TY - JOUR
T1 - Physico-chemical and catalytic properties of Ru-MCM-41 mesoporous molecular sieve catalyst
T2 - Influence of Ru modification methods
AU - Kumar, N.
AU - Mäki-Arvela, P.
AU - Hajek, J.
AU - Salmi, T.
AU - Murzin, D. Yu
AU - Heikkilä, T.
AU - Laine, E.
AU - Laukkanen, P.
AU - Väyrynen, J.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2004/4/22
Y1 - 2004/4/22
N2 - The MCM-41 mesoporous molecular sieve was modified with Ru using in-situ synthesis, ion-exchange and impregnation catalyst preparation methods. The physico-chemical properties of the Ru-MCM-41 synthesized catalysts were studied using characterisation techniques such as X-ray powder diffraction, scanning electron microscopy, energy dispersive X-ray micro-analysis, X-ray fluorescence, XPS and nitrogen adsorption. The hydrogenation of cinnamaldehyde was used as a test reaction to evaluate the catalytic properties of the Ru-MCM-41 catalysts. The in-situ synthesis, ion-exchange and impregnation methods used for the introduction of Ru did not influence the parent structure and phase purity of the MCM-41 mesoporous molecular sieve under suitable designed synthesis conditions. At the same time the method of Ru introduction in MCM-41 was found to influence the physico-chemical and catalytic properties. The Ru-MCM-41 catalyst synthesized using in-situ synthesis resulted in the largest Ru crystallite size, which provided highest selectivity to the desired product cinnamyl alcohol and lowest conversion of cinnamaldehyde in the hydrogenation. The Ru-MCM-41 catalyst prepared by impregnation showed sintering of Ru particles, and lower selectivity to cinnamyl alcohol than the in-situ synthesized Ru-MCM-41 catalyst. The Ru-MCM-41 mesoporous molecular sieve catalyst prepared by ion-exchange showed the highest conversion of cinnamaldehyde, however formation of cinnamyl alcohol was not observed.
AB - The MCM-41 mesoporous molecular sieve was modified with Ru using in-situ synthesis, ion-exchange and impregnation catalyst preparation methods. The physico-chemical properties of the Ru-MCM-41 synthesized catalysts were studied using characterisation techniques such as X-ray powder diffraction, scanning electron microscopy, energy dispersive X-ray micro-analysis, X-ray fluorescence, XPS and nitrogen adsorption. The hydrogenation of cinnamaldehyde was used as a test reaction to evaluate the catalytic properties of the Ru-MCM-41 catalysts. The in-situ synthesis, ion-exchange and impregnation methods used for the introduction of Ru did not influence the parent structure and phase purity of the MCM-41 mesoporous molecular sieve under suitable designed synthesis conditions. At the same time the method of Ru introduction in MCM-41 was found to influence the physico-chemical and catalytic properties. The Ru-MCM-41 catalyst synthesized using in-situ synthesis resulted in the largest Ru crystallite size, which provided highest selectivity to the desired product cinnamyl alcohol and lowest conversion of cinnamaldehyde in the hydrogenation. The Ru-MCM-41 catalyst prepared by impregnation showed sintering of Ru particles, and lower selectivity to cinnamyl alcohol than the in-situ synthesized Ru-MCM-41 catalyst. The Ru-MCM-41 mesoporous molecular sieve catalyst prepared by ion-exchange showed the highest conversion of cinnamaldehyde, however formation of cinnamyl alcohol was not observed.
KW - Catalyst synthesis
KW - Cinnamaldehyde hydrogenation
KW - MCM-41
KW - Mesoporous molecular sieve
KW - Physico- chemical properties
KW - Ruthenium
UR - http://www.scopus.com/inward/record.url?scp=2342591457&partnerID=8YFLogxK
U2 - 10.1016/j.micromeso.2004.02.008
DO - 10.1016/j.micromeso.2004.02.008
M3 - Article
AN - SCOPUS:2342591457
SN - 1387-1811
VL - 69
SP - 173
EP - 179
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
IS - 3
ER -