合成了一种新型的三唑硫酮类表面活性剂—3-己基-4-氨基-1,2,4-三唑-5-硫酮（HATT）,通过红外光谱和核磁共振氢谱及磁谱对其结构进行了表征,研究其在黄铜矿表面的吸附动力学和热力学。结果表明：黄铜矿吸附HATT优选的p H值为4~8,吸附量...合成了一种新型的三唑硫酮类表面活性剂—3-己基-4-氨基-1,2,4-三唑-5-硫酮（HATT）,通过红外光谱和核磁共振氢谱及磁谱对其结构进行了表征,研究其在黄铜矿表面的吸附动力学和热力学。结果表明：黄铜矿吸附HATT优选的p H值为4~8,吸附量随着温度的升高而增大;吸附过程符合准二级动力学方程,吸附活化能为13.06 k J/mol;HATT在黄铜矿表面的吸附等温线符合Langmuir模型,吸附焓变ΔH为71.52 k J/mol,熵变ΔS为348.7 J/（mol·K）,吸附自由能变ΔG为-28.95 k J/mol（298K）。HATT可能以单分子层化学吸附于黄铜矿表面,吸附为自发的吸热过程。FTIR光谱分析进一步证实HATT以化学方式吸附在黄铜矿的表面。浮选试验结果也表明,HATT是黄铜矿的优良捕收剂。展开更多
Isoxazole derivatives were characterized by broad spectrum of biological activities, but the condensed heterocyclic compounds containing isoxazole were scarcely reported. In this paper, we studied the 1,3-dipolar cycl...Isoxazole derivatives were characterized by broad spectrum of biological activities, but the condensed heterocyclic compounds containing isoxazole were scarcely reported. In this paper, we studied the 1,3-dipolar cycloaddition of p-methoxybenzohydroxamoyl chloride with ethyl sodioacetoacetate to obtain a key intermediate 2. Through compound 2, fifteen novel S-triazolo-1,3,4-thiadiazines(5a-5e), imidazolo-1,3,4-thiadiazoles(9a-9e) and imidazolo-1,3,4-oxadiazoles(10a-10e) containing isoxazole, which have potentially useful biological activities, were synthesized. The structures of the products were confirmed by elemental analyses and spectral analysis. And the characteristic data of IR, 1H NMR and MS were explained reasonably.展开更多
文摘合成了一种新型的三唑硫酮类表面活性剂—3-己基-4-氨基-1,2,4-三唑-5-硫酮（HATT）,通过红外光谱和核磁共振氢谱及磁谱对其结构进行了表征,研究其在黄铜矿表面的吸附动力学和热力学。结果表明：黄铜矿吸附HATT优选的p H值为4~8,吸附量随着温度的升高而增大;吸附过程符合准二级动力学方程,吸附活化能为13.06 k J/mol;HATT在黄铜矿表面的吸附等温线符合Langmuir模型,吸附焓变ΔH为71.52 k J/mol,熵变ΔS为348.7 J/（mol·K）,吸附自由能变ΔG为-28.95 k J/mol（298K）。HATT可能以单分子层化学吸附于黄铜矿表面,吸附为自发的吸热过程。FTIR光谱分析进一步证实HATT以化学方式吸附在黄铜矿的表面。浮选试验结果也表明,HATT是黄铜矿的优良捕收剂。
文摘Isoxazole derivatives were characterized by broad spectrum of biological activities, but the condensed heterocyclic compounds containing isoxazole were scarcely reported. In this paper, we studied the 1,3-dipolar cycloaddition of p-methoxybenzohydroxamoyl chloride with ethyl sodioacetoacetate to obtain a key intermediate 2. Through compound 2, fifteen novel S-triazolo-1,3,4-thiadiazines(5a-5e), imidazolo-1,3,4-thiadiazoles(9a-9e) and imidazolo-1,3,4-oxadiazoles(10a-10e) containing isoxazole, which have potentially useful biological activities, were synthesized. The structures of the products were confirmed by elemental analyses and spectral analysis. And the characteristic data of IR, 1H NMR and MS were explained reasonably.
