The activity and durability of two hybrid bifunctional dimethyl ether (DME) synthesis catalysts: 6CuO-3ZnO-Al2O3/gamma-Al2O3 and 6CuO-3ZnO-1Al(2)O(3)/HZSM-5, have been evaluated for the conversion of CO2/H-2 to DME at 260 degrees C, 5 MPa, and gas per hourly space velocity (GHSV) of 3000 mLg(cat)(-1) h(-1) in fixed-bed and slurry reactors. The catalyst 6CuO-3ZnO-Al2O3/gamma-Al2O3 mostly promoted reverse-water-gas-shift (RWGS) reaction with very low selectivity to DME, and a low conversion of CO2. The other catalyst, 6CuO-3ZnO-1Al(2)O(3)/HZSM-5, showed much higher conversion of CO2 with higher selectivity to DME in both, fixed-bed and slurry reactors. (c) 2011 Elsevier B.V. All rights reserved.
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Ajou Univ, Dept Energy Syst Res, Suwon 443749, South KoreaAjou Univ, Dept Energy Syst Res, Suwon 443749, South Korea
Shin, Dong-Yoon
Hwang, Kyung-Ran
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Korea Inst Energy Res, Clean Fuel Dept, Taejon 305343, South KoreaAjou Univ, Dept Energy Syst Res, Suwon 443749, South Korea
Hwang, Kyung-Ran
Park, Jong-Soo
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Korea Inst Energy Res, Energy Mat Ctr, Taejon 305343, South KoreaAjou Univ, Dept Energy Syst Res, Suwon 443749, South Korea
Park, Jong-Soo
Park, Myung-June
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Ajou Univ, Dept Energy Syst Res, Suwon 443749, South Korea
Ajou Univ, Dept Chem Engn, Suwon 443749, South KoreaAjou Univ, Dept Energy Syst Res, Suwon 443749, South Korea
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Suez Univ, Fac Petr & Min Engn, Petr Refinery & Petrochem Engn Dept, Suez, Egypt
Suez Univ, Enhanced Oil Recovery Lab, Suez, EgyptSuez Univ, Fac Petr & Min Engn, Petr Refinery & Petrochem Engn Dept, Suez, Egypt
El-Maghraby, Rehab M.
Ramzy, Mahmoud
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Sonker Bunkering Co Sonker, Suez, EgyptSuez Univ, Fac Petr & Min Engn, Petr Refinery & Petrochem Engn Dept, Suez, Egypt
Ramzy, Mahmoud
Aboul-Gheit, Ahmed K.
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Egyptian Petr Res Inst, Cairo, EgyptSuez Univ, Fac Petr & Min Engn, Petr Refinery & Petrochem Engn Dept, Suez, Egypt