Nickel-Tin Nanoalloy supported ZnO Catalysts from Mixed-Metal Zeolitic Imidazolate Frameworks for Selective Conversion of Glycerol to 1,2-Propanediol

• 발행기관: 한국환경에너지공학회
• 저자명: Ajaysing S. Nimbalkar Young Kyu Hwang
• 간행물 정보: 『한국환경에너지공학회 학술대회지』2023년 추계학술발표회, 409~409쪽, 전체 1쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2023.12.07

국문 초록

The successful synthesis of finely tuned Nil.5Sn nanoalloy phases containing ZnO catalyst with a small particle size (6.7 run) from a mixed-metal zeolitic iinidazolate framework (MM-ZIF) is investigated. The catalyst was evaluated for the efficient production of 1,2-propanediol Cl,2-PDO) from crude glycerol and comprehensively charactertzed 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/moD 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 Nil.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.

키워드

zeolitic imidazolate framework Ni-Sn nanoalloy glycerol 1,2-propanediol hydrogenolysis