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Synthesis, Characterization, and Catalytic Properties of Pd and Pd–Ag Catalysts Supported on Nanocrystalline TiO2 Prepared by the Solvothermal Method

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Nanocrystalline titania have been prepared by thermal decomposition of titanium (IV) n-butoxide in two different solvents (toluene and 1,4-butanediol) at 320 °C and employed as supports for Pd and Pd–Ag catalysts for selective acetylene hydrogenation for the first time. The titania products obtained from both solvents were pure anatase phase with relatively the same crystallite sizes and BET surface areas. However, due to different crystallization pathways, the number of Ti3+ defective sites as shown by ESR results of the titania prepared in toluene was much higher than the ones prepared in 1,4-butanediol. It was found that the use of anatase titania with higher defective sites as a support for Pd catalysts resulted in lower activity and selectivity in selective acetylene hydrogenation. However, this effect was suppressed by Ag promotion.

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Authors and Affiliations

  1. Department of Chemical Engineering, Center of Excellence on Catalysis and Catalytic Reaction Engineering, Chulalongkorn University, Bangkok, 10330, Thailand

    Joongjai Panpranot, Lakkana Nakkararuang & Piyasan Praserthdam

  2. Department of Chemical Engineering, King Mongkut Institute of Technology, Ladkrabang, Bangkok, Thailand

    Bongkot Ngamsom

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  1. Joongjai Panpranot
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  2. Lakkana Nakkararuang
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  3. Bongkot Ngamsom
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  4. Piyasan Praserthdam
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Correspondence to Joongjai Panpranot.

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Panpranot, J., Nakkararuang, L., Ngamsom, B. et al. Synthesis, Characterization, and Catalytic Properties of Pd and Pd–Ag Catalysts Supported on Nanocrystalline TiO2 Prepared by the Solvothermal Method. Catal Lett 103, 53–58 (2005). https://doi.org/10.1007/s10562-005-6502-x

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  • DOI: https://doi.org/10.1007/s10562-005-6502-x

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