Influence of Mixed Supports on the Steam Catalytic Reforming of Wood Vinegar

摘要

Obtaining hydrogen from renewable energy is a novel method. Instead of single support catalysts, mixed zeolite supports were used in this study to obtain hydrogen by steam catalytic reforming of wood vinegar. This technique improves the activity and extends the life of catalysts. The results show that, compared with a single support catalyst, mixed supports are beneficial for improving H-2 concentration and anticarbon ability. H-2 content and yield increased from 54.77% to 60.32% and 18.91 mg/g sample to 22.47 mg/g sample, respectively, when gamma-Al2O3 mixed MCM-41 supports were used instead of single gamma-Al2O3. Moreover, the amount of carbon deposition significantly decreased from 9.79% to 5.85%. The admixture of support gamma-Al2O3 with MCM-41 optimized the diversity of acidic intensity, structure, pore characteristics, and heat and mass transfer ability of mixed catalysts, and improved the reactivity and resistance to carbon deposition of catalysts.