SAPO-11的制备及正十八烷异构性能研究  

Preparation of SAPO-11 and Hydroisomerization Performance of n-Octadecane

作　　者：谢敏慧[1] 齐学振 刘学军[1] 王红卫[2] 孔望欣 李永强[1] 计建炳[1] 卢美贞[1] 

机构地区：[1]浙江省生物燃料利用技术研究重点实验室,浙江工业大学化学工程学院,浙江杭州310014 [2]浙江医药股份有限公司昌海生物分公司,浙江绍兴312000

出　　处：《分子催化》2016年第6期515-522,共8页Journal of Molecular Catalysis(China)

基　　金：浙江省自然科学基金(LQ14B060002);国家自然科学基金(21306174、21306091)项目;浙江省海洋经济创新发展区域示范成果转化及产业化项目(2015-83)~~

摘　　要：采用水热法合成出不同硅铝比的SAPO-11分子筛,负载Pt后在固定床反应器上对正十八烷进行临氢异构化.采用XRD、BET、SEM、TEM和NH_3-TPD对分子筛及催化剂进行表征.考察了不同Si含量对正十八烷临氢异构性能的影响,确定硅铝比为0.3最适宜;改变反应温度、压力、空速以及氢油比等参数,考察了0.5%Pt/SAPO-11催化剂的异构化性能.结果表明:340℃、3 MPa、空速为1 h-1和氢油体积比为1 000∶1时,正十八烷转化率达到73.1%,煤汽油比1.44,异构收率64.2%.SAPO-11 molecular sieves with various Si/A1 ratios were synthesized by hydrothermal method to control the acidic sites of Pt/SAPO-11 catalysts. The properties of samples were characterized by XRD, BET, SEM, TEM and NH3-TPD. Over a fixed bed reactor, the effects of various Si contents on the hydro-isomerization performance of n-Octadecane were investigated. In order to carry out the catalytic tests, the hydroisomerization of n-Octadecane over 0.5% Pt/SAPO-11 （Si/A1 = 0.3 ）has been investigated by changing reaction parameters such as temperature, pressure, WHSV and the ratio of hydrogen to oil. The result showed conversion of octadecane had reached 73.1%, and the hydroisomerization yiele of octadecane was 64.2%, that at the temperature of 340 ℃, pressure 3 MPa, space velocity 1 H-1 and hydrogen oil ratio 1 000 ： 1, along with middle/light distillates ratio of 1.44.

关 键 词：水热合成 SAPO-11 硅铝比 临氢异构 正十八烷 

分 类 号：O643.32[理学—物理化学]