Phosphinoethyl-sulfonatoalkylthioethers and diphenyl-ω-sulfonatoalkyl-phosphines as ligands and polyoxyethylene–polyoxypropylene–polyoxyethylene triblock co-polymers as promoters in the rhodium-catalyzed hydroformylation of 1-dodecene in aqueous two-phase systems

Autor:	Eckhard Paetzold, M Frank, Günther Oehme, Ch. Fischer
Rok vydání:	2003
Předmět:	chemistry.chemical_classification Aqueous solution Alkene Ligand Process Chemistry and Technology chemistry.chemical_element Catalysis Rhodium chemistry.chemical_compound chemistry Polymer chemistry Organic chemistry 1-Dodecene Physical and Theoretical Chemistry Hydroformylation Phosphine
Zdroj:	Journal of Molecular Catalysis A: Chemical. 200:95-103
ISSN:	1381-1169
Popis:	The rhodium-catalyzed hydroformylation of 1-dodecene was investigated with a series of sulfonated water-soluble phosphine ligands at a pressure of 60 bar CO/H2 and a temperature of 120 °C. Seven different groups of water-soluble phosphines were used for our investigations. We established an optimized ligand/rhodium ratio of 5 for the phosphines 1a, [Ph2P(CH2)2S(CH2)2SO3Na], and 1b, [Ph2P(CH2)2S(CH2)3SO3Na]. The utilized arylphosphino-thioether-alkylsulfonates formed with Rh(I) compounds highly active catalysts which could be recycled. The addition of detergents speeds up the hydroformylation reaction, but disturbs the phase separation (recycling). The best promotion effect and the smallest negative influence on phase separation gave polyoxyethylene–polyoxypropylene–polyoxyethylene triblock co-polymers. The ratio of 1-dodecene/rhodium could be increased up to 10.000 and we achieved turnover numbers (TONs)>50.000 without any surfactant and TONs of about 65.000 in presence of the co-polymers owing to the recycling on the catalytic system.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3b9b74d1142da0d441147f12d3fa7f28 https://doi.org/10.1016/s1381-1169(03)00024-4 Zobrazit plný text záznamu Full Text from ScienceDirect