Ersan Ali Can, Yildirim Meral, Kipcak Azmi Seyhun, Tugrul Nurcan
Acta Chim Slov. 2016 Dec;63(4):881-890. doi: 10.17344/acsi.2016.2842.
In this study, zinc borate hydrate (Zn3B6O12 · 3.5H2O) was synthesized from zinc oxide (ZnO) and boric acid (H3BO3) via a novel method of ultrasonic irradiation. X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR) and Raman spectroscopy were used to characterize the synthesized products. Scanning electron microscopy (SEM) was used to determine the effects of reaction time and reaction temperature on the morphology of the products. Thermal dehydration kinetics were studied using thermal gravimetry and differential thermal gravimetry analysis (TG/DTA). The Doyle and Kissinger non-isothermal kinetic methods were used to analyse the TG/DTA data. The XRD results confirmed the successful synthesis of Zn3B6O12 · 3.5H2O at a range of reaction temperatures and times. Additionally, FT-IR and Raman analysis of the products identified peaks specific to zinc borate. Using the methods of Doyle and Kissinger, the activation energies of thermal dehydration of zinc borate were found to be 341.61 kJ/mol and 390.17 kJ/mol, respectively.
在本研究中，通过一种新型的超声辐照方法，由氧化锌（ZnO）和硼酸（H₃BO₃）合成了水合硼酸锌（Zn₃B₆O₁₂·3.5H₂O）。采用X射线衍射（XRD）、傅里叶变换红外光谱（FT-IR）和拉曼光谱对合成产物进行表征。利用扫描电子显微镜（SEM）确定反应时间和反应温度对产物形貌的影响。采用热重分析和差示热重分析（TG/DTA）研究热脱水动力学。使用Doyle和Kissinger非等温动力学方法分析TG/DTA数据。XRD结果证实了在一系列反应温度和时间下成功合成了Zn₃B₆O₁₂·3.5H₂O。此外，对产物的FT-IR和拉曼分析确定了硼酸锌特有的峰。使用Doyle和Kissinger方法，发现硼酸锌热脱水的活化能分别为341.61 kJ/mol和390.17 kJ/mol。
