| ZrO2／SO4^2—超强酸体系形成过程的研究 |
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| 引用本文： | 高滋,陈建民.ZrO2／SO4^2—超强酸体系形成过程的研究[J].高等学校化学学报,1992,13(12):1498-1502. |
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| 作者姓名： | 高滋 陈建民 |
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| 作者单位： | 复旦大学化学系 上海200433
(高滋，陈建民)，复旦大学化学系 上海200433(唐颐) |
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| 摘 要： | 本文用XRD、TG-DTG-DTA、SEM和化学分析等多种实验手段研究了浸渍H_2SO_4的无定形ZrO_2在不同焙烧温度下的晶化和相变,失水和失硫等过程.实验结果表明,这些过程与超强酸的形成密切相关,在ZrO_2/SO_4~(2-)超强酸体系中不存在水和游离H_(2)SO_(4),体系超强酸强度最高时ZrO_2呈四方晶相,晶体表面约有略少于1/3的Zr原子与SO_4~(2-)根相结合.
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| 关 键 词： | 超强酸 二氧化锆 硫酸根 |
Studies on the Formation of ZrO_2/SO_4~(2-)Superacid System |
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| Gao Zi,Chen Jian-min,Tang Yi.Studies on the Formation of ZrO_2/SO_4~(2-)Superacid System[J].Chemical Research In Chinese Universities,1992,13(12):1498-1502. |
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| Authors: | Gao Zi Chen Jian-min Tang Yi |
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| Abstract: | The crystallization,phase transition,dehydration and desulfuration of amorphous ZrO2 impregnated by H2SO4 under various calcination temperatures were studied with XRD,TG-DTG-DTA,SEM and chemical analysis methods.It was found that all these processes are evidently related with the formation of superacid.There are no water and free H2SO4 present in the ZrO2/SO42-superacid system,and the acid strength of the superacid system reaches the maximum as the amorphous ZrO2 transforms into a tetragonal crystal phase and slightly less than 1/3 of the surface Zr atoms are bonded with SO42-radicals. |
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| Keywords: | ZrO_2/SO_4~(2-)system Superacid Synthesis |
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