Interaction between ammonium sulfate-iron oxide shown by ESR and Mössbauer spectroscopy |
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| Authors: | RongSheng Li JingFeng Chen Hua Yang WuYang Zhang Quan Wei MingZhi Jin YingGuang Zheng |
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| Affiliation: | (1) Department of Chemistry, Jilin University, Changchun, PR China;(2) Testing Center, Jilin University, Changchun, PR China |
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| Abstract: | The ammonium sulfate-iron oxide system treated at different temperatures has been characterized by ESR, IR and Mössbauer spectroscopy. Results show that during the heat treatment some interaction between ammonium sulfate and iron oxide takes place. As a result of this interaction a surface sulfato complex of iron is formed. The complex is involved in the sites responsible for activity for acid catalytic esterification. Above 573 K, the sulfato complex will gradually decompose with a further increase in temperature. A new structure scheme of the sulfato complex is proposed. |
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| Keywords: | Ammonium sulfate iron oxide solid acid ESR Mö ssbauer spectroscopy IR |
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