Hydroformylation of olefins catalysed by rhodium and cobalt clusters supported on organic (Dowex) resins |
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| Institution: | 1. Discipline of Inorganic Materials and Catalysis, Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), G.B. Marg, Bhavnagar 364 002, Gujarat, India;2. KAUST Catalysis Center (KCC), King Abdullah University of Science & Technology, 23955-6900 Thuwal, Saudi Arabia;3. R&D Center, Vadodara Manufacturing Division, Reliance Industries Limited, Vadodara, Gujarat, India;1. Humboldt Universität zu Berlin, Institut für Biologie, Experimentelle Biophysik, Invalidenstr. 42, D-10115 Berlin, Germany;2. Technische Universität Berlin, Institut für Chemie, Sekr. PC14, Straße des 17. Juni 135, D-10623 Berlin, Germany;1. College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China;2. School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China;3. Center for Reliability Science and Technologies, Chang Gung University, Taoyuan 33302, Taiwan;4. Kidney Research Center, Department of Nephrology, Chang Gung Memorial Hospital, Linkou, Taoyuan 33305, Taiwan;5. Center for Sustainabilty and Energy Technologies, Chang Gung University, Taoyuan 33302, Taiwan;1. Lomonosov Moscow State University, Faculty of Chemistry, 119234, Leninskie Gory, 1, 3, Moscow, Russia;2. The Smart Materials Research Institute, Sladkova 178/24, 344090 Rostov-on-Don, Russia;3. Institute of Physics, Southern Federal University, Stachki Ave., 194, 344090 Rostov-on-Don, Russia;4. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninskiy Prospect 29, Moscow 119991, Russia;5. National Research Center “Kurchatov Institute”, Akademika Kurchatova pl. 1, 123182 Moscow, Russia;1. Center for Environmentally Beneficial Catalysis, University of Kansas, Lawrence, KS, 66047, United States;2. Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, KS 66045, United States |
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| Abstract: | Co2Rh2(CO)12 or a mixture of Co4(CO)12 and Rh4(CO)12 were impregnated onto organic Dowex® resins to study the hydroformylation of olefins.Pressure, reaction time and amount of catalyst effect the alcohol production and the ratio of straight chain to branched alcohols in the Co2Rh2(CO)12—Dowex amine resin catalytic system. 50 bar of synthesis gas pressure, 17 h total reaction time and 0.050 g catalyst were the optimum conditions in the hydroformylation of 1-hexene at 100 °C, where the maximum yield of alcohols is 95%. Other hexene isomers and different olefins were studied as hydroformylation substrates.The presence of amine groups on the support or the addition of Et3N to the hydroformylation solution is necessary for the single-step alcohol formation. This conclusion was deduced from studies of the supports with a similar matrix but different functional groups.The mixture of Co4(CO)12 and Rh4(CO)12 supported on organic amine Dowex resin is an excellent catalyst, giving 99% alcohol production. The ratio of Rh/Co has a marked effect on the product distribution. The best alcohol conversions are reached with 2.6 or 3.6 of Rh/Co weight ratio.Co2Rh2(CO)12 decomposes to give a known, but not optimum, composition of Co and Rh on the support. Therefore a mixture of Co4(CO)12 and Rh4(CO)12 is a better catalyst precursor than Co2Rh2(CO)12. |
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