中文摘要：

分别采用Na2CO3，Na2CO3／十六烷基三甲基溴化铵（CTAB）混合碱对HZSM-5分子筛进行改性处理，利用x射线衍射仪（XRD）、BET法、扫描电子显微镜（SEM）、N2等温吸附脱附、氨程序升温脱附（NH，-TPD）等分析手段对碱处理前后的分子筛进行了表征，并考察了碱处理前后HZSM-5分子筛催化噻吩烷基化的性能。结果表明：采用Na2CO，／CTAB混合碱处理商业HZSM-5分子筛[n（SiO2）／n（A1203）为50]，在Na2C03溶液浓度为4mol／L，c（CTAB）／c（Na2C03）为0．050的最优条件下，分子筛的比表面积由改性前的318m2／g增大到485m2／g，催化噻吩烷基化反应的噻吩转化率、选择性则分别由改性前的35．47％，58．32％依次提高到93．57％，79．68％。

英文摘要：

HZSM - 5 molecular sieve was modified by Na2CO3 solutions and Na2COJCTAB mixed al- kali solutions respectively. The samples before and after alkali treatment were characterized by XRD, BET, N2 adsorption - desorption, SEM and NH3 - TPD analysis methods,and the catalytic performance for thiophene alkylation of the samples before and after alkali treatment were investigated. The results showed that when the commerical HZSM - 5 molecu- lar sieve [ n （ SiO2 ）/n （ AI203 ） = 50 ] was treated by Na2COJCTAB mixed alkali,and the optimal condi-tions of the molar concentration of Na2CO3 solutions was 4 mol/L and c （CTAB）/c （Na2CO3） was 0. 050, the specific surface area of the molecular sieve increased from 318 m2/g to 485 m2/g,and the thiophene conversion and selectivity of the catalytic thiophene alkylation reaction increased from 35.47% and 58.32% to 93.57% and 79.68% respectively.