SrFe_2O_4应用于苯乙烯选择性催化氧化制苯甲醛  

Selective Catalytic Oxidation of Styrene to Benzaldehyde Over SrFe_2O_4 Catalysts

作　　者：冯世宏[1] 闫绍峰[1] 刘自力[2] 

机构地区：[1]辽宁工业大学化学与环境工程学院,辽宁锦州121004 [2]广州大学化学化工学院,广东广州510006

出　　处：《石油学报（石油加工）》2012年第4期657-661,共5页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金(21076047)资助

摘　　要：采用溶胶-凝胶法合成了尖晶石型铁酸锶,利用苯乙烯选择性氧化为探针反应,对其进行了催化活性评价。结果表明,金属原子数的最佳配比n(Fe)∶n(Sr)=2∶1,催化活性最高。通过XRD检测,铁酸锶的最佳焙烧温度为973K,揭示了铁酸锶的内部结构和规律性。在常压和催化剂用量0.5g的前提下,最佳反应条件:n(H2O2)∶n(Styrene)=1∶1,反应温度343K,反应时间9h;苯甲醛的选择性达到了65.7%,收率为34.3%。该工艺路线拥有反应条件温和、产物性能优异等优点,为开拓其应用提供了实验数据和科学依据。The effect of catalyst atomic ratio on the performance of styrene selective oxidation by H2O2 as probe reaction over spinel type strontium ferrate prepared through sol-gel method was investigated.The catalyst evaluation results showed that the optimum catalyst atomic ratio was n（Fe）∶n（Sr）= 2∶1 with high catalytic activity.It was detected by XRD.The optimum calcination temperature was 700℃.Micro-structure and essence disciplinarian of strontium ferrate were disclosed.Under normal atmospheric pressure and 0.5 g catalyst dosage conditions,the optimum feed ratio,reactive temperature and reactive time were n（H2O2）∶n（Styrene）=1∶1,343 K and 9 h,respectively.The selectivity and yield of benzaldehyde were 65.7% and 34.3%,respectively.The technological process route possessed under ambient conditions with some advantage,such as excellent properties in product.It could provide experimental data and scientific evidence to develop from requirement of applications.

关 键 词：SrFeO 溶胶-凝胶法 苯乙烯 苯甲醛 催化氧化 

分 类 号：O657.3[理学—分析化学]