EAGER: Photo-Thermo-Chemical CO2 Reforming of CH4 by Concentrated Sunlight

EAGER：通过集中阳光对 CH4 进行光热化学 CO2 重整

• 批准号: 1548091
• 负责人: Ying Li
• 金额: $ 10万
• 依托单位: Texas A&M Engineering Experiment Station
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-08-01 至 2017-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1548091&HistoricalAwards=false
• 关键词: EAGER; Photo; Thermo; Chemical; CO2

1548091(Li)The study will explore the combined heat- and light-driven reaction of two greenhouse gases - carbon dioxide and methane - to produce carbon monoxide and hydrogen that can be used to generate fuels or chemicals while decreasing levels of greenhouse gases. The unique aspect of the work is that the heat and light will be used simultaneously via a solar collector/heater to activate the carbon dioxide and methane reaction more effectively than by either heat or light alone. The approach has potential to be used in remote or small-scale applications such as biogas generators or landfills where conventional fuel sources are not available.The reaction between methane and carbon dioxide requires significant energy input to both activate the reactants and provide the thermodynamic driving force required for the endothermic reaction. Sunlight provides a means to a favorable energy balance. By use of a properly designed solar collector, optimized in wavelength and intensity to provide both direct photon activation and secondary thermal activation, the study will address the combined effectiveness of thermal and photonic energy input to drive the carbon dioxide - methane reaction. This will be one of the first studies of its kind, and should provide important guidance into the relative effectiveness of the combined approach versus either thermal or photocatalytic approaches alone. In addition, the study will develop catalysts that are specifically designed to utilize both thermal and photon energy sources, and it will also explore the mechanism of the combined photo-thermo-catalyzed reaction.If the approach is successful, it could open the door to more catalytic reactions that could benefit from the combined thermo-photo approach. These types of approaches rely on the sun for energy, and thus present a path to a more sustainable energy future as well as a means of mitigating greenhouse gas emissions or upgrading greenhouse gases to useful products. The concept also fits well with treating gases in remote locations or from small-scale gas sources, where solar collectors and reactors can be utilized in modular form without the need for ancillary power sources.

该研究将探索两种温室气体-二氧化碳和甲烷-的热和光驱动反应，以产生可用于产生燃料或化学品的一氧化碳和氢气，同时减少温室气体的水平。 这项工作的独特之处在于，热量和光线将通过太阳能收集器/加热器同时使用，以比单独使用热量或光线更有效地激活二氧化碳和甲烷反应。 这种方法有可能用于偏远或小规模的应用，如沼气发电机或垃圾填埋场，在传统的燃料来源是不可用的。甲烷和二氧化碳之间的反应需要大量的能量输入，既激活反应物，并提供所需的热力学驱动力的吸热反应。 阳光提供了一种有利的能量平衡的手段。 通过使用适当设计的太阳能收集器，优化波长和强度以提供直接光子激活和二次热激活，该研究将解决热能和光子能输入驱动二氧化碳-甲烷反应的组合有效性。 这将是同类研究中的首批研究之一，并应提供重要的指导，以了解综合方法与单独的热或光催化方法的相对有效性。 此外，该研究还将开发专门利用热能和光子能的催化剂，并探索光热催化反应的机理。如果该方法成功，将为更多的催化反应打开大门，这些反应将受益于光热催化方法。 这些类型的方法依赖于太阳能，因此提供了一条通往更可持续的能源未来的道路，以及减少温室气体排放或将温室气体升级为有用产品的手段。 这一概念也非常适合处理偏远地区或小规模气源的气体，其中太阳能收集器和反应器可以以模块化形式使用，而无需辅助电源。