Rhodium-catalyzed hydrocarbonylation of acetic acid into higher acids

Autor:	Philippe Serp, Alain Kiennemann, Laurence Chateau, Philippe Kalck, Roselyne Feurer
Rok vydání:	1998
Předmět:	chemistry.chemical_classification Chemistry Process Chemistry and Technology Iodide chemistry.chemical_element Homogeneous catalysis Heterogeneous catalysis Catalysis Rhodium Acetic acid chemistry.chemical_compound Organic chemistry Physical and Theoretical Chemistry Selectivity Carbonylation
Zdroj:	Journal of Molecular Catalysis A: Chemical. 136:269-278
ISSN:	1381-1169
DOI:	10.1016/s1381-1169(98)00065-x
Popis:	The hydrocarbonylation of acetic acid into higher homologues catalyzed by rhodium/iodide systems has been investigated at 20 MPa and 220°C. In homogeneous catalysis the most convenient precursor proved to be [RhI 2 (CO) 2 ] − prepared from [RhCl(CO) 2 ] 2 in the presence of LiI; mean turnover frequencies of 67 h −1 and selectivities as high as 80% in propionic acid were obtained. In addition, in heterogeneous catalysis, rhodium supported upon activated carbon was observed to be an efficient system for the conversion of acetic acid into propionic acid (80% selectivity) in a fixed bed reactor. The reaction mechanism is thought to be an iodoacetyl rather than an ethanol pathway in the homogeneous system, while the two seem likely to be in operation in the heterogeneous system.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::daa9dbf6baa774462a0a476c522a4524 https://doi.org/10.1016/s1381-1169(98)00065-x Zobrazit plný text záznamu Full Text from ScienceDirect