化学势专题研讨

提出有关化学势在概念、状态函数阵中定位、极限定理和数值计算，以及在应用方面的新的理论构思。同时发现现行教材中的一些问题，加以探讨。     

改性聚丙烯酰胺螯合树脂的合成及对污水中金属离子吸附性

以丙烯酰胺为单体,双丙烯酰胺为交联剂,先制得交联聚丙烯酰胺聚合物,再用氨基硫脲对交联聚丙烯酰胺进行功能化改性,反应制得以聚丙烯酰胺为主链,侧链带螯合基团的改性氨基硫脲树脂.采用元素分析,红外光谱对树脂进行了表征,并用动态吸附法测定了该树脂对几种金属离子的吸附性能,发现该树脂对银离子有较好的吸附性能.     

An EQCM study of the electrochemical behaviors of polycrystalline gold electrode in sulfuric acid solution

The electrochemical quartz crystal microbalance (EQCM) was applied to study the electrochemical behaviors of polycrystalline Au in sulfuric acid solution. The large mass change observed in the doublelayer region was attributed to the partly discharged adsorption of sulfate anions with the co-adsorption of H₂O. According to the observed EQCM frequency response, the formation mechanism of surface oxide was reasonably postulated, in which the roles of the adsorbed anions and the co-adsorbed H₂O were particularly emphasized. Supported by the National Natural Science Foundation of China Chen Shengli: born in 1968, Ph. D.     

肾上腺素电化学氧化反应特性的研究

探讨了肾上腺素在ｐＨ３～７恒离子强度溶液中、玻璃碳电极上的吸附现象，解析了表面超额Γ等一系列电极过程的动力学参数．结果表明：（１）肾上腺素在玻璃碳电极上存在“弱”吸附现象，并且在ｐＨ≥３的ＭｃＩｌｖａｉｎｅ缓冲溶液中，肾上腺素的吸附量是比较大的；（２）溶液介质ｐＨ值的变化对于肾上腺素电化学氧化过程的动力学特征影响较大     

[HPdCl4]-在Dowex-MSA-1大孔阴离子交换树脂相内的传质研究

用浅床法研究了 Dowex- MSA- 1大孔阴离子交换树脂对 [HPd Cl4] -的吸附、解吸行为以及诸动力学参数如扩散常数 B ,内扩散系数 D ,半交换期 t1 / 2 ,滞留时间τd 和死时间τd′的变化规律     

Deep levels,transport and THz emission properties of SiGe/Si quantum-well structures

In coal mines in such countries as China and Russia,most of the coal mine methane(CMM) generated during mining is emitted to the atmosphere without any effective usage,because the methane concentration of CMM is relatively low and not allowed to be used as fuel for safety reasons.Methane is one of the greenhouse gases.Therefore,if it becomes possible to concentrate CMM to an acceptable level for use as fuel,this will greatly contribute to reduction of greenhouse gas emissions.With the aim of gaining approva...     

温度对煤吸附瓦斯特性影响的实验研究

为了研究温度对煤吸附瓦斯特性的影响对于深部高温瓦斯矿井进行通风设计及煤层气资源评价的指导意义,利用瓦斯吸附装置,对不同煤样进行不同温度下吸附等温线及吸附常数的测定。实验表明：吸附常数b与温度T较好的符合负指数关系;而随着温度的升高,吸附常数a值变化不大,可以认为是某一恒定值。     

蜜胺树脂在硝酸介质中对钯的吸附行为

研究了在硝酸介质中密胺树脂对钯的吸附行为和吸附的影响因素。结果表明，在１ｍｏｌ．ｄｍ＾－＾３硝酸溶液中，存在一定量的氯离子（Ｃｌ＾－）的情况下，密胺树脂对钯Ｐａ（ＩＩ）的吸附率可达８０％以上，同时对密胺树脂和载有Ｐｄ（ＩＩ）的树脂作了红外光谱测定。