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镧改性SBA-15液相过氧化氢氧化苯制苯酚的活性考察
引用本文:顾晓利,何明,史以俊,罗振扬,姚春才. 镧改性SBA-15液相过氧化氢氧化苯制苯酚的活性考察[J]. 石油学报(石油加工), 2010, 26(3): 364-364. DOI: 10.3969/j.issn.1001-8719.2010.03.009
作者姓名:顾晓利  何明  史以俊  罗振扬  姚春才
作者单位:南京林业大学 化学工程学院, 江苏 南京 210037
基金项目:江苏省自然科学基金,南京林业大学大学生实验室创新项目 
摘    要:采用水热法原位合成了La掺杂的La/SBA-15催化剂,采用XRD、N2吸附-脱附测定等手段对样品进行了表征,考察了La/SBA-15催化剂对苯/H2O2液相氧化合成苯酚反应的催化活性。结果表明,制得的La/SBA-15复合材料保持载体SBA-15高度有序的介孔二维六角孔道结构。在反应温度323K,以1mol苯计的催化剂用量0.75g、溶剂乙腈用量250mL,H2O2/苯的摩尔比为2,反应时间5 h的条件下,苯的转化率为7.2%,苯酚选择性高达90%。且La/SBA-15催化剂重复使用6次,催化活性基本保持稳定。

关 键 词:SBA-15分子筛改性    苯氧化  苯酚  
收稿时间:2009-03-30
修稿时间:2009-08-23

CATALYTIC ACTIVITY OF La-MODIFIED SBA-15 FOR THE LIQUID-PHASE OXIDATION OF BENZENE TO PHENOL WITH HYDROGEN PEROXIDE
GU Xiaoli,HE Ming,SHI Yijun,LUO Zhenyang,YAO Chuncai. CATALYTIC ACTIVITY OF La-MODIFIED SBA-15 FOR THE LIQUID-PHASE OXIDATION OF BENZENE TO PHENOL WITH HYDROGEN PEROXIDE[J]. Acta Petrolei Sinica (Petroleum Processing Section), 2010, 26(3): 364-364. DOI: 10.3969/j.issn.1001-8719.2010.03.009
Authors:GU Xiaoli  HE Ming  SHI Yijun  LUO Zhenyang  YAO Chuncai
Affiliation:College of Chemical Engineering, Nanjing University of Forestry, Nanjing 210037, China
Abstract:La/SBA-15 was synthesized by using in-situ hydrothermal method, and characterized by XRD and N2 adsorption-desorption measurements. The liquid phase hydroxylation of benzene to phenol with H2O2 over La/SBA-15 catalyst was carried out to investigate the catalytic activity of La/SBA-15 in this oxidation reaction. The results showed that La has been incorporated into SBA-15 molecular sieve. The prepared La/SBA-15 keeps the highly ordered mesoporous two-dimensional hexagonal structure and the mesoporous channel structure of SBA-15. The conversion of benzene and the selectivity of phenol reached 7.2% and 90%, respectively, in the liquid phase hydroxylation reaction under the temperature of 323K, La/SBA-15 amount and acetonitrile solvent amount of 0.75g and 250mL both for 1mol benzene, n(H2O2)/n(benzene) of 2 and reaction time of 5 h. The catalytic activity of La/SBA-15 did not change after 6 recycle uses.
Keywords:SBA-15 molecular sieve modification  Lanthanum  Benzene oxidation  Phenol
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