沸石咪唑盐骨架
催化作用
化学工程
咪唑酯
锡
材料科学
镍
甘油
选择性
协同催化
化学
金属有机骨架
金属
无机化学
有机化学
吸附
工程类
作者
Ajaysing S. Nimbalkar,Kyung‐Ryul Oh,Sang Uk Han,Gwang-Nam Yun,Seung Hyeok,Pravin P. Upare,Ali Ismail Awad,Dong Won Hwang,Young Kyu Hwang
标识
DOI:10.1002/cssc.202301315
摘要
The successful synthesis of finely tuned Ni1.5Sn nanoalloy phases containing ZnO catalyst with a small particle size (6.7 nm) from a mixed‐metal zeolitic imidazolate framework (MM‐ZIF) is investigated. The catalyst was evaluated for the efficient production of 1,2‐propanediol (1,2‐PDO) from crude glycerol and comprehensively characterized using several analytical techniques. Among the catalysts, 3Ni1Sn/ZnO (Ni/Sn = 3/1) showed the best catalytic performance and produced the highest yield (94.2%) of 1,2‐PDO at ~100% conversion of glycerol; it also showed low apparent activation energy (15.4 kJ/mol) and excellent stability. The results demonstrated that the synergy between Ni‐Sn alloy, finely dispersed Ni metallic sites, and the Lewis acidity of SnOx species‐loaded ZnO played a pivotal role in the high activity and selectivity of the catalyst. The confirmation of acetol intermediate and theoretical calculations verify the Ni1.5Sn phases provide the least energetic pathway for the formation of 1,2‐PDO selectively. The reusability of solvent for successive ZIF synthesis, along with the excellent recyclability of the ZIF‐derived catalyst, enables an overall sustainable process. We believe that the present synthetic protocol that uses MM‐ZIF for the conversion of various biomass‐derived platform chemicals into valuable products can be applied to various nanoalloy preparations.
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