石油化工高等学校学报

石油化工高等学校学报 ›› 2011, Vol. 24 ›› Issue (1): 48-51.DOI: 10.3696/j.issn.1006-396X.2011.01.012

• 石油化工 • 上一篇    下一篇

Nb-SBA-15的直接合成及其催化氧化苯乙烯性能研究

白向向,沈健* ,魏田升   

  1. 辽宁石油化工大学石油化工学院,辽宁抚顺113001
  • 收稿日期:2010-06-30 修回日期:2010-11-16 出版日期:2011-02-25 发布日期:2011-02-25
  • 作者简介:白向向(1987- ),女,河南洛阳市,在读硕士

Direct Synthesis of Nb-SBA-15 and the Catalytic Oxidation Performance of Styrene

  1. School of Petrochemical Engineering, Liaoning Shihua University, Fushun Liaoning 113001,P.R.China
  • Received:2010-06-30 Revised:2010-11-16 Published:2011-02-25 Online:2011-02-25

摘要: 以Nb2O5为铌源直接合成Nb-SBA-15,通过X射线衍射(XRD)、氮气吸附脱附分析(BET)、红外光谱(FT-IR)、热重分析(DTA)表征手段对其结构进行分析。结果表明,铌负载于SBA-15后,仍保留SBA-15的高度有序的二维六方介孔结构。(Z)-Nb-SBA-15分子筛催化剂对苯乙烯氧化反应具有较高的催化活性,温度为70 ℃,n(苯乙烯)/n(过氧化氢)/n(丙酮)=1∶2∶2,催化剂质量为原料质量的10.0%的条件下反应10 h,苯乙烯的转化率达到43.21%,苯甲醛的选择性为94.32%,且该催化剂稳定性较好,是性能良好的固体酸催化剂。

关键词: (Z)-Nb-SBA-15 , 催化氧化 , 苯乙烯 , 苯甲醛

Abstract: Niobium-containing mesoporous molecular sieves Nb-SBA-15 were synthesized by using Nb2O5 as niobium source. The molecular sieves were characterized by means of small angle XRD, BET, FT-IR,DTA. The results show that with niobium loaded on SBA-15, it possess characteristic structure of SBA-15. The (Z)-Nb-SBA-15 molecular sieve catalyst has a high catalytic activity for the oxidition of styrene, at the temperature 70 ℃, n(styrene)/n(H2O2)/n(acetone)= 1∶2∶2, the quantity of catalyst was 10.0% of [KG*4]the [KG*4]raw [KG*4]material, reaction [KG*4]time 10 h, the [KG*4]conversion [KG*4]of [KG*4]styrene [KG*4]is [KG*4]up [KG*4]to 43.21%, the selectivity of benzaldehyde is up to 94.32%, and the catalyst has good stability, is a preferred solid acid catalyst.

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引用本文

白向向,沈健,魏田升. Nb-SBA-15的直接合成及其催化氧化苯乙烯性能研究[J]. 石油化工高等学校学报, 2011, 24(1): 48-51.

BAI Xiang-xiang, SHEN Jian,WEI Tian-sheng. Direct Synthesis of Nb-SBA-15 and the Catalytic Oxidation Performance of Styrene[J]. Journal of Petrochemical Universities, 2011, 24(1): 48-51.

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