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Preparing acid-resistant Ru-based catalysts by carbothermal reduction for hydrogenation of itaconic acid

机译：用碳酸氢溶解的汽油还原制备耐酸的Ru基催化剂

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摘要

Catalytic conversion and application of bio-based platform chemicals is of great significance. Itaconic acid, one of the abundant and renewable bio-based platform chemicals, could be hydrogenated to produce methylsuccinic acid, which has important applications in pharmaceutical synthesis. Traditional catalysts can be corroded, leached and deactivated in an acid reaction environment, and the stability of the catalysts is a great challenge. Carbothermal reduction was employed to prepare stable ruthenium-based catalysts, and the results confirmed that CO generated in situ functioned as an efficient reducing species in the carbothermal reduction process. The catalysts were applied for the hydrogenation of itaconic acid, and showed good stability and resistance to acid with no obvious loss of activity and less leaching in recycling tests compared to hydrogen reduced samples which exhibited an apparent decrease of 22% for the conversion of itaconic acid. The carbothermal reduced catalysts could maintain 99% conversion and 99% selectivity for methylsuccinic acid, and maintained good stability and acid-resistance under a higher temperature and longer reaction time.
机译：生物基平台化学品的催化转化和应用具有重要意义。衣康酸，一种丰富和可再生的生物的平台化学品之一，可以氢化以生产甲基琥珀酸，其在药物合成中具有重要应用。可以在酸反应环境中腐蚀，浸出和失活的传统催化剂，催化剂的稳定性是一个很大的挑战。使用碳热还原制备稳定的基于钌的催化剂，结果证实，原位产生的CO作为碳热还原过程中的有效还原物种。催化剂施加衣康酸的氢化，并表现出良好的稳定性和对酸性的耐酸，与氢气还原样品相比，再循环试验中没有明显的活性损失和较少的浸出，其表现出衣康酸转化的表观降低22％ 。碳热还原催化剂可维持99％的转化率和99％对甲基琥珀酸的选择性，并在更高温度和更长的反应时间下保持良好的稳定性和酸性抗性。

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  • 来源
    《RSC Advances》 |2015年第118期|共8页
  • 作者

    Huang Qianqian; Yu Weiqiang; Lu Rui; Lu Fang; Gao Jin; Miao Hong; Xu Jie;

  • 作者单位

    Chinese Acad Sci Dalian Inst Chem Phys Dalian Natl Lab Clean Energy State Key Lab Catalysis Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys Dalian Natl Lab Clean Energy State Key Lab Catalysis Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys Dalian Natl Lab Clean Energy State Key Lab Catalysis Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys Dalian Natl Lab Clean Energy State Key Lab Catalysis Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys Dalian Natl Lab Clean Energy State Key Lab Catalysis Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys Dalian Natl Lab Clean Energy State Key Lab Catalysis Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys Dalian Natl Lab Clean Energy State Key Lab Catalysis Dalian 116023 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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