Castanheiro, Jose published the artcileChitosan with Sulfonic Groups: A Catalyst for the Esterification of Caprylic Acid with Methanol, Name: Methyl octanoate, the main research area is chitosan sulfonic group catalyst esterification caprylic acid methanol; chitosan; esterification; heterogeneous catalyst.
Esterification of caprylic acid with methanol was performed over chitosan with sulfonic acid groups, as a catalyst, at 60°C. The sulfonic acid groups were introduced into chitosan (CH) by using chlorosulfonic acid. Catalysts were characterized by SEM (SEM), elemental anal., thermogravimetric anal. (TGA), X-ray diffraction (XRD), Fourier transform IR spectroscopy (FTIR), and acid-base titration Catalytic activity increased with the amount of sulfonic acid groups present on chitosan. The 4-CH-SO3H catalyst (chitosan with sulfonic acid groups-sample 4 prepared) showed the highest activity of all materials. The esterification of caprylic acid with methanol was optimized using a 4-CH-SO3H catalyst. Under optimized reaction conditions, it was found that, at 60°C, with 0.2 g of catalyst loading and with a molar ratio methanol to caprylic acid equal 1:95, a caprylic acid conversion of about 83%, after 4 h could be obtained. Catalytic stability of the 4-CH-SO3H material was evaluated through consecutive batch runs. After the second batch, the catalytic activity stabilized.
Polymers (Basel, Switzerland) published new progress about Acid-base titration. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Name: Methyl octanoate.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics