期刊
ACS APPLIED NANO MATERIALS
卷 5, 期 10, 页码 14961-14969出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.2c03201
关键词
metal-organic frameworks; heterogeneous catalysis; acetylene dimerization; nanoparticle
资金
- Inorganometallic Catalyst Design Center, an Energy Frontiers Research Center (EFRC)-Department of Energy (DOE) , Office of Science, Basic Energy Sciences
- SHyNE Resource [DE-SC0012702]
- IIN [NSF ECCS-2025633]
- Northwestern's MRSEC program
- DOE [NSF DMR-1720139]
- US DOE, Office of Science, Office of Workforce Development for Teachers and Scientists, Office of Science Graduate Student Research (SCGSR) program [DE-SC0001329]
- Northwestern University
- [DE-SC0014664]
Metal-organic frameworks (MOFs) with well-defined structures are used as catalyst supports for confinement of metal nanoparticles. In this study, Cu and In catalysts were confined in the Zr-based MOF NU-907. The addition of indium as a promoter to the Cu catalyst resulted in increased production of 1,3-butadiene in the acetylene dimerization reaction.
Metal-organic frameworks (MOFs) are receiving increased attention due to their well-defined structures that allow the determination of structure-property relationships. MOFs have been used as heterogeneous catalyst supports in a variety of fashions including for confinement of metal nanoparticles, which have demonstrated enhanced resistance to aggregation, a common issue in amorphous metal oxide supports. Cu and In catalysts were installed in the Zr-based MOF NU-907, being confined within the nanoporous structure. The Cu catalyst is known to, under various conditions, either selectively hydrogenate acetylene to ethylene or generate C4 products such as butenes and 1,3-butadiene, an important feedstock for rubber and adhesives. The addition of indium to the Cu catalyst is intended to serve as a promoter to produce C4 products by decreasing the surface coverage of copper while still allowing for C-C coupling. When employed for acetylene dimerization, InCu-NU-907 shows slightly decreased C4 production overall but enhanced 1,3-butadiene production compared to all other catalysts studied herein. These catalysts were thoroughly characterized by a range of techniques to confirm structural integrity and porosity and probe the nature of the interactions of indium with the Cu nanoparticle active site.
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