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An Investigation on Nano-Ni Catalytic Hydrogenation of Pyrrole and Its derivatives at Normal Temperature and Pressure
Ge Xiutao1, Jiao Jian2, Xiao Jianping2, Fan Chongzheng2
1.Department of Chemistry, Chuzhou normal college, Chuzhou 239012;2.Department of Chemical Physics, University of Science and Technology of China, Hefei 230026
Abstract:
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.
Key words:  Normal temperature and pressure, Nickel-based catalyst, Ultrasonic wave, Catalytic hydrogenation, Pyrrole
FundProject:国家自然科学基金资助项目(29833080),安徽省教育厅自然科学基金资助项目(99J10158)
常温常压下吡咯及其衍生物的镍催化加氢反应考察
葛秀涛*1, 焦健2, 肖建平2, 范崇正2
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
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。
关键词:  常温常压  镍基催化剂  超声波  催化加氢  吡咯、吡咯烷和吡咯烷酮
DOI:10.1088/1674-0068/14/2/231-236
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