In this work the hydrolysis rate constants(k) of a series of Aliphatic esters in different concent of ethanol solution were studied by conductometry,and some correlative analysis were done about the relation among the...In this work the hydrolysis rate constants(k) of a series of Aliphatic esters in different concent of ethanol solution were studied by conductometry,and some correlative analysis were done about the relation among the molecular structure of a series of Aliphatic esters,thecondition of hydrolysis and hydrolysis rate constants(k).The quantificational mathematic equation:lgk=a+blg PEI(R)+clgε,among hydrolysis rate constants(k),the polarizability effect index(PEI) of alkyl group(R)and dielectric constant(ε) and this behavior was deduced.Simultaneously,the effect of FOS on hydrolysis rate constants(k) of Aliphatic esters in 39.9%(v/v) ethanol solution were measured in above meaning.The quantificational mathematic expression between hydrolysis rate constants(k) of ester and the concentration of FOS(M):k=k′/(1+AM),was deduced and validated.The result showed that FOS inhibited the hydrolysis reaction of Aliphatic esters.展开更多
文摘In this work the hydrolysis rate constants(k) of a series of Aliphatic esters in different concent of ethanol solution were studied by conductometry,and some correlative analysis were done about the relation among the molecular structure of a series of Aliphatic esters,thecondition of hydrolysis and hydrolysis rate constants(k).The quantificational mathematic equation:lgk=a+blg PEI(R)+clgε,among hydrolysis rate constants(k),the polarizability effect index(PEI) of alkyl group(R)and dielectric constant(ε) and this behavior was deduced.Simultaneously,the effect of FOS on hydrolysis rate constants(k) of Aliphatic esters in 39.9%(v/v) ethanol solution were measured in above meaning.The quantificational mathematic expression between hydrolysis rate constants(k) of ester and the concentration of FOS(M):k=k′/(1+AM),was deduced and validated.The result showed that FOS inhibited the hydrolysis reaction of Aliphatic esters.
