1. National Renewable Energy Laboratory, 15013 Denver W Parkway, Golden, Colorado 80401-3393, United States
2. Shell Global Solutions International, B.V., 1031 HW Grasweg 31, Poort 3, Amsterdam 1030 BN, Netherlands
3. Department of Chemical and Biological Engineering and Renewable and Sustainable Energy Institute RASEI, University of Colorado Boulder, Boulder, Colorado 80303, United States
4. Shell International Exploration & Production Inc., 3333 Highway 6 South, Houston, Texas 77082, United States