Loss of hemicellulose and inability to effectively decrystallize cellulose, result in low yield and high cost of sugars derived from biomass. Dilute sulfuric acid pretreatment could easily remove most of hemicellulose as sugars. （更多…）
为了充分利用原料和获得具有高浓度糖的生物质水解液，微晶纤维素和小桐子果壳在经过离子液体（[BMIM]Cl）处理后再进行稀酸水解。相比于没有经过预处理的微晶纤维素，离子液体处理后的纤维素在水解后，还原糖的得率和浓度提高了139%, 水溶性产物的得率提高了128%。 （更多…）
To make full utilization of raw material and achieve high concentration of sugars in the hydrolysate of biomass, microcrystalline cellulose and Jatropha hulls were pretreated by IL1-butyl-3-methylimidazoliuma chloride ([BMIM]Cl) before their subsequent dilute sulfuric acid hydrolysis. （更多…）
The conversion of green, cheap and renewable biomass materials into biofuels through thermochemical and biochemical methods is one of the key route to provide sustainable energy in future. The introduction of ultrasonic energy in biomass conversion could destroy the recalcitrance structure of lignocellulosic biomass at room temperature, facilitate the separation of complicated composition in raw materials, turn heterogeneous reactions into homogeneous or at least quasi- homogeneous reactions, and therefore essentially remove barriers that limited the efficiency and selectivity in biomass conversion. （更多…）
通过热化学和生物化学方法将绿色廉价、可再生的生物质原料转化为燃料是解决未来能源困境的重要途径。使用超声波能量实施过程强化，可以在室温条件下破坏顽抗的生物质结构，便利复杂化学组分的分离，将生物质的催化反应由非均相转变为均相或者准均相，从而在本质上改善制约生物质转化效率和选择性的因素。超声波具有特殊的物理特性，可以通过空化作用积累超声能量，然后通过空化气泡在微秒数量级的瞬间崩溃急剧释放能量。释放的能量强度足以破坏任何的化学键，打破多相体系的界面限制，强化反应过程的传质传热。因此，超声波处理既可以高效地破坏生物质结构，促进生物质原料的混合和反应，又不至于显著影响生物质反应的选择性，在生物燃料领域的研究中具有较大潜力。 （更多…）