Methyl formate synthesis from methanol on titania supported copper catalyst under UV irradiation at ambient condition: Performance and mechanism
文献类型：期刊论文
| 作者 | Liu, Jie1; Han, Chenhui1; Yang, Xuzhuang1; Gao, Guanjun1; Shi, Quanquan2; Tong, Min1; Liang, Xiaoyuan1; Li, Changfu1 |
| 刊名 | JOURNAL OF CATALYSIS
 |
| 出版日期 | 2016 |
| 卷号 | 333页码:162-170 |
| 关键词 | Photocatalysis Methanol Methyl Formate Copper Catalyst Reaction Mechanism |
| ISSN号 | 0021-9517 |
| DOI | 10.1016/j.jcat.2015.11.005 |
| 文献子类 | Article |
| 英文摘要 | Selective oxidation of methanol to methyl formate (MF) with high MF formation rate and simple by-products at ambient conditions is a challenging process. Herein, we report the methyl formate synthesis from methanol on a titania supported copper catalyst in a flow reactor at 15-45 degrees C under UV irradiation. The MF formation rate reaches 56.4 mmol g(-1) h(-1). Carbon dioxide is the only by-product below 30 degrees C, and very small amount of dimethoxymethane besides carbon dioxide can be detected at 45 degrees C. CuO on titania in the as-prepared catalyst is reduced to Cu to form an Ohmic contact between Cu and titania during the reaction under UV irradiation, which facilitates the photo-excited electron transfer from the conduction band of titania to Cu and reduces the recombination of the photo-excited electron-hole pairs. The negative charge on the Cu surfaces promotes the dissociation of oxygen. The coordinated methoxy resulted from the dissociative chemisorption of methanol on the surface of titania is oxidized by the photo-generated holes to form coordinated surface formaldehyde. The oxygen dissociation and the oxidation of coordinated methoxy are parallel reactions, and both of them are rate-controlled by light intensity. This study may contribute to design new photocatalytic systems and provide an applicable green route to MF synthesis from methanol. (C) 2015 Elsevier Inc. All rights reserved. |
| WOS关键词 | X-RAY PHOTOELECTRON ; VISIBLE-LIGHT IRRADIATION ; H-2 PRODUCTION ; PHOTOCATALYTIC REDUCTION ; SELECTIVE OXIDATION ; WO3 PHOTOCATALYSTS ; GREEN CHEMISTRY ; OXIDE CATALYSTS ; GRAPHENE OXIDE ; WORK FUNCTION |
| WOS研究方向 | Chemistry ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000368568700016 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/171432]  |
| 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 | Yang, Xuzhuang |
| 作者单位 | 1.Inner Mongolia Univ, Sch Chem & Chem Engn, Hohhot 010021, Inner Mongolia, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jie,Han, Chenhui,Yang, Xuzhuang,et al. Methyl formate synthesis from methanol on titania supported copper catalyst under UV irradiation at ambient condition: Performance and mechanism[J]. JOURNAL OF CATALYSIS,2016,333:162-170. |
| APA | Liu, Jie.,Han, Chenhui.,Yang, Xuzhuang.,Gao, Guanjun.,Shi, Quanquan.,...&Li, Changfu.(2016).Methyl formate synthesis from methanol on titania supported copper catalyst under UV irradiation at ambient condition: Performance and mechanism.JOURNAL OF CATALYSIS,333,162-170. |
| MLA | Liu, Jie,et al."Methyl formate synthesis from methanol on titania supported copper catalyst under UV irradiation at ambient condition: Performance and mechanism".JOURNAL OF CATALYSIS 333(2016):162-170. |
入库方式： OAI收割
来源：大连化学物理研究所
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