• 文献标题:   Preparation of a graphene oxide/faujasite composite adsorbent
  • 文献类型:   Article
  • 作  者:   KIM DW, HAN H, KIM H, GUO XW, TSAPATSIS M
  • 作者关键词:   zeolite, faujasite, graphene, adsorbent, templatefree growth
  • 出版物名称:   MICROPOROUS MESOPOROUS MATERIALS
  • ISSN:   1387-1811 EI 1873-3093
  • 通讯作者地址:   Univ Minnesota
  • 被引频次:   1
  • DOI:   10.1016/j.micromeso.2018.04.034
  • 出版年:   2018

▎ 摘  要

Template-free synthesis of faujasite type zeolite was investigated in the presence of graphene oxide (GO) in the synthesis sol. Nano-sized FAU/EMT, nano-sized FAU, and micro-sized FAU can be obtained depending on synthesis conditions such as precursor molar ratios, crystallization temperature, and the use of freeze-drying to alter water content. The obtained GO/Faujasite powder was shaped in the form of a disk by vacuum filtration. The shaped GO/Faujasite powder is electrically conductive (similar to 0.4 S/m & 2000-3000 Omega/sq), mechanically stable (Young's modulus: similar to 7 MPa) and contains micropores, mesopores, and macropores. Furthermore, the GO/Faujasite disk exhibits high methylene blue adsorption capacity and can be regenerated by thermal annealing at 300 degrees C without significant capacity loss.