1. Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 2G6, Canada
2. National Institute for Nanotechnology, National Research Council of Canada, 11421 Saskatchewan Drive, Edmonton, Alberta, Canada, T6G 2M9
3. Champion Technologies, 19827 Sunbridge Lane, Houston, Texas 77094, United States
4. ConocoPhillips Research and Development, ConocoPhillips, GB-02-280 Bartlesville Technology Center, Hwy 60 and 123, Bartlesville, Oklahoma 74004, United States
5. Statoil Research Centre, N-7004 Trondheim, Norway