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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 Cu 30 Cr 5 /alumina B exhibited better catalytic performance than Cu 30 Cr 5 /γ-Al 2 O 3 . 99.0% conversion of TAA and 97.2% selectivity...
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