Physico-chemical and catalytic properties of Ru-MCM-41 mesoporous molecular sieve catalyst: Influence of Ru modification methods

N. Kumar, P. Mäki-Arvela, J. Hajek, T. Salmi, D. Yu Murzin*, T. Heikkilä, E. Laine, P. Laukkanen, J. Väyrynen

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

31 Sitaatiot (Scopus)

Abstrakti

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.

AlkuperäiskieliEnglanti
Sivut173-179
Sivumäärä7
JulkaisuMicroporous and Mesoporous Materials
Vuosikerta69
Numero3
DOI - pysyväislinkit
TilaJulkaistu - 22 huhtikuuta 2004
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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