Abstract
The synthesis of isobutyl propionate from prop ionic acid and isobutyl alcohol with rare earth solid super acid SO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2-</sup> /TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> /La <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3+</sup> as environmentally friendly catalyst was studied. The influential factors of reaction were investigated. Results show that the appropriate conditions are: molar ratio of isobutyl alcohol to prop ionic acid was 2 : 1; Catalyst's weight was 0.7g(the amount of 0.1 molar prop ionic acid), Cyclohexane is used as water-carrying reagent with 0.6 mL, Reaction time was 2.5 hour. The esterification rate of isobutyl propionate is about 98.68 %.
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