Open-Pore Two-Dimensional MFI Zeolite Nanosheets for the Fabrication of Hydrocarbon-Isomer-Selective Membranes on Porous Polymer Supports

详细信息    查看全文

• 作者：Han Zhang ; Prof. Qiang Xiao ; Prof. Xianghai Guo ; Prof. Najun Li ; Prashant Kumar ; Neel Rangnekar ; Mi Young Jeon ; Prof. Shaeel Al-Thabaiti ; Prof. Katabathini Narasimharao ; Prof. Sulaiman Nasir Basahel ; Prof. Berna Topuz ; Frank J. Onorato ; Prof. Christopher W. Macosko ; Prof. K. Andre Mkhoyan and Prof. Michael Tsapatsis
• 刊名：Angewandte Chemie
• 出版年：2016
• 出版时间：June 13, 2016
• 年：2016
• 卷：128
• 期：25
• 页码：7300-7303
• 全文大小：3764K
• ISSN：1521-3757

文摘

Two-dimensional zeolite nanosheets that do not contain any organic structure-directing agents were prepared from a multilamellar MFI (ML-MFI) zeolite. ML-MFI was first exfoliated by melt compounding and then detemplated by treatment with a mixture of H₂SO₄ and H₂O₂ (piranha solution). The obtained OSDA-free MFI nanosheets disperse well in water and can be used for coating applications. Deposits made on porous polybenzimidazole (PBI) supports by simple filtration of these suspensions exhibit an n-butane/isobutane selectivity of 5.4, with an n-butane permeance of 3.5×10⁻⁷ mol m⁻² s⁻¹ Pa⁻¹ (ca. 1000 GPU).