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Hydrogenolysis of a Wood Extractive to an Anticarcinogenic and Antioxidative Compound by Heidi Markus; Päivi Mäki-Arvela; Narendra Kumar; Tapio Salmi; Dmitry Yu. Murzin is a Materials Science article available to read on EtoBox.

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Solvent effects and catalyst stability were studied in the three-phase hydrogenolysis of the natural occurring lignan hydroxymatairesinol to matairesinol. To study the solvent effects, the reaction was carried out over a Pd/C catalyst in a variety of solvents, including ethanol, 2-propanol, tert-butanol, 2-pentanol, as well as in a mixture of 2-propanol and water (50:50, v/v). Over 70% of the hydroxymatairesinol was converted in 4 h when ethanol, 2-propanol, and 2-pentanol were used as solvents. The reaction was significantly retarded by mixing 2-propanol with water and the lowest activity was obtained in tert-butanol. Alcohols with shorter carbon chains were also interacting with the reactant resulting in lower selectivity; the byproducts 7-ethoxymatairesinol and 7-isopropoxymatairesinol were obtained in ethanol (the lowest selectivity) and in 2-propanol, respectively. Hydrogenolysis in 2-propanol over palladium impregnated activated carbon, and two Beta zeolites (H-Beta-300 and H-Beta-150, SiO 2 /Al 2 O 3 molar ratio 300 and 150) was also investigated with respect to deactivation; consecutive experiments were performed with the catalysts being filtered, washed, dried, and re-redu

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Author

Heidi Markus; Päivi Mäki-Arvela; Narendra Kumar; Tapio Salmi; Dmitry Yu. Murzin

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0920-5861)

Published

2007

Language

EN

Field

Materials Science (Physical Sciences)