Adsorption of acetic acid from aqueous solution onto silica gel and molecular sieve and activated carbon was investigated to evaluate the effects of initial acetic acid concentration, contact time, nature of adsorbent and adsorbent dose on the removal of acetic acid systematically. Then High conversion of homogeneous catalysts such as paratoluene sulfonic acid (ptsa) makes them attractive for processes such as esterification of 2-ethyl hexanol (2-EOH) and acetic acid (AA) to produce 2-ethylhexyl acetat as an example of heavy ester. To remove the water that is produced in the reaction. A wather separation system was developed with azeotrope distillation. Additionally, because of new system designed for separation of homogeneous catalyst, use of PTSA is feasible. The effects of different variables such as mole ratio of alcohol to acid, and molar ratio of catalyst to 2EOH were studies. At the optimal values ratio of AA to 2-EOH of 2, and acid molar ratio to 2EOH of 5%. respectively, the conversion of 99% wase achieved. GC-FID wase used for measurements of constituents.
