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(III) complexes of 2-thienyltrifluoroacetonate, terephthalic acid and phenanthroline as light conversion agents ZHAO Xue-hui(赵学辉)1,2, HUANG Ke-long(黄可龙)1, JIAO Fei-peng(焦飞鹏)1, YANG You-ping(杨幼平)1...), terephthalic acid (TPA) and phenanthroline (Phen) were synthesized. The new complexes Eu(TPA)(TTA)Phen and Eu2(TPA)(TTA)4Phen2 were characterized by elemental analysis, IR spectrum, scanning electron......
Syntheses and cofluorescence of complexes of Eu(Ⅲ)/Y(Ⅲ) with terephthalic acid, 2-thenoyltrifluoroacetone and trioctylphosphine oxide ZHAO Xue-hui(赵学辉)1, 2, HUANG Ke-long(黄可龙)1, LIU Su-qin(刘素琴)1...(Ⅲ) complexes of terephthalic acid(TPA) with 2-thenoyltrifluoroacetone(HTTA) and trioctylphosphine oxide(TPPO) were synthesized. Compositions of these complexes are revealed to be Eu2(1-x)Y2x(TPA)(TTA)4- (TPPO......
Spectrofluorimetric determination of terbium with terephthalic acidZHAO Guohu and ZHAO JunBasic Science Department, Gansu Agricultural University, Lanzhou 730070, China摘 要:<正>A spectrofluorimetric method has been developed for the determination of terbium(III) based on the formation ofa complex with terephthalic acid [benzene-1,4-dicarboxylic acid......
铕Ⅲ-对苯二甲酸-2-噻酚甲酰三氟丙酮多核体系的荧光增强及其应用赵学辉1,1,黄可龙1,焦飞鹏1,刘志国1,罗婕1(1.湖南省株洲市湖南工业大学化学化工学院)摘 要:以对苯二甲酸(TPA)与2-噻酚甲酰三氟丙酮(HTTA)为配体研究了Eu3+在其乙醇溶液中的荧光增强效果.研究结果表明,在pH为6.8的乙醇溶液中,对苯二甲酸与2-噻酚甲酰三氟丙酮混合配体的敏化可使Eu3+荧光强度提高三个多数量级.在三苯基氧化膦(TP-PO)存在的条件下,稀土La3+,Gd3+,Y3+与Eu3+-TPA-TTA-TPPO形成的多核......
hydrolysis method was explored for the preparation of terephthalic acid (TPA) from waste polyethylene terephthalate (PET). First, a series of single factor experiments on the depolymerization rate of waste... terephthalate; terephthalic acid; alcohol alkali hydrolysis; ethylene glycol Cite this article as: SUN Cong-hao, CHEN Xiang-ping, ZHUO Qiang, ZHOU Tao. Recycling and depolymerization of waste polyethylene......
by direct quantitative method. The terephthalic acid-fluorescence spectrophotometry analysis was used to track the effect of the different grain sizes, mass concentration, powder-liquid reaction times... spectroscopy; terephthalic acid 羟自由基(·OH)是一种非常活跃,进攻性极强的活性氧自由基,其对生物体危害极大,近年来成为科学工作者的研究热点[1].许多矿物表面都能通过一定途径产生羟自由基[2],在超细加工过程中,石英通过异裂和均裂,表面出现大量裸露的基团,自由基(·SiO,·Si和·SiO2等)较丰富[3].新破碎石英表面自由基决定尘粒表面活性,对人体粉尘性疾病的......
Inhibition mechanism of aspartic acid on crystal growth of hydroxyapatite HUANG Su-ping(黄苏萍), ZHOU Ke-chao(周科朝), LI Zhi-you(李志友) State Key Laboratory of Powder Metallurgy, Central South...; Abstract: The effects of aspartic acid on the crystal growth, morphology of hydroxyapatite(HAP) crystal were investigated, and the inhibition......
Pressure acid leaching of zinc sulfide concentrate GU Yan(古 岩), ZHANG Ting-an(张廷安), LIU Yan(刘 燕), MU Wang-zhong(牟望重), ZHANG Wei-guang(张伟光),DOU Zhi-he(豆志河), JIANG Xiao-li(蒋孝丽) Key... temperature, solid-to-liquid ratio and additive amount on pressure acid leaching process of the zinc sulfide concentrate were studied. The results indicate that the additive can improve the reaction......
Synergistic extraction of cerium from sulfuric acid medium using mixture of 2-ethylhexyl phosphonic acid mono 2-ethylhexyl ester and Di-(2-ethyl hexyl)phosphoric acid as extractant LIU Ying1,HUANG... 100088, China) Abstract:Synergistic extraction of cerium(IV) from sulfuric acid medium using mixture of 2-ethylhexyl phosphonic acid mono 2-ethylhexyl ester(HEH/EHP, HL) and Di-(2-ethyl hexyl......
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