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Interstitial modification of palladium nanoparticles with boron atoms as a green catalyst for selective hydrogenation.
Chan, Chun Wong Aaron; Mahadi, Abdul Hanif; Li, Molly Meng-Jung; Corbos, Elena Cristina; Tang, Chiu; Jones, Glenn; Kuo, Winson Chun Hsin; Cookson, James; Brown, Christopher Michael; Bishop, Peter Trenton; Tsang, Shik Chi Edman.
Afiliación
  • Chan CW; Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford OX1 3QR, UK.
  • Mahadi AH; Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford OX1 3QR, UK.
  • Li MM; Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford OX1 3QR, UK.
  • Corbos EC; Johnson Matthey Technology Centre, Blount's Court, Sonning Common, Reading RG4 9NH, UK.
  • Tang C; Diamond Light Source Ltd, Harwell Science and Innovation Campus, Chilton OX11 0DE, UK.
  • Jones G; 1] Johnson Matthey Technology Centre, Blount's Court, Sonning Common, Reading RG4 9NH, UK [2] Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.
  • Kuo WC; Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.
  • Cookson J; Johnson Matthey Technology Centre, Blount's Court, Sonning Common, Reading RG4 9NH, UK.
  • Brown CM; Johnson Matthey Technology Centre, Blount's Court, Sonning Common, Reading RG4 9NH, UK.
  • Bishop PT; Johnson Matthey Technology Centre, Blount's Court, Sonning Common, Reading RG4 9NH, UK.
  • Tsang SC; Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford OX1 3QR, UK.
Nat Commun ; 5: 5787, 2014 Dec 19.
Article en En | MEDLINE | ID: mdl-25523894
Lindlar catalysts comprising of palladium/calcium carbonate modified with lead acetate and quinoline are widely employed industrially for the partial hydrogenation of alkynes. However, their use is restricted, particularly for food, cosmetic and drug manufacture, due to the extremely toxic nature of lead, and the risk of its leaching from catalyst surface. In addition, the catalysts also exhibit poor selectivities in a number of cases. Here we report that a non-surface modification of palladium gives rise to the formation of an ultra-selective nanocatalyst. Boron atoms are found to take residence in palladium interstitial lattice sites with good chemical and thermal stability. This is favoured due to a strong host-guest electronic interaction when supported palladium nanoparticles are treated with a borane tetrahydrofuran solution. The adsorptive properties of palladium are modified by the subsurface boron atoms and display ultra-selectivity in a number of challenging alkyne hydrogenation reactions, which outclass the performance of Lindlar catalysts.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2014 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2014 Tipo del documento: Article Pais de publicación: Reino Unido