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Synthesis of Oxygenates from Synthesis Gas over CuO/ZnO/Al2O3 Catalyst: The Role of a Dehydrating Component
https://doi.org/10.18412/1816-0387-2018-5-12-18
Abstract
The influence of the flow rate on parameters of bifunctional catalysts with different dehydrating components in the synthesis of methanol/dimethyl ether (DME) from synthesis gas (19.1 vol.% CO, 5.9 vol.% CO2, 5.5 vol.% N2, rest H2) at 260 °C and 3 MPa was studied. The commercial catalyst Megamax 507 was used as the methanol agent and active γ-alumina as dehydrating agent, quartz glass, which is inert to methanol dehydration, being used for comparison. At flow rate below 20,000 L·(kgcat·h)–1, the conversion of CO and oxygenate capacity (calculated as C1) was higher over alumina-containing samples than over quartz glass. This observation was accounted for by a decrease in the rate of the reverse reaction of methanol with water at the partial conversion of methanol to DME to lead eventually to an increase in the methanol yield. The benefit of the one-stage synthesis against two-stage synthesis of oxygenates depended on the load: as the load increased, the difference in the capacity went through maximum.
About the Authors
M. A. Kipnis
Topchiev Institute of Petrochemical Synthesis, Moscow
Russian Federation
Russian Federation
I. A. Belostotskiy
Topchiev Institute of Petrochemical Synthesis, Moscow
Russian Federation
Russian Federation
E. A. Volnina
Topchiev Institute of Petrochemical Synthesis, Moscow
Russian Federation
Russian Federation
G. I. Lin
Topchiev Institute of Petrochemical Synthesis, Moscow
Russian Federation
Russian Federation
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Review
For citations:
Kipnis M.A., Belostotskiy I.A., Volnina E.A., Lin G.I. Synthesis of Oxygenates from Synthesis Gas over CuO/ZnO/Al2O3 Catalyst: The Role of a Dehydrating Component. Kataliz v promyshlennosti. 2018;18(5):12-18. (In Russ.) https://doi.org/10.18412/1816-0387-2018-5-12-18
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