SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (1): 53-59.DOI: 10.1016/j.cjche.2017.04.010

• Separation Science and Engineering • 上一篇    下一篇

Tuning sol size to optimize organosilica membranes for gas separation

Huating Song1, Yibin Wei1,2, Chenying Wang1, Shuaifei Zhao2, Hong Qi1   

  1. 1 State Key Laboratory of Material-Oriented Chemical Engineering, Membrane Science and Technology Research Center, Nanjing Tech University, Nanjing 210009, China;
    2 Department of Environmental Sciences, Macquarie University, Sydney 2109, New South Wales, Australia
  • 收稿日期:2017-02-24 修回日期:2017-04-19 出版日期:2018-01-28 发布日期:2018-03-01
  • 通讯作者: Shuaifei Zhao,E-mail addresses:shuaifei.zhao@mq.edu.au;Hong Qi,E-mail addresses:hqi@njtech.edu.cn
  • 基金资助:

    Supported by the National Natural Science Foundation of China (21276123, 21490581), the National High Technology Research and Development Program of China (2012AA03A606), the "Summit of the Six Top Talents" Program of Jiangsu Province (2011-XCL-021), and the Open Research Fund Program of Collaborative Innovation Center of Membrane Separation and Water Treatment (2016YB01).

Tuning sol size to optimize organosilica membranes for gas separation

Huating Song1, Yibin Wei1,2, Chenying Wang1, Shuaifei Zhao2, Hong Qi1   

  1. 1 State Key Laboratory of Material-Oriented Chemical Engineering, Membrane Science and Technology Research Center, Nanjing Tech University, Nanjing 210009, China;
    2 Department of Environmental Sciences, Macquarie University, Sydney 2109, New South Wales, Australia
  • Received:2017-02-24 Revised:2017-04-19 Online:2018-01-28 Published:2018-03-01
  • Contact: Shuaifei Zhao,E-mail addresses:shuaifei.zhao@mq.edu.au;Hong Qi,E-mail addresses:hqi@njtech.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China (21276123, 21490581), the National High Technology Research and Development Program of China (2012AA03A606), the "Summit of the Six Top Talents" Program of Jiangsu Province (2011-XCL-021), and the Open Research Fund Program of Collaborative Innovation Center of Membrane Separation and Water Treatment (2016YB01).

摘要: A series of organosilica sols are prepared by the polymeric sol-gel method using 1, 2-bis(triethoxysilyl)ethane (BTESE) as the precursor. Particle size distributions of the BTESE-derived sols are systematically investigated by carefully adjusting the synthesis parameters (i.e., water ratios, acid ratios and solvent ratios) in the sol process. In certain conditions, increasing the water ratio or the acid ratio tends to cause larger sol sizes and bimodal particle size distributions. However, higher solvent ratios lead to smaller sol sizes and unimodal particle size distributions. The organosilica membranes prepared from the optimized sols show excellent H2 permeances (up to 4.2×10-7 mol·m-2·s-1·Pa-1) and gas permselectitivies (H2/CO2 is 9.5, H2/N2 is 50 and H2/CH4 is 68). This study offers significant insights into the relationship between the sol synthesis parameters, sol sizes and membrane performance.

关键词: Organosilica membrane, Sol-gel, Sol synthesis, Gas separation

Abstract: A series of organosilica sols are prepared by the polymeric sol-gel method using 1, 2-bis(triethoxysilyl)ethane (BTESE) as the precursor. Particle size distributions of the BTESE-derived sols are systematically investigated by carefully adjusting the synthesis parameters (i.e., water ratios, acid ratios and solvent ratios) in the sol process. In certain conditions, increasing the water ratio or the acid ratio tends to cause larger sol sizes and bimodal particle size distributions. However, higher solvent ratios lead to smaller sol sizes and unimodal particle size distributions. The organosilica membranes prepared from the optimized sols show excellent H2 permeances (up to 4.2×10-7 mol·m-2·s-1·Pa-1) and gas permselectitivies (H2/CO2 is 9.5, H2/N2 is 50 and H2/CH4 is 68). This study offers significant insights into the relationship between the sol synthesis parameters, sol sizes and membrane performance.

Key words: Organosilica membrane, Sol-gel, Sol synthesis, Gas separation