Add time:08/31/2019 Source:sciencedirect.com
The alkaline hydrolysis of DIMETHYL TEREPHTHALATE (cas 120-61-6) (DMT) in the presence of [LiAl2(OH)6]Cl has been investigated to demonstrate a possible application of anion exchange facility of layered double hydroxides (LDHs) to control chemical reactions. The results show that (i) in the alkaline hydrolysis of DMT in the presence of [LiAl2(OH)6]Cl, most of the interlayer Cl− of [LiAl2(OH)6]Cl is quickly replaced by OH− in the alkaline solution because the LDH host favors OH− more; (ii) the alkaline hydrolysis of DMT in the presence of [LiAl2(OH)6]Cl is faster than the reaction of DMT and [LiAl2(OH)6]OH; (iii) The hydrolysis of DMT in a buffer solution of pH≈8 takes longer time to reach equilibrium than the alkaline hydrolysis of DMT in the presence of [LiAl2(OH)6]Cl. It is believed that the selective anion exchange chemistry of the LDH plays a key role in storage and controlled release of active reactant, that is, OH−, thus make the hydrolysis proceeds in a controlled way.
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