Hydrolysis kinetics of benzyl phenyl ether in high temperature liquid water  

作　　者：Xiao Yu Wu Xiu Yang Lu 

机构地区：[1]Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China

出　　处：《Chinese Chemical Letters》2011年第6期733-737,共5页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.20976160);Zhejiang Provincial Natural Science Foundation of China(No.R4080110)

摘　　要：The application of high temperature liquid water（HTLW） to decomposition of lignin as efficient and green solution for phenolic compounds recovery was studied.Benzyl phenyl ether（BPE）,the lignin model compound,was treated at temperatures ranging from 220 to 250℃.BPE undergo hydrolysis in HTLW,and main products were phenol and benzyl alcohol with the minimum selectivities of 75.7%and 82.8%,respectively.Lower temperature led to higher selectivity in 220-250℃temperature range.The kinetics on BPE hydrolysis was studied and the activation energy was determined as 150.3±12.5 kJ/mol with the first-order kinetic equations.Based on products distribution,the reaction mechanism for decomposition of benzyl phenyl ether was proposed.The investigated process provides insights into the design of a commercial method for utilization of lignin.The application of high temperature liquid water（HTLW） to decomposition of lignin as efficient and green solution for phenolic compounds recovery was studied.Benzyl phenyl ether（BPE）,the lignin model compound,was treated at temperatures ranging from 220 to 250℃.BPE undergo hydrolysis in HTLW,and main products were phenol and benzyl alcohol with the minimum selectivities of 75.7%and 82.8%,respectively.Lower temperature led to higher selectivity in 220-250℃temperature range.The kinetics on BPE hydrolysis was studied and the activation energy was determined as 150.3±12.5 kJ/mol with the first-order kinetic equations.Based on products distribution,the reaction mechanism for decomposition of benzyl phenyl ether was proposed.The investigated process provides insights into the design of a commercial method for utilization of lignin.

关 键 词：HYDROLYSIS KINETICS Benzyl phenyl ether High temperature liquid water Lignin model compound 

分 类 号：O643.3[理学—物理化学] O621.259.11[理学—化学]