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首页> 外文期刊>ChemSusChem >Efficient Aerobic Oxidation of Glucose to Gluconic Acid over Activated Carbon-Supported Gold Clusters
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Efficient Aerobic Oxidation of Glucose to Gluconic Acid over Activated Carbon-Supported Gold Clusters

机译：高效的有氧氧化在活性炭支撑的金簇上的葡萄糖葡萄糖氧化

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摘要

The catalytic performance of the atomically precise gold cluster-Au-38(PET)(24) (PET=2-phenylethanethiolate), immobilized on activated carbon (AC), was investigated for the aerobic oxidation of glucose to gluconic acid. The Au-38(PET)(24)/AC-120 catalysts, annealed at 120 degrees C in air, exhibited high catalytic activity and significantly better performance than the corresponding catalysts Au-38/AC-150 and Au-38/AC-300 (treated at 150 and 300 degrees C to remove the protecting thiolate ligands). The high activity of the robust Au cluster was a result of the partial ligand removal, providing catalytically active sites, which were evidenced by TEM, X-ray photoelectron spectroscopy, thermogravimetric analysis, and Fourier-transform IR spectroscopy. Au-38(PET)(24)/AC-120 also showed excellent recyclability (up to seven cycles). The turnover frequency for the Au-38(PET)(24)/AC-120 catalyst was 5440h(-1), which is higher than for the Pd/AC, Pd-Bi/AC, and Au/AC under identical reaction conditions. This new ultra-small gold nanomaterial is expected to find wide application in other catalytic oxidations.
机译：研究了原子上精确的金簇-Au-38（PET）（24）（PET = 2-苯基乙烯基乙烯酸乙酯）的催化性能，以固定在活性炭（AC）上，用于葡萄糖的有氧氧化葡萄糖。 Au-38（PET）（24）/ AC-120催化剂在空气中的120℃下退火，表现出高催化活性，并且比相应的催化剂AU-38 / AC-150和Au-38 / Ac-显着更好的性能。 300（在150和300℃处理以除去保护硫醇酸酯配体）。鲁棒AU簇的高活性是分解配体去除的结果，提供催化活性位点，其通过TEM，X射线光电子能谱，热重分析和傅立叶变换IR光谱证明。 AU-38（PET）（24）/ AC-120还显示出优异的可回收性（最多七个循环）。 AU-38（PET）（24）/ AC-120催化剂的周转频率为5440H（-1），其高于Pd / Ac，Pd-Bi / Ac和相同的反应条件下的Au / Ac 。这种新的超小型金纳米材料预计将在其他催化氧化中找到广泛的应用。

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  • 来源
    《ChemSusChem》 |2017年第9期|共5页
  • 作者

    Liu Chao; Zhang Junying; Huang Jiahui; Zhang Chaolei; Hong Feng; Zhou Yang; Li Gao; Haruta Masatake;

  • 作者单位

    Chinese Acad Sci Dalian Inst Chem Phys State Key Lab Catalysis Gold Catalysis Res Ctr Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys State Key Lab Catalysis Gold Catalysis Res Ctr Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys State Key Lab Catalysis Gold Catalysis Res Ctr Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys State Key Lab Catalysis Gold Catalysis Res Ctr Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys State Key Lab Catalysis Gold Catalysis Res Ctr Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys State Key Lab Catalysis Gold Catalysis Res Ctr Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys State Key Lab Catalysis Gold Catalysis Res Ctr Dalian 116023 Peoples R China;

    Chinese Acad Sci Dalian Inst Chem Phys State Key Lab Catalysis Gold Catalysis Res Ctr Dalian 116023 Peoples R China;

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

    aerobic oxidation; clusters; gluconic acid; glucose; gold;

    机译：有氧氧化;簇;葡萄糖;葡萄糖;金;

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