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 CO₂ consuming process. However, other factors such as the high emitting synthesis of EC precursors hinder its environmental capabilities. Methanol oxycarbonylation is a mature DMC non-CO₂ consuming 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 CO₂ in 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 CO₂ utilization 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 %.

碳酸二甲酯（DMC）最近因其对环境友好的地位和能够替代毒性更大的化学药品的多种用途而广受欢迎。在其几种商业合成生产路线中，碳酸亚乙酯（EC）酯交换反应成为消耗CO _2的过程。但是，其他因素（例如EC前体的高发射合成）阻碍了其环境能力。甲醇氧羰基化是一种成熟的DMC不消耗CO _2的合成路线，具有在其中间体的整个合成过程中间接利用温室气体的潜力。在这项工作中，我们提出了使用甲醇氧羰基化路线的DMC生产上部结构，目的是消耗CO ₂在合成气（合成气）和甲醇合成阶段都可以。结果表明，与未整合的情况相比，将甲醇和合成气合成与DMC生产过程整合在一起可大大降低成本和排放。但是，增加了反向水煤气变换（RWGS）反应器后，排放量进一步降低到最低1.019。kg CO ₂ -eq / kg DMC，与直接利用CO _2的途径相比，指示剂减少了54％。与其他路线相比，将这种DMC与汽油混合使用可以将使用混合燃料的GWP降低到潜在的16％。