Direct conversion of cellulose into polyols or H-2 over Pt/Na(H)-ZSM-5

作者：You Su Jin; Baek In Gu; Kim Yong Tae; Jeong Kwang Eun; Chae Ho Jeong; Kim Tae Wan; Kim Chul Ung; Jeong Soon Yong; Kim Tae Jin; Chung Young Min; Oh Seung Hoon; Park Eun Duck^*

来源：Korean Journal of Chemical Engineering, 2011, 28(3): 744-750.

DOI：10.1007/s11814-011-0019-3

• Cellulose
• Propylene Glycol
• Aqueous-phase Reforming
• H-2
• Pt/H-ZSM-5

The direct conversion of cellulose into polyols such as ethylene glycol and propylene glycol was examined over Pt catalysts supported on H-ZSM-5 with different SiO2/Al2O3 molar ratios. The Pt dispersion, determined by CO chemisorption and transmission electron microscopy (TEM), as well as the surface acid concentration measured by the temperature-programmed desorption of ammonia (NH2-TPD), increased with decreasing SiO2/Al2O3 molar ratio for Pt/H-ZSM-5. The total yield of the polyols, i.e., sorbitol, manitol, ethylene glycol and propylene glycol, generally increased with increasing Pt dispersion in Pt/H-ZSM-5. The one-pot aqueous-phase reforming of cellulose into H, was also examined over the same catalysts. The Pt catalyst supported on H-ZSM-5 with a moderate SiO2/Al2O3 molar ratio and a large external surface area showed the highest H, production rate. The Pt dispersion, surface acidity, external surface area and surface hydrophilicity appear to affect the catalytic activity for this reaction.

• 出版日期2011-3