富B酸多级孔材料在催化裂化催化剂中的应用  

APPLICATION OF HIERARCHICAL POROUS MATERIAL RICH IN BRONSTED ACID IN FCC CATALYST

作　　者：熊晓云[1] 高雄厚[1] 胡清勋[1] 赵红娟[1] Xiong Xiaoyun;Gao Xionghou;Hu Qingxun;Zhao Hongjuan(Lanzhou Petrochemical Research Center,PetroChina,Lanzhou 730060,Gansu,China)

机构地区：[1]中国石油兰州化工研究中心

出　　处：《精细石油化工》2019年第3期24-27,共4页Speciality Petrochemicals

基　　金：中国石油重大科技专项(2016E-0701)

摘　　要：采用廉价工业原料成功制备了富B酸多级孔硅铝材料,并采用N2吸附-脱附、扫描电镜(SEM)、透射电镜(TEM)、吡啶吸附红外、NH3程序升温脱附(NH3-TPD)进行了表征。结果表明:该材料由直径约在20~30nm的初级粒子堆积形成,孔体积为0.99mL/g,可几孔径为43.2nm。与工业氧化铝相比,具有更高的酸量,同时引入了丰富的B酸中心,B/L酸比值2.2。采用该材料制备的催化裂化催化剂具有更好的重油转化能力、焦炭选择性,和更高的总液收。Using cheap commercial raw material, a novel hierarchically porous silica-alumina material rich in Br nsted acidities are successfully prepared. The sample was characterized by N2 adsorption-desorption, SEM, TEM, pyridine adsorption IR spectra and NH 3-TPD techniques. The results indicated the material was accumulated by primary particles with diameter of 20-30 nm. The pore volume could be up to 0.99 mL/g and the most probable pore diameter was 43.2 nm. Compared to the commercial alumina, it has higher acid amount. Due to the abundant Br nsted acidities, Br nsted-to-Lewis acidity ratio was up to 2.2. FCC catalyst prepared with this porous material has higher conversion rate for heavy oil and higher coke selectivity and total liquid yield.

关 键 词：硅铝材料 多级孔 B酸 催化裂化 

分 类 号：TE624.41[石油与天然气工程—油气加工工程]