Design and Development of New Carbon-Based Sorbent Systems for an Effective Containment of Hydrogen

Alan C. Cooper

关键词: CARBON;    CONTAINMENT;    DECALIN;    DESIGN;    FORECASTING;    HYDROGEN;    HYDROGENATION;    MOLECULAR STRUCTURE;    STORAGE;    THERMODYNAMICS Hydrogen storage;    Hydrogen Carrier;   

DOI  :  10.2172/1039432
RP-ID  :  86-377-P
PID  :  OSTI ID: 1039432
Others  :  TRN: US201210%%119

学科分类：再生能源与代替技术

美国|英语

来源: SciTech Connect

【 摘 要 】

This is a summary for work performed under cooperative agreement DE FC36 04GO14006 (Design and Development of New Carbon-based Sorbent Systems for an Effective Containment of Hydrogen). The project was directed to discover new solid and liquid materials that use reversible catalytic hydrogenation as the mechanism for hydrogen capture and storage. After a short period of investigation of solid materials, the inherent advantages of storing and transporting hydrogen using liquid-phase materials focused our attention exclusively on organic liquid hydrogen carriers (liquid carriers). While liquid carriers such as decalin and methylcyclohexane were known in the literature, these carriers suffer from practical disadvantages such as the need for very high temperatures to release hydrogen from the carriers and difficult separation of the carriers from the hydrogen. In this project, we were successful in using the prediction of reaction thermodynamics to discover liquid carriers that operate at temperatures up to 150 C lower than the previously known carriers. The means for modifying the thermodynamics of liquid carriers involved the use of certain molecular structures and incorporation of elements other than carbon into the carrier structure. The temperature decrease due to the more favorable reaction thermodynamics results in less energy input to release hydrogen from the carriers. For the first time, the catalytic reaction required to release hydrogen from the carriers could be conducted with the carrier remaining in the liquid phase. This has the beneficial effect of providing a simple means to separate the hydrogen from the carrier.