Single-stream batch precipitation of aluminum hydroxide from solutions of basic aluminum sulfate and sodium aluminate with low caustic modulus

1978 ◽  
Vol 14 (10) ◽  
pp. 759-762
Author(s):  
I. P. Basmanov ◽  
N. P. Poezd ◽  
E. D. Radchenko ◽  
D. F. Poezd

2012 ◽  
Vol 1372 ◽  
Author(s):  
César A. C. Soto ◽  
Aurora P. Delgado ◽  
Esthela R. Ramírez ◽  
Veridiana R. Zamudio

ABSTRACTAluminum lithium hydroxide carbonate hydrate, also known as Al-Li double hydroxide or Al-Li hydrotalcite-like compound [Al2Li(OH)6]2CO3•nH2O, was prepared from basic aluminum sulfate. This compound was prepared by precipitation in homogeneous solution of an aluminum bisulfite solution. A sodium aluminate aqueous solution was prepared by dissolving basic aluminum sulfate in 1M sodium hydroxide. The Al-Li double hydroxide was obtained after addition of lithium carbonate satured solution to the sodium aluminate solution, at 60 °C. The synthesized powder was characterized by thermal analysis (TG, DTG and DTA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). By this method crystalline Li-Al hydrotalcite like compound with composition near to Al4Li2(OH)12CO3 •3H2O was obtained.





2013 ◽  
Vol 750-752 ◽  
pp. 1754-1757
Author(s):  
Cheng Qian ◽  
Xing Yong Liu ◽  
Shi Xiong Hao ◽  
Ting Ting Tang ◽  
Ya Jing Lan ◽  
...  

The super-fine aluminum hydroxide was prepared by crystal seed precipitation from sodium aluminate solutions in this study. The influence of NaOH concentration, [NaO/[Al (OH)3] molar ratio, precipitation temperature, and precipitation time on the particle size of super-fine aluminum hydroxide was investigated. The results show that the optimum conditions were: NaOH concentration be 180 g/L, [NaO/[Al (OH)3] molar ratio be 1.15, precipitation temperature be 40°C, and precipitation time be 26 h.



ChemInform ◽  
1990 ◽  
Vol 21 (19) ◽  
Author(s):  
J. HILLE ◽  
W. WEINHOLD ◽  
U. BOLLMANN ◽  
K. BECKER ◽  
H. BREMER ◽  
...  


2011 ◽  
Vol 37 (8) ◽  
pp. 3627-3630 ◽  
Author(s):  
Jaime Jiménez-Becerril ◽  
Irma García-Sosa ◽  
Ignacio A. Rivero


1972 ◽  
Vol 52 (2) ◽  
pp. 209-218 ◽  
Author(s):  
H. KODAMA ◽  
S. SHAH SINGH

The nature of the complex that had been formed by precipitating aluminum hydroxide between interlayer spaces of montmorillonite in the presence of anions Cl and SO4 was examined by chemical, X-ray, thermal, and infrared absorption methods. Results indicated that the complex was a hydroxy aluminum sulfate–montmorillonite with the structural formula: Al0.02(H2O)3[Al(OH)2.53(SO4)0.18] + silicate layer of montmorillonite [O10(OH)2 basis]. The atomic ratio, Al:OH:SO4, of the interlayer material was 1:2.53:0.18, which was similar to the ratio 1:2.5:0.25 of "basaluminite." X-ray data showed that the complex had spacings of 19.7, 21.9, and 24.4 A, under an extremely dry condition, moist condition, and on solvation with glycerol, respectively. During the heat treatments between 100 and 200 C, the d001 spacing was sharply reduced to 16 A and the newly developed phase persisted over a wide range of temperature from 200 to 600 C. This phase was considered as an interstratified structure consisting of a 14.3-A unit (chloritelike structure) and a 17.7-A unit (dehydrated basaluminite + silicate layer of montmorillonite). Although the d001 spacing observed for the unheated material was larger than that expected for the amount of aluminum precipitated in the montmorillonite, it was interpreted in terms of voluminous Al13O40 polyhedra that were described previously as basic structural units of a basic aluminum sulfate.



1977 ◽  
Vol 13 (2) ◽  
pp. 117-118
Author(s):  
N. P. Poezd ◽  
E. D. Radchenko ◽  
V. M. Kornus ◽  
D. F. Poezd ◽  
I. P. Titov ◽  
...  


RSC Advances ◽  
2017 ◽  
Vol 7 (62) ◽  
pp. 39341-39348 ◽  
Author(s):  
Min Chen ◽  
Xianhe Deng ◽  
Feiqiang He

Through a stirred bubbling apparatus, the kinetics of S(iv) oxidation in basic aluminum sulfate (BAS) rich solution were investigated by varying the components of the BAS solution, concentration of S(iv), temperature, air flow and oxygen partial pressure.





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