Insight into the efficient oxidation of methyl-ethyl-ketone over hierarchically micro-mesostructured Pt/K-(Al)SiO2 nanorod catalysts: Structure-activity relationships and mechanism
文献类型：期刊论文
| 作者 | Dummer, Nicholas F.; Jiang, Zeyu; Taylor, Stuart H.; Ma, Mudi; Shen, Zhenxing; Hao, Zhengping; Ma, Chunyan ; Tian, Mingjiao; Shi, Jianwen; He, Chi
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| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2018-06-15 |
| 卷号 | 226页码:220-233 |
| 关键词 | Monodispersed Pt sites Al-K decorated silica Methyl-ethyl-ketone Catalytic oxidation Activation mechanism |
| ISSN号 | 0926-3373 |
| 文献子类 | Article |
| 英文摘要 | Hierarchically micro-mesostructured Pt/K-Al-SiO2 catalysts with regular nanorod (Pt/KA-NRS) and spherical nanoflower-like (Pt/KA-SNFS) morphologies were prepared. The existence of Al atoms generates Bronsted acid sites and reduces silanol groups over the supports, promoting the dispersion of Pt nanoparticles and stability of catalysts. Potassium atoms balance the negative charge of supports and enhance O-2 mobility. The Pt/KA-NRS catalysts exhibit unexceptionable low temperature activity, CO2 selectivity, and stability for MEK oxidation. Amongst, 0.27 wt.% Pt/KA-NRS completely converts MEK at just 170 degrees C (activation energy as low as 37.22 kJ.mol(-1)), more than 100 degrees C lower than other typical Pt/Pd supported catalysts reported in the literature. Diacetyl and 2,3-butandiol are the main intermediates during MEK activation, which convert into H2O and CO2 through aldehydes and acids. The excellent catalytic activity of Pt/KA-NRS is ascribed to their regular morphology, high Pt content and dispersion, excellent MEK adsorption capacity and superior O-2/CO2 desorption capability under low temperature. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/41094]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 推荐引用方式 GB/T 7714 | Dummer, Nicholas F.,Jiang, Zeyu,Taylor, Stuart H.,et al. Insight into the efficient oxidation of methyl-ethyl-ketone over hierarchically micro-mesostructured Pt/K-(Al)SiO2 nanorod catalysts: Structure-activity relationships and mechanism[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2018,226:220-233. |
| APA | Dummer, Nicholas F..,Jiang, Zeyu.,Taylor, Stuart H..,Ma, Mudi.,Shen, Zhenxing.,...&He, Chi.(2018).Insight into the efficient oxidation of methyl-ethyl-ketone over hierarchically micro-mesostructured Pt/K-(Al)SiO2 nanorod catalysts: Structure-activity relationships and mechanism.APPLIED CATALYSIS B-ENVIRONMENTAL,226,220-233. |
| MLA | Dummer, Nicholas F.,et al."Insight into the efficient oxidation of methyl-ethyl-ketone over hierarchically micro-mesostructured Pt/K-(Al)SiO2 nanorod catalysts: Structure-activity relationships and mechanism".APPLIED CATALYSIS B-ENVIRONMENTAL 226(2018):220-233. |
入库方式： OAI收割
来源：生态环境研究中心
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