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介孔分子筛SBA-15-PO3H2的合成条件
SYNTHESIS OF MESOPOROUS MOLECULAR SIEVE SBA-15-PO3H2
【摘要】 实验以后合成法制备介孔分子筛催化剂SBA-15-PO3H2。讨论了焙烧温度和时间、搅拌时间、磷硅摩尔比等对催化剂性能的影响。其最佳合成条件为:焙烧温度为500℃,焙烧时间5 h,搅拌时间4 h,n(P):n(Si)=7:100。采用XRD、SEM/TEM分析介孔分子筛的结构和形貌,实验结果表明催化剂SBA-15-PO3H2保持了纯硅SBA-15二维六方介孔结构。该催化剂重复使用性能良好。
【Abstract】 SBA-15-PO3H2 is prepared using a post-synthetic method.The optimal synthesis conditions are found as follows:calcination temperature 500℃,calcination time 5 h,stirring time 4 h,and mole ratio of phosphorus and silicon 7:100.The product is characterized by XRD and SEM/TEM.The results show that the structure of SBA-15-PO3 H2 retains the mesoporous hexagonal structure of SBA- 15.It can be reused with high activity for esterification reactions.
【关键词】 介孔分子筛;
SBA-15;
焙烧;
磷酸;
正硅酸乙酯;
【Key words】 mesoporous material; SBA-15; calcination; phosphoric acid; silicic acid tetraethyl ester;
【Key words】 mesoporous material; SBA-15; calcination; phosphoric acid; silicic acid tetraethyl ester;
- 【文献出处】 精细石油化工 ,Speciality Petrochemicals , 编辑部邮箱 ,2009年05期
- 【分类号】O643.36
- 【下载频次】119