乙醇-盐-水-5-Br-PADAP体系萃取分离测定钯

研究了在硫酸铵存在下 ,5 Br PADAP乙醇体系中Pd(Ⅱ )、Rh(Ⅲ )、Pt(Ⅳ )的萃取行为及乙醇溶液的分相条件 ,讨论了影响萃取率的各种因素 ,试验表明 ,室温下 ,一定 pH范围内 ,该体系中的Pd(Ⅱ )几乎可完全被乙醇相萃取 ,而Rh(Ⅲ )、Pt(Ⅳ )不被萃取或萃取率很低 ,从而可实现Pd(Ⅱ )、Rh(Ⅲ )、Pt(Ⅳ )混合离子的定量分离 ,同时建立了Pd(Ⅱ )的测定方法。乙醇相中Pd(Ⅱ ) 5 Br PADAP配合物表观摩尔吸光系数为 1.18× 10 5L·mol- 1·cm- 1,钯量在 0～ 9.6 0 μg/10ml范围内符合比耳定律 ,检出限为 0 .0 90 μg/10ml。用该法分离混合样和测定两种活性碳钯催化剂中钯 ,结果满意     

来曲唑的合成、表征及晶体研究

合成了抗癌药物4,4′-(1H-1,2,4-三唑-1-亚甲基)-双-甲苯基氰,测定了其IR, NMR和单晶结构,晶体C17H11N5属单斜晶系,空间群P21/n,晶胞参数:a=0.70300(14) nm, b=1.6170(3) nm, c=1.3360(3) nm, β=104.80(3)°, Z=4.结构解析最终一致性因子R1=0.0897.分子间通过氢键和范德华力形成超分子结构.     

β-环糊精键合滤纸的制备及在室温磷光分析中的应用

研究了β-环糊精修饰滤纸的制备方法及最佳制备条件，考察了修饰滤纸对16种有机物的室温磷光的增强效果，结果表明芴，苊，咔唑以及7，8-苯并喹啉的室温磷光信号有较大增强，与未修饰滤纸基质相比，4种化合物在修饰滤纸基质上的室温磷光检测灵敏度有了很大的改进。建立的方法用于水样中的咔唑和7，8-苯并喹啉的测定。     

Solid state reactions of nitrogenous heterocyclic compounds(Ⅰ)——Solid state reactions of 3-methyl-l-phenyl-5-pyrazolone with carbonyl compounds

The solid state reaction of 3-methyl-1-phenyl-5-pyrazolone (MPP) with aromatic aldehydes and ke-tones benzil derivatives and imides,and the solid state Michael addition reaction of MPP with 4-arylidene-3-methyl-1-phenyl-5-pyrnzolone 2 were investigated.Some new solid state reactions between the reactants were found,from which a series of new compounds were obtained The structures of the products were identified by IR,1H NMR,MS,elemental analyses and also by X-ray crystal analysis,and the reaction mechanism of MPP with aromatic aldehydes and ketones was proposed     

钙钛矿型CO氧化催化剂耐SO2中毒性质的研究

钙钛矿型ＣＯ氧化催化剂耐ＳＯ２中毒性质的研究马春曦王宝辉（大庆石油学院石油化工系安达１５１４００）关键词钙钛矿型催化剂一氧化碳氧化硫中毒近年来，人们对钙钛矿型复合物ＣＯ氧化催化剂作了大量研究，证明其具有很高的ＣＯ氧化活性［１－３］，并开始尝试应用于汽...     

溶胶-凝胶法制备铁酸盐超微粒子催化剂

采用溶胶－凝胶法制备了含Zn,Ni,Co的铁酸盐超微粒子催化剂，运用DTA－TG、IR、XRD以及BET比表面测试等手段对所制备的样品进行了表征。同时，考察了铁酸盐对二氧化碳选择性氧化乙苯制苯乙烯的催化性能。结果表明：制备的铁酸盐均为尖晶石型晶体，粒子的比表面积为31．9－36．3m^2/g，晶粒大小约为30－35nm，在由二氧化碳选择性氧化乙苯制苯乙烯的反应中表现出较好的催化活性。     

甲醇在超临界环已烷中形成簇团的Monte Carlo初探

用Ｍｏｎｔｅ Ｃａｒｌｏ方法研究了甲醇－环己烷体系的微观结构随压力（密度）的变化情况，结果表明，在临界区域甲醇分子的聚集最为明显，形成的甲醇团簇尺寸最大，溶剂分子在甲醇周围的局部密度则在低于临界区或亚临界区较大。     

Nonequilibrium solid phase formation studied by lattice dynamics calculation and ion beam mixing in an immiscible Co-Ag system

For the equilibrium immiscible Co-Ag system, a proven realistic ab initio derived n-body potential is applied to study the nonequilibrium solid phase formation at three chemical stoichiometries of Co/Ag = 1:3, 1:1, and 3:1. To predict the structural stability, the elastic constants and the phonon spectra are calculated at the chosen stoichiometries with a total of eight hypothetical crystalline structures. The calculated results suggest that four compounds, that is, D0(3) CoAg3, B1 CoAg, B2 CoAg, and D0(3) Co3Ag, are unstable, as they all feature negative elastic constants as well as imaginary phonons, and that another four compounds of both fcc-type L1(2) and hcp-type D0(19) structures at chemical stoichiometries of Co/Ag = 1:3 and 3:1, respectively, may elastically be favored and therefore obtainable under some specific conditions. It is also found that all the calculated elastic constants and phonon spectra are coincident within the framework of the elastic theory. Moreover, the calculated elastic constants are in good agreement with those acquired directly from ab initio calculations, lending support to the validity of the ab initio derived n-body Co-Ag potential as well as its resultant elastic constants and the phonon spectra. Interestingly, some of the predicted nonequilibrium solid phases, that is, two hcp-type compounds at chemical stoichiometries of Co/Ag = 1:3 and 3:1, respectively, are indeed obtained in ion beam mixing experiments and their lattice constants determined by diffraction analysis are in good agreement with those from calculations.