ZfN: Search Results

1	Author	Walter Strohmeier, Magdalena Pföhler	Requires cookie*
	Title	Vergleich der Hydrierung ungesättigter Verbindungen mit einem homogenen und heterogenen Platin-Katalysator in Essigsäure Comparison of Hydrogenation of Unsaturated Compounds with a Homogeneous and Heterogeneous Platinum Catalyst in Acetic Acid
	Abstract	Catalytical hydrogenation of unsaturated compounds in acetic acid with the homo-geneous catalyst prepared from H2PtCl6 + SnCl2 • 2 H20 and the heterogeneous catalyst, prepared from H2PtCl6 and H2, were carried out. A comparison of the results reveals two types of substrates, some are readily hydrogenated by the homogeneous the other ones by the heterogeneous system. Turnover numbers up to 1500 were observed. With the heterogeneous catalyst ethylbenzene is hydrogenated to ethylcyclohexane under mild conditions.
	Reference	(Z. Naturforsch. 31b, 941—944 [1976]; eingegangen am 2. März 1976)
	Published	1976
	Keywords	Catalysis, Hydrogenation, Homogeneous Catalyst, Heterogeneous Catalyst
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	TEI-XML for	default:Reihe_B/31/ZNB-1976-31b-0941.pdf
	Identifier	ZNB-1976-31b-0941
	Volume	31

2	Author	Francesco Ciardelli, Paolo Pertici	Requires cookie*
	Title	Structure and Reactivity of Aromatic Polymers/Ruthenium Catalysts
	Abstract	Previously prepared (J. Mol. Catalysis 11, 353 (1981)) polystyrene/ruthenium systems have been examined by EXAFS, TEM, IR and Raman spectroscopy. A structure based on small metal clusters bound to the polymer by single ruthenium-arene binding is proposed. The general validity of the approach has been confirmed by preparing a similar product when starting with poly-1-vinylnaphthalene in the place of polystyrene. Both systems are active for the hydrogenation of a large variety of unsaturated groups such as olefinic double bonds, mononuclear aromatic hydrocarbons, ketones, nitriles, nitroaromatic com-pounds and oximes. Catalytic activity, chemio-and stereoselectivity are discussed in terms of the proposed structure.
	Reference	Z. Naturforsch. 40b, 133—140 (1985); received September 13 1984
	Published	1985
	Keywords	Hydrogenations, Heterogeneous Catalysts, Ruthenium/Aromatic Vinyl Polymer Systems, Ruthenium/Arene Systems
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	TEI-XML for	default:Reihe_B/40/ZNB-1985-40b-0133.pdf
	Identifier	ZNB-1985-40b-0133
	Volume	40