噻吩在镍基非晶态合金上的吸附和脱附  

ADSORPTION AND DESORPTION OF THIOPHENE OVER NICKEL BASED AMORPHOUS ALLOY

作　　者：江雨生[1] 张晓昕[1] 孟祥堃[1] 宗保宁[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油学报（石油加工）》2006年第3期35-39,共5页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点基础研究发展规划项目(G2000048004)资助

摘　　要：应用静态吸附、动态吸附、程序升温脱附和程序升温还原等实验方法,考察了噻吩在Ni基非晶态合金上的吸附和脱附行为。常温下,噻吩分子首先吸附在清洁的Ni表面,并立刻被活化,发生氢解反应,C—S键断裂,释放出烃类部分,S留在Ni原子上。噻吩可以在Ni基非晶态合金表面发生强度不同的化学吸附。弱化学吸附的噻吩可以脱附;强化学吸附的噻吩不会脱附,而在高温下发生氢解反应。Static adsorption, dynamic adsorption, TPD and TPR were used to investigate the adsorption and desorption of thiophene on the nickel based amorphous alloy. At room temperature, thiophene was adsorbed on the surface of the nickel based amorphous alloy firstly and activated. Then, hydrogenolytic cleavage of thiophene occured, causing the C-S bonds broken, hydrocarbons released and sulfur remained on the surface of the alloy. The different chemisorption states of thiophene were observed on nickel based amorphous alloy. Weak chemisorbed thiophene could be desorbed from the alloy＇s surface with the temperature＇s increasing. Strong chemisorbed thiophene could not be desorbed, but was hydrogenolytic cleaved at high temperature.

关 键 词：噻吩 非晶态合金 吸附 程序升温脱附 程序升温还原 

分 类 号：TQ426.95[化学工程]