Etherification of Glycerol with Tert-Butanol Catalysed by a Solid Acid Catalyst

• Main Authors: Ying-Hong Lin, 林盈宏
• Other Authors: Jyh-Shyong Chang
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/92405755806988566501

碩士 === 大同大學 === 化學工程學系(所) === 99 === The etherification of glycerol with tert-butanol on the sulfonated carbon catalyst (HS-R) provides a way to transform glycerol into a value added product to be used as an oxygenated additive to diesel fuels. With a 4:1 molar ratio of tert-butanol to glycerol, a 1:10 weight ratio of catalysts to glycerol, the etherification reaction glycerol with tert-butanol in an autoclave under autogenic pressures were performed over the reaction temperatures ranged from 363 K to 473 K at the reaction time of 18 hours. We found that under the reaction temperature (473 K), a separation of oil phase and water phase of the product mixture can be achieved. The distillated oil phase product of the product mixture can increase the cetane index 50.1 of the pure petroleum diesel to 52.6 of the mixture of a 1:5 volume ratio of the distillated oil phase product to the pure petroleum diesel. Therefore, the distillated oil phase product can be a candidate of oxygenate additive for diesels (bio or petroleum).