Effects of Preparation Conditions on Alkali-Activation Reactivity of Chemosynthetic Al2O3-2SiO2 Powders

Dong Huang; Wan Li Lu; Jin Ying Pang; Guo Wei Mo; Shu Juan Yu; Guang Jian Zheng

doi:10.4028/www.scientific.net/AMR.1120-1121.123

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1120-1121Effects of Preparation Conditions on...

Effects of Preparation Conditions on Alkali-Activation Reactivity of Chemosynthetic Al₂O₃-2SiO₂ Powders

Abstract:

Pure Al₂O₃-2SiO₂ powders with alkali-activation reactivity were prepared by a sol-gel method. The effects of preparation conditions on alkali-activation reactivity were studied and the optimum preparation conditions were obtained. The results show that calcination temperature is a key factor affecting the alkali-activation reactivity of the powders, while other preparation conditions such as synthetic temperature, the molar ratio of solvents to starting materials and drying time have fewer effects on alkali-activation reactivity than calcination temperature. The structure of the powders was investigated by ²⁷Al magic-angle spinning nuclear magnetic resonance spectra. The data show that the Al₂O₃-2SiO₂ powders with the high alkali-activation reactivity are of high content of 5-coordinated Al and the peaks attributed to 5-coordinated Al are strengthened with the rise of calcination temperature of the powders.

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Periodical:

Advanced Materials Research (Volumes 1120-1121)

Pages:

123-127

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1120-1121.123

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Online since:

July 2015

Authors:

Dong Huang, Wan Li Lu, Jin Ying Pang, Guo Wei Mo, Shu Juan Yu, Guang Jian Zheng*

Keywords:

Al₂O₃-2SiO₂ Powders, Alkali-Activation Reactivity, Geopolymers, Preparation Conditions Optimization

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* - Corresponding Author

References

[1] J. Davidovits, Geopolymers: inorganic polymeric new materials, J. Thermal. Anal. 37(1991) 1633 –1656.

DOI: 10.1007/bf01912193

Google Scholar

[2] G.M. Whitesides, J. P . Mathias, C.T. Seto, Molecular self-assembly and nanochemistry: A chemical strategy for the synthesis of nanostructures. Science, 254 (1991), 1312–1319.

DOI: 10.1126/science.1962191

Google Scholar

[3] L. Ma, A.P. Chen, J.D. Lu, Z. Zhang, H.B. He, C.Z. Li, In situ synthesis of CNTs/Fe–Ni/TiO2 nanocomposite by fluidized bed chemical vapor deposition and the synergistic effect in photocatalysis. Particuology, 14 (2014) 24-32.

DOI: 10.1016/j.partic.2013.04.002

Google Scholar

[4] G.J. Zheng, X.M. Cui, W.P. Zhang, Z.F. Tong,. Preparation of geopolymer precursors by sol–gel method and their characterization. J Mater Sci, 44(2009), 3991–3997.

DOI: 10.1007/s10853-009-3549-x

Google Scholar

[5] G.J. Zheng, et al, Alkali-activation reactivity of chemosynthetic Al2O3–2SiO2 powders and their 27Al and 29Si magic-angle spinning nuclear magnetic resonance spectra. Particuology (2015), http: /dx. doi. org/10. 1016/j. partic. 2014. 10. 006.

DOI: 10.1016/j.partic.2014.10.006

Google Scholar

[6] J. Rocha, J. Klinowski: Solid-State NMR Studies of the Structure and Reactivity of Metakaolinite. Angew. Chem. Int. End. Eng. 29 (1990) 553-554.

DOI: 10.1002/anie.199005531

Google Scholar

[7] J. Rocha, J. Klinowski: 29Si and 27Al magic angle－spinning NMR studies of the thermal transformation of kaolinite. Phys. Chem. Minerals Vol. 17 (1990) 179-182.

DOI: 10.1007/bf00199671

Google Scholar