本期摘要

Total abstract

天然气开采气体泄漏检测敏感材料的制作与分析注：国家自然科学基金《NO．51202303）；重庆市科委基础前沿项目（NO．cstc2016jcyjA0006）．中国发明专利（200910104467．X）作者：郑树隆’．曾文。单位：1．中石化国际事业中东有限公司．阿联酋迪拜262471：2．重庆大学材料科学与工程学院．重庆400030摘要：制作了一种双螺旋电极结构的气敏原件．该元件对天然气甲烷气体显示出良好的气敏性能，在最佳工作温度320。C检测100ppm的甲烷气体．灵敏度达到47。响应恢复时间短．稳定性优越，并且检测极限达到了10ppm。该气敏元件具有电场连续、扩散电流特性优异以及电极面积小等优势．在天然气开采现场检测漏气安全隐患等领域．具有广阔的应用前景。

Fabrication and Analysis of a Kind of Gas Sensitive Material for Natural Gas Leakage Detection in Natural Gas Exploitation ZHENG Shu-long1, ZENG Wen2 1.Sinopec International Business Middle East Limited, Dubai 262471, United Arab Emirates; 2.College of Materials Science and Engineering, Chongqing University, Chongqing 400030, China Abstract： A kind of gas sensing cell with double helix electrode structure is fabricated, which shows good gas sensitivity to natural gas methane with sensitivity of 47 in 100ppm methane gas at the optimum working temperature of 320-C. The response and recovery time of the cell are short, the stability is excellent, and the detection limit reaches 10ppm. The gas sensor has the advantages of continuous electric field, excellent diffusion current performance and small electrode area. It has a broad application prospect in the field of natural gas extraction for detecting the hidden danger of gas leakage. Key words： natural gas; methane; sensitivity; double helix electrode; gas sensor