Esterification catalysis using functionalized membranes

The driving force as key element to evaluate the pervaporation performance of multicomponent mixtures

“…An extensive research is being performed with the focus on pervaporation for dehydration of compounds or waste water treatment involving organic-water separations [1][2][3][4][5][6], and more recently, pervaporation of organic-organic mixtures, which is a more challenging separation due to the similar character of the compounds to be separated [7][8][9][10][11][12][13][14][15]. An example is transesterification reaction which is an equilibrium-limited reaction in which an ester and an alcohol are produced, involving a post-reaction organic-organic separation.…”

Esterification of acidified oil with methanol by SPES/PES catalytic membrane

“…Further, functional catalytic membranes could be easily prepared by polymer blending or hybridizing with other active components (Castanheiro et al, 2006;Hasanoglu et al, 2009;Shah and Ritchie, 2005;Zhu et al, 2010) and employed in esterifications of small molecular acids (David et al, 1992;Korkmaz et al, 2009;Liu et al, 2001). And that, Nguyen et al (2003) compared the catalytic activity of membranes obtained by blending polyvinyl alcohol (PVA) with different ionic polymers for the esterification reaction between n-propanol and propanoic acid.…”

Esterification of ethyl hexanoic acid using flow-through catalytic membrane reactor

“…The initiation step was permeating 1 N sulfuric acid through the membrane for 1 h. The second, poly merization, step was permeating a mixture of sty rene/toluene (12% styrene) for 10 min. Finally, the termination step was permeating again 1 N sulfuric acid for 1 h. All the steps were carried out under nitro gen pressure of 0.2 MPa and at room temperature [6,7,17,18]. …”