Graphene oxide/mixed metal oxide hybrid materials for enhanced adsorption desulfurization of liquid hydrocarbon fuels

FUEL

卷:181

Article

Menzel, Robert^1,3  Iruretagoyena, Diana²  Wang, Yifan¹  Bawaked, Salem M.^4,5  Mokhtar, Mohamed^4,5  Al-Thabaiti, Shaeel A.^4,5  Basahel, Sulaiman N.^4,5  Shaffer, Milo S. P.¹ 

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AZ, England

[2] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn, London SW7 2AZ, England

[3] Bio Nano Consulting, Gridiron Bldg,One Pancras Sq, London N1C 4AG, England

[4] King Abdulaziz Univ, Fac Sci, Dept Chem, Jeddah, Saudi Arabia

[5] King Abdulaziz Univ, Surface Chem & Catalyt Studies Grp, Jeddah 21413, Saudi Arabia

关键词: Graphene oxide;    Mixed metal oxide;    Dibenzothiophene;    Adsorption;    Desulfurization;   

DOI  :  10.1016/j.fuel.2016.04.125

来源: Elsevier

【 摘 要 】

A series of mixed metal oxides (MMOs) adsorbents (MgAl-, CuAl-and CoAl-MMOs) were supported on graphene oxide (GO) through in-situ precipitation of layered double hydroxides (LDHs) onto exfoliated GO, followed by thermal conversion. The study shows that GO is an excellent support for the LDH-derived MMOs due to matching geometry and charge complementarity, resulting in a strong hybrid effect, evidenced by significantly enhanced adsorption performance for the commercially important removal of heavy thiophenic compounds from hydrocarbons. Fundamental liquid-phase adsorption characteristics of the MMO/GO hybrids are quantified in terms of adsorption equilibrium isotherms, selectivity and adsorbent regenerability. Upon incorporation of as little as 5 wt% GO into the MMO material, the organosulfur uptake was increased by up to 170%, the recycling stability was markedly improved and pronounced selectivity for thiophenic organosulfurs over sulfur-free aromatic hydrocarbons was observed. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

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