无机材料学报 ›› 2019, Vol. 34 ›› Issue (2): 225-232.DOI: 10.15541/jim20180361

• 研究快报 • 上一篇    

“蒸汽相转化”法制备球形多级Y沸石

杜艳泽1,2,杨晓娜1,宁伟巍1,孔庆岚1,秦波2,郑家军1,李文林1,李瑞丰1   

  1. 1. 太原理工大学 能源化工与催化研究中心, 太原 030024;
    2. 中国石油化工集团 大连石油化工研究院, 大连116045
  • 收稿日期:2018-08-13 出版日期:2019-02-20 发布日期:2019-01-24
  • 作者简介:杜艳泽. E-mail: duyanze.fshy@sinopec.com

Sphere-like Hierarchical Y Zeolite Fabricated by Steam-assisted Conversion Method

DU Yan-Ze1, 2, YANG Xiao-Na1, NING Wei-Wei1, KONG Qing-Lan1, QIN Bo2, ZHENG Jia-Jun1, LI Wen-Lin, LI Rui-Feng1   

  1. 1. Key Laboratory of Coal Science and Technology MOE, Research Centre of Energy Chemical &Catalytic Technology, Taiyuan University of Technology, Taiyuan 030024, China;;
    2. Dalian Research Institute of Petroleum &Petrochemicals, SINOPEC, Dalian 116045, China;
  • Received:2018-08-13 Online:2019-02-20 Published:2019-01-24
  • About author:DU Yan-Ze (1976-), male, candidate of PhD. E-mail: duyanze.fshy@sinopec.com
  • Supported by:
    Foundation item: National Natural Science Foundation of China (U1463209, 21371129, 21376157);Sino Petroleum Corp (116050)

摘要:

本文采用“蒸汽相转化”法合成了球形多级Y沸石。采用X射线衍射(XRD), 扫描电镜(SEM), 透射电子显微镜(TEM), N2吸附-脱附, 固态核磁共振(NMR)谱和傅里叶变换红外(IR)光谱等表征手段对制备材料的结构性能进行了表征。SEM观察结果表明合成的Y型沸石是由尺寸为50~300 nm的初级晶粒组成的球形多晶聚集体, 透射电镜观察结果表明多晶聚集体为空心Y型沸石。通过分析FT-IR, 29Si NMR, SEM和TEM等表征结果, 提出了空心球形Y沸石的形成机理。

 

关键词: 多级孔, 多晶聚集体, 空心球, “蒸汽相转化”法;

Abstract:

Sphere-like hierarchical Y zeolite was synthesized by a “steam-assisted conversion (SAC)” procedure. The as-synthesized samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), N2 adsorption-desorption, solid-state nuclear magnetic resonance (NMR) spectra, and Fourier transform infrared (IR) spectroscopy. Results observed by SEM displayed that the as-synthesized Y zeolite was sphere-like polycrystalline aggregates composed of primary crystals with size of about 50-300 nm. These results exhibited that some polycrystalline aggregates were hollow Y zeolite spheres. Combined with characterization results of FT-IR, 29Si NMR, SEM, and TEM, a mechanism illustrating formation of the hollow Y zeolite polycrystalline spheres was proposed.

Key words: hierarchical, polycrystalline aggregates, hollow sphere, steam-assisted conversion

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