A thermodynamic analysis of glycerol dry reforming has been performed by the Gibbs free energy minimization method as a function Of CO(2) to glycerol ratio, temperature, and pressure. Hydrogen and synthesis gas can be produced by the glycerol dry reforming. The carbon neutral glycerol reforming with greenhouse gas CO(2) could convert CO(2) into synthesis gas or high value-added inner carbon. Atmospheric pressure is preferable for this system and glycerol conversion keeps 100%. Various of H(2)/CO ratios can be generated from a flexible operational range. Optimized conditions for hydrogen production are temperatures over 975 K and CO(2) to glycerol ratios of 0-1. With a temperature of 1000 K and CO(2) to glycerol ratio of 1, the production of synthesis gas reaches a maximum, e.g., 6.4 mol of synthesis gas (H(2)/CO = 1:1) can be produced per mole of glycerol with CO(2) conversion of 33%. (C) 2009 Elsevier Ltd. All rights reserved.