摘要
采用过饱和浸渍法制备了TiO_2改性的β/SBA-15复合分子筛,通过XRD、N_2吸附-脱附和FT-IR等表征手段对合成的试样进行表征。结果表明TiO_2-β/SBA-15同时兼具微-介双孔孔道结构,活性TiO_2纳米颗粒高度均匀地分散在复合分子筛表面。提出了光催化氧化脱硫反应的反应机理,考察了TiO_2-β/SBA-15在模拟柴油中的静态光催化氧化脱硫性能并对其进行了动力学研究。动力学研究表明,脱硫行为符合动力学一级反应模型,相关系数R^2大于0.99,反应表观活化能E——a为12.45kJ/mol。
TiO2 modifiedβ/SBA-15 composite molecular sieves was prepared by supersaturation impregnation method.The synthesized samples were characterized by XRD,N2 adsorption-desorption and FT-IR.The results show that TiO2-β/SBA-15 can maintain micro-mediated double pore structure,and the active TiO2 nanoparticles are uniformly dispersed on the surface of the composite molecular sieve.The reaction mechanism of photocatalytic oxidation desulfurization reaction was proposed.The photocatalytic oxidation desulfurization performance of TiO2-β/SBA-15 in diesel fuel was investigated and studied.Kinetic studies show that the desulfurization behavior is consistent with the kinetic first-order reaction model,the correlation coefficient R2 is greater than 0.99,and the Ea is 12.45 kJ/mol.
作者
赵帅
石薇薇
韩娜
陈政利
沈健
Zhao Shuai;Shi Weiwei;Han Na;Chen Zhengli;Shen Jian(College of Petrochemical Engineering Liaoning Shihua University,Fushun113001,Liaoning,China;Sinopec Qilu Branch,Zibo 255400,Shandong,China)
出处
《精细石油化工》
CAS
北大核心
2019年第1期14-19,共6页
Speciality Petrochemicals
