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

doi:10.1016/S1872-2067(11)60341-0

Abstract

Abstract: 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/γ-Al₂O₃. 99.0% conversion of TAA and 97.2% selectivity for TMP were obtained over Cu₃₀Cr₅/alumina B under optimized conditions. Cu₃₀Cr₅/γ-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/γ-Al₂O₃.

Key words: 2,2,6,6-tetramethylpiperidin-4-one, 2,2,6,6-tetramethylpiperidin-4-ol, basic alumina, 2,6-dimethyl-4-heptanone, copper, chromium, γ-alumina

MA Jian-Chao, LIU Shuai, FAN Xiao-Peng, DU Xiao-Bao, YAN Xi-Long, CHEN Li-Gong. Hydrogenation of 2,2,6,6-Tetramethylpiperidin-4-one over Cu₃₀Cr₅/Basic Alumina[J]. Chinese Journal of Catalysis, 2012, 33(4): 605-609.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(11)60341-0

https://www.cjcatal.com/EN/Y2012/V33/I4/605

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

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