Production de Méthane Vert en Combinant la Conversion D'électricité en Gaz et la Capture du CO2 à L'aide de Réseaux Métal-Organiques

联合国环境规划署（UNEP）估计，我们每年向大气中释放500亿吨（50 x 10^9吨）温室气体（ghg）。其中370亿吨是二氧化碳，其余主要是甲烷。这个问题的两个直接解决方案包括：1)减少我们每年的温室气体排放量；2)通过使用捕获二氧化碳和其他气体的材料和方法来限制排放到大气中的气体。由于减少温室气体排放的努力还不够，所有七国集团政府都在大力投资于二氧化碳减排技术的研究和开发。这些技术包括将二氧化碳以碳酸盐的形式矿化，或通过注入埋在地下，或储存在多孔材料中的储存方法。虽然后一种方法减少了大气中二氧化碳的存在，但它们无助于结束二氧化碳的生命周期。在循环经济和可持续发展方法中，捕获的二氧化碳可以通过将其转化为增值化学品（如甲烷）来实现增值。利用可再生电力产生的氢气回收储存的二氧化碳，不仅可以减少其对全球变暖的影响，还可以缩短材料的生命周期，这是循环经济的关键因素。近年来，一些研究集中在利用Ni和Ru掺杂碱金属氧化物的双功能材料（DFM）在单反应器中进行CO2捕集和CO2甲烷化的结合。在本项目中，我们将制定一种由两部分组成的材料：1)能够高效和高容量吸附二氧化碳的金属有机框架（MOF）， 2)掺杂Ru或Ni的MOF，将捕获的二氧化碳转化为甲烷。我们的团队旨在开发创新材料，结合新型反应器和工艺，用于二氧化碳的捕获和甲烷化。长期目标是开发一种可替代的、高效的、有利可图的方式来储存和回收和使用二氧化碳，这将对qu忧郁省和加拿大产生重大的积极的经济和社会影响。

The United Nations Environment Program (UNEP) estimates that we release 50 billion tonnes (50 x 10^9 t) of greenhouse gases (GHGs) globally into the atmosphere annually. Of this number, 37 billion tonnes is CO2, and the rest is primarily methane. Two immediate solutions to this problem include 1) reducing our annual GHG production, and 2) limiting what is released into the atmosphere by using materials and methods to capture CO2 and other gases. Since efforts to reduce our production of GHGs have not been sufficient, all G7 governments are investing heavily in research and development on CO2 mitigation technologies. These technologies include storage methods in which the CO2 is either mineralized in the form of carbonates, or buried underground by injection, or stored in porous materials. Although these latter approaches reduce the presence of CO2 in the atmosphere, they do not help close its life cycle. In a circular economy and sustainable development approach, the captured CO2 could be valorized by transforming it into value-added chemicals, such as methane. Recycling stored CO2 with H2 generated by renewable electricity would not only reduce its impact on global warming but also close the life cycle of materials, a key factor in the circular economy.In recent years, a few studies have focused on the combination of CO2 capture and CO2 methanation in a single reactor using dual-functional materials (DFM) based on alkali metal oxides doped with Ni and Ru. In the present project, we will instead formulate a material consisting of two components: 1) a metal-organic framework (MOF) capable of adsorbing CO2 with high efficiency and capacity and 2) a MOF doped with Ru or Ni to convert the captured CO2 to methane. Our team aims to develop innovative materials, in combination with new types of reactors and processes, for the capture and methanation of CO2. The long-term objective is to develop an alternative, efficient, and profitable way to store but also to recover and use CO2, which will have a significant positive economic and social impact for Québec and Canada.