摘要
以玉米秸秆为原料、NaOH为造孔剂,采用碳化-活化制备多孔秸秆碳磺酸(PSCSA),用于纤维素的水解。通过X射线衍射(XRD)、傅里叶红外光谱(FTIR)、N_(2)吸脱附分析(BET)、扫描电子显微镜(SEM)等对PSCSA进行表征分析,表明PSCSA为不定形碳结构并有部分微弱的石墨结晶,含有羟基(-OH)、羧基(-COOH)、磺酸基(-SO_(3)H),且表面为多孔形貌。在多孔秸秆碳磺酸添加量为2.5g·g^(-1)(纤维素)、底物纤维素浓度为3mg·mL^(-1)、190℃水解1h的条件下,多孔秸秆碳磺酸催化纤维素水解还原糖得率可达60.61%。
Porous straw carbon sulfonic acid was prepared by carbonization-activation for cellulose hydrolysis using corn stover as the raw material and NaOH as the pore-forming agent.The characterization of PSCSA by XRD,FTIR,BET and SEM showed that PSCSA was an amorphous carbon structure with some weak graphite crystals,and contains hydroxyl(-OH),carboxyl(-COOH),sulfonic acid group(-SO_(3)H),and the surface is porous morphology.When the addition amount of porous straw carbon sulfonic acid was 2.5g·g^(-1)(cellulose)and the concentration of substrate cellulose was 3mg·mL^(-1),the yield of reducing sugar obtained from cellulose hydrolysis catalyzed by porous straw carbon sulfonic acid was up to 60.61%at 190℃for 1 hour.
作者
陆佳
苏小红
刘泽
LU Jia;SU Xiao-hong;LIU Ze(Heilongjiang Institute of Energy and Environment,Harbin 150027,China)
出处
《化学工程师》
CAS
2024年第4期1-5,共5页
Chemical Engineer
基金
黑龙江省自然科学基金联合引导项目(LH2021B027)。
关键词
纤维素
水解
多孔秸秆碳磺酸
还原糖
cellulose
hydrolysis
porous straw carbon sulfonic acid
reducing sugar
