直接合成Nb-SBA-15催化氧化苯乙烯

摘要用直接合成法制备Nb-SBA-15介孔分子筛,并用XRD、BET、FT-IR和DTA测试手段对其进行分析。结果表明,Nb-SBA-15仍保留高度有序的介孔结构。以质量分数30%的H2O2为氧化剂,丙酮为溶剂,对Nb-SBA-15催化氧化苯乙烯反应进行了研究,试验得到较适宜工艺条件为:反应温度为70℃,反应时间为10 h,催化剂用量为原料质量的10.0%,n(苯乙烯)∶n(H2O2)∶n(丙酮)=1∶2∶2,苯乙烯的转化率可达43.21%,苯甲醛的选择性为94.32%。

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	白向向
	刘琤
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	魏田升

关键词： Nb-SBA-15 催化氧化苯乙烯苯甲醛

Abstract： Mesoporous molecular sieves Nb-SBA-15 were synthesized by direct synthesis，and characterized by XRD, BET, FTIR and DTA The results show that Nb-SBA-15 still retains a high ordered mesoporous structure of SBA-15. Using H2O2 as oxidant and acetone as solvent, catalytic oxidation of styrene to benzaldehyde were carried out over Nb-SBA-15, and the optimum conditions were obtained. When the reaction temperature is 70 ℃, the reaction time is 10 h, the amount of catalyst is 10.0% of the raw material, n(styrene)∶n(hydrogen peroxide)∶n(acetone)=1∶2∶2, the conversion of styrene is up to 43.21%, and the selectivity of benzaldehyde is up to 94.32%.

Keywords： Nb-SBA-15 catalytic oxidation styrene benzaldehyde

published 2010-11-10

引用本文:

白向向, 刘琤, 王雷, 魏田升.直接合成Nb-SBA-15催化氧化苯乙烯[J]. 化学工业与工程, 2010,27(6): 480-485

BAI Xiang-Xiang, LIU Cheng, WANG Lei, WEI Tian-Sheng.Direct Synthesis of Nb-SBA-15 for Catalytic Oxidation of Styrene[J]. Chemcial Industry and Engineering, 2010,27(6): 480-485