Journal article
Highly Efficient Ultralow Pd Loading Supported on MAX Phases for Chemoselective Hydrogenation
ACS catalysis, v 10(10), pp 5899-5908
15 May 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Palladium is one of the most efficient metals for the hydrogenation of organic compounds. However, when molecules, such as nitroaromatics, with several reducible functionalities, are hydrogenated, Pd, like any other very active metal, such as nickel or platinum, often behaves unselectively. One strategy to render Pd more selective is to choose the proper support. Herein, we show that MAX phase powders of Ti3SiC2, Ti2AlC, or Ti3AlC2 can chemoselectively hydrogenate 4-nitrostyrene to 4-aminostyrene, with 100% selectivity, at around 3-4% conversion. To boost the latter, we loaded Ti3SiC2 with 0.0005 wt % Pd and increased the conversion to 100% while maintaining the 4-AS selectivity at >90%. By optimizing the Pd loading, we were also able to increase the turnover frequency 100-fold relative to previous literature results. The identification of this highly efficient and chemoselective system has broad implications for the design of cost-effective, earth-abundant, nontoxic, metal catalysts, with ultralow noble metal loadings.
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Details
- Title
- Highly Efficient Ultralow Pd Loading Supported on MAX Phases for Chemoselective Hydrogenation
- Creators
- Mihaela M. Trandafir - National Institute of Materials PhysicsFlorentina Neatu - National Institute of Materials PhysicsIuliana M. Chirica - University of BucharestStefan Neatu - National Institute of Materials PhysicsAndrei C. Kuncser - National Institute of Materials PhysicsElena Cucolea - Research Center for Instrumental Analysis SCIENT, Petre Ispirescu Street, no. 1, 077167 Tancabesti, Ilfov, RomaniaVarun Natu - Drexel UniversityMichel W. Barsoum - Drexel UniversityMihaela Florea - National Institute of Materials Physics
- Publication Details
- ACS catalysis, v 10(10), pp 5899-5908
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 10
- Grant note
- DMR 1740795 / NSF; National Science Foundation (NSF) PN-III-P1.1-TE-2016-2116 / Ministry of Research and Innovation, CNCS-UEFISCDI; Consiliul National al Cercetarii Stiintifice (CNCS); Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii (UEFISCDI) 21N/2019 / Romanian Ministry of Research and Innovation; Ministry of Research, Innovation and Digitization - Romania 111/2019 / Romanian National Authority for Scientific Research and Innovation, CCCDI-UEFISCDI, ERANET-M.-CATALEAST-1, within PNCDI III; Consiliul National al Cercetarii Stiintifice (CNCS); Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii (UEFISCDI)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000535291500053
- Scopus ID
- 2-s2.0-85085942256
- Other Identifier
- 991019167985704721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical