常温常压下吡咯及其衍生物的镍催化加氢反应考察  

An Investigation on Nano-Ni Catalytic Hydrogenation of Pyrrole and Its derivatives at Normal Temperature and Pressure

作　　者：葛秀涛[1] 焦健[2] 肖建平[2] 范崇正[2] 

机构地区：[1]滁州师范专科学校化学系,滁州239012 [2]中国科学技术大学化学物理系,合肥230026

出　　处：《Chinese Journal of Chemical Physics》2001年第2期231-236,共6页化学物理学报（英文）

基　　金：国家自然科学基金!资助项目 (2 98330 80 ) ;安徽省教育厅自然科学基金!资助项目 (99J10 158)&&

摘　　要：为进一步研究常温常压下吡咯及其衍生物的镍催化加氢反应 ,我们对试剂吡咯、吡咯烷和吡咯烷酮做了相应的催化加氢实验。并采用电镜 (TEM -HREM)、X射线衍射 (XRD)对Ni基催化剂的形貌、结构、加氢活性和超声波对其影响进行了检测 ,同时还用紫外吸收光谱、气相色谱等对加氢产物进行了分析考察。结果表明超声波能促进镍基催化剂活性 ,使镍微晶 (111)晶面间距增大 1.5%、并保持高分散态。常温常压下纳米镍基催化剂对吡咯、吡咯烷和吡咯烷酮的加氢反应显示一定的催化活性 ;吡咯加氢首先生成吡咯烷 ,进而使环打开生成低碳烃、氨等产物 ,总反应为零级 ,符合表面接触反应特征。For further studied on nano-Ni catalytic hydrogenation of pyroole and its derivatives at normal temperature and pressure, we have did relevant catalytic hydrogenation experiments to pyrrole, pyrrolidine and pyrrolidone. The images and microstructure of nickel-based catalytic, hydrogenation activity and effect of ultrasonic wave were detected by the TEM-HREM and XRD. Besides the products of hydrogenation were investigated by the UV and GC. The results demonstrated that employment of ultrasonic wave has benefit on the maintenance of catalyst activity. The interspace of nickel (111) crystal face increases its distance at 1.5%. The nanosized nickel-based catalyst exhibits catalytic activity for the hydrogenation of pyrrole, pyrrolidine and pyrrolidone at normal temperature and pressure. The hydrogenation of pyrrole produces pyrrolidine at first, then the ring is broken and low-C hydrocarbons, ammonia etc are produced. The general reaction is found to be zero-order, which agrees with the character of surface-contact reaction.

关 键 词：镍基催化剂 超声波 催化加氢 吡咯 吡咯烷 吡咯烷酮 

分 类 号：O643.3[理学—物理化学]