N掺杂可见光化催化剂的研究

The N-doped, yellow colored titanium oxide photocatalysts were prepared with Ti(SO4)2 and NH4HCO3 as precursors by precipitation method. The photocatalytic ability under the irradiation of UV or visible light for the catalysts prepared was studied by degradation of styphnic acid. The materials were characterized by EDS, XRD, FTIR, UV-Vis DRS, and XPS. The results indicate that the photocatalytic ability of catalysts is improved, especially the ability of visible light response. The results of UV-Vis DRS show that the response wavelength range of N-dopped nitrogen is red shifted, the absorption region is expanded to 476 nm.

斯蒂酚酸铵的制备和晶体结构

目的 用单晶衍射分析方法测定斯蒂酚酸铵单晶结构； 方法 使斯蒂酚酸与２０％ 的氨水反应，生成斯蒂酚酸铵，并采用蒸发法制备单晶； 结果与结论 斯蒂酚酸铵晶体属单斜晶系，空间群为Ｐ２１／ｎ，晶体学数据为ａ＝ ０．８６１ ６（１）ｎｍ ，ｂ＝ １．７９０ １（３）ｎｍ ，ｃ＝１．４１５ ７ ｎｍ ，β＝ １０２．９５（１）°，Ｖ＝ ２．１２８ ０（５）ｎｍ ３，Ｚ＝ ８，Ｄｃ＝ １．７４３ ｍ ｇ·ｍ － ３，μ＝ １６３ ｍ － １，Ｆ（０００）＝ １ １５２；

三硝基间苯二酚逐级酸度常数的测定

通过滴定曲线分析和相应的数据处理，用电位滴定法准确地测定了２，４．６－三硝基－１，３－二羟基苯的逐级酸度常数，用同样的方法测定草酸的Ｋα１和Ｋα２，测值与文献值完全一致，证明了测定结果的可靠性。

碱式斯蒂芬酸铅生产的关键技术

介绍了碱式斯蒂芬酸铅的工艺原理及主要性能特征 ,分析了碱式斯蒂芬酸铅生产的关键技术。