石油化工高等学校学报

石油化工高等学校学报 ›› 2018, Vol. 31 ›› Issue (02): 27-31.DOI: 10.3969/j.issn.1006-396X.2018.02.005

• 石油化工 • 上一篇    下一篇

改性Y型分子筛酸性与催化PHA制 PAP性能的关联性探究

徐东洋1,卜宇豪1, 王焕1, 安会勇1, 何宇鹏1, 丁晓光2   

  1. (1.辽宁石油化工大学 化学化工与环境学部,辽宁 抚顺 113001;2.辽宁石油化工大学 计算机与通信工程学院,辽宁 抚顺 113001)
  • 收稿日期:2016-06-02 修回日期:2017-09-30 出版日期:2018-04-26 发布日期:2018-04-25
  • 通讯作者: 王焕 (1986-),女,硕士,工程师,从事分子筛催化领域的研究; E-mail:wanghuangryx@163.com
  • 作者简介:徐东洋 (1991-),男,硕士研究生,从事有机合成及分子筛催化领域的研究; E-mail:376151123@qq.com
  • 基金资助:
    国家自然科学基金项目(No. 21202077)

Correlation between Acidity of the Modified Y Zeolites and the Performance of Preparation of p-Aminophenol from Phenyl-Hydroxylamine

Xu Dongyang1Bu Yuhao1, Wang Huan1An Huiyong1He Yupeng1Ding Xiaoguang2   

  1. (1. College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun Liaoning 113001, China;  2. School of Computer and Engineering, Liaoning Shihua University, Fushun Liaoning 113001, China)
  • Received:2016-06-02 Revised:2017-09-30 Published:2018-04-26 Online:2018-04-25

摘要: 采用水热合成法制备了NaY分子筛,经离子交换和水热处理制得HY、USY和 Ce-USY。研究了不同类型的Y分子筛对催化苯基羟胺重排合成对氨基苯酚的影响。XRD、N2吸附和Py-FTIR表征结果表明,此系分子筛虽然结晶性有差异,但均具有Y型分子筛的骨架拓扑结构。HY分子筛微孔孔径约为0.58 nm。NaY分子筛几乎无B酸中心。对其他3种分子筛而言,B酸量大小为:HY>USY≈Ce-USY;L酸量大小为:USY≈Ce-USY>HY。催化反应结果表明,Y型分子筛在此反应中表现出较差的效果,目标产物对氨基苯酚选择性和收率均低于15.00%。可见分子筛需维持酸性和孔径大小恰当时,才能使用最少的原料得到收率和纯度都较高的对氨基苯酚。

关键词: Y型分子筛, 酸性, Bambenger重排, 对氨基苯酚, 选择性

Abstract:

Different NaY molecular sieves, including NaY, HY, USY and Ce-USY, were prepared by in situ hydrothermal process, ion exchange and/or hydrothermal treatment. The effects of isologous Y molecular sieves on p-aminophenol preparation from phenyl-hydroxylamine rearrangement were studied. XRD, N2 adsorptiondesorption and Py-FTIR results showed that although the molecular sieves had differences in crystallinity, they all had the skeleton topology of Y type molecular sieves. The micropore size of HY molecular sieve was about 0.58 nm. NaY molecular sieve had almost no B acid site. For three kinds of other molecular sieves, B acid content ranked in the descending sequence: HY>USY≈Ce-USY, and L acid content ranked in the descending sequence: USY≈Ce-USY>HY. The performance of their catalysts showed that Y-type molecular sieve had the inferior performance, the selectivity and yield of p-aminophenol of target product were less than 15%. So the p-aminophenol product with high yield and purity could be prepared from the smallest amount of reactant only when molecular sieve maintained an appropriate amount of acidity and pore size.

Key words: Y zeolite, Acidity, Bambenger rearrangement, p-Aminophenol, Selective

引用本文

徐东洋,卜宇豪, 王焕, 安会勇, 何宇鹏, 丁晓光. 改性Y型分子筛酸性与催化PHA制 PAP性能的关联性探究[J]. 石油化工高等学校学报, 2018, 31(02): 27-31.

Xu Dongyang,Bu Yuhao, Wang Huan,An Huiyong,He Yupeng,Ding Xiaoguang. Correlation between Acidity of the Modified Y Zeolites and the Performance of Preparation of p-Aminophenol from Phenyl-Hydroxylamine[J]. Journal of Petrochemical Universities, 2018, 31(02): 27-31.

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