本文關(guān)鍵詞： 高純一水軟鋁石 花狀 水熱法　出處：《無機(jī)鹽工業(yè)》2017年03期 　論文類型：期刊論文

【摘要】：以氫氧化鋁、硫酸和尿素為基本原料,首先使用硫酸溶解氫氧化鋁,經(jīng)特殊除雜工藝制備出高純硫酸鋁,而后以尿素為沉淀劑水熱合成一水軟鋁石。采用X射線衍射儀(XRD)、X射線熒光光譜儀(XRF)、等離子體發(fā)射光譜儀(ICP)、掃描電鏡(SEM)等對水熱產(chǎn)物進(jìn)行成分、純度、相態(tài)和形貌分析。結(jié)果表明,在低溫狀態(tài)下水熱產(chǎn)物為球形結(jié)構(gòu)的硫鋁無定形膠體,可用化學(xué)表達(dá)式表示為Al_2O_3·0.6SO_3·2.2H_2O;在150℃反應(yīng)5 h,可以獲得純度為99.999%的花狀一水軟鋁石。另外,還探討了花狀一水軟鋁石的形成機(jī)理。
[Abstract]:Using aluminum hydroxide, sulfuric acid and urea as basic raw materials, high purity aluminum sulfate was prepared by using sulfuric acid to dissolve aluminum hydroxide. The hydrothermal products were synthesized by hydrothermal method using urea as precipitating agent. The composition and purity of hydrothermal products were determined by X-ray diffractometer, plasma emission spectrometer and scanning electron microscope (SEM). The results of phase state and morphology analysis show that at low temperature the hot product of water is a spherical amorphous colloid, which can be expressed as Al_2O_3 路0.6SO3.2.2H _ 2O, and a flower-like boehmite with purity of 99.999% can be obtained after 5 h reaction at 150 鈩，

本文編號：1517599