Hydrogenation of 2,2,6,6-Tetramethylpiperidin-4-one over Cu₃₀Cr₅/Basic Alumina

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• 作者：Jianchao MA ; Shuai LIU ; Xiaopeng FAN ; Xiaobao DU ; Xilong YAN ; ^{yan@tju.edu.cn} ; Ligong CHEN ; ^{lgchen@tju.edu.cn}
• 关键词：2 ; 2 ; 6 ; 6-tetramethylpiperidin-4-one ; 2 ; 2 ; 6 ; 6-tetramethylpiperidin-4-ol ; basic alumina ; 2 ; 6-dimethyl-4-heptanone ; copper ; chromium ; 纬-alumina
• 刊名：Chinese Journal of Catalysis
• 出版年：2012
• 期刊代码：3_18722067
• 类别：ce
• 出版时间：April-June, 2012
• 卷：33
• 期：4-6
• 页码：605-609
• 文件大小：163 K

摘要

Alumina B (basic alumina, pH > 8) was used as the support of copper-chromium catalysts for continuous hydrogenation of 2,2,6,6-tetramethylpiperidin-4-one (TAA) to 2,2,6,6-tetramethylpiperidin-4-ol (TMP). It was found that Cu₃₀Cr₅/alumina B exhibited better catalytic performance than Cu₃₀Cr₅/纬-Al₂O₃. 99.0%conversion of TAA and 97.2%selectivity for TMP were obtained over Cu₃₀Cr₅/alumina B under optimized conditions. Cu₃₀Cr₅/纬-Al₂O₃ and Cu₃₀Cr₅/alumina B were characterized by N₂ adsorption-desorption, X-ray diffraction, X-ray photoelectron spectroscopy, and NH₃ temperature-programmed desorption. The results showed that Cu particles dispersed better in Cu₃₀Cr₅/alumina B than in Cu₃₀Cr₅/纬-Al₂O₃.