title: Butyric acid esterification kinetics over Amberlyst solid acid catalysts: the effect of alcohol carbon chain length.
abstract: The liquid phase esterification of butyric acid with a series of linear and branched alcohols is examined. Four strong cation exchange resins, Amberlyst™ 15, Amberlyst™ 36, Amberlyst™ BD 20, and Amberlyst™ 70, were used along with para-toluenesulfonic acid as a homogeneous catalyst. The effect of increasing alcohol carbon chain length and branching on esterification rate at 60°C is presented. For all catalysts, the decrease in turnover frequency (TOF) with increasing carbon chain length of the alcohol is described in terms of steric hindrance, alcohol polarity, and hydroxyl group concentration. The kinetics of butyric acid esterification with 2-ethylhexanol using Amberlyst™ 70 catalyst is described with an activity-based, pseudo-homogeneous kinetic model that includes autocatalysis by butyric acid.
authors: Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI 48824, United States.
authors: Venkata K S
authors: VK
authors: Pappu
authors: Victor
authors: V
authors: Kanyi
authors: Arati
authors: A
authors: Santhanakrishnan
authors: Carl T
authors: CT
authors: Lira
authors: Dennis J
authors: DJ
authors: Miller
mesh_terms: D000438:Alcohols / Q000737:chemistry*; D020148:Butyric Acid / Q000737:chemistry*; D002411:Cation Exchange Resins / Q000737:chemistry*; D004951:Esterification; D007700:Kinetics; D013343:Styrenes / Q000737:chemistry*
chemical_list: D000438:Alcohols; D002411:Cation Exchange Resins; D013343:Styrenes; C528218:amberlyst-15; D020148:Butyric Acid