改性Pd/C催化对叔丁基α-甲基肉桂醛加氢制备铃兰醛

Selective hydrogenation of p-tert-butyl-α-methyl cinnamaldehyde to lilial over modified Pd/C

摘要:

采用5wt.%Pd/C催化对叔丁基α-甲基肉桂醛（PTBMC）选择加氢制备铃兰醛，结果表明K2CO3改性催化剂能加快反应速率，且铃兰醛的选择性显著提高。以K2CO3改性5wt.%Pd/C为催化剂，甲醇为溶剂，底物初始浓度0.375mol/L，在40℃，0.5MPa的优化反应条件下反应80min，PTBMC的转化率为100%，铃兰醛的选择性达到98.5%。

Abstract:

In this paper, the selective catalytic hydrogenation of p-tert-butyl-α-methyl cinnamaldehyde (PTBMC) to lilial over 5wt.%Pd/C was investigated. Results showed that K2CO3 modification of the catalyst remarkably improved the reaction rate and the selectivity of lilial. The effect of solvent, temperature, pressure and the initial concentration on the reaction was studied. The conversion of PTBMC is 100% and the selectivity of lilial was up to 98.5% under optimal reaction conditions: c (PTBMC) =0.375mol/L, 40 ℃, 0.5MPa.