中文摘要：

用不同浓度的Na2CO3溶液对HZSM-5沸石进行碱处理,并采用XRD、XRF、SEM、N2吸附-脱附及NH3-TPD方法表征碱处理前后的沸石样品HZSM-5和HZSM-5（c）。以HZSM-5和HZSM（c）分别制备了Ni-Mo/HZSM-5与Ni-Mo/HZSM-5（c）催化剂,并以模型化合物为原料,采用小型连续固定床反应器考察了不同浓度Na2CO3处理对其催化硫醚化反应性能的影响。结果表明,采用Na2CO3溶液处理HZSM-5沸石,在保持沸石微孔结构的基础上,形成了微孔-介孔多级孔结构,增加了沸石的总比表面积和介孔体积,同时调变了沸石的酸性。Na2CO3处理提高了Ni-Mo/HZSM-5（c）催化剂的硫醚化活性和选择性,当Na2CO3溶液浓度为4.0mol/L时,所得Ni-Mo/HZSM-5（4.0）的催化活性较高,硫醇转化率达到95.60%,异戊二烯对硫醇选择性达到73.10%。

英文摘要：

HZSM-5 zeolites were alkaline-treated with various concentrations of Na2CO3 solution.The samples before and after Na2CO3 treatment,HZSM-5and HZSM-5（c）were characterized by XRD,XRF,SEM,N2 adsorption-desorption and NH3-TPD techniques.The Ni-Mo/HZSM-5 and Ni-Mo/HZSM-5（c）catalysts were prepared and used for sulfur etherification.The influence of Na2CO3 solution concentration on catalytic performance of Ni-Mo/HZSM-5（c）in sulfur etherification was investigated in a small-scale fixed bed reactor with model compounds as feedstock.The results showed that the micropore-mesopore hierarchical pore structure was formed in HZSM-5（c）by Na2CO3 treatment,which increased the total surface area and mesoporous volume and modulated its acidity,while maintained the microporous structure.The sulfur etherification catalytic activity and selectivity of Ni-Mo/HZSM-5（c）were improved due to Na2CO3 treatment.The Ni-Mo/HZSM-5（4.0）obtained by treatment of 4.0mol/L Na2CO3 showed better catalytic activity,with mercaptan conversion of 95.60% and isopentane diene to mercaptan selectivity of 73.10%.