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Hydrogenation of cinnamaldehyde over supported palladium catalysts

Wąsikowska K., Dmowska P., Bączek N., Strzelec K., Pernak J., Markiewicz B.

Polish Journal of Chemical Technology

2013

Vol. 15, nr 4

28-32

The selective hydrogenation of cinnamaldehyde has been studied using palladium catalysts based on epoxy resin cured with ionic liquids. Characterization of palladium catalysts has involved the following methods: IR spectroscopy, X-ray photoelectron spectroscopy (XPS), AAS spectroscopy and time-of-flight secondary ion mass spectrometry (TOF-SIMS). The investigated catalysts showed high stability and good recycling efficiency what makes them useful for a prolonged use. The factors influencing the selectivity of the supported catalysts were discussed.

Selective Hydrogenation of Crotonaldehyde over Gallia and Germania Supported Ruthenium Catalysts in a Gas Phase

Gebauer-Henke E., Rynkowski J.

Polish Journal of Chemistry

2008

Vol. 82, nr 1-2

25-31

Hydrogenation of crotonaldehyde in a gas phase at atmospheric pressure over Ru/support catalysts was studied. Ruthenium nitrozyloazotane Ru(NO)(NO3)3 and three supports: alfa-Ga2O3 (60.4 m2/g), beta-Ga2O3 (2.2 m2/g) and alfa-GeO2 (3.8 m2/g) were used for catalyst preparation with the nominal ruthenium content 5 wt. % and for the catalysts supported on alfa-Ga2O3 also 2 and 1 wt. %. The row of the catalytic performance of catalysts is as follows: 5 wt.%Ru/alfa-Ga2O3>5wt.%Ru/alfa-Ga2O3>5wt.%Ru/alfa-GeO2. The best catalyst, 5 wt. % Ru/alfa-Ga2O3, shows high selectivity to desired product-crotyl alcohol (above 85%) with the activity ca. 300 mi mol s–1 gRu