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采用X射线荧光光谱和吡啶原位红外光谱等表征手段对ZSM-5分子筛进行表征,分析ZSM-5分子筛的组成与表面酸性;并以ZSM-5分子筛为催化剂,通过正交试验考查了反应时间、光照强度、氧气含量、水分子含量和涂覆面积比等因素对瓦斯降解率的影响,确定最优试验条件,并初步确定了反应产物.结果表明:当ZSM-5分子筛的硅铝摩尔比为150时,催化性能最好,对于初始体积分数为3.5%的甲烷,当反应时间为120 min、光照强度为4 W、O2体积分数为30%、水分子含量为0.3%和涂覆面积比为75%时,瓦斯降解率达86.40%.
The structure and surface acidity of ZSM-5 zeolite were characterized by X-ray fluorescence spectrometry and pyridine in situ infrared spectroscopy. The ZSM-5 molecular sieve was used as catalyst to investigate the reaction time , The light intensity, the oxygen content, the water content and the coating area ratio on the gas degradation rate, the optimum experimental conditions were determined and the reaction products were preliminarily determined.The results showed that when the silica-alumina molar ratio When the reaction temperature is 150 ℃, the catalytic performance is the best. When the initial volume fraction of methane is 3.5%, when the reaction time is 120 min, the light intensity is 4 W, the volume fraction of O2 is 30%, the water content is 0.3% and the coating area ratio When 75%, gas degradation rate of 86.40%.