本文選題：硫酸鋁　切入點：水解　出處：《環(huán)境工程學(xué)報》2017年05期 　論文類型：期刊論文

【摘要】：采用X射線衍射(XRD)、傅里葉變換紅外光譜(FT-IR)、熱重分析(TGA)和掃描電子顯微鏡(SEM)綜合分析水熱溫度對硫酸鋁水解產(chǎn)物物相的影響及其反應(yīng)機理,同時通過低溫氮氣吸附法(BET)測定產(chǎn)物孔結(jié)構(gòu)。結(jié)果表明:水熱溫度t≤96℃時,Al_2(SO_4)_3水解產(chǎn)物為無規(guī)則團聚的非晶態(tài)氫氧化鋁;t≥120℃,氫氧化鋁不穩(wěn)定,存在再溶解-再沉淀過程,非晶態(tài)氫氧化鋁向NaAl_3(SO_4)_2(OH)_6轉(zhuǎn)化;t=180℃時,通過奧氏熟化,Al_2(SO_4)_3水解產(chǎn)物轉(zhuǎn)變?yōu)樾狈搅骟wNaAl_3(SO_4)_2(OH)_6,擇優(yōu)向(113)面生長。BET結(jié)果表明,水熱溫度t≤96℃時,產(chǎn)物孔徑分布不均勻,t≥120℃時,產(chǎn)物孔徑分布窄而均勻,且t=120℃時,產(chǎn)物比表面積最大為91.99 m~2·g~(-1)。
[Abstract]:The effect of hydrothermal temperature on the phase of hydrolysate of aluminum sulfate and its reaction mechanism were analyzed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and scanning electron microscope (SEM). At the same time, the pore structure of the product was determined by low temperature nitrogen adsorption method. The results showed that when the hydrothermal temperature was t 鈮，

本文編號：1637996