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Researchers from Northwestern University and Princeton University have explored the impact on US air quality from an aggressive conversion of internal combustion vehicles to battery-powered electric vehicles (EVs). coal, oil, natural gas, and biomass). —Schnell et al.
A team of Brown University researchers has fine-tuned a copper catalyst to produce complex hydrocarbons—C 2+ products—from CO 2 with high efficiency. Among the metals studied, copper is the only metal known for its intrinsic ability to convert CO 2 into hydrocarbons and alcohols via electrochemical CO 2 RR.
The conversion normally requires significant amounts of energy in the form of high heat—a temperature of at least 700 ?C, She and her colleagues, including scientists from the University of Maryland in College Park and DENSsolutions, in Delft, the Netherlands, reported their findings in Nature Materials.
A study by a team at University of Illinois at Urbana−Champaign has found that, with currently achievable performance levels, synthetic fuels produced via the electrochemical reduction of CO 2 and the Fischer-Tropsch (FT) process system are not economically and environmentally competitive with using petroleum-based fuel. 6b00665.
When compared to a similarly structured catalyst made from iron—another promising, well-studied platinum substitute—the team found that the cobalt catalyst achieved a similar reaction but with four times the durability. Previous studies had shown that cobalt is far less active than iron-based catalysts.
An interdisciplinary team at Northwestern University has found that the enzyme responsible for the methane-methanol conversion catalyzes this reaction at a site that contains just one copper ion. The study is published in the journal Science. Credit: Northwestern University. —Ross et al. —,Amy C.
previous studies have followed the general framework of life cycle assessment (LCA), they have focused almost exclusively on quantifying the energy balance and GHG emissions associated with biofuels production. For gasoline, the study reflects the US context in which crude oil is to a large extent imported and refined domestically.
Efforts to shift away from fossil fuels and replace oil and coal with renewable energy sources can help reduce carbon emissions but do so at the expense of increased inequality, according to a new study by researchers at Portland State University (PSU) and Vanderbilt University. —Julius McGee.
The rapidly growing space industry may have a greater climate effect than the aviation industry and undo repair to the protective ozone layer if left unregulated, according to a new study led by UCL and published in the journal Earth’s Future as an open-access paper. The space industry is one of the world’s fastest growing sectors.
Researchers from the University of Illinois at Chicago (UIC) have identified molybdenum disulfide as a promising cost-effective substitute for noble metal catalysts for the electrochemical reduction of carbon dioxide. Carbon Capture and Conversion (CCC) Catalysts Fuels' Paaren Graduate Fellowship.
In a cohort study of a subset of 2050 newborns from the Children’s Health Study in southern California, researchers at the University of Southern California (USC) found that an increase of 2 standard deviations in prenatal exposure to particulate matter in air pollution was associated with higher newborn total thyroxine (TT4) measures.
Recent research in electrocatalytic CO 2 conversion points the way to using CO 2 as a feedstock and renewable electricity as an energy supply for the synthesis of different types of fuel and value-added chemicals such as ethylene, ethanol, and propane. Their paper is published in Proceedings of the National Academy of Sciences (PNAS).
A study by a team from the DOE’s Great Lakes Bioenergy Center has concluded that focusing on the yield of an energy crop alone can come at the expense of many other environmental benefits. This study is especially timely as high commodity prices are driving conversion of marginal lands to annual crop production, reducing future flexibility.
A team from Nanjing University, Hubei Normal University and Zhejiang University has developed a cobalt-doped graphdiyne catalyst for catalytically decomposing ammonia (NH 3 ) to generate H 2. Conversely, low-cost metal catalysts are available but demonstrate suboptimal catalytic effects. —Liu et al.
Researchers at The Ohio State University have used a chemical looping process to produce hydrogen from hydrogen sulfide gas—commonly called “sewer gas”. Compared with the undoped sulfur carrier, Mo dopant facilitates the surface hydrogen diffusion, thus promoting the overall H 2 S conversion. —Jangam et al.
Universal Hydrogen ( earlier post ) has formed a collaboration with three Japan-based companies to study—and ultimately to develop—a green hydrogen supply and logistics solution that will enable Japanese airlines to scale their utilization of hydrogen-powered aircraft in the very near-term.
Their paper was presented at the ASME Internal Combustion Engine Division 2012 Fall Technical Conference by Marcello Canova, assistant professor at OSU; lead author was Philipp Skarke, from the University of Stuttgart Institute for Internal Combustion Engines and Automotive Engineering. —Skarke et al. —Skarke et al.
A fast, green and one-step method for producing porous carbon spheres—a component for carbon capture technology and for new ways of storing renewable energy—has been developed by Swansea University researchers. storage and conversion, catalysis, gas adsorption and storage, drug and enzyme delivery, and water treatment.
Researchers from Peking University and SINOPEC have developed a one-post method for the synthesis of C 6+ branched compounds from isopropanol condenstation on Ni/MoC catalysts. This study also proposes a strategy to the production of branched carbon chain compounds via the condensation of biomass platform substrates. —Zhou et al.
Researchers from University of Girona (Spain) successfully used electrically efficient microbial electrosynthesis cells (MES) to convert CO 2 to butyric acid. mA cm −2 , the study achieved an average production rate of 14.5 At an applied current of 1.0 g m −2 d −1 of butyric acid. V and an electric energy requirement of 34.6
In recent years, the study of HEA has grown into an independent field of materials research, as evidenced by numerous publications10. Top images: The active material studied with high-resolution transmission electron microscopy (HRTEM) and energy-dispersive X-ray spectroscopy (EDX). —Sarkar et al. Sarkar et al.
However, some compounds like FeF 3 are capable of transferring multiple electrons through a more complex reaction mechanism, called a conversion reaction. Iron fluoride, an intercalation-conversion cathode for lithium-ion batteries, promises a high theoretical energy density of 1922?Wh?kg —Dong Su.
A study published earlier this year in the journal Nature Climate Change that cast doubt on whether biofuels produced from corn residue could meet federal mandates for cellulosic biofuels to reduce greenhouse gas emissions by 60% compared to gasoline ( earlier post ) has drawn critical response published as correspondence in the same journal.
One way to mitigate high feedstock cost is to maximize conversion into the bioproduct of interest. This maximization, though, is limited because of the production of CO 2 during the conversion of sugar into acetyl-CoA in traditional fermentation processes. In this study, researchers tested how C. Wiedel, Jennifer Au, Maciek R.
A competing reaction, called the hydrogen evolution reaction (HER) or “water splitting,” takes precedence over the CO 2 conversion reaction. —Haotian Wang, a Rowland Fellow at Harvard University and the corresponding author. This study was supported in part by the Rowland Institute at Harvard University.
A new boron-copper catalyst for the conversion of carbon dioxide (CO 2 ) into chemicals or fuels has been developed by researchers at Ruhr-Universität Bochum and the University of Duisburg-Essen. They optimized already available copper catalysts to improve their selectivity and long-term stability.
A team from seven US universities and the Korea Institue of Science and Technology, led by George Huber, Professor of Chemical and Biological Engineering at the University of Wisconsin-Madison, has developed an integrated catalytic process for the conversion of whole biomass into drop-in aviation fuels with maximal carbon yields.
A paper on the study is published in the journal Nature Microbiology. We study them because they are a natural model biorefinery. Understanding how evolution has solved the complex lignocellulose to fuel conversation process can help us design better industrial mimics and find novel enzymes or pathways.
Researchers at the University of Turku in Finland have developed a thin-layer artificial biofilm technology for sustainable and long-term ethylene photoproduction. 2 ethylene at 1.54% light to ethylene conversion efficiency. fold improvement in the light to ethylene conversion efficiency as compared to the cell suspension.
Researchers from Ben-Gurion University of the Negev and Ormat Industries Ltd. in Israel report the development of a comercially-viable, one-step catalytic hydrotreating process for the conversion of soybean oil to renewable diesel-type fuel in a paper in the journal Fuel. Steady-state operation was reached after about 150 h.
Researchers at the University of Southampton have transformed optical fibers into photocatalytic microreactors that convert water into hydrogen fuel using solar energy. The researchers have published their proof-of-concept in ACS Photonics and will now establish wider studies that demonstrate the scalability of the platform.
The new study is a culmination of that work. Syzygy has licensed Rice’s antenna-reactor technology, and the study included scaled-up tests of the catalyst in the company’s commercially available, LED-powered reactors. —Hossein Robatjazi, chief scientist at Houston-based Syzygy Plasmonics. Carter, Peter Nordlander, and Naomi J.
Rice University researchers and colleagues at Princeton and Syzygy Plasmonics have developed a plasmonic photocatalyst for the direct decomposition of hydrogen sulfide gas into hydrogen and sulfur, as an alternative to the industrial Claus process. Image courtesy of Halas Group/Rice University). —Naomi Halas.
Although EROI has important limitations as a metric, the study authors noted, it still represents a valuable first estimate of the viability of different fuel production pathways relative to conventional benchmarks. Credit: Liu et al. Click to enlarge.
Researchers at Pacific Northwest National Laboratory (PNNL), with colleagues from Oregon State University, have developed PNNL a durable, inexpensive molybdenum-phosphide catalyst that efficiently converts wastewater and seawater into hydrogen. Details of the team’s study appear in the journal ACS Catalysis.
Researchers from Huazhong University of Science and Technology in China and George Washington University in the US report in a new paper in the ACS journal Accounts of Chemical Research that a range of important carbon nanomaterials can be produced at high yield by molten carbonate electrolysis.
Researchers at the University of California Santa Barbara have developed catalytic molten metals to pyrolize methane to release hydrogen and to form solid carbon. Bi 0.73 ) achieved 95% methane conversion at 1065°C in a 1.1-meter Under these conditions, the equilibrium conversion is 98%. Metallic catalysts (e.g., Upham et al.
Unlike prior processes for converting alcohols into hydrocarbons with multiple steps for dehydration, oligomerization, and hydrogenation, the Vertimass consolidated alcohol dehydration and oligomerization (CADO) conversion is accomplished in a single reactor system using a metal exchanged zeolite catalyst. Hannon et al. GJ in the near future.
Researchers at Stanford University have developed a nanocrystalline copper material that produces multi-carbon oxygenates (ethanol, acetate and n-propanol) with up to 57% Faraday efficiency at modest potentials (–0.25?volts —Matthew Kanan, an assistant professor of chemistry at Stanford and coauthor of the Nature study.
The National Academies of Sciences, Engineering, and Medicine’s (NASEM’s) Board on Environmental Studies and Toxicology (BEST) announced the provisional committee for a new consensus study, Current Methods for Life Cycle Analyses of Low Carbon Transportation Fuels in the United States. Dunn, PhD, Northwestern University.
Wyman, the Ford Motor Company Chair in Environmental Engineering at the University of California, Riverside’s Bourns College of Engineering, has developed a versatile, relatively non-toxic, and efficient way to convert lignocellulosic biomass into biofuels and chemicals. Overview of the process. 2014) Click to enlarge.
Stanford researchers, with a colleague from King Fahd University of Petroleum and Minerals, have developed a simple and environmentally sound way to make ammonia with tiny droplets of water and nitrogen from the air. The conversion rate reaches 32.9 ± 1.38 This gas–liquid–solid heterogeneous catalytic system synthesizes ammonia in 0.2
Researchers at the University of Cambridge, with colleagues at the University of Tokyo, have developed a standalone device that converts sunlight, carbon dioxide and water into formic acid, a carbon-neutral fuel, without requiring any additional components or electricity.
A team at the University of Idaho has demonstrated that glycerol, a byproduct from biodiesel production, could be used as a substrate for producing drop-in gasoline-range biofuel. Nevertheless, very little research into the direct conversion of glycerol to gasoline-range hydrocarbons has been reported. Tropsch synthesis (FTS).
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