• 文献标题:   Regenerable CuO/gamma-Al2O3-Reduced Graphene Oxide Adsorbent with a High Adsorption Capacity for Dibenzothiophene from Model Diesel Oil
  • 文献类型:   Article
  • 作  者:   MA HQ, SUN X, WANG MJ, ZHANG JS
  • 作者关键词:  
  • 出版物名称:   INDUSTRIAL ENGINEERING CHEMISTRY RESEARCH
  • ISSN:   0888-5885
  • 通讯作者地址:   Tianjin Univ
  • 被引频次:   2
  • DOI:   10.1021/acs.iecr.8b00407
  • 出版年:   2018

▎ 摘  要

This research focused on the removal of dibenzothiophene (DBT) from model diesel oil using CuO-loaded gamma-Al2O3-reduced graphene oxide (CuO/gamma-Al2O3-RGO) as an adsorbent, which possesses the highest adsorption capacity among reported regenerable graphene-related materials. The boehmite-RGO supports were synthesized using a one-pot hydrothermal synthesis method. As the RGO sheet surfaces are completely covered and isolated by boehmite nanorods formed via hydroxyl condensation of [Al(OH)(x)]((3-x)+) or Al(OH)(3) and the -OH of graphene oxide (GO), the specific surface area of boehmite-RGO increased to 378 m(2)/g, which is 20.8% higher than that of RGO (313 m(2)/g). CuO/gamma-Al2O3-RGO adsorbents with different CuO contents were prepared, and their DBT adsorption desulfurization properties were evaluated. With a 2% mass ratio of CuO to boehmite-RGO, CuO/gamma-Al2O3-RGO displays the highest DBT adsorption capacity (6.0 mg S/g) under ambient conditions, which improved by 53.8% in comparison with that of pure RGO (3.9 mg S/g). Moreover, the regeneration of the CuO/gamma-Al2O3-RGO adsorbent is much more practical than that of the pure RGO adsorbent.