燃烧法制备Co-Dy共掺杂改性的γ-Al2O3

石油炼制与化工 ›› 2021, Vol. 52 ›› Issue (8): 78-82.

燃烧法制备Co-Dy共掺杂改性的γ-Al₂O₃

贾雅薇,范华风,田蜜,吴钳,孟竺,张静,储刚

辽宁石油化工大学石油化工学院

收稿日期:2020-12-07 修回日期:2021-04-18 出版日期:2021-08-12 发布日期:2021-07-29
通讯作者: 储刚 E-mail:chugang@126.com
基金资助:
辽宁省高端人才项目;辽宁省高等学校创新人才支持项目

PREPARATION OF Co AND Dy MODIFIED γ-Al₂O₃ BY COMBUSTION METHOD

Received:2020-12-07 Revised:2021-04-18 Online:2021-08-12 Published:2021-07-29

摘要/Abstract

摘要： 采用燃烧法，以硝酸铝、甘氨酸为原料，添加硝酸钴和硝酸镝作改性剂，制备出Co-Dy共掺杂改性的γ-Al₂O₃。利用X射线衍射、N₂吸附-脱附和扫描电镜等分析手段进行表征，考察了改性剂配比、煅烧温度、煅烧时间等工艺参数对产物晶相和形貌等的影响。结果表明：制备Co-Dy共掺杂改性γ-Al₂O₃的最佳工艺条件为：n(硝酸钴)︰n(硝酸镝)︰n(硝酸铝)=0.02︰0.01︰1，煅烧温度1 000 ℃，煅烧时间3 h；在此条件下，制备得到的γ-Al₂O₃具有较高的热稳定性。

关键词: 燃烧法, 钴, 镝, 改性γ-Al₂O₃

Abstract: Co and Dy modified γ-Al₂O₃ was successfully prepared by using aluminum nitrate and glycine as raw materials，and cobalt nitrate and dysprosium nitrate as modifiers. XRD，N₂ adsorption-desorption and SEM were used to characterize the products. The effects of the molar ratio of the modifier，calcination temperature and calcination time on the morphology of the products were investigated. The results showed that the optimum technological conditions for preparing Co and Dy modified γ-Al₂O₃ were n(cobalt nitrate)︰n(dysprosium nitrate)︰n(aluminum nitrate)= 0.02:0.01:1，a calcination temperature of 1 000 ℃，a calcination time of 3 h.

Key words: combustion method, cobalt, dysprosium, modified γ-Al₂O₃

贾雅薇范华风田蜜吴钳孟竺张静储刚. 燃烧法制备Co-Dy共掺杂改性的γ-Al₂O₃[J]. 石油炼制与化工, 2021, 52(8): 78-82.

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燃烧法制备Co-Dy共掺杂改性的γ-Al₂O₃

PREPARATION OF Co AND Dy MODIFIED γ-Al₂O₃ BY COMBUSTION METHOD

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