Conversion study from lignocellulosic biomass and electric energy to H2 and chemicals

The efficient use of lignocellulosic biomass resources is of great significance to solve environmental pollution and energy crisis. Therefore, the understanding of the reactivity of lignin, hemicellulose , and cellulose , which are the major components of lignocellulosic biomass, on chemical and hydrogen conversion is necessary. So combined with proton exchange membrane electrolysis cell , using polyoxometalate (POM) as the oxidizing agent and electron stockpile carrier, the cyclic electrolytic hydrogen production and degradation of lignin, hemicellulose, and cellulose have been researched in detail. Among them, lignin degraded the best (96.81%), and the average Faradaic efficiency of the herein system was also the highest (95.93%). These results exhibit high conversion efficiency from electric energy to hydrogen energy . Simultaneously, without harsh conditions, lignin is mainly degraded to vanillin , hemicellulose is mainly converted to ester compounds, and cellulose is mainly converted to alcohol compounds, which provides an experiment basis for future chemical conversion.