摘要
研究了某些有机物介质对Keggin结构铜单取代硅钨酸钾催化H2 O2 分解反应速率的影响。发现在H2 O2水溶液中加入环己烷、1,2 二氯乙烷、乙腈均会降低H2 O2 的催化分解速率 ,但加入相转移剂CTMAB则可促进H2 O2 在环己烷中的催化分解 ;在水 环己烷 CTMAB体系中 ,Keggin结构铜单取代硅钨酸钾催化H2 O2 分解反应的活化能为 5 2 .9kJ/mol。
The rate of H 2O 2 decomposition catalyzed by Cu-substituter Keggin type potassium silico-tungstate in water and organic solvent such as cyclohexane, acetonitrile or 1,2-dichloroethane was studied. The experimental results indicated that the rate of the catalytic decomposition of H 2O 2 was suppresed when organic solvents were added to H 2O 2 aq. solution, but the addition of phase transfer agent cetyl trimethyl ammonium bromide(CTMAB) could promote the catalytic decomposition of H 2O 2 in cyclohexane. The activation energy of H 2O 2 decomposition in the water-cyclohexane-CTMAB system catalyzed by Cu-substituted Keggin type potassium silicotungstate is 52.9 kJ/mol.
出处
《精细石油化工》
CAS
CSCD
北大核心
2004年第1期8-11,共4页
Speciality Petrochemicals
基金
广西工学院科研基金资助项目 (编号 5 0 0 0 88)
