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URN etd-0214115-151907 Statistics This thesis had been viewed 1066 times. Download 2 times. Author Zi-kai Huang Author's Email Address email@example.com Department Chemical Engineering Year 2014 Semester 1 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 83 Title Dehydration of Glycerol with n-Butanol to Produce Oxygenated Fuel over Amberlyst 70 Solid Catalyst Keyword dehydration reaction Keywords: glycerol cetane number di-n-butyl ether n-butanol n-butanol di-n-butyl ether cetane number Keywords: glycerol dehydration reaction Abstract One-step synthesis of an oxygenated fuel for blending with diesel and the cetane improver di-n-butyl ether (DBE) was performed using glycerol and n-butanol (NB) as raw materials and the solid acid Amberlyst-70 (A-70) as catalyst. In addition to the ether products from the etherification glycerol with NB, dehydration reactions between the NB components as well as the ether products with glycerol were found. The product mixture contained the following identified components: 1-butene (1B), di-n-butyl ether (DBE), 1-sec-butoxybutane (SBOB), mono-n-butoxy glycerol ethers (MBGEs), di-n-butoxy glycerol ethers (DBGEs), the unknown oxygenated hydrocarbons (OHCs) and the unconverted reactants, glycerol and NB. The water contained in the product mixture can be easily removed using a simple Dean-Stark distillation apparatus. The tailored oxygenated fuel contained MBGEs, DBGEs, and OHCs. The by-product DBE can be adopted as a cetane improver of diesel. With a 4:1 molar ratio of NB to glycerol, catalyst/glycerol weight ratios of 10 wt %, a reaction temperature of 473 K at the reaction time of 10 h, the objective of a high conversion of glycerol (93.24 %) and a high yield of MBGEs (20.60 %), DBGEs (14.73 %),and OHCs were achieved for a once-through operation. Advisor Committee Jyh-shyong Chang - advisor
Gow-bin Wang - co-chair
Yuh-jing Chiou - co-chair
Files Date of Defense 2014-01-30 Date of Submission 2015-02-16