An integrated catalytic approach for the production of hydrogen by glycerol reforming coupled with water-gas shift

作者：Kunkes Edward L; Soares Ricardo R; Simonetti Dante A; Dumesic James A^*

来源：Applied Catalysis B: Environmental , 2009, 90(3-4): 693-698.

DOI：10.1016/j.apcatb.2009.04.032

• Water-gas shift
• Reforming
• Hydrogen
• Glycerol

Reaction kinetics measurements of glycerol conversion on carbon-supported Pt-based bimetallic catalysts at temperatures from 548 to 623 K show that the addition of Ru, Re and Os to platinum significantly increases the catalyst activity for the production of synthesis gas (H(2)/CO mixtures) at low temperatures (548-573 K). Based on this finding, we demonstrate a gas phase catalytic process for glycerol reforming, based on the use of two catalyst beds that can be tuned to yield hydrogen (and CO(2)) or synthesis gas at 573 K and a pressure of 1 atm. The first bed consists of a carbon-supported bimetallic platinum-based catalyst to achieve conversion of glycerol to a H(2)/CO gas mixture, followed by a second bed comprised of a catalyst that is effective for water-gas shift, such as 1.0% Pt/CeO(2)/ZrO(2). This integrated catalytic system displayed similar to 100% carbon conversion of concentrated glycerol solutions (30-80 wt.%) into CO(2) and CO, with a hydrogen yield equal to 80% of the amount that would ideally be obtained from the stoichiometric conversion of glycerol to H(2) and CO followed by equilibrated water-gas shift with the water present in the feed.

• 出版日期2009-8-17