TY  - JOUR
TI  - $CO_2$ hydrogenation to methanol and dimethyl ether at atmospheric pressure using
$Cu-Ho-Ga/γ–Al_2 O_3 and Cu-Ho-Ga/ZSM-5$: Experimental study and thermodynamicanalysis
AB  - $CO_2$ valorization through chemical reactions attracts significant attention due to the mitigation of greenhouse gas effects. This
article covers the catalytic hydrogenation of$CO_2$ to methanol and dimethyl ether using Cu-Ho-Ga containing ZSM-5 and g-Al2O3 at
atmospheric pressure and at temperatures of 210 °C and 260 °C using a $CO_2:H_2$ feed ratio of 1:3 and 1:9. In addition, the thermodynamic limitations of methanol and DME formation from $CO_2$ was investigated at a temperature range of 100–400 °C. $Cu-Ho-Ga/ gamma -Al_2O_3$
catalyst shows the highest formation rate of methanol $(90.3 µmolCH3OH/g_{cat}/h )$ and DME (13.2 µmolDME/gcat/h) as well as the highestselectivity towards methanol and DME (39.9 %) at 210 °C using a $CO_2:H_2$ 1:9 feed ratio. In both the thermodynamic analysis and
reaction results, the higher concentration of H2 in the feed and lower reaction temperature resulted in higher DME selectivity and lowerCO production rates.
AU  - Tuygun, Cansu
AU  - Ipek, Bahar
DO  - 10.3906/kim-2009-66
PY  - 2021
JO  - Turkish Journal of Chemistry
VL  - 45
IS  - 1
SN  - 1300-0527
SP  - 231
EP  - 247
DB  - TRDizin
UR  - http://search/yayin/detay/526006
ER  -