摘要：【中文】本发明公开了一种基于二元催化乙醇法的木素分离方法，首先获取木质纤维素的水热固相产物；将过氧化氢与乙醇溶液混合，配制得到反应溶液；将水热固相产物、反应溶液及氢氧化钠混合反应后，得到固液混合产物，过滤分相，得到初步固相产物及液相产物；采用乙醇溶液对初步固相产物进行洗涤，过滤分相后，得到固相产物；采用水对固相产物进行洗涤，干燥后，得到粗纤维素；对液相产物进行稀释，酸化，静置，沉淀，过滤，干燥后得到乙醇木素；本发明通过添加过氧化氢及氢氧化钠二元催化剂，二元催化体系协同作用断裂木素大分子中的醚键，使木素降解为小分子溶解到乙醇溶液中，在保证纤维素得率较高的同时，有效提高了木素的脱除率。 【EN】The invention discloses a lignin separation method based on a binary catalytic ethanol method, which comprises the following steps of firstly, obtaining a hydrothermal solid-phase product of lignocellulose; mixing hydrogen peroxide and an ethanol solution to prepare a reaction solution; mixing the hydrothermal solid-phase product, the reaction solution and sodium hydroxide for reaction to obtain a solid-liquid mixed product, and filtering and phase splitting to obtain a primary solid-phase product and a liquid-phase product; washing the preliminary solid-phase product by using an ethanol solution, and filtering and phase splitting to obtain a solid-phase product; washing the solid-phase product by using water, and drying to obtain crude cellulose; diluting the liquid phase product, acidifying, standing, precipitating, filtering and drying to obtain the ethanol lignin; according to the invention, by adding the hydrogen peroxide and sodium hydroxide binary catalyst, the binary catalytic system synergistically acts to break ether bonds in large molecules of lignin, so that the lignin is degraded into small molecules and dissolved in ethanol solution, and the removal rate of the lignin is effectively improved while the yield of cellulose is ensured to be higher.

摘要：【中文】本发明公开了一种用于海水淡化的CNF基同源异质光热材料及其制备方法，将纳米纤维素、胶黏剂、泡孔调节剂及水混合，配制得到混合悬浮液；对混合悬浮液进行发泡处理，得到纳米纤维素湿泡沫体系，对其进行定向冷冻，干燥，得到纳米纤维素基泡沫材料；对隔绝氧气处理后的纳米纤维素基泡沫材料的某一表面进行碳化处理，得到所述的用于海水淡化的CNF基同源异质光热材料；本发明采用纳米纤维素为原材料，辅以胶黏剂，通过发泡方式制备得到泡沫材料，然后进行表面碳化；利用被炭化的上层表面实现宽谱高效的光吸收和快速蒸汽溢出，下层多孔结构实现供水和隔热，其光吸收层与载体层之间自然过渡，一体成型，无真正界面；原料丰富无污染，具有可生物降解性能。 【EN】The invention discloses a CNF-based homologous heterogeneous photothermal material for seawater desalination and a preparation method thereof, wherein nanocellulose, an adhesive, a foam cell regulator and water are mixed to prepare a mixed suspension; foaming the mixed suspension to obtain a wet nanocellulose foam system, directionally freezing and drying the wet nanocellulose foam system to obtain a nanocellulose-based foam material; carbonizing a certain surface of the oxygen-isolated nanocellulose-based foam material to obtain the CNF-based homologous heterogeneous photothermal material for seawater desalination; according to the invention, nano-cellulose is used as a raw material, an adhesive is used as an auxiliary material, a foam material is prepared in a foaming manner, and then surface carbonization is carried out; the carbonized upper layer surface is utilized to realize wide-spectrum efficient light absorption and rapid steam overflow, the lower porous structure realizes water supply and heat insulation, the light absorption layer and the carrier layer are naturally transited and integrally formed, and no real interface exists; the raw materials are rich and pollution-free, and the biodegradable plastic has biodegradable performance.