Journal of Inorganic Materials ›› 2018, Vol. 33 ›› Issue (9): 963-968.doi: 10.15541/jim20170554

• Orginal Article • Previous Articles     Next Articles

Synthesis of Pure-silica BETA Zeolite by the Method of Seed-direct Steam-assisted Crystallization

Shou-Ai FENG1(), Jun ZHOU1, Xuan-Yu YANG2, Hong LIU1, Jiang-Feng HUANG1, Jia-Feng BAI1, Xiao-Wei CHENG2(), Yong-Hui DENG2   

  1. 1. Technology Center of China Tabacco Guangxi Industrial Co., Ltd, Nanning 530001, China
    2. Department of Chemistry, Fudan University, Shanghai 200433, China
  • Received:2017-11-20 Revised:2018-02-24 Online:2018-09-20 Published:2018-08-14
  • About author:FENG Shou-Ai. E-mail: 897178472@qq.com
  • Supported by:
    Natural Science Foundation of Shanghai (15ZR1402000);Shanghai Pujiang Talent Program (16PJ1401100)

Abstract:

The pure-silica zeolite BETA has a promising prospect in the field of cigarette harm reduction and petrochemical industry. In present work, the single-template method, named as the seed-direct steam-assisted crystallization (SAC), was used to synthesize the pure-silica zeolite BETA. And then the samples were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen adsorption, and Fourier Transform infrared spectroscopy (FT-IR). The results revealed that BETA seeds, template (TEAOH) and alkalinity exert great effects on the synthesis of pure-silica zeolite BETA. The BETA zeolite with polymorph A enrichments (58%-68%) is synthesized by SAC method, which can not be affected by the change of molar ratio of the raw materials. The pure-silica zeolite BETA possesses the hydrophobic properties, which can be used in the separation of organic/H2O, and the removal of harmful organic materials in cigarette smoke.

Key words: seed-directed, steam-assisted-crystallization, SAC, pure-silica, zeolite BETA

CLC Number: 

  • TQ174