Experiments on Reaction of Glycerol and Tert-Butyl Alcohol at Elevated Temperatures

• Main Authors: Yu-Heng Lai, 賴昱衡
• Other Authors: Jyh-Shyong Chang
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/xft5e4

碩士 === 大同大學 === 化學工程學系(所) === 102 === High-temperature batch reactions of glycerol and tert-butyl alcohol using a solid catalyst Amberlyst-70 were performed in this study. Six experiments were located uniformly over the operating conditions (reaction temperature range (180℃-205℃), TBA/GLY molar ratio (1:1- 6:1), and catalyst weight (6wt% - 16wt% by weight of glycerol)). The components of the product organic phase consisted of unconverted TBA, isobutylene (IB), 2,2,4-trimethyl-1-pentene,2,4,4-trimethyl-2-pentene(DIBs),2,2,4,6-pentamethyl-3-heptene,2,2,6,6-tetramethyl-4-methyleneheptane (TIBs) and the oxygen-limited hydrocarbons (HCs). The product aqueous phase was composed of water, unconverted TBA and glycerol. Among the six uniformly distributed experiments, the optimized operating conditions were at the reacting temperature (205℃), the catalyst loading (12wt% of the initial loading of glycerol) and the TBA/GLY molar ratio (5). A maximal conversion of glycerol (98.1%) and the weight ratio of the product organic phase to the initial feed (67.1%) can be achieved.