环戊二烯气相加氢催化剂Ni-Ru/Al2O3的研究  

Research on Ni-Ru/Al2O3 catalyst for gas-phase hydrogenation of cyclopentadiene

作　　者：李泽壮[1] 刘经伟[1] 徐骏[1] Li Zezhuang;Liu Jingwei;Xu Jun(Nanjing Research Institute of Sinopec Yangzi Petrochemical Co.,Ltd.,Nanjing 210048,Jiangsu, China)

机构地区：[1]中国石化扬子石油化工有限公司南京研究院,江苏南京210048

出　　处：《工业催化》2020年第11期58-61,共4页Industrial Catalysis

摘　　要：采用等体积浸渍法制备了Ni/Al-1、Ni/Al-2和Ni-Ru/Al2O3催化剂,利用BET和H2-TPR等手段对其进行表征,并考察催化剂在环戊二烯气相加氢制环戊烯反应中的性能。结果表明,相对于Ni/Al-1催化剂,Ni/Al-2催化剂的载体比表面积较大,使得Ni物种有更高的分散度和更多的可被还原Ni物种数量,催化剂的反应活性也更高。向Ni/Al-2催化剂中引入助剂Ru后,可以降低Ni-Ru/Al2O3催化剂表面Ni物种的还原温度,使其在较低氢烃比和较高环戊二烯空速下获得较高的环戊烯收率,即催化剂Ni-Ru/Al2O3在氢烃比0.54和环戊二烯液体空速32.9(g催化剂·h)-1条件下,环戊二烯转化率可达75%,环戊烯选择性可达89.1%,环戊二烯收率高达67.0%,有较好的工业化应用前景。Ni/Al-1,Ni/Al-2 and Ni-Ru/Al2O3 catalysts were prepared through incipient wetness impregnation,characterized by means of BET and H2-TPR and then investigated for synthesis of cyclopentene by gas-phase hydrogenation of cyclopentadiene.The results indicated that the specific surface area of Ni/Al-2 catalyst was larger than that of Ni/Al-1 catalyst,which resulted in higher dispersion of Ni species,more species that could be reduced to Ni,and higher activity.The addition of Ru to Ni/Al-2 catalyst could reduce the reduction temperature of Ni species on the catalyst surface and higher yield of cyclopentene was obtained at lower hydrogen hydrocarbon ratio and higher cyclopentadiene space velocity.Under the reaction conditions of hydrogen hydrocarbon ratio of 0.54,and cyclopentadiene space velocity of 32.9(gcatalyst·h)-1,conversion of cyclopentadiene could reach 75%,selectivity and yield of cyclopentene was as high as 89.1%and 67.0%repectively over Ni-Ru/Al2O3 catalyst,showing a good prospect of industrial application.

关 键 词：催化化学 环戊二烯 加氢 环戊烯 

分 类 号：O643.36[理学—物理化学] TQ426.94[理学—化学]