Formylation with supercritical carbon dioxide over Ru/Al 2 O 3 modified by phosphines: heterogeneous or homogeneous catalysis?

M Rohr, JD Grunwaldt, A Baiker

Index: Rohr, Markus; Grunwaldt, Jan-Dierk; Baiker, Alfons Journal of Catalysis, 2005 , vol. 229, # 1 p. 144 - 153

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Citation Number: 8

Abstract

The formylation of 3-methoxypropylamine with hydrogen and “supercritical” carbon dioxide over Ru-based catalysts was studied. In this solventless process, carbon dioxide acts as both reactant and solvent. Interestingly, Ru/Al2O3 modified by the phosphine 1, 2-bis (diphenylphosphino) ethane (dppe) showed a high formylation activity at 100% selectivity, comparable to those of the homogeneous catalysts RuCl2 (dppe) 2 and RuCl2 (PPh3) 3. ...