作者:Jin-Hai Cui、Shu-Fen Zhang、Lei Zhang、Zhi-Gang Yin
DOI:10.14233/ajchem.2014.18228
日期:——
With the addition of 15-20 % more of water in absolute methanol dissolvent, the hydrogenation reduction on four of nitro-derivatives of 5,10-dihydro-phenophosphazine system was improved from 75 to 95 %, yet with reduced time and more efficiency. Both the adsorption and desorption of nitro-derivative on the surface of Pd/C and the concentrate of methanol aqueous solution were proved to be the dominating factors for the reaction rate of hydrogenation reduction, the optimistic concentrate of methanol aqueous solution were fitted by nonlinear Gaussian function and be verified by experiments also.
在甲醇绝对溶剂中加入15-20%的水,5,10-二氢-苯磷嗪系统的四个硝基衍生物的加氢还原率从75%提高到95%,同时缩短了时间,提高了效率。实验证明,硝基衍生物在Pd/C表面上的吸附和解吸以及甲醇水溶液的浓度是加氢还原反应速率的主要决定因素,浓度合适的甲醇水溶液可用非线性高斯函数拟合,并通过实验验证。