Enhancing regioselectivity via tuning the microenvironment in heterogeneous hydroformylation of olefins | |
Department | 羰基合成与选择氧化国家重点实验室(OSSO) |
Jing Zhang; Peng Sun; Guang Gao; Jia Wang; Zelun Zhao; Yaseen Muhammad; Li FW(李福伟) | |
The second department | 清洁催化与合成 |
2020-03 | |
Source Publication | Journal of Catalysis |
Volume | 387Issue:0Pages:196 |
Abstract | Regioselectivity is a key point in hydroformylation reactions and its control is still a challenge in heterogeneous catalysis. Here, we demonstrate that regioselectivity in heterogeneous hydroformylation can be steered by a surface microenvironment around Rh clusters, which are surrounded by K species and confined within silicate-1 zeolites. The K species create a steric hindrance microenvironment on the surfaces of Rh clusters and tune the electronic properties of Rh species, mimicking the Rh–phosphine molecular complex. This microenvironment benefits the linear adsorption of olefins, realizing 83% regioselectivity to linear butyraldehyde with TOF as high as 7328 h−1 in propylene hydroformylation. Other K species which reduce acidic sites can also inhibit the isomerization of long-chain olefins, thus boosting regioselectivity. The confinement structure can stabilize the Kx^Rh clusters to enhance the catalyst lifetime. This work provides an alternative route for developing selective heterogeneous catalysts through steering the catalyst surface microenvironment. |
Indexed By | SCI |
If | 7.888 |
Language | 英语 |
compositor | 第一作者单位 |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/27053 |
Collection | 羰基合成与选择氧化国家重点实验室(OSSO) |
Corresponding Author | Jing Zhang |
Affiliation | 中国科学院兰州化学物理研究所 |
Recommended Citation GB/T 7714 | Jing Zhang,Peng Sun,Guang Gao,et al. Enhancing regioselectivity via tuning the microenvironment in heterogeneous hydroformylation of olefins[J]. Journal of Catalysis,2020,387(0):196. |
APA | Jing Zhang.,Peng Sun.,Guang Gao.,Jia Wang.,Zelun Zhao.,...&Li FW.(2020).Enhancing regioselectivity via tuning the microenvironment in heterogeneous hydroformylation of olefins.Journal of Catalysis,387(0),196. |
MLA | Jing Zhang,et al."Enhancing regioselectivity via tuning the microenvironment in heterogeneous hydroformylation of olefins".Journal of Catalysis 387.0(2020):196. |
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