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  Palladium Catalysts Supported on N-functionalized Hollow Vapour-Grown Carbon Nanofibers: The Effect of the Basic Support and Catalyst Reduction Temperature

Sahin, S., Mäki-Arvela, P., Tessonnier, J.-P., Villa, A., Reiche, S., Wrabetz, S., et al. (2011). Palladium Catalysts Supported on N-functionalized Hollow Vapour-Grown Carbon Nanofibers: The Effect of the Basic Support and Catalyst Reduction Temperature. Applied Catalysis A, 408(1-3), 137-147. doi:10.1016/j.apcata.2011.09.017.

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 Creators:
Sahin, Serap1, Author
Mäki-Arvela, Päivi1, Author
Tessonnier, Jean-Philippe2, Author           
Villa, Alberto2, Author           
Reiche, Sylvia2, Author           
Wrabetz, Sabine2, Author           
Su, Dang Sheng2, Author           
Schlögl, Robert2, Author           
Salmi, Tapio1, Author
Murzin, Dimitri Yu.1, Author
Affiliations:
1Process Chemistry Centre, Åbo Akademi University, Turku, FI-20500, Finland, ou_persistent22              
2Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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Free keywords: N-functionalized hollow vapour-grown carbon nanofiber; cascade synthesis; immobilized lipase;
 Abstract: The synthesis of (R)-1-phenylethyl acetate starting from acetophenone was investigated in this work. The first step consisted in the selective catalytic hydrogenation of acetophenone to form racemic 1-phenylethanol over a heterogeneous metal catalyst, Pd supported on N-functionalized vapour-grown carbon nanofibers (N-VGCFs), at 70 oC under atmospheric hydrogen pressure in toluene. The acylation of the formed racemic 1-phenylethanol was subsequently performed over an immobilized lipase in the same reaction pot. The main parameters investigated in this work were the role of the basic N-VGCF supports as well as the reduction procedure of the supported Pd catalysts (Pd-N-VGCF). The basic N-VGCF supports were synthesized by post-treating oxidized VGCFs in gaseous NH3 at high temperature (ammonolysis) prior to Pd addition by sol immobilization. The catalysts were characterized by nitrogen adsorption, hydrogen temperature programmed desorption, adsorption microcalorimetry and by SEM and TEM. The results revealed that the catalytic activity of the Pd-N-VGCF catalysts was highly dependent on the reduction procedure. The highest desired product yield, 35 %, was obtained over a Pd-N-VGCF catalyst when the support was treated at 400oC with gaseous ammonia prior to Pd addition.

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Language(s): eng - English
 Dates: 2011-09-192011-11-28
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.apcata.2011.09.017
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Title: Applied Catalysis A
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 408 (1-3) Sequence Number: - Start / End Page: 137 - 147 Identifier: ISSN: 0926-860X
CoNE: https://pure.mpg.de/cone/journals/resource/954925567761_1