TY - JOUR
T1 - Reactions of hydroxymatairesinol over supported palladium catalysts
AU - Markus, Heidi
AU - Mäki-Arvela, Päivi
AU - Kumar, Narendra
AU - Heikkilä, Teemu
AU - Lehto, Vesa-Pekka
AU - Sjöholm, Rainer
AU - Holmbom, Bjarne
AU - Salmi, Tapio
AU - Murzin, Dmitry Yu.
N1 - Funding Information:
This work is part of the activity at the Åbo Akademi Process Chemistry Centre within the Finnish Centre of Excellence Programme (2000–2005) by the Academy of Finland. Financial support from the Raisio Group Research Foundation and European Union through the Sixth Framework Programme is gratefully acknowledged. The authors thank Christer Eckerman for the HMR preparation, Markku Reunanen for the GC-MS analysis, and Drs. Stan Dzwigaj and Eric Marceau for the TEM analysis.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2006/3/10
Y1 - 2006/3/10
N2 - In this work, hydroxymatairesinol (extracted from Norway spruce knots) was hydrogenolyzed to matairesinol over palladium impregnated H-Beta-300, H-Beta-150, H-Beta-25, H-Beta-11, H-Y, H-Mordenite, H-MCM-41, H-ZSM-5, SiO 2, and Al2O3. H-Beta-25 without palladium was also investigated. The hydrogenolysis was performed in 2-propanol at 70 °C under hydrogen and nitrogen atmospheres in a stirred glass reactor. The catalysts were characterized by nitrogen physisorption, direct current plasma atomic emission spectrometry, X-ray powder diffraction, CO pulse chemisorption, transmission electron microscopy, and Fourier transform infrared spectroscopy (pyridine adsorption). Palladium on H-Beta with different acidities was tested; the results showed that the reaction rate was inversely proportional to the acidity. However, Brønsted acid sites are needed for the reaction, because palladium on SiO2 and Al2O3 is not active. In addition to the acidity, a metal is needed; the H-Beta-25 support without palladium displays no activity.
AB - In this work, hydroxymatairesinol (extracted from Norway spruce knots) was hydrogenolyzed to matairesinol over palladium impregnated H-Beta-300, H-Beta-150, H-Beta-25, H-Beta-11, H-Y, H-Mordenite, H-MCM-41, H-ZSM-5, SiO 2, and Al2O3. H-Beta-25 without palladium was also investigated. The hydrogenolysis was performed in 2-propanol at 70 °C under hydrogen and nitrogen atmospheres in a stirred glass reactor. The catalysts were characterized by nitrogen physisorption, direct current plasma atomic emission spectrometry, X-ray powder diffraction, CO pulse chemisorption, transmission electron microscopy, and Fourier transform infrared spectroscopy (pyridine adsorption). Palladium on H-Beta with different acidities was tested; the results showed that the reaction rate was inversely proportional to the acidity. However, Brønsted acid sites are needed for the reaction, because palladium on SiO2 and Al2O3 is not active. In addition to the acidity, a metal is needed; the H-Beta-25 support without palladium displays no activity.
KW - Acidity
KW - Hydrogenolysis
KW - Hydroxymatairesinol
KW - Lignans
KW - Matairesinol
KW - Oxomatairesinol
KW - Zeolites
UR - http://www.scopus.com/inward/record.url?scp=32344453785&partnerID=8YFLogxK
U2 - 10.1016/j.jcat.2005.12.022
DO - 10.1016/j.jcat.2005.12.022
M3 - Article
AN - SCOPUS:32344453785
SN - 0021-9517
VL - 238
SP - 301
EP - 308
JO - Journal of Catalysis
JF - Journal of Catalysis
IS - 2
ER -