Al-Ni_2P/SBA-15催化剂的制备、表征及加氢脱硫催化性能(英文)  

Preparation,Characterization and Hydrodesulphurization Catalytic Performance of Al-Ni_2P/SBA-15 Catalysts

作　　者：赵鹏飞[1] 季生福[1] 魏妮[1] 刘辉[1] 李成岳[1] 

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室,北京100029

出　　处：《无机化学学报》2010年第12期2273-2279,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家重点基础研究发展计划(973计划,No.2006CB202503)资助项目

摘　　要：以磷酸氢二铵为磷源,硝酸镍为镍源,硝酸铝为助剂铝源,制备了nP/nNi=0.8,Al含量为1.06wt%～6.35wt%的一系列Al-Ni2P/SBA-15催化剂。采用XRD、TEM和N2吸脱附等技术对催化剂的结构进行了表征研究,以二苯并噻吩(DBT)作为模型化合物,在微型固定床反应器上对催化剂的加氢脱硫(HDS)性能进行了评价。结果表明,Al修饰的Al-Ni2P/SBA-15催化剂仍然保持介孔结构,当Al含量低于5.29wt%时,催化剂的物相主要是Ni2P,当Al含量在5.29wt%-6.35wt%之间时,催化剂的物相为Ni2P和Ni12P5。Al含量为4.24wt%的3-Al-Ni2P/SBA-15催化剂具有最好的二苯并噻吩加氢脱硫催化活性,在反应温度为360℃,反应压力为3.0 MP的条件下,3-Al-Ni2P/SBA-15催化剂对二苯并噻吩的转化率可达99.0%。A series of Al-Ni2P/SBA-15 catalysts with initial P/Ni molar ratio of 0.8 were prepared using（NH4）2HPO4 as a source of phosphorus,Ni（NO）3 as a source of nickel,and Al content from 1.06wt% to 6.35wt%.The catalysts were characterized by XRD,TEM and N2 adsorption-desorption.The catalytic performances of the hydrodesulfurization（HDS） were evaluated in a fixed-bed micro-reactor using dibenzothiophene（DBT） as the model compound.The results showed that the catalysts modified by Al still maintained the mesoporous structure.The Ni2P phase was mainly observed in the Al-Ni2P/SBA-15 catalysts when Al content was less than 5.29wt%.The Ni2P phase and Ni12P5 phase were found when Al content was from 5.29wt% to 6.35wt%.The 3-Al-Ni2P/SBA-15 catalyst with Al content of 4.24wt% had the best catalytic activity for the HDS of the DBT.Under the reaction conditions of 3.0 MPa,360 ℃,the activity of the 3-Al-Ni2P/SBA-15 catalyst can reach 99.0%.

关 键 词：磷化镍 二苯并噻吩 加氢脱硫 铝 介孔 

分 类 号：O643.36[理学—物理化学]