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Study Finds Biodiesel Easily Susceptible to Anaerobic Biodegradation, With Resulting Accelerated Biocorrosion of Metal

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A study by researchers from the University of Oklahoma and the US Naval Research Laboratory has found that biodiesel is easily susceptible to biological degradation by anaerobic bacteria. In a fuel environment, anaerobic conditions prevail whenever heterotrophic microbial respiration consumes oxygen at a rate that exceeds diffusion.

Mariner 287
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Mn-Pt Nanocubes as Promising Fuel Cell Electrode Catalysts

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Researchers at the University of Pennsylvania have synthesized manganese-platinum (Mn-Pt) nanocubes that how better electrocatalytic properties than their spherical counterparts. Alloys with Mn and platinum can provide a less expensive, more active catalyst in the PEM environment, the authors note. Article ASAP doi: 10.1021/ja100705j.

Fuel 186
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Kyushu University research group develops new method for creating highly efficient gold nanoparticle catalysts for fuel cells

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Credit: International Institute for Carbon-Neutral Energy Research (I²CNER), Kyushu University. By wrapping the support in the polybenzimidazole polymer we successfully developed with platinum, we created a much better support environment for the gold nanoparticles. Click to enlarge.

Universal 150
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New highly selective and efficient catalyst for reduction of CO2 to CO

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Researchers at the University of Delaware have developed a highly selective nanoporous silver catalyst capable of electrochemically reducing carbon dioxide to carbon monoxide with 92% efficiency. Additionally, because it is inorganic, silver remains more stable under harsh catalytic environments. Hutchings, Yannick C.

CO2 210
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BESC researchers identify key proteins in species of extremely thermophilic bacteria for breakdown of biomass into fermentable sugars

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Previously, we knew these bacteria would secrete enzymes that would then freely diffuse into their environment. We assumed that the enzymes would by chance stick to either cellulose or a piece of biomass in their environment and start to degrade it. The extremely thermophilic, cellulose-degrading Caldicellulosiruptor bescii.

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NREL LCA Harmonization Project delivers meta-analyses of lifecycle GHG emissions for energy technologies

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Each article describes the details of the calculations for each step of harmonization. Each article took a slightly different approach, demonstrating the flexibility of the harmonization approach. —Heath and Mann. — JIE editor-in-chief Reid Lifset.

Emissions 236
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Titanium Dioxide-Supported Platinum Catalyst Provides Ultrahigh Stability for PEM Fuel Cell Applications

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A team at the University of South Carolina synthesized a titanium dioxide (TiO 2 ) and platinum catalyst supported on TiO 2 (Pt/TiO 2 ) for use in a fuel cell. The University of South Carolina catalyst addresses the conductivity issue, while offering a solution to the stability issue posed by Pt/C catalysts.