TY - JOUR
T1 - Solvent effects in the hydrogenation of 2-butanone
AU - Akpa, B.S.
AU - D'Agostino, C.
AU - Gladden, L.F.
AU - Hindle, K.
AU - Manyar, H.
AU - McGregor, J.
AU - Li, R.
AU - Neurock, M.
AU - Sinha, N.
AU - Stitt, E.H.
AU - Weber, D.
AU - Zeitler, J.A.
AU - Rooney, David
PY - 2012/5/1
Y1 - 2012/5/1
N2 - In liquid-phase reaction systems, the role of the solvent is often limited to the simple requirement of dissolving and/or diluting substrates. However, the correct choice, either pure or mixed, can significantly influence both reaction rate and selectivity. For multi-phase heterogeneously catalysed reactions observed variations may be due to changes in mass transfer rates, reaction mechanism, reaction kinetics, adsorption properties and combinations thereof. The liquid-phase hydrogenation of 2-butanone to 2-butanol over a Ru/SiO catalyst, for example, shows such complex rate behaviour when varying water/isopropyl alcohol (IPA) solvent ratios. In this paper, we outline a strategy which combines measured rate data with physical property measurements and molecular simulation in order to gain a more fundamental understanding of mixed solvent effects for this heterogeneously catalysed reaction. By combining these techniques, the observed complex behaviour of rate against water fraction is shown to be a combination of both mass transfer and chemical effects. © 2012 Elsevier Inc. All rights reserved.
AB - In liquid-phase reaction systems, the role of the solvent is often limited to the simple requirement of dissolving and/or diluting substrates. However, the correct choice, either pure or mixed, can significantly influence both reaction rate and selectivity. For multi-phase heterogeneously catalysed reactions observed variations may be due to changes in mass transfer rates, reaction mechanism, reaction kinetics, adsorption properties and combinations thereof. The liquid-phase hydrogenation of 2-butanone to 2-butanol over a Ru/SiO catalyst, for example, shows such complex rate behaviour when varying water/isopropyl alcohol (IPA) solvent ratios. In this paper, we outline a strategy which combines measured rate data with physical property measurements and molecular simulation in order to gain a more fundamental understanding of mixed solvent effects for this heterogeneously catalysed reaction. By combining these techniques, the observed complex behaviour of rate against water fraction is shown to be a combination of both mass transfer and chemical effects. © 2012 Elsevier Inc. All rights reserved.
UR - http://www.scopus.com/inward/record.url?partnerID=yv4JPVwI&eid=2-s2.0-84859762148&md5=1895bbb2b8979d25ea4388ebfd48a4f5
U2 - 10.1016/j.jcat.2012.01.011
DO - 10.1016/j.jcat.2012.01.011
M3 - Article
SN - 0021-9517
VL - 289
SP - 30
EP - 41
JO - Journal of Catalysis
JF - Journal of Catalysis
IS - null
ER -