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Co‐production of dimethyl ether and methanol from CO 2 hydrogenation: development of a stable hybrid catalyst
Author(s) -
Tao JiaLin,
Jun KiWon,
Lee KyuWan
Publication year - 2001
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/1099-0739(200102)15:2<105::aid-aoc100>3.0.co;2-b
Subject(s) - dimethyl ether , catalysis , chemistry , methanol , yield (engineering) , selectivity , ether , nuclear chemistry , organic chemistry , metallurgy , materials science
Efforts have been made aimed at the development of an active active and stable catalyst in the co‐production of dimethyl ether (DME) and methanol from CO 2 –H 2 . The stabilities of ZSM‐5 catalysts and Cu–ZnO‐based methanol synthesis catalysts were investigated separately under water‐rich conditions. By combining each stable catalyst, a relatively stable hybrid catalyst, Cu–ZnO–Al 2 O 3 –Cr 2 O 3 + H–ZSM‐5 (SiO 2 /Al 2 O 3 = 80), has been developed. After losing about 5% of its original activity in 120 h, the catalyst exhibited no significant reduction in activity until 350 h in the reaction at 523 K and 3.0 MPa. Also, the catalytic activity was satisfactory at the steady state: the total yield of DME and methanol was higher than 26% with over 90% DME selectivity, but the total yield of hydrocarbons was lower than 0.25%. Copyright © 2001 John Wiley & Sons, Ltd.