TY - JOUR
T1 - Alternative carbon dioxide utilization in dimethyl carbonate synthesis and comparison with current technologies
AU - Medrano-García, J. D.
AU - Javaloyes-Antón, J.
AU - Vázquez, D.
AU - Ruiz-Femenia, R.
AU - Caballero, J. A.
N1 - Publisher Copyright:
© 2021 Elsevier Ltd. All rights reserved.
PY - 2021/3
Y1 - 2021/3
N2 - Dimethyl carbonate (DMC) has recently gained popularity due to its environmentally friendly status and multiple applications in which it is able to replace more toxic chemicals. Among its several commercial synthesis production routes, the ethylene carbonate (EC) transesterification shines as a CO2consuming process. However, other factors such as the high emitting synthesis of EC precursors hinder its environmental capabilities. Methanol oxycarbonylation is a mature DMC non-CO2consuming synthesis route with the potential to indirectly utilize the greenhouse gas throughout the synthesis of its intermediates. In this work, we propose a DMC production superstructure using the methanol oxycarbonylation route with the aim of consuming CO2in both the synthesis gas (syngas) and methanol synthesis stages. Results show that the integration of methanol and syngas synthesis with the DMC production process vastly decreases both the cost and emission with respect to the unintegrated case. However, the addition of a Reverse Water Gas Shift (RWGS) reactor further decreases the emission down to a minimum of 1.019. kg CO2-eq/kg DMC, resulting in a 54 % decrease in the indicator compared with the direct CO2utilization route. In comparison with other routes, utilization of this DMC in blends with gasoline manages to reduce the GWP of using the fuel mix to a potential 16 %.
AB - Dimethyl carbonate (DMC) has recently gained popularity due to its environmentally friendly status and multiple applications in which it is able to replace more toxic chemicals. Among its several commercial synthesis production routes, the ethylene carbonate (EC) transesterification shines as a CO2consuming process. However, other factors such as the high emitting synthesis of EC precursors hinder its environmental capabilities. Methanol oxycarbonylation is a mature DMC non-CO2consuming synthesis route with the potential to indirectly utilize the greenhouse gas throughout the synthesis of its intermediates. In this work, we propose a DMC production superstructure using the methanol oxycarbonylation route with the aim of consuming CO2in both the synthesis gas (syngas) and methanol synthesis stages. Results show that the integration of methanol and syngas synthesis with the DMC production process vastly decreases both the cost and emission with respect to the unintegrated case. However, the addition of a Reverse Water Gas Shift (RWGS) reactor further decreases the emission down to a minimum of 1.019. kg CO2-eq/kg DMC, resulting in a 54 % decrease in the indicator compared with the direct CO2utilization route. In comparison with other routes, utilization of this DMC in blends with gasoline manages to reduce the GWP of using the fuel mix to a potential 16 %.
KW - Abbreviations CMO Classic methanol oxycarbonylation
KW - CCMO CO-consuming methanol oxycarbonylation
KW - DMC Dimethyl carbonate
KW - DME Dimethyl ether
KW - EC Ethylene carbonate
KW - EO Ethylene oxide
KW - GWP Global warming potential
KW - IMO Integrated methanol oxycarbonylation
KW - kg CO-eq Kilograms of COequivalent
KW - MO Methanol oxycarbonylation
KW - MTBE Methyl tert buthyl ether
KW - RWGS Reverse water gas shift
KW - STAC Specific Total Annualized Cost
UR - http://www.scopus.com/inward/record.url?scp=85099729586&partnerID=8YFLogxK
U2 - 10.1016/j.jcou.2021.101436
DO - 10.1016/j.jcou.2021.101436
M3 - Article
AN - SCOPUS:85099729586
SN - 2212-9820
VL - 45
JO - Journal of CO2 Utilization
JF - Journal of CO2 Utilization
M1 - 101436
ER -