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Ga-promoted CO insertion and C–C coupling on Co catalysts for the synthesis of ethanol and higher alcohols from syngas

  • [设施]:北京正负电子对撞机
  • [期刊/会议名称]:Journal of Catalysis
  • [摘要]:This work focuses on Ga promotion to Co sites in supported CoGa catalysts on CO insertion and C–C coupling in syngas conversion. The CoGa catalysts were developed in our group for syngas conversion; they possess uniform dispersion of CoGa particles and pseudo-homogeneous distribution of Co and Ga elements. The Ga atoms contiguous to Co atoms not only contributed to isolating Co centers but also donated electrons to neighboring Co sites. The isolated Co sites were responsible for linearly nondissociative CO adsorption, boosting the CO insertion step to afford alcohol products. Electronic donation from Ga to Co sites promoted dissociative CO adsorption, enhancing carbon-chain growth. The match of CO insertion and C–C coupling gave rise to both enhanced activity in the syngas conversion and impressive selectivity to ethanol and higher alcohols.
  • [发表日期]:2017
  • [第一作者]:安哲
  • [第一作者单位]:北京化工大学
  • [通讯作者]:何静
  • [通讯作者单位]:北京化工大学
  • [论文类型]:0
  • [期刊分类]:SCI1区
  • [学科分类]:工程学
  • [影响因子]:6.844
  • [关键词]:Supported CoGaSyngas conversionAlcoholsCarbon-chain growthCO insertion
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