往复式压缩机振动管道支架布置方法

往复式压缩机管道振动是由于气流脉动引起的。当激振频率接近管道固有频率时 ,管道系统产生共振 ,为有效避免共振的发生 ,本文介绍了往复式压缩机振动管道支架的具体布置方法 ,合理设置支架 ,提高管道的机械振动频率 ,避免共振。该方法使用简捷、针对性强 ,能有效地减缓管道振动 ,达到抗振、降噪的目的 ,延长设备的使用寿命。     

转化炉采用多种原料制气工艺

介绍转化炉的一般制气过程 ,阐述可利用一转化炉 ,在多种原料途径下的制气工艺。     

铕-芳香羧酸-丙烯酰胺三元配合物的合成及发光性能研究

以对甲基苯甲酸、大茴香酸、间氯苯甲酸、对羟基苯甲酸、苯甲酸为第一配体,丙烯酰胺为活性配体,合成了5种新的铕芳香羧酸丙烯酰胺三元配合物.通过元素分析,EDTA配位滴定分析,红外、紫外、荧光光谱分析和热分析对目标配合物的组成、结构进行了表征,并研究了它们的发光性能和热性能.结果表明,5种新的活性铕三元荧光配合物均具有良好的发光性能,各芳香羧酸向铕离子传递光能的能力为:苯甲酸＞对甲基苯甲酸＞大茴香酸＞间氯苯甲酸＞对羟基苯甲酸,若能将这些含活性配体丙烯酰胺的铕三元荧光配合物引入高分子化合物中可望合成出键合型铕高分子发光材料.     

Synthesis and luminescent properties of ternary complexes of terbium with thenoyltrifluoroacetone and reactive ligand

Three new reactive ternary terbium complexes were synthesized with the first ligand of thenoyltrifluoroacetone and the reactive secondary ligand such as maleic anhydride, undecenoic acid, oleic acid, and characterized by means of elemental analysis, ethylenediamine tetraacetic acid titrimetric method, Fourier transform infrared and ultraviolet spectroscopies. And the luminescent properties of the ternary terbium complexes were investigated.The results show that the ternary terbium complexes possess much higher luminescent intensity than the binary complex of terbium with thenoyltrifluoroacetone, and the synergy ability sequence of the three reactive ligands is as follows: undecenoic acid＞oleic acid＞maleic anhydride. Because the ternary terbium complexes contain reactive ligands that can be copolymerized with other monomers, a new way for the synthesis of the bonding-type rare earth polymer functional materials with excellent luminescent properties is provided.