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The decarbonization of coal tar via microwave-initiated catalytic deep dehydrogenation

机译：煤焦油通过微波引发催化深脱氢脱碳

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摘要

Coal tar, a major by-product of the coal industry, presents considerable difficulties in its refining and conversion into fuels due to its complex chemical composition and physical properties, such as high viscosity, corrosiveness, thermal instability, etc. Here we report a new route for producing hydrogen-rich gases together with carbonaceous materials, including carbon nanotubes, through the microwave-initiated catalytic deep dehydrogenation of coal tar using inexpensive iron catalysts. The resulting carbonaceous materials generated over the catalyst were investigated using a variety of techniques including scanning electron microscopy (SEM), transmission electron microscopy (TEM), temperature programmed oxidation (TPO) and Raman spectroscopy. Importantly, we have found that an aqueous emulsion feed of the coal tar enables considerably easier handling and an enhanced hydrogen production whilst also significantly reducing the extent of catalyst deactivation. This behaviour is shown to be assisted by the phenomenon of micro-explosion that enhances mass and heat transfer during the catalytic reactions.
机译：煤炭产业主要副产品，由于其复杂的化学成分和物理性质，如高粘度，腐蚀性，热不稳定性等，对燃料的精炼和转化为燃料具有相当大的困难。我们在这里报告一个新的通过使用廉价的铁催化剂，通过微波引发的催化深脱氢，与碳纳米管一起生产富含碳质材料的途径。使用各种技术研究了在催化剂上产生的碳质材料，包括扫描电子显微镜（SEM），透射电子显微镜（TEM），温度编程氧化（TPO）和拉曼光谱。重要的是，我们发现煤焦油的含水乳液饲料使得能够更容易地处理和增强的氢气产生，同时显着降低催化剂失活的程度。显示这种行为被微爆炸现象辅助，其在催化反应期间提高质量和热传递。

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  • 来源
    《Fuel》 |2020年第may15期|117332.1-117332.9|共9页
  • 作者

    Yan Yuqiang; Gonzalez-Cortes Sergio; Yao Benzhen; Jie Xiangyu; AlMegren Hamid; Cao Fahai; Dilworth Jon; Slocombe Daniel R.; Xiao Tiancun; Edwards Peter P.;

  • 作者单位

    East China Univ Sci & Technol Sch Chem Engn Shanghai 200237 Peoples R China|Univ Oxford Dept Chem Inorgan Chem Lab King Abdulaziz City Sci & Technol Oxford Ctr Exce Oxford OX1 3QR England;

    Univ Oxford Dept Chem Inorgan Chem Lab King Abdulaziz City Sci & Technol Oxford Ctr Exce Oxford OX1 3QR England;

    Univ Oxford Dept Chem Inorgan Chem Lab King Abdulaziz City Sci & Technol Oxford Ctr Exce Oxford OX1 3QR England;

    Univ Oxford Dept Chem Inorgan Chem Lab King Abdulaziz City Sci & Technol Oxford Ctr Exce Oxford OX1 3QR England;

    King Abdulaziz City Sci & Technol Mat Div POB 6086 Riyadh 11442 Saudi Arabia;

    East China Univ Sci & Technol Sch Chem Engn Shanghai 200237 Peoples R China;

    Univ Oxford Dept Chem Inorgan Chem Lab King Abdulaziz City Sci & Technol Oxford Ctr Exce Oxford OX1 3QR England;

    Cardiff Univ Sch Engn Queens Bldg Cardiff CF24 3AA Wales;

    Univ Oxford Dept Chem Inorgan Chem Lab King Abdulaziz City Sci & Technol Oxford Ctr Exce Oxford OX1 3QR England;

    Univ Oxford Dept Chem Inorgan Chem Lab King Abdulaziz City Sci & Technol Oxford Ctr Exce Oxford OX1 3QR England;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Coal tar; Dehydrogenation; Hydrogen; Microwave-initiated catalysis; Emulsion feed;

    机译：煤焦油;脱氢;氢;微波引发催化;乳液饲料;

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