Insight into the stability of binuclear Ir-La catalysts for efficient heterogeneous methanol carbonylation
文献类型：期刊论文
| 作者 | Feng, SQ; Lin, XS; Song, XG; Liu, Y; Jiang, Z; Ding, YJ |
| 刊名 | JOURNAL OF CATALYSIS
 |
| 出版日期 | 2019 |
| 卷号 | 377页码:400-408 |
| 关键词 | SINGLE GRAPHENE OXIDATION CLUSTERS ATOMS |
| ISSN号 | 0021-9517 |
| DOI | 10.1016/j.jcat.2019.06.050 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Heterogeneous single-site catalysts are ideal alternatives to their homogenous counterparts. Methanol carbonylation to produce acetic acid is a typical homogeneous catalytic process. Here, we investigate the stability of a heterogeneous single-site catalyst for vapor methanol carbonylation constituted by an lr-La binuclear complex on activated carbon (lr(1)-La-1/AC). Through the structure of the binuclear complex on the lr(1)-La-1/AC catalyst, the La promoter could protect the Ir+. species from reduction by H-2, favor the single-atom dispersion of Ir metal, and also increase the reaction rate of methanol carbonylation. Furthermore, the apparent activation energy of the lr(1)-La-1/AC catalyst was 12.2 kJ/mol lower than that of the lr(1)/AC catalyst. A density functional theory calculation showed that reductive elimination of acetyl iodide was the rate-determining step for the lr(1)/AC catalyst, leading to a severe carbon deposition problem, while CO migration insertion was believed to be the rate-determining step on the lr(1)-La-1/AC catalyst, which can reduce the carbon deposition to a great extent. (C) 2019 Elsevier Inc. All rights reserved. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32102]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China; 3.Jiaxing Univ, Sch Mat & Text Engn, Jiaxing 314001, Zhejiang, Peoples R China; 4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China; 5.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 | Feng, SQ,Lin, XS,Song, XG,et al. Insight into the stability of binuclear Ir-La catalysts for efficient heterogeneous methanol carbonylation[J]. JOURNAL OF CATALYSIS,2019,377:400-408. |
| APA | Feng, SQ,Lin, XS,Song, XG,Liu, Y,Jiang, Z,&Ding, YJ.(2019).Insight into the stability of binuclear Ir-La catalysts for efficient heterogeneous methanol carbonylation.JOURNAL OF CATALYSIS,377,400-408. |
| MLA | Feng, SQ,et al."Insight into the stability of binuclear Ir-La catalysts for efficient heterogeneous methanol carbonylation".JOURNAL OF CATALYSIS 377(2019):400-408. |
入库方式： OAI收割
来源：上海应用物理研究所
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