【摘要】 利用β-SBA-15载体并通过分步浸渍法合成了Fe-Co-β-SBA-15催化剂。通过XRD、BET、FT-IR、TG-DTA和EDS对催化剂进行表征测试。以苯乙烯为原料、H2O₂为氧化剂、丙酮为溶剂进行催化氧化反应,考察了Co质量分数、Fe质量分数、焙烧温度、焙烧时间对氧化反应的影响。结果表明,在Co质量分数为10%、Fe质量分数为5%、焙烧温度为550℃、焙烧时间为5 h的优化条件下催化氧化苯乙烯合成苯甲醛,苯乙烯转化率为93. 69%,苯甲醛选择性、收率分别为89. 73%、82. 94%。更多还原

【Abstract】 Fe-Co-β-SBA-15 catalyst is synthesized by stepwise impregnation method using β-SBA-15 as carrier,and is characterized by means of XRD,BET,FT-IR,TG-DTA and EDS.Catalytic oxidation is performed over the as-prepared catalyst by using styrene as raw material,H2 O₂ as oxidant and acetone as solvent. The effects of Co loading amount,Fe loading amount,calcination temperature and calcination time in preparing the catalyst on the oxidation reaction are investigated. It is shown that the conversion rate of styrene can reach 93. 69%,and the selectivity and yield of benzaldehyde are 89. 73% and 82. 94%,respectively when benzaldehyde is synthesized via catalytic oxidation of styrene over the catalyst that is prepared under the optimal conditions that the mass contents of Co and Fe are 10% and 5%separately,and calcination lasts for 5 hours at 550℃.更多还原