中文摘要：

研究了不同硅铝比的ZSM-5与Ni/ZSM-5分子筛协同低温等离子体技术对甲苯降解性能的影响.以Ni O（Nickel Oxide）为活性组分,采用浸渍法对ZSM-5分子筛进行改性,利用氮气吸附脱附（BET）、X射线衍射仪（XRD）、X射线光电子能谱分析（XPS）、H2程序升温还原（H2-TPR）、NH3程序升温脱附（NH3-TPD）、Toluene程序升温脱附（Toluene-TPD）等技术表征样品的物理化学性质.考察了硅铝比对ZSM-5与Ni/ZSM-5分子筛体系中甲苯的吸附性能,研究了不同放电电压下硅铝比对甲苯降解率、碳平衡及二氧化碳选择性的影响,并采用气相色谱-质谱联用仪（GC-MS）分析了催化剂表面的有机产物.结果表明：硅铝比不但影响分子筛本身的物理化学特性（比表面积、氧化还原性能、表面酸性、疏水性等）,还会影响Ni的负载形态和方式,更高的硅铝比与Ni O的负载能促进甲苯深度氧化,减少副产物,提高碳平衡和二氧化碳选择性.

英文摘要：

Our study concentrated on the effect of different silica and alumina ratio（Si/Al） on ZSM-5 and Ni/ZSM-5 catalysts,and then analyzed their contribution to the toluene degradation under plasma activation.ZSM-5 doped with nickel oxide was synthesized by impregnation method,and then characterized by N2adsorption（BET）,X-ray diffraction（XRD）,X-ray photoelectron spectroscopy（XPS）,H2-temperature program reduction（H2-TPR）,NH3-temperature programmed desorption（NH3-TPD）,Toluene-temperature programmed desorption（Toluene-TPD） and so on.The influences ofSi/Al on ZSM-5 and Ni/ZSM-5 were investigated for the toluene adsorption capacity.Meanwhile,the toluene removal efficiency,carbon balance and carbon dioxide selectivity were evaluated under different discharge voltage and Si/Al in non-thermal plasma system.Moreover,organic products over the catalyst surface were analyzed by GC-MS.The results clearly demonstrated that the Si/Al is an essential parameter which could modify the physicochemical characteristics of zeolite itself and also influence the loading form of Ni.Higher Si/Al and the presence of Ni O could promote the toluene oxidation,carbon dioxide selectivity and carbon balance,and decrease the formation of by-products in the process of plasma-catalysis.