摘要
以SAPO-11分子筛为载体,采用共浸渍法制备了一系列N i和W含量不同的N iW/SAPO-11催化剂,并对催化剂进行了表征。以正辛烷为模型化合物,在连续微反装置上对催化剂的异构化性能进行了评价,考察了n(W)∶n(N i)和反应条件对催化剂的异构化性能的影响。实验结果表明,当催化剂中n(W)∶n(N i)=2.0时,正辛烷的转化率最高,并且异构化性能好,在温度400℃、压力2.0M Pa、LHSV1.0h-1、V(H2)∶V(正辛烷)=400∶1的条件下,正辛烷的转化率约为70%、异构化产物选择性约为80%、芳构化产物选择性约为1.5%,并且催化剂的稳定性好。
A series of NiW/SAPO - 11 catalysts with various Ni and W contents were prepared by coimpregnation, and catalysts were characterized by means of XRD, FTIR and BET. Isomerization performances of SAPO- 11 molecular sieves modified by Ni and W were evaluated in microreactor with n-octane as probe compound. Effects of n （W） ： n （ Ni）, reaction temperature, reaction pressure, LHSV and V（ H2 ） ： V（ n-octane）on isomerization of n - octane were studied. Under optimum conditions： n （W） ： n （Ni） = 2.0,V （ H2 ） ： V（ n-octane） =400：1, LHSV 1.0 h^-1, pressure 2.0 MPa and temperature 400℃, conversion of noctane, and selectivities of isomerization and aromatization products were about 70%, 80% and 1.5% respectively. Stability of NiW/SAPO - 11 catalyst was promising.
出处
《石油化工》
EI
CAS
CSCD
北大核心
2005年第8期729-733,共5页
Petrochemical Technology
作者简介
柯明（1963-），男，安徽省嘉山县人，博士，副教授，电话010-89733372，电邮keming698@sohu．com。
