Towards the "Pressure and Materials Gap”: Hydrogenation of Acrolein Using Silver Catalysts

Verfasser / Beitragende:
[M. Bron, E. Kondratenko, A. Trunschke, P. Claus]
Ort, Verlag, Jahr:
2004
Enthalten in:
Zeitschrift für Physikalische Chemie/International journal of research in physical chemistry and chemical physics, 218/4/2004(2004-04-01), 405-424
Format:
Artikel (online)
ID: 378913603
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024 7 0 |a 10.1524/zpch.218.4.405.29204  |2 doi 
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245 0 0 |a Towards the "Pressure and Materials Gap”: Hydrogenation of Acrolein Using Silver Catalysts  |h [Elektronische Daten]  |c [M. Bron, E. Kondratenko, A. Trunschke, P. Claus] 
520 3 |a The hydrogenation of acrolein has been studied over various Ag/SiO2 catalysts in a pressure range from 50mbar to 20bar. Increasing partial pressures of acrolein and/or hydrogen lead to increasing selectivities of allyl alcohol. The selectivity towards allyl alcohol also depends on the structural features of the Ag/SiO2 catalyst. Larger particles seem to favour the production of propanal. This observation is discussed in view of the different plane-to-edge-ratio of the different catalysts. The interaction of hydrogen with silver samples has been studied with TAP at very low pressures as well as with calorimetry at ambient pressures. Both methods indicate, that also the hydrogen adsorption is structure-sensitive. No interaction of hydrogen with electrolytic silver or the support material alone was observed. IR spectroscopy has been used to elucidate the interaction of acrolein with Ag/SiO2 catalysts. A strong interaction with the support material was found, hindering the observation of probable silver-acrolein interaction. 
540 |a © 2004 Oldenbourg Wissenschaftsverlag GmbH 
690 7 |a Thermodynamics & statistical physics  |2 nationallicence 
690 7 |a Laboratory techniques, experiments  |2 nationallicence 
690 7 |a Physical chemistry  |2 nationallicence 
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700 1 |a Kondratenko  |D E.  |4 aut 
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700 1 |a Claus  |D P.  |4 aut 
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