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Nut-like MOF/hydroxylated graphene hybrid materials for adsorptive desulfurization of thiophene

机译：坚果样MOF /羟基化石墨烯杂种材料，用于噻吩的吸附脱硫

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摘要

Nowadays, sulfur compounds in fuel oils are the main source of environmental pollution and ultra-deep desulfurization of fuel oils has become a top priority. Many porous materials such as activated carbon and metal-organic frameworks (MOFs) have attracted attention in the field of adsorption desulfurization in recent years. A series of novel MOF/hydroxylated graphene hybrid materials were successfully designed and synthesized with different ratios for application in the field of ADS. The hydroxylated graphene (HG) was found dispersed not just on the surface but also inserted in the MOF crystals in what we call a nut-like structure. It was found that the introduction of a small amount (8%) of HG does not hinder the formation of the Cu-BTC structure. Meanwhile, the adsorption performances of these composites for thiophene from oils were evaluated using batch adsorption tests at room temperature. The synergistic effect between Cu-BTC and HG in the hybrid materials can improve the adsorption capacity for thiophene molecules. The experimental equilibrium curve fitted well with the theoretical Langmuir isotherm model. The maximum sulfur adsorption capacity of 35.6 mg S g(-1) for the hybrid materials was calculated using the Langmuir adsorption equation, which increased by 48% compared to parent Cu-BTC. Thus, these hybrid materials have great potential for application in the adsorptive desulfurization process, especially for thiophenic compounds.
机译：如今，燃料油中的硫化合物是环境污染的主要来源，燃料油的超深脱硫已成为最优先事项。许多多孔材料如活性炭和金属 - 有机框架（MOF）近年来吸附在吸附脱硫领域的注意力。成功设计了一系列新型MOF /羟基的石墨烯杂化材料和合成了不同比例的用于在广告领域应用。发现羟基化石墨烯（Hg）不仅在表面上分散，而且还在我们称之为螺母状结构的情况下插入MOF晶体中。发现引入少量（<8％）的Hg不会阻碍Cu-BTC结构的形成。同时，在室温下使用批量吸附试验评估这些复合材料的吸附性能来自油。杂化材料中Cu-BTC和Hg之间的协同效应可以提高噻吩分子的吸附能力。实验性均衡曲线与理论朗米尔等温模型很好。使用Langmuir吸附方程计算混合材料的35.6mg S G（-1）的最大硫吸附容量，与母体Cu-BTC相比，增加48％。因此，这些杂化材料具有巨大应用在吸附脱硫过程中，特别是对于噻吩化合物。

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  • 来源
    《RSC Advances》 |2018年第42期|共8页
  • 作者

    Yang Ke; Yan Yu; Chen Wen; Kang Hongtao; Han Yi; Zhang Wenquan; Fan Yafeng; Li Zhenxing;

  • 作者单位

    China Univ Petr State Key Lab Heavy Oil Proc Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Inst New Energy Beijing 102249 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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