摘要
采用水热体系中-步法合成了苯磺酸基修饰SBA-15的SBA-15-ph-SO2H催化剂。以液相反应为探针，系统考察了不同溶剂体系对催化剂催化活性的影响。结果表明，以该型杂化材料为催化剂，Beckmann重排反应存在明显的溶剂效应。在非极性非质子溶剂体系中，催化剂显示了较好的催化活性和选择性。根据实验结果，尝试性地提出了-个五元环过渡态的反应机理。
Hybrid inorganic-organic solid acid material SBA-15-ph-SO3H was synthesized by a one-step co-condensation method. The catalytic activity of the obtained materials was studied by the liquid-phase Beckmann rearrangement of cyclohexanone oxime to ε-caprolactam. The results showed that there existed an obvious ＂Solvent effect＂ in this reaction system. Moreover, a reaction mechanism involving a five-member ring mediate-product was tentatively proposed when toluene was used as solvent.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2008年第B10期201-203,共3页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
国家重点基础研究发展计划“973”项目（2007CB613501）资助
