Citation: Gao Zi, Chen Jian-Min, Tang Yi, Hua Wei-Ming. Characterization of Solid Superacidity by Butane Isomerization Reaction at Ambient Temperature[J]. Acta Physico-Chimica Sinica, 1994, 10(08): 698-703. doi: 10.3866/PKU.WHXB19940806
用常温正丁烷异构化反应表征固体超强酸性
研究了室温下固体超强酸催化剂上正丁烷反应，发现转化率低于50％时，异构化选择性高于95％，正丁烷异构化反应动力学符合一级可逆反应规律，固体超强酸的酸强度与正丁烷异构化反应转化率和速率常数呈顺变关系，与反应表现活化能呈逆变关系．报出了一种新的表征固体超强酸性的实验方法．
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关键词:
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SO2-4/ZrO2体系
- / 固体超强酸
- / 正丁烷异构化反应
- / 超强酸性表征
English
Characterization of Solid Superacidity by Butane Isomerization Reaction at Ambient Temperature
Butane reactions on SO~(2-)_4/ZrO_2 type solid superacids at ambient temperature were studied. The butane isomerization selectivity is higher than 95% while the total reaction conversion is lower than 50%. The rate of the butane isomerization reaction follows the rate law of a first-order reversible reaction. The reaction conversion, rate constant and activation energy of the isomerization reaction are dependent on the superacidity of the solid catalysts. As the H_o of the catalysts is increased, the reaction conversion and rate constant are increased and the activation energy is decreased. The butane isomerization at ambient temperature is a od probe reaction for the characterization of solid superacidity.
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