Electrocatalysis for Chemical and Fuel Production: Investigating Climate Change Mitigation Potential and Economic Feasibility,Environmental Science & Technology

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Electrocatalysis for Chemical and Fuel Production: Investigating Climate Change Mitigation Potential and Economic Feasibility
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2021-02-12 , DOI: 10.1021/acs.est.0c07309
Qingshi Tu ₁ , Abhijeet Parvatker ₂ , Mahlet Garedew _{3,

4} , Cole Harris ₅ , Matthew Eckelman ₂ , Julie B. Zimmerman _{3,

4,

6} , Paul T. Anastas ₃ , Chun Ho Lam _{7,

8}

Affiliation

The manufacture of goods from oil, coal, or gas to everyday consumer products comprises in more or less all cases at least one catalytic step. Compared to conventional hydrothermal catalysis, electrocatalysis possesses the advantage of mild operational conditions and high selectivity, yet the potential energy savings and climate change mitigation have rarely been assessed. This study conducted a life cycle assessment (LCA) for the electrocatalytic oxidation of crude glycerol to produce lactic acid, one of the most common platform chemicals. The LCA results demonstrated a 31% reduction in global warming potential (GWP) compared to the benchmark (bio- and chemocatalytic) processes. Additionally, electrocatalysis yielded a synergetic potential to mitigate climate change depending on the scenario. For example, electrocatalysis combined with a low-carbon-intensity grid can reduce GWP by 57% if the process yields lactic acid and lignocellulosic biofuel as compared to a conventional fossil-based system with functionally equivalent products. This illustrates the potential of electrocatalysis as an important contributor to climate change mitigation across multiple industries. A technoeconomic analysis (TEA) for electrocatalytic lactic acid production indicated considerable challenges in economic feasibility due to the significant upfront capital cost. This challenge could be largely addressed by enabling dual redox processing to produce separate streams of renewable chemicals and biofuels simultaneously.

中文翻译：

用于化学和燃料生产的电催化：研究缓解气候变化的潜力和经济可行性

从石油，煤炭或天然气到日常消费产品的制造在几乎所有情况下都至少包括一个催化步骤。与传统的水热催化相比，电催化具有温和的操作条件和高选择性的优势，但很少评估其潜在的节能效果和缓解气候变化的能力。这项研究进行了生命周期评估（LCA），用于粗甘油的电催化氧化以生产乳酸，乳酸是最常见的平台化学品之一。LCA结果表明，与基准过程（生物催化和化学催化）相比，全球变暖潜能值（GWP）降低了31％。另外，根据情况，电催化产生了协同潜力来缓解气候变化。例如，与具有功能等效产品的传统化石系统相比，如果该工艺产生乳酸和木质纤维素生物燃料，则电催化结合低碳强度网格可以将全球变暖潜能值降低57％。这说明了电催化作为跨多个行业缓解气候变化的重要贡献者的潜力。对电催化乳酸生产的技术经济分析（TEA）表明，由于大量的前期资本成本，在经济可行性方面面临着巨大挑战。通过实现双重氧化还原处理以同时生产分离的可再生化学物质和生物燃料流，可以在很大程度上解决这一挑战。

更新日期：2021-03-02

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