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《Coal Science and Technology》 2012-01
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Experiment Study on Catalytic Element of Double Group Co-Catalyst Gas Sensor

WANG Ying1,2,TONG Min-ming1,2,DENG Yu-jiao1,2(1.School of Information and Electrical Engineering,China University of Mining and Technology,Xuzhou 221008,China; 2.Research Institute of Gas and Safety Monitoring and Measuring Technology,China University of Mining and Technology,Xuzhou 221008,China)  
Due to the easy firing of the catalytic elements in the gas sensor,the activity reduction and poisoning,the rare-earth elements were tried to modify the catalytic elements of the gas sensor.A test was conducted on the special surface area,activity and stability of the n-Ce-Zr-Al2O3 catalyst mixed with rare-earth double group components and the n-Al2O3 common nano catalyst.The test results showed that the catalytic elements of the mixed Ce-Zr co-catalyst,the reaction activity was obviously improved,the working temperature of the methane with the volume fraction of 1% could be reduced by 40 ℃ than the common catalytic elements and the reaction stability was obviously improved.The gas catalytic elements was inserted into the test module for the error test.The test showed that under methane with volume fraction of 1%~5%,the max measuring error was about 3%,far below than the national standard and was fully met with the gas detection requirements.
【Fund】: 国家自然科学基金重点资助项目(60910005)
【CateGory Index】: TP212
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