Efficient base-free direct oxidation of glucose to gluconic acid over TiO2-supported gold clusters
文献类型：期刊论文
| 作者 | Guo, Song; Fang, Qihua; Li, Zhimin; Zhang, Jia; Zhang, Junying; Li, Gao |
| 刊名 | NANOSCALE
 |
| 出版日期 | 2019-01-21 |
| 卷号 | 11期号:3页码:1326-1334 |
| ISSN号 | 2040-3364 |
| DOI | 10.1039/c8nr08143c |
| 通讯作者 | Li, Gao(gaoli@dicp.ac.cn) |
| 英文摘要 | The transformation of renewable natural resources is an appealing and sustainable protocol to minimize fossil fuel consumption. Here, a simple incipient wetness protocol is developed to prepare ultrasmall gold clusters, immobilized on TiO2 (particle size: 1.2-1.7 nm), using anthranilic acid as a stabilizing agent. The Au clusters can be reduced to metallic Au-0 (Au/TH-150 and Au/TH-200) during 150 and 200 degrees C annealing in the presence of H-2 gas, while the Au clusters are converted to Au+ species in air at 200 and 500 degrees C (Au/TA-200 and Au/TA-500), a conclusion supported by XPS and low-temperature (-150 degrees C) Operando-DRIFTS analysis. Au/TA-200 and Au/TA-500 showed inactivity in the base-free direct oxidation of glucose. For comparison, Au/TH-150 and Au/TH-200 exhibited salient catalytic performance (87-92% conversion and 95-97% selectivity for gluconic acid), revealing that glucose oxidation occurs preferentially on the Au-0 species. The turnover frequency (TOF) of Au/TH-150 reaches 1908 mol(reacted glucose) mol(Au)(-1) h(-1), which is much higher than that of commercial Pd-Bi/C under alkaline conditions (TOF: 1298 mol(reacted glucose) mol(Pd)(-1) h(-1), pH 9.5). The apparent activation energies are 37 (over Au/TH-150) and 47 kJ mol(-1) (Au/TH-200), comparable to the unsupported Au colloids, indicating that the oxidation should occur at the Au surface rather than at the perimeter interface between the Au clusters and the supports. |
| WOS关键词 | LONG-TERM STABILITY ; SELECTIVE OXIDATION ; AEROBIC OXIDATION ; CO OXIDATION ; CATALYTIC-ACTIVITY ; BISMUTH ; NANOPARTICLES ; ACTIVATION ; CONVERSION ; CHEMISTRY |
| 资助项目 | National Natural Science Foundations of China[21606223] ; Shanxi Province Hundred Talent Project |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000460162900053 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | National Natural Science Foundations of China ; National Natural Science Foundations of China ; Shanxi Province Hundred Talent Project ; Shanxi Province Hundred Talent Project ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; Shanxi Province Hundred Talent Project ; Shanxi Province Hundred Talent Project ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; Shanxi Province Hundred Talent Project ; Shanxi Province Hundred Talent Project ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; Shanxi Province Hundred Talent Project ; Shanxi Province Hundred Talent Project |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/165786]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Li, Gao |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Gold Catalysis Res Ctr, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Song,Fang, Qihua,Li, Zhimin,et al. Efficient base-free direct oxidation of glucose to gluconic acid over TiO2-supported gold clusters[J]. NANOSCALE,2019,11(3):1326-1334. |
| APA | Guo, Song,Fang, Qihua,Li, Zhimin,Zhang, Jia,Zhang, Junying,&Li, Gao.(2019).Efficient base-free direct oxidation of glucose to gluconic acid over TiO2-supported gold clusters.NANOSCALE,11(3),1326-1334. |
| MLA | Guo, Song,et al."Efficient base-free direct oxidation of glucose to gluconic acid over TiO2-supported gold clusters".NANOSCALE 11.3(2019):1326-1334. |
入库方式： OAI收割
来源：大连化学物理研究所
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