由工业锌灰制备无水氯化锌

由工业锌灰制备无水氯化锌唐海峰，卞祖强（江苏宝应县实用化工研究所２２５８００）目前，工业锌灰主要用来制备硫酸锌。近来由于锌等有色金属材料价格居高不下，锌灰的价格也随着陡升，用其来制备硫酸锌经济效益已不容乐观，而用工业锌灰制备无水氯化锌却具有较高的经济...     

一种新型的除锈剂——非酸性除锈剂

<正> 目前,国内外所使用的化学除锈法一般都是酸洗法,酸洗法具有速度快、价格低廉等优点,但这种方法也有许多令人头痛的不足之处。诸如酸洗时,容易产生“氢脆”,易腐蚀金属基体本身,操作条件难以控制,操作环境差等问题。而非酸性除锈剂则不然,它既保持了酸洗法速度快的优点,又克眼了其弱点。     

工业锌灰制备无水氯化锌

治炼厂提锌后锌灰，酸溶后经双氧水氧化，二次锌置换除杂制无水氯化锌，具有较好经济效益。     

Photoluminescent and Electroluminescent Properties of Ligand Emitting y^3＋, La^3＋, Gd^3＋ and Lu^3＋ Complexes

The photolumineseent (PL) and eleetroluminescent (EL) properties of a series of ligand emitting rare earth complexes (including y^3 , La^3 , Gd^3 and Lu^3 ) were systematically studied. These complexes have the same anionic ligand, 1-phenyt-3-methyl-4-isobutyryl-5-pyrazoloneate (PMIP), and three neutral ligands, triphenyl phosphine oxide(TPPO), 2, 2‘-dipyridine (Bipy) and phenanthroline (Phen). Measured with 60 nm thin film of these complexes vaporized in vacuum on quartz substrates, a good regularity in the PL properties was observed. For rational comparison, the same structural EL devices based on these complexes, ITO/PVK (40 nm)/the complex (80 nm)/Mg: Ag (200 nm)/Ag (100 nm), were fabricated. Excluding the exeiplex emission happens, the EL luminance usually increases with the increasing of PL efficiency.     

Progresses in electroluminescence based on europium（III） complexes

The research on electroluminescence based on europium(III) complexes has come to an important phase. This article reviewed the progresses in photoluminescence and electroluminescence of Eu(III) complexes in recent years from the views of the design of Eu(III) complexes and optimization of device structures, and discussed some important factors influencing electroluminescence performance. The problems existing in the practical application such as the volatility and thermal stability of Eu(III) complexes in this area were discussed, and the possible corresponding solutions were briefly prospected.