1. Center for Renewable Carbon, University of Tennessee, Knoxville, Tennessee 37996, United States
2. Sustainable Biofuels and Co-Products Research Unit, U.S. Department of Agriculture, Wyndmoor, Pennsylvania 19038, United States
3. Agricultural and Biological Engineering Department, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
4. X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
5. Materials Science and Engineering Department, University of Tennessee, Knoxville, Tennessee 37996, United States