石油化工高等学校学报

石油化工高等学校学报 ›› 2015, Vol. 28 ›› Issue (2): 31-34.DOI: 10.3969/j.issn.1006-396X.2015.02.006

• 石油化工 • 上一篇    下一篇

碱溶液刻蚀法制备介孔Y型分子筛及其性能表征

何依隆,  张 磊,  胡 鑫,  胡少鐘,  王淳青,  唐 宇,  秦玉才,  宋丽娟   

  1. ( 辽宁石油化工大学辽宁省石油化工催化科学与技术重点实验室, 辽宁抚顺1 1 3 0 0 1)
  • 收稿日期:2014-09-10 修回日期:2014-12-04 出版日期:2015-04-25 发布日期:2015-06-23
  • 通讯作者: 宋丽娟( 1 9 6 2 - ) , 女, 博士, 教授, 从事新型催化材料及清洁油品生产新工艺研究; E - m a i l : l s o n g 5 6@2 6 3. n e t 。
  • 作者简介:何依隆( 1 9 9 2 - ) , 男, 在读本科生, 化学工程与工艺专业; E - m a i l : 7 2 9 6 7 3 2 4 5@q q. c o m。
  • 基金资助:
    国家自然基金资助项目( 2 1 0 7 6 1 0 0) ; 国家级大学生创新创业训练计划项目( 2 0 1 3 1 0 1 4 8 0 0 5) 。

Preparation and Characterization of Mesoporous Zeolite Y by Alkaline Solution Etching Method

  1. (Liaoning Key Laboratory of Petrochemical Engineering, Liaoning Shihua University, Fushun Liaoning 113001, China)
  • Received:2014-09-10 Revised:2014-12-04 Published:2015-04-25 Online:2015-06-23

摘要: 采用碱溶液刻蚀法由工业生产的 N a Y分子筛原粉制备介孔 Y型分子筛。运用X射线衍射( XR D) 和 骨架红外光谱( F T I R) 表征样品的晶体结构, N2 吸附等温线和扫描电镜( S EM) 表征孔结构和形貌特征, 并采用吡啶 红外光谱技术( P y - F T I R) 表征样品的酸性能。结果表明, N a Y分子筛在适当浓度的碱溶液以及较温和的条件下, 处 理后可保持分子筛晶体的拓扑结构和基本形貌结构, 但在处理过程中晶粒表面或晶粒内可被刻蚀出一定的缺陷介 孔结构。另外, 碱刻蚀前后对改性后 H型分子筛中B酸中心量的影响不明显, 但大大减少了L酸中心的数量。

关键词:  Y分子筛,  , 碱刻蚀, 介孔, 酸性

Abstract: Mesoporous Y Zeolites were prepared by alkaline solution etching method using industrial NaY zeolite powders as raw materials. The crystal structure of the samples was characterized using Xray diffraction (XRD) and skeleton Fourier transform infrared spectroscopy (FTIR). The pore structure and morphology were measured by N2 adsorption isotherms and scanning electron microscopy (SEM). The acid properties were characterized using pyridineinfrared spectroscopy (PyFTIR) technique. The results show that NaY zeolites can maintain the topology of zeolite crystal and basic morphology structure after treated in a suitable concentration by alkaline solution at mild conditions. A defected mesoporous structure in the zeolite is obtained in the process of alkaline solution etching. In addition, the alkali etching has little effect on the amount of B acid sites of H type zeolites, while, the number of L acid centers greatly reduces in the mesoporous Y Zeolites. 

Key words: Y zeolite,    ,  Alkaline solution etching,    ,  Mesopore,    ,  Acidity

引用本文

何依隆, 张 磊, 胡 鑫. 碱溶液刻蚀法制备介孔Y型分子筛及其性能表征[J]. 石油化工高等学校学报, 2015, 28(2): 31-34.

He Yilong, Zhang Lei, Hu Xin, Hu Shaozhong,et al. Preparation and Characterization of Mesoporous Zeolite Y by Alkaline Solution Etching Method[J]. Journal of Petrochemical Universities, 2015, 28(2): 31-34.

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