1. Corporate Strategic Research, ExxonMobil Research and Engineering Company, Annandale, New Jersey 08801, United States
2. National High Magnetic Field Laboratory, Florida State University, 1800 East Paul Dirac Drive, Tallahassee, Florida 32310, United States
3. Future Fuels Institute, Florida State University, 1800 East Paul Dirac Drive, Tallahassee, Florida 32310, United States