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Power-to-Liquids

[Due to the increasing size of the archives, each topic page now contains only the prior 365 days of content. Access to older stories is now solely through the Monthly Archive pages or the site search function.]

Audi steps up research into carbon-neutral synthetic fuels with new e-diesel pilot plant; power-to-liquids

November 08, 2017

Audi is systematically building on its e-fuels strategy. (Earlier post.) Together with the partners Ineratec GmbH (earlier post) and Energiedienst Holding AG, the company has plans for a new pilot facility for the production of e-diesel in Laufenburg, in Canton Aargau (Switzerland). For the first time, the energy needed will be supplied from the renewable source of hydropower. The planned facility will have a capacity of around 400,000 liters (105,669 gallons US) per year.

For some years now, Audi has been conducting research into climate-friendly, CO2-based fuels such as e-gas, e-gasoline or synthetically manufactured e-diesel fuel. (Earlier post.) The company is now taking the next step in e-diesel production.

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BASF and bse Engineering sign development agreement to transform CO2 and renewable electricity into methanol; power-to-methanol

August 24, 2017

BASF and bse Engineering have signed an exclusive joint development agreement for BASF to provide custom-made catalysts for a new chemical energy storage process. This process will enable the economically viable transformation of excess power and off-gas carbon dioxide into methanol in small-scale, decentralized production units.

In addition to being used as a fuel or chemical feedstock, methanol, the simplest alcohol, can serve as long-term chemical energy storage. It offers energy densities of 4.4 kWh/l—almost six times that of hydrogen—and 5.5 kWh/kg—about 20 times the specific energy of advanced Li-ion batteries with silicon anodes. Put another way, 1 cubic meter (264 gallons) of methanol offers equivalent energy storage to 222 BMW i3 EVs, each with a 21.6 kWh battery.

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Bosch study highlights potential of e-fuels to reduce CO2 emissions

August 22, 2017

According to a new study by Bosch, the use of e-fuels—synthetic fuels based on renewable energy—in Europe by 2050 as a scheduled supplement to electrification could save up to 2.8 gigatons of CO2: three times Germany’s carbon-dioxide emissions in 2016.

The calculation is based on an assumed e-fuels blend of 1% in 2025, 10% in 2030, 40% in 2040 and completely replacing the fossil fuel share by 2050.

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Jülich evaluation of power-to-fuels recommends DME, OME3-5 and n-alkanes as diesel substitutes

July 13, 2017

An evaluation of the implementation possibilities of power-to-fuel (PTF) technologies by a team from Forschungszentrum Jülich GmbH in Germany recommends the PTF products DME, OME3-5 and n-alkanes as suitable diesel alternatives for the transportation sector. PTF processes essentially use renewable energy, CO2 and water to produce fuel, as in Audi’s targeted e-fuels projects. (Earlier post.) A paper on the Jülich study is published in the journal Fuel.

The simplest implementation strategy for such electrofuels would be a gradual market penetration by means of blending with conventional diesel, the authors suggested. Potential blending combinations highlighted in the paper include: fossil diesel + n-alkane cut; fossil diesel + OME3–5; Fossil diesel + n-alkane cut + 3-5; and n-alkane cut + OME3–5. The last blend—a suitable n-alkane cut mixed with OME3-5—has the greatest potential for increasing engine efficiency and reducing pollutant emissions. In addition, fossil diesel would no longer be required.

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TU Bergakademie Freiberg launches OTTO-R project with VW Group, Shell, OMV as partners; P2X for green gasoline

January 24, 2017

Researchers at the Technische Universität Bergakademie Freiberg, with partners from the automotive industry (Audi, VW) and the petroleum industry (Shell, OMV) have launched the €1.46-million OTTO-R project for the production of gasoline from “green” methanol produced from CO2, water and renewable electricity.

The new OTTO-R synthesis process is based on the Syngas-To-Fuel-Process (STF) developed by Chemieanlagenbau Chemnitz GmbH (CAC) at the Institute for Energy Process Engineering and Chemical Engineering (IEC). STF first converts natural gas-based synthesis gas to methanol in an isothermal reactor; the methanol is then transformed into high-octane gasoline via the intermediate methanol. Residual methanol and light hydrocarbons are separated downstream and recycled into the process.

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