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Siemens and LanzaTech sign 10-year agreement to transform steel mill off-gases into bioethanol

19 June 2013

Siemens Metals Technologies and LanzaTech, a producer of low-carbon fuels and chemicals from waste gases, have signed a ten-year co-operation agreement to develop and market integrated environmental solutions for the steel industry worldwide. The collaboration will utilize the fermentation technology developed by LanzaTech transforming carbon-rich off-gases generated by the steel industry into low carbon bioethanol and other platform chemicals. (Earlier post.)

Siemens and LanzaTech will work together on process integration and optimization, and on the marketing and realization of customer projects. In December 2012, LanzaTech and Baosteel, a leading steel producer in China, announced the success of their 100,000 gallon per year (300 tons) pre-commercial plant located at one of Baosteel’s steel mills outside Shanghai, China. (Earlier post.)

Continue Reading “Siemens and LanzaTech sign 10-year agreement to transform steel mill off-gases into bioethanol”

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Study finds moderate biofuel blends increase benefits of RCCI in light-duty engines

19 June 2013

Preliminary results from a new study by a team from Oak Ridge National Laboratory (ORNL) and the University of Wisconsin suggest that the fuel properties of moderate biofuel blends such as E20 and B20 increase the benefits of the use of Reactivity Controlled Compression Ignition (RCCI). RCCI is a Low Temperature Combustion (LTC) strategy that uses in-cylinder blending of two different fuels to produce low NOxand PM while maintaining high thermal efficiency. (Earlier post.)

Previous studies on RCCI have used single-cylinder heavy-duty engines; in this study, Reed Hanson, Scott Curran and Robert Wagner (ORNL) and Rolf Reitz (U. of Wisconsin) investigated RCCI in a light-duty multi-cylinder engine over a wide number of operating points. Fuels in earlier studies were generally petroleum-based fuels such as diesel and gasoline, with some work done with high percentages of biofuels, such as E85.

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Univ. of Maryland team develops tin-film on wood fiber anode for Na-ion batteries; targeting grid storage

19 June 2013

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Electrochemical performance of the Sn anodes. (a) Galvanostatic charge/discharge voltage profiles at a rate of C/10. (b) Cycling performance of Sn@WF, Al2O3 coated fiber, and Cu current collector at a rate of C/10. The inset illustrates the structure of the wood fiber and Al2O3 coated fiber. Credit: ACS, Zhu et al. Click to enlarge.

A team at the University of Maryland has demonstrated that a material consisting of a thin tin (Sn) film deposited on a hierarchical conductive wood fiber substrate is an effective anode for a sodium-ion (Na-ion) battery, and addresses some of the limitations of other Na-ion anodes such as capacity fade due to pulverization.

The soft nature of wood fibers effectively releases the mechanical stresses associated with the sodiation process, and the mesoporous structure functions as an electrolyte reservoir that allows for ion transport through the outer and inner surface of the fiber. In a paper in the ACS journal Nano Letters, the team reported stable cycling performance of 400 cycles with an initial capacity of 339 mAh/g—a significant improvement over other reported Sn nanostructures. The soft and mesoporous wood fiber substrate can be utilized as a new platform for low cost Na-ion batteries, the team suggests.

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CPT SpeedStart technology validated for 1.2M stop-starts

18 June 2013

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Speedstart liquid-cooled switched-reluctance motor-generator. Click to enlarge.

UK-based Controlled Power Technologies (CPT) has completed more than two years of continuous testing to validate its SpeedStart belt-integrated starter-generator for 1.2 million stop-starts—considered the standard that will be required for a new generation of micro-mild hybrid vehicles. Developed from the outset for 12, 24 and 48 volt applications, CPT’s SpeedStart system is the first liquid-cooled switched-reluctance motor-generator developed for automotive stop-start. (Earlier post.)

Conventional starter motors typically look at 30,000 stop-starts, while current generation stop-start systems target up to 300,000 events. CPT said that no issues surfaced with the technology in any of the recorded test data throughout this extended period of stop-start testing, which was followed by a teardown and forensic examination of CPT’s compact motor-generator system.

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New catalysts enable photocatalytic version of water gas shift reaction for H2 production

18 June 2013

Researchers at the Univ. Politécnica de Valencia (Spain) have found that noble metal nanoparticles supported on titanium dioxide or cerium dioxide can catalyze the industrially important water gas shift (WGS) reaction for hydrogen production at ambient temperatures using visible light irradiation. An open access paper on their discovery is published in the RSC journal Energy and Environmental Science.

Currently, most hydrogen is produced via the steam reforming of natural gas, hydrocarbons and coal. Additional amounts of hydrogen are generated by the reaction of CO with water (the water gas shift reaction)—which also leads to the formation of CO2. WGS is an endothermic process typically carried out in industry at high temperatures (about 350 °C) with either an iron oxide- or copper-based catalyst to achieve almost complete CO conversion.

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New Bosch iBooster for improved braking control, more complete capture of braking energy in hybrids and EVs

18 June 2013

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The iBooster. Click to enlarge.

Bosch has developed the iBooster, an electromechanical brake booster that provides situation-dependent support when the driver initiates braking. The iBooster makes hybrid and electric vehicles even more efficient, while enhancing safety through shorter braking distances, says Gerhard Steiger, president of the Bosch Chassis Systems Control division.

For hybrid and electric vehicles to achieve their intended range and fuel efficiency, they must recover as much electrical drive energy as possible when braking. Ideally, cars would be slowed down purely as a result of their electric motor converting their kinetic energy into electricity, avoiding the loss of valuable energy through braking. The Bosch iBooster recovers almost all the energy lost in typical braking operations by ensuring deceleration rates of up to 0.3 g are achieved using the electric motor alone. It thus covers all common braking maneuvers in everyday traffic.

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Bosch sees future requiring multiple powertrain technologies; the larger the vehicle, the more the electrification

18 June 2013

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Powertrain technologies outlook up to 2020. Click to enlarge.

At the company’s 61st Automotive Press Briefing in Boxberg, Germany, Bosch senior executives outlined the company’s view on the general future of automotive technology—“efficient and increasingly electrical”, and provided a thumbnail of the way they see—and thus are developing products for—sector-specific technology trends.

In general, said Dr. Bernd Bohr, Chairman of the Bosch Automotive Group, the pace of development continues to pick up, in the form of powertrain electrification and the automation of driving. Bosch does not believe there is just one powertrain solution for the future; most of the cars on the world’s roads are still running on diesel and gasoline, and things will stay that way for the rest of the decade, Bohr noted. However, “slowly but surely”, the number of alternatives is growing.

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Mercedes-Benz to introduce smartphone-based Car-to-X technology in production vehicles by year-end

17 June 2013

Mercedes-Benz will introduce Car-to-X (C2X) communication technology into series production vehicles by the end of the year. Through the use of C2X communication, information on potential road traffic dangers can be passed on to drivers at an early stage so that they can take appropriate action and even help to avoid critical situations arising in the first place, the automaker noted. (Earlier post.)

As part of the initial deployment of the technology, Mercedes will use the Drive Kit Plus, which, in combination with a smartphone and the Digital DriveStyle app developed by Mercedes-Benz, turns the vehicle into a simultaneous transmitter and receiver of information.

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EADS demonstrating electric and hybrid aviation propulsion; innovative distributed propulsion series hybrid

17 June 2013

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E-Thrust is a “series hybrid” electrical distributed propulsion system concept using one gas power unit providing the electrical power for six fans for lower fuel consumption, fewer emissions and less noise. Click to enlarge.

The EADS Group—comprising Airbus, Astrium, Cassidian and Eurocopter—is demonstrating at the Paris Air Show 2013 a number of initiatives in the field of electric and hybrid propulsion, which it calls its “E-aircraft projects”.

The Group has developed and built a battery-electric general aviation training aircraft in cooperation with Aero Composites Saintonge (ACS), called E-Fan. EADS has also engineered together with Diamond Aircraft and Siemens an updated series hybrid electric motor glider, the Diamond Aircraft DA36 E-Star 2. EADS is also cooperating with Rolls-Royce on a future distributed propulsion system concept (DEAP) for full-size passenger aircraft.

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MIT team develops lower cost method to synthesize gamma-valerolactone for biofuels and chemicals

17 June 2013

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The new MIT proces converts furfural into GVL via a series of cascading (domino-like) reactions catalyzed by zeolites with Lewis and Brønsted acid sites. Zr-Beta and Al-MFI nanosheets generated GVL in 78% yield without the use of precious metals or molecular H2. Credit: Bui et al. Click to enlarge.

MIT chemical engineers have devised a cheaper way to synthesize gamma-valerolactone (GVL)—a potential feedstock of interest in the production of both fuels and fine chemicals—from biomass. (Earlier post.) GVL has more energy than ethanol and could be used on its own or as an additive or precursor to other fuels. GVL could also be useful as a “green” solvent or a building block for creating renewable polymers from sustainable materials.

The traditional process for converting plant material to GVL requires catalysts made from precious metals and must be done at very high pressures of hydrogen gas, which makes the process cost-prohibitive. The new MIT production method, described in the June 11 issue of the journal Angewandte Chemie, eliminates both of those obstacles.

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Nickel phosphide nanoparticle shown to be efficient non-noble metal electrocatalyst for hydrogen production

17 June 2013

In the electrochemical reduction of water to molecular hydrogen, the hydrogen evolution reaction (HER) is facilitated by noble metal catalysts such as platinum (Pt), which generate large cathodic current densities for this reaction at low overpotentials.

A research team led by Raymond Schaak, a professor of chemistry at Penn State University, now reports that nanoparticles of nickel phosphide (Ni2P)—the two component elements of which are inexpensive and earth-abundant—have demonstrated among the highest HER activity of any non-noble metal electrocatalyst reported to date. A paper on the work is published in the Journal of the American Chemical Society.

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Honda outlines short-term directions for China; local production of hybrids pushed back to 2016

17 June 2013

Jointly with Guangqi Honda Automobile Co., Ltd. and Dongfeng Honda Automobile Co., Ltd., Honda’s automobile production and sales joint venture companies in China, Honda Motor (China) Investment Co., Ltd. (HMCI), a wholly-owned Honda subsidiary, outlined Honda’s technology directions, plans for new model introductions, and increasing localization of research and development operation in China. Honda is planning to introduce 12 new models in China before the end of 2015.

Among the outlined directions was a statement that Honda “is striving to begin local production of hybrid models within the next three years”—i.e., by 2016. The company earlier had suggested that it would begin local production of hybrids, which it sells into the China market, in 2014. (Suggestions of local production of Honda hybrids in China go back further than that to at least 2004. Earlier post.)

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