山东威海

会议语种:英文

页码: 1005-1009

在线出版日期: 2006-08-20（万方平台首次上网日期，不代表论文的发表时间）