摘要
考察了常压下ＣＳ２水解催化剂活性组分含量和温度对ＣＳ２水解的综合影响，并进行了ＣＳ２水解动力学研究，发现在所研究的４个系列催化剂中都存在着补偿效应．在反应温度范围内，Ａ、Ｅ两类催化剂符合“顺Ａｒｒｈｅｎｉｕｓ规律”；而Ｏ、Ｃ两类催化剂符合“反Ａｒｒｈｅｎｉｕｓ规律”．另外，针对多相表面催化反应过程，提出了修正的阿累尼乌斯公式，即：ｋ＝Ａ′ｅｘｐ（ΔＥ／ＲＴ）ｅｘｐ（－Ｅａ／ＲＴ），且从此角度对补偿效应作了解释，认为ｅｘｐ（ΔＥ／ＲＴ）是补偿效应中的补偿项．
The effect of active species content and temperature on the catalytic activity and kinetics of CS 2 hydrolysis was studied at atmospheric pressure.It was observed that compensation effect existed for the reactions over the four series of catalysts investgated.Series of A and E catalysts agree with 'para Arrheniuslaw',while series of C and O catalysts obey 'contra Arrheniuslaw'.The modified Arrhenius equation, k=A ′exp(Δ E/RT )exp(- Ea/RT ),was proposed for surface heterogeneous rate process and an explanation was given for compensation effect using exp (Δ E/RT )as the compensation term.
出处
《分子催化》
EI
CAS
CSCD
北大核心
1997年第2期138-144,共7页
Journal of Molecular Catalysis(China)
关键词
催化
水解
补偿效应
反应动力学
硫化碳
脱硫
CS 2 catalytic hydrolysis,Compensation effect,Modified Arrhenius equation,Reaction kinetics
