Dimethyl Ether Synthesis from Renewables

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Program:
REFUEL
Award:
$2,300,000
Location:
Des Plaines, Illinois
Status:
ALUMNI
Project Term:
06/01/2017 - 03/31/2022

Technology Description:

Gas Technology Institute (GTI) will develop a process for producing dimethyl ether (DME) from renewable electricity, air, and water. DME is a clean-burning fuel that is easily transported as a liquid and can be used as a drop-in fuel in internal combustion engines or directly in DME fuel cells. Ultimately carbon dioxide (CO2) would be captured from sustainable sources, such as biogas production, and fed into a reactor with hydrogen generated from high temperature water splitting. The CO2 and hydrogen react on a bifunctional catalyst to form methanol and a subsequently DME. To improve conversion to DME, GTI will use a novel catalytic membrane reactor with a zeolite membrane. This reactor improves product yield by shifting thermodynamic equilibrium towards product formation and decreases catalyst deactivation and kinetic inhibition due to water formation. The final DME product is separated and the unreacted chemicals are recycled back to the catalytic reactor. Each component of the process is modular, compact, and requires no additional inputs aside from water, CO2, and electricity, while the entire system is designed from the ground up to be compatible with intermittent renewable energy sources.

Potential Impact:

If successful, developments from REFUEL projects will enable energy generated from domestic, renewable resources to increase fuel diversity in the transportation sector in a cost-effective and efficient way.

Security:

The U.S. transportation sector is heavily dependent on petroleum for its energy. Increasing the diversity of energy-dense liquid fuels would bolster energy security and help reduce energy imports.

Environment:

Liquid fuels created using energy from renewable resources are carbon-neutral, helping reduce transportation sector emissions.

Economy:

Fuel diversity reduces exposure to price volatility. By storing energy in hydrogen-rich liquid fuels instead of pure hydrogen in liquid or gaseous form, transportation costs can be greatly reduced, helping make CNLFs cost-competitive with traditional fuels.

Contact

ARPA-E Program Director:
Dr. Kirk Liu
Project Contact:
Shiguang Li
Press and General Inquiries Email:
ARPA-E-Comms@hq.doe.gov
Project Contact Email:
sli@gti.energy

Partners

Missouri University of Science and Technology
Rensselaer Polytechnic Institute
Medical University of South Carolina

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Release Date:
04/26/2016