منابع مشابه
Black carbon from aviation
Simulating the global atmospheric black carbon cycle: a revisit to the contribution of aircraft emissions J. Hendricks, B. Kärcher, A. Döpelheuer , J. Feichter, U. Lohmann, and D. Baumgardner DLR-Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany DLR-Institut für Antriebstechnik, Köln, Germany Now at DLR-Vorstand, Köln, Germany Max-Planck-Institut für Meteorologie, Hamburg, Germany D...
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Reducing greenhouse gas emissions from the transportation sector may be the most difficult aspect of climate change mitigation. We suggest that carbon neutral hydrocarbons (CNHCs) offer an alternative pathway for deep emission cuts that complement the use of decarbonized energy carriers. Such fuels are synthesized from atmospheric carbon dioxide (CO2) and carbon neutral hydrogen. The result is ...
متن کاملCarbon-neutral energy cycles using alcohols
We demonstrated carbon-neutral (CN) energy circulation using glycolic acid (GC)/oxalic acid (OX) redox couple. Here, we report fundamental studies on both catalyst search for power generation process, i.e. GC oxidation, and elemental steps for fuel generation process, i.e. OX reduction, in CN cycle. The catalytic activity test on various transition metals revealed that Rh, Pd, Ir, and Pt have p...
متن کاملNeutral atomic carbon in centers of galaxies
We present measurements of the emission from the centers of fifteen spiral galaxies in the P1 − 3 P0 [CI] fine-structure transition at 492 GHz. Observed galaxy centers range from quiescent to starburst to active. The intensities of neutral carbon, the J=2–1 transition of CO and the J=4–3 transition of CO are compared in matched beams. Most galaxy centers emit more strongly in [CI] than in CO, c...
متن کاملSupercapacitive Performance of Ordered Mesoporous Carbon (CMK-3) in Neutral Aqueous Electrolyte
Ordered Mesoporous Carbon (OMC) represents an interesting material for electric double layer capacitors which has the high surface area, easily accessed ordered pore channels and lower production cost. In this work, CMK-3 as promising OMC has been fabricated using the ordered mesoporous silica SBA-15 as a template. The structure and morphology of CMK-3 are characterized by X-ray diffraction...
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ژورنال
عنوان ژورنال: Europhysics News
سال: 2019
ISSN: 0531-7479,1432-1092
DOI: 10.1051/epn/2019503