Ni/P-HY催化剂上正构烷烃的加氢转化  

HYDROCONVERSION OF n-PARAFFINS OVER Ni/P-HY CATALYSTS

作　　者：李到[1] 任杰[1] 孙予罕[1] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室,山西太原030001

出　　处：《石油学报（石油加工）》2002年第4期33-37,共5页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点基础研究发展项目 (19990 2 2 40 2 )

摘　　要：研究了磷改性对Ni/HY催化剂表面性质和催化反应性能的影响。NH3 TPD和Py FTIR的结果表明 ,磷改性导致了催化剂表面上的B酸酸量减少 ,酸强度提高。CO DRIFTS结果表明 ,磷与镍相互作用 ,提高了金属的分散度 ,并有效地提高了催化剂的金属中心与酸中心的比例。因此 ,在正辛烷临氢转化反应中 ,少量磷改性的Ni/HY催化剂可以显著地提高加氢异构化的选择性 ,减少裂解反应。The effect of phosphorus on the surface properties and catalytic performance of bifunctional catalyst was studied by a series of Ni/P HY catalysts with different phosphorus contents. Characterization of NH 3 TPD and Py FTIR showed that the amount of B acid sites on the catalysts decreased after phosphorus modification, but the strong acid sites became more. According to CO DRIFTS results, the dispersion of nickel species increased due to the effect between phosphorus and nickel. Therefore, the metal/acid ratio increased and consequently, the activity and the isomerization selectivities of Ni/P HY catalysts with small amount of phosphorus were improved in the hydroconversion of n octane.

关 键 词：Ni/P-HY催化剂 正构烷烃 加氢转化 炼油 磷改性 

分 类 号：O643.32[理学—物理化学]