Amberlyst-15催化木糖醇醚化反应研究  

Research on the etherification reaction of xylitol catalysed by Amberlyst-15

作　　者：范昊霖 郝会娟 张伟 常艳红 FAN Hao-lin;HAO Hui-juan;ZHANG Wei;CHANG Yan-hong(BGRIMM Explosives&Blasting(Cangzhou)Technology Co.,Ltd.,Cangzhou 061108,China;BGRIMM Explosives&Blasting Technology Co.,Ltd.,Beijing 100160,China)

机构地区：[1]北矿亿博(沧州)科技有限责任公司,河北沧州061108 [2]北京北矿亿博科技有限责任公司,北京100160

出　　处：《化学工程师》2024年第4期10-13,共4页Chemical Engineer

基　　金：河北省院士合作重点单位基金项目(V1678763253282);矿冶科技集团青年科技创新基金项目(04-2314)。

摘　　要：以酸性离子交换树脂Amberlyst-15(A-15)为催化剂,通过跟踪测定产物羟值,研究了木糖醇的醚化脱水规律。考察了反应时间、催化剂用量、反应温度对木糖醇醚化过程的影响。采用傅里叶变换红外光谱法(FTIR)和气相色谱-质谱联用法(GC-MS)分析了木糖醇醚化产物的结构。结果表明,当A-15用量为体系质量的0.4%~0.5%、反应温度为140~155℃、真空度为-0.1MPa、反应时间为1.5~2h时,可以将醚化产物的羟值控制在1250~1450mg KOH·g^(-1)范围内。The etherification law of xylitol was studied using acidic ion exchange resin Amberlyst-15(A-15)as a catalyst and the hydroxyl values of the products were tracked and measured.The effects of reaction time,catalyst dosage,and reaction temperature on the etherification process of xylitol were investigated.The structure of the xylitol etherification products were analyzed using fourier transform infrared spectroscopy(FTIR)and gas chromatography-mass spectrometry(GC-MS).The experimental results showed that the hydroxyl value of xylitol could be controlled at range of 1250~1450mg KOH·g^(-1) at a vacuum degree of-0.1MPa and 140~150℃for 1.5~2h with 0.4wt%~0.5wt%A-15 of the system.

关 键 词：木糖醇 Amberlyst-15 醚化 羟值 

分 类 号：TQ233.1[化学工程—有机化工]