固定床催化及气相中和法转化木糖制备糠醛  

Preparation of Furfural Converted from Xylose via Fixed Bed Catalyzation and Gas Phase Neutralization

作　　者：隋光辉 程岩岩 刘欢 段亚军 王晓峰[1] 杨晓敏[1] 王子忱[1] SUI Guanghui;CHENG Yanyan;LIU Huan;DUAN Yajun;WANG Xiaofeng;YANG Xiaomin;WANG Zichen(College of Chemistry,Jilin University,Changchun 130012,China)

机构地区：[1]吉林大学化学学院,长春130012

出　　处：《高等学校化学学报》2018年第11期2544-2549,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:51502108);吉林省发展和改革委员会自主创新能力专项(批准号:2014N145);长春市科技计划项目(批准号:15SS06)资助~~

摘　　要：采用固定床催化及气相中和的方法优化了糠醛的洁净生产工艺.在固定床催化阶段主要考察了催化剂硫酸的浓度、原料木糖溶液的浓度及添加助催化剂对糠醛收率的影响;气相中和阶段主要考察了不同金属阳离子及阴离子对糠醛收率及糠醛液酸度的影响.实验结果表明,当固定床催化条件选定为2 mol/L硫酸,木糖溶液质量分数为10%,助催化剂Na Cl添加量80 g时,糠醛收率最高可达到74. 12%;在气相中和阶段,阴离子对提高糠醛收率的影响顺序为SO_4^(2-)>Cl->CO_3^(2-)>OH^-,而不同金属阳离子的影响不大.经过气相中和制备的糠醛液的酸度均符合国家标准GB/T1926.1-2009.Furfural was produced via fixed bed catalyzation and gas phase neutralization,in order to optimize the clean production process and solve the problem of the low resource utilization and environmental pollution in furfural industry.In the fixed bed catalytic process,the effects of acid concentration of catalyst sulfuric acid,the original concentration of xylose solution and added cocatalysts on the yield of furfural were investigated.In the gas phase neutralization process,the effects of metal cation and anion on the yield and the acidity of furfural were investigated.The results show that the yield of furfural can achieve 74.12%in the suitable conditions,which are 2 mol/L sulfuric acid,10%xylose solution(mass fraction),80 g NaCl.In the gas phase neutralization process,the influence of anion on the furfural yield is SO 2-4>Cl->CO 2-3>OH-,however,the metal cation had little effect.The acidity of furfural prepared by gas phase neutralization all conforms to the national standard GB/T 1926.1-2009.

关 键 词：糠醛 固定床催化 气相中和 木糖 

分 类 号：O643[理学—物理化学]