硫改性镍催化剂丁烯-1双键临氢异构性能  

Performance of Sulfur Modified Catalysts for Hydroisomerization of 1-Butene

作　　者：赵多 王建强[2] 刘仲能[2] 周兴贵[1] 袁渭康[1] Zhao Duo;Wang Jianqiang;Liu Zhongneng;Zhou Xinggui;Yuan Weikang(State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;State Key Laboratory of Green Chemical and Industrial Catalysis, Shanghai Research Institute of Petrochemical Technology, SINOPEC, Shanghai 201208, China)

机构地区：[1]华东理工大学化学工程联合国家重点实验室,上海200237 [2]中国石油化工股份有限公司上海石油化工研究院绿色化工与工业催化国家重点实验室,上海201208

出　　处：《化学反应工程与工艺》2017年第4期305-311,共7页Chemical Reaction Engineering and Technology

摘　　要：将Ni/Al_2O_3催化剂浸渍于有机多硫化物(TPS-37)中制备得到硫改性Ni/Al_2O_3催化剂。采用X射线荧光光谱(XRF)、热重-质谱(TG-MS)联用、X射线光电子能谱仪(XPS)和程序升温还原(TPR)等方法对催化剂进行表征,并考察了硫改性Ni/Al_2O_3催化剂上丁烯-1双键临氢异构性能。结果表明,硫改性Ni/Al_2O_3催化剂经高温氢气活化及甲苯萃取后,催化剂上硫含量基本不变。硫与催化剂之间存在较强的相互作用,使氧化镍在相对较低的温度下被H2还原;硫改变了Ni金属周围电子环境,从而显著改善催化剂的双键临氢异构性能。在反应温度60℃,氢压1.6 MPa,氢气和碳四烃物质的量之比(氢烃比)为0.013的条件下,硫改性Ni/Al_2O_3催化剂催化丁烯-1双键临氢异构反应,丁烯-1转化率可达92.6%,丁烯-2选择性为97.5%。催化剂稳定性实验结果表明,硫改性催化剂催化性能好,稳定性优良。The sulfur-modified Ni-based catalysts were prepared by the incipient wetness impregnation technique with the Ni/Al2O3in solution of organic polysulfide.The catalysts were characterized by X-ray fluorescence(XRF),thermogravimetry-mass spectrometry(TG-MS),X-ray photoelectron spectroscopy(XPS)and temperature-programmed reduction(TPR).The performance of sulfur-modified Ni/Al2O3catalyst on hydrogen isomerization of1-butene double bond was investigated.The results showed that the sulfur content of the sulfur-modified Ni/Al2O3catalyst was almost unchanged after the activation of high temperature hydrogen and extraction with toluene.Since there was a strong interaction between the sulfur and the catalyst,nickel oxide was reduced by hydrogen at relatively low temperature.Sulfur changed the electronic environment around the Ni metal,thereby significantly improved the hydroisomerization of the catalyst at the double bond.The conversion up to92.6%,selectivity of2-butene97.5%were obtained when sulfur modified Ni/Al2O3catalyst was used to catalyze the hydroisomerization of1-butene under the operation conditions of temperature60℃,hydrogen pressure1.6MPa and the molar ratio of H2to C40.013.The catalyst stability tests demonstrated that the sulfur-modified Ni/Al2O3performed excellent with good stability.

关 键 词：硫 镍 丁烯-1 临氢异构 

分 类 号：TQ221.213[化学工程—有机化工] O643.32[理学—物理化学]