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铜离子催化DPKA关环反应及其潜在应用(CuⅡ-induced Ring-formation Reaction of Di-pyridylketone Azine and Its Potential Application)
二吡啶酮肼合物 离子识别 荧光 铜离子
2010/8/18
铜离子催化的氧化关环有机反应,用于选择性荧光探测金属铜离子的存在。晶体结构和光谱分析表明,在DPKA的乙腈/水混合溶剂中,引入铜离子可以促使苯并三氮唑类荧光化合物(2)的形成,该反应可以使得溶液的荧光明显增强。而且在滴定溶液里,引入Cu2+螯合剂EDTA,并不能使得溶液的荧光减弱,表明荧光是由有机物2发射的。同时,其他金属离子的引入并不能产生荧光,而且干扰离子的存在也不能使得荧光光谱发生显著改变,...
六次甲基四胺与氯化钴室温固相反应机制的研究(Mechanism of Room-temperature Solid State Reaction of Hexamethylene Tetramine with Cobaltous Chloride)
室温固相反应 冷熔融机理 紫外-可见漫反射 反应动力学
2010/8/18
The cold-melting mechanism and the cold-dissolving-melting mechanism were further studied by TG/DSC and in situ micro-photographs techniques with the mixture of hexamethylene tetramine and CoCl2·6H2O ...
高分散度Pt-Ir疏水催化剂制备及氢-水液相交换催化性能研究(Highly Dispersed Pt-Ir Hydrophobic Catalysts: Preparation and Catalytic Activity for Hydrogen-water Liquid Exchange Reaction)
疏水催化剂 氢-水液相催化交换 氢同位素分离 微波加热法 Pt-Ir/C
2010/8/18
用乙二醇作为碳黑分散溶剂,微波辐射快速加热,1~2 MPa压力下制备了Pt/C及不同Pt、Ir比例的Pt-Ir/C催化剂,用浸渍还原法制备了Pt-Ir/C催化剂,并用XRD,TEM和XPS对催化剂进行了表征。将两种方法制备的Pt/C,Pt-Ir/C催化剂与聚四氟乙烯(PTFE)一起负载于多孔金属载体,得到疏水催化剂,考查了其对氢-水液相交换反应的催化活性。微波辐射加热法制备的Pt/C和Pt-Ir...
溶液中Fe(VI)向Fe(IV)转化反应的分光光度法跟踪(Conversion Reaction of Fe(VI) to Fe(IV) in Solution Traced by Visible Spectrometry)
高铁(VI)酸盐 高铁(IV)酸盐 转化反应 分光光度法
2010/8/18
Different concentrations of ferrate(VI) with ClO- and without ClO- in alkaline solution were traced by visible spectrometry, and the conversion reaction of Fe(VI) to Fe(IV) was found to exist, in cond...
Reaction of Tribromonitromethane with Aldehydes and Ketones in the Presence of Zn Metal in Aqueous Medium
Reaction of Tribromonitromethane Aldehydes Ketones the Presence Zn Metal Aqueous Medium
2010/6/28
Aldehydes and ketones react with tribromonitromethane in the presence of zinc metal dust, ammonium chloride and water to give dibromonitroalcohols in good yields.