生物油催化酯化及其存储稳定性研究  

BIO-OIL CATALYTIC ESTERIFICATION AND ITS STABILITY WITH STORAGE

作　　者：费雯婷[1] 刘荣厚[1] 周维奇[1] 尹仁湛[1] 

机构地区：[1]上海交通大学农业与生物学院生物质能工程研究中心,上海200240

出　　处：《太阳能学报》2014年第11期2177-2184,共8页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51176121);"十二五"国家科技支撑计划(2011BAD22B07)

摘　　要：以CD650阳离子交换树脂为催化剂,通过三因素Box-Behnken方法设计甲醇和乙酸的模型反应并优化催化酯化反应条件,在最优反应条件下进行生物油和甲醇的催化酯化反应及生物油存储稳定性研究。通过测试空白组、甲醇组和酯化组三组生物油的理化指标发现:存储后酯化组灰分和密度分别为0.1128%和1.1349 g/mL,为各组最低,热值为16.412 MJ/kg,为各组最高。此外,存储后酯化组pH值为2.61,含水率为28.14%(质量分数),运动黏度(40℃)为11.29 mm^2/s,均为各组最低。各组生物油傅里叶变换红外光谱及气相色谱质谱联用分析结果表明,酯化组内酯类成分上升,有机酸含量下降。生物油经催化酯化后品质得到提升。The model reaction catalyzed by cation exchange resin between methanol and acetic acid was designed by the three factors Box-Behnken method to achieve optimized reaction conditions. The esterification between bio-oil and methanol was carried out under the optimized reaction conditions and the properties of the bio-oils during storage were studied. Typical properties of blank （crude bio- oil）, group M （bin-oil with 10% methanol without esterification） and group E （bio-oil with 10% methanol after esterification） were measured. Results showed that after storage, the ash content and density of group E were the lowest ones among the three groups, which were 0.1128% and 1.1349 g/mL, respectively. Its heating value was 16.412 MJ/kg, which is the highest one. In addition, after storage, the pH value, water content and viscosity （40 ℃） of group E were 2.61, 28.14% and 11.29 mm^2/s, respectively, which were the lowest ones. The FT1R and GC-MS analysis also convinced that the content of ester was increased while the content of the organic acid was decreased in group E. The quality ofbio-oil has been improved after catalytic esterification.

关 键 词：生物油 催化酯化 阳离子交换树脂 稳定性 

分 类 号：TK6[动力工程及工程热物理—生物能]