液相催化加氢制备2-氨基苯甲醇

以2-硝基苯甲醇为原料,乙酸乙酯为溶剂,负载型Ni为催化剂,采用液相催化加氢制备了2-氨基苯甲醇,考察了溶剂种类、温度、压力和催化剂用量对反应的影响。结果表明,该反应的最优化的工艺条件是:以乙酸乙酯为溶剂,反应温度50～60℃,反应压力1.5MPa,m(催化剂)/m(2-硝基苯甲醇)=1∶10。在此条件下,产品收率可达到93.2%。

Synthesis and Crystal Structure of Dinuclear Copper Complex [Cu(CH_2O(C_6H_4)N=C(C_6H_4)O)(Py)]_2

The complex [Cu2L2(Py)2] (H2L=2-aminobenzoic alcohol condensation salicylaldehyde) was obtained. A single-crystal X-ray study shows that the complex is a binuclear compound (Cu2C38H32N4O4). The coordination geometry about each copper atom is best described as a distorted square pyramid. The compound [Cu2L2(Py)2] belongs to monoclinic system with space group P21, lattice constants: a = 10.3881(1), b = 17.9724(1), c = 17.5800(2) ? b =90.4880(1), V= 3282.05(5) 3, Z= 4, Mr =735.75, Dc=1.489 g/cm3, m= 1.344mm-1, F(000) = 1512, R=0.0519, wR=0.1092 for 6725 reflections with I >2s(I). The distances between Cu(II) and O atoms are range from 1.898(6) to1.976(5)? between Cu(II) and N atoms are range from 1.990(6) to 2.369(7)? The Cu(1)Cu(2) bond length is 3.024(4) ?

填料塔中醇胺水溶液回收低浓度CO2的研究

CO2作为一种温室气体，对人类生存环境有着重要的负面影响，但同时也是一种重要的资源和工业气体，可以在许多方面造福于人类，目前已广泛应用于食品、化工、医药、石油开采等部门，所以如何更好地回收并利用CO2成为各国研究的热点。醇胺水溶液吸收CO2工艺出现于20世纪30年代，是工业净化CO2的主要方法之一。