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

Abstract

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 H2 concentration and anticarbon ability. H2 content and yield increased from 54.77% to 60.32% and 18.91 mg/g sample to 22.47 mg/g sample, respectively, when γ-Al2O3 mixed MCM-41 supports were used instead of single γ-Al2O3. Moreover, the amount of carbon deposition significantly decreased from 9.79% to 5.85%. The admixture of support γ-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.

Hydrogen from Rice Husk Pyrolysis Volatiles via Non-Noble Ni–Fe Catalysts Supported on Five Differently Treated Rice Husk Pyrolysis Carbon Supports

“…The temperature was slowly heated to 800 °C at a rate of 10 °C/min, and ammonia was flushed out with 50 mL/min N 2 . The Fourier transmission infrared (FT-IR) spectra of the surface morphology of the fresh catalysts and the carbon deposited on the spent catalysts were analyzed in the same way in our previous research …”

“…The Fourier transmission infrared (FT-IR) spectra of the surface morphology of the fresh catalysts and the carbon deposited on the spent catalysts were analyzed in the same way in our previous research. 23 Scanning electron microscopy (SEM) (Hitachi-S4800 FESEM) was used to investigate the surface morphology of the catalysts and the carbon deposition on the used catalysts. The acid-exchange capacity was determined by titration with NaOH to measure the acid contents for catalysts.…”