【摘 要】
：
The intermittent nature of renewable resources requires for most applications the development of efficient and cost-effective technologies for steady supply of
【机 构】
：
ENEA-Italian Agency for New Technologies, Department of Energetic Technologies, Laboratory of Thermo
论文部分内容阅读
The intermittent nature of renewable resources requires for most applications the development of efficient and cost-effective technologies for steady supply of electrical energy.The storage of energy in the form of hydrogen chemically bound within organic molecules (rather than physically as compressed gas or cooled liquid) represents an alternative approach that is attracting great research interest.Compared to other liquid organic hydrogen carriers (LOHCs),dimethyl ether (DME) appears to have the largest potential impact on society,especially if inserted in technological chains of CO2 sequestration and utilization,so to determine an effective mitigation of environmental issues,without any net effect on the carbon footprint.Specifically,the steps of H2 storage and Ha release can take place in two coupled chemical processes,constituted by the exothermic synthesis of DME via CO2 hydrogenation and the endothermic steam reforming of DME,respectively.Herein,the latest advances in the development of heterogeneous bifunctional and hybrid catalysts for the direct hydrogenation of CO2 to DME are thoroughly reviewed,with special emphasis on thermodynamics,catalyst design and process feasibility.Despite many aspects behind the mechanism of DME synthesis from Ha-CO2 streams are still to be uncovered,the recent progress in the research on H2 release by DME steam reforming is increasing the interest for effectively closing this binary H2 loop,in view of future green deals and sustainable research developments.
其他文献
High ionic conductivity,good electrochemical stability,and satisfactory mechanical property are the crucial factors for polymer solid state electrolytes.Herein,
Supercapacitors are one of the most promising energy storage devices in the fields of vehicle transportation,flexible electronic devices,aerospace,etc.However,t
Direct conversion of biomass to functional materials is an ideal solution to relieve challenges in environ-mental and energy sustainability.We herein demonstrat
Rational coupling of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) catalysts is extremely important for practical overall water splittin
Lithium metal has aroused extensive research interests as the anode for next-generation rechargeable batteries.However,the well-known dendritic Li growth and co
To anchor the polysulfide and enhance the conversion kinetics of polysulfide to disulfide/sulfide is critical for improving the performance of lithium-sulfur battery.For this purpose,the graphene-supported tin(Ⅳ) phosphate(Sn(HPO_4)_2·H_2 O,SnP) composite
Aqueous zinc-ion batteries (ZIBs) are receiving a continuously increasing attention for mobile devices,especially for the flexible and wearable electronics,due
Lead(Pb)-free Tin(Sn)-based perovskite solar cells(PSCs)have been favored by the community due to their low toxicity,preferable bandgaps,and great potential to achieve high power conversion efficiencies(PCEs).Interfaces engineering plays important roles i
Ru-based heterogeneous catalysts have been used in a wide range of important reactions.However,due to the sintering of Ru nanoparticles their practical applications are somewhat restricted.Herein,for the first time we report a new and facile strategy to c
The photocatalytic performances of water oxidation were usually carried out in two different systems,photosensitizer and non-photosensitizer systems.There is fe