用新型合成席夫碱衍生物从钨锰矿中回收六价钨。
Recovery of W(VI) from Wolframite Ore Using New Synthetic Schiff Base Derivative.
机构信息
Department of Chemistry, Faculty of Pharmacy, Heliopolis University, El Salam City, Cairo 11785, Egypt.
Department of Chemistry, Faculty of Science, Zagazig University, Zagazig 44519, Egypt.
出版信息
Int J Mol Sci. 2023 Apr 18;24(8):7423. doi: 10.3390/ijms24087423.
A new synthetic material, namely, (3-(((4-((5-(((S)-hydroxyhydrophosphoryl)oxy)-2-nitrobenzylidene) amino) phenyl) imino) methyl)-4-nitrophenyl hydrogen (R)-phosphonate)), was subjected to a quaternary ammonium salt and named (HNAP/QA). Several characterizations, such as FTIR spectrometry, H-NMR analysis, C-NMR analysis, P-NMR Analysis, TGA analysis, and GC-MS analysis, were performed to ensure its felicitous preparation. HNAP/QA is capable of the selective adsorption of W(VI) ions from its solutions and from its rock leachate. The optimum factors controlling the adsorption of W(VI) ions on the new adsorbent were studied in detail. Furthermore, kinetics and thermodynamics were studied. The adsorption reaction fits the Langmuir model. The sorption process of the W(VI) ions is spontaneous due to the negative value of ∆° calculated for all temperatures, while the positive value of ∆° proves that the adsorption of the W(VI) ions adsorption on HNAP/QA is endothermic. The positive value of ∆° suggests that the adsorption occurs randomly. Ultimately, the recovery of W(IV) from wolframite ore was conducted successfully.
一种新型合成材料,即(3-(((4-((5-(((S)-羟基膦酰基)氧基)-2-硝基苄叉基)氨基)苯基)亚氨基)甲基)-4-硝基苯基(R)-膦酸氢盐),被制成季铵盐,并命名为(HNAP/QA)。通过傅里叶变换红外光谱(FTIR)、核磁共振氢谱(H-NMR)分析、核磁共振碳谱(C-NMR)分析、核磁共振磷谱(P-NMR)分析、热重分析(TGA)和气相色谱-质谱联用分析(GC-MS)等多种手段对其进行了结构鉴定,以确保其成功制备。HNAP/QA 能够从溶液及其岩石浸出液中选择性吸附 W(VI)离子。详细研究了控制新吸附剂吸附 W(VI)离子的最佳因素。此外,还研究了动力学和热力学。吸附反应符合朗缪尔模型。由于所有温度下计算的∆°值均为负值,因此吸附过程是自发的,而∆°值为正值则表明 W(VI)离子在 HNAP/QA 上的吸附是吸热的。∆°值为正值表明吸附是随机发生的。最终,成功地从黑钨矿矿石中回收了 W(IV)。
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