离子液体作用下的噻吩加氢脱除机理研究  

Study on hydrogenation desulfurization of thiophene under ionic liquids

作　　者：巩学[1] 聂毅[1] 代飞[2] 

机构地区：[1]曲阜师范大学化学化工学院,山东曲阜273165 [2]中国科学院过程工程研究院,北京100190

出　　处：《计算机与应用化学》2013年第5期451-453,共3页Computers and Applied Chemistry

基　　金：国家自然科学基金面上项目(21076113)

摘　　要：采用Materials Studio 6.1中的Dmol3程序,程序中的数字积分是medium水平,位移收敛标准、能量和受力分别是5×10^(-3) A,2×10^(-5) au/和4×10^(-3) au/,利用DFT理论中的梯度校正GGAPW91方法和NDN机组计算。计算离子液体催化燃料油加氢脱硫过程的机理。通过对噻吩在离子液体酸性阴离子作用下的中间体和过渡态能量的研究,发现离子液体的阴离子不仅起到萃取作用,且在过渡态形成的过程中有促进加氢脱硫的作用,在一定的程度上起到催化剂的作用,并且活泼氢有利于噻吩加氢的进行。计算将为离子液体加氢脱硫机理提供重要的参考价值。The Dmol3 calculation in Materials Studio6.1, the theory of DFT GGAPW91 method, and the NDN unit were utilized to calculate in this study. The medium level of Digital differential analyzer, the 5 ×10^-3 A of displacement convergence criteria, the 2×10^-5 au/A of energy, the 4×10^-3 au/A of mechanical in calculation is used. Study on the role of ionic liquids （ILs） in hydrogenation desulfurization of fuels. The intermediate and transition state energy of thiophene under the acidic anion of ILs were studied. The results indicated that the anion acted as extraction agent, and was found to make a promotion in the hydrogenation desulfurization process and acted as catalyst to some extent in the emerging course of critical complex. In addition the active hydrogen advanced the proceeding of thiophene hydrogenation. The Calculation provides the important reference value for ionic liquid hydrodesulphurization mechanism.

关 键 词：噻吩 离子液体 加氢脱硫 分子模拟 

分 类 号：TQ015.9[化学工程] O6-39[理学—化学]