石油化工2024，Vol.53Issue(4)：496-504,9.DOI:10.3969/j.issn.1000-8144.2024.04.003
介孔SBA-16负载Nb2O5光催化脱硫催化剂
Mesoporous SBA-16 supported Nb2O5 photocatalytic desulfurization catalyst
摘要
Abstract
Nb2O5/SBA-16 catalyst was prepared with impregnation method,and the structure and properties of the catalyst were characterized by XRD,FTIR,N2 adsorption-desorption,UV-Vis,SEM,TEM,and XRF.The photocatalytic oxidative desulfurization activity of the catalyst was investigated using dodecane solution containing dibenzothiophene as the simulated oil,30%(w)H2O2 and methanol as the oxidant and the extractant respectively.The process conditions were optimized and the catalytic mechanism was proposed.The experimental results show that Nb2O5/SBA-16 catalyst maintains a highly ordered mesoporous structure with high specific surface area and uniform dispersion of active components.The reaction follows first-order kinetics.When 20%(w)Nb2O5/SBA-16 is used as catalyst,the catalyst amount is 1%(w),the O/S molar ratio is 10∶1,and the volume ratio of extractant to simulated oil is 1∶1,the best desulfurization rate is 98.06%,and is still high after 6 cycles.The main active intermediate species in the reaction are superoxide radicals and holes.关键词
Nb2O5/SBA-16/负载/光催化/脱硫/分子筛Key words
Nb2O5/SBA-16/load/photocatalysis/desulfurization/molecular sieve分类
化学工程引用本文复制引用
李剑,丁重允,王雯雯,杨丽娜..介孔SBA-16负载Nb2O5光催化脱硫催化剂[J].石油化工,2024,53(4):496-504,9.基金项目
辽宁省高等学校杰出青年学者成长计划(LJQ2015062) （LJQ2015062）
辽宁省科学技术厅项目(20170540585) （20170540585）
辽宁省教育厅项目(L2015296,L2016018). （L2015296,L2016018）
