P123对NiMoAl催化剂加氢性能的影响  

Effects of P123 modification on hydrotreating performance of NiMoAl catalysts

作　　者：谢凯宏[1] 方岩雄[1] 蔡晓兰 孙大雷[1] Xie Kaihong;Fang Yanxiong;Cai Xiaolan;Sun Dalei(Faculty of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510009,Guangdong,China)

机构地区：[1]广东工业大学轻工化工学院,广东广州510009

出　　处：《工业催化》2020年第3期31-36,共6页Industrial Catalysis

基　　金：广东省科技计划项目(2016B090934002);广东省重大科技专项(2012A090300006)。

摘　　要：采用原位溶胶凝胶法,改变P123的添加量,制备了一系列NiMoAl催化剂。采用粉末X-射线衍射(XRD)、N 2吸附-脱附、等离子发射光谱(ICP)和X-射线光电子能谱(XPS)等对催化剂进行表征,并选用二苯并噻吩(DBT)和萘的混合物加氢作为模型反应,考察P123添加量对催化活性的影响。结果表明,P123的添加能够增大催化剂比表面积、孔容和孔径,使更多的Mo活性位点暴露在催化剂表面,有利于提高催化剂硫化度。DBT和萘的转化率均随着P123添加量的增加而增加。采用NiMoAl(4.0)作为催化剂,反应温度280℃时,DBT的转化率可达到99.90%,萘的转化率可达到75.33%。A series of NiMoAl catalysts with various P123 modifier contents were prepared by in situ sol-gel method.The catalysts were characterized by powder X-ray diffraction(XRD),N 2 adsorption-desorption,plasma emission spectroscopy(ICP)and X-ray photoelectron spectroscopy(XPS).The hydrogenation of mixture of dibenzothiophene(DBT)and naphthalene was used as a model reaction to study the effect of P123 on the catalytic activity.The characterization results showed that specific surface area,pore volume and pore diameter of the catalyst increased with the increase of P123 adding amount.Adding P123 could make more Mo species exposed on the catalyst surface and improve sulfidation degree.The conversion of DBT and naphthalene increased with the increasing of additionamoutof P123.When NiMoAl(4.0)was used as catalyst,the conversion of DBT and naphthalene could reach 99.90%and 75.33%respectively at 280℃.

关 键 词：催化化学 NiMoAl催化剂 P123 加氢反应 二苯并噻吩 萘 

分 类 号：O643.36[理学—物理化学] TE624.9[理学—化学]