Relationship between the microstructure and reaction performance of aluminosilicate

• Published in: International journal of minerals, metallurgy and materials Vol. 17; no. 1; pp. 108 - 115
• Main Authors: Liu, Xiao-ming, Sun, Heng-hu, Feng, Xiang-peng, Zhang, Na
• Format: Journal Article
• Language: English
• Published: Beijing University of Science and Technology Beijing 01.02.2010; Springer Nature B.V; Department of Civil and Environmental Engineering,University of Wisconsin,Madison WI 53706,USA%School of Engineering and Computer Science,University of the Pacific,Stockton CA 95211,USA%Shougang Environmental Protection Industry Department,Beijing 100041,China%Department of Civil and Environmental Engineering,University of Wisconsin,Madison WI 53706,USA; School of Resource and Safety Engineering,China University of Mining & Technology,Beijing 100083,China
• Subjects: Activation; Aluminosilicates; Aluminum; Aluminum oxide; Aluminum silicates; Anions; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composites; Corrosion and Coatings; Emission spectroscopy; Glass; Inductively coupled plasma; Materials Science; Metakaolin; Metallic Materials; Metallurgy; Natural Materials; NMR; NMR spectroscopy; NMR谱; Nuclear magnetic resonance; Optical emission spectroscopy; Silica; Silicates; Silicon; Silicon dioxide; Spinning; Spinning (materials); Surfaces and Interfaces; Thin Films; Tribology; 反应性能; 微观结构; 旋转磁场; 核磁共振; 等离子体发射光谱; 铝材料; 铝硅酸盐; aluminosilicate; calcination; microstructure; nuclear magnetic resonance; reaction performance; microstructure,nuclear magnetic resonance
• ISSN: 1674-4799; 1869-103X
• DOI: 10.1007/s12613-010-0119-9

A systematic study was conducted to comprehend the mechanism of thermal activation of silica-alumina materials by using ^29Si and ^27Al magnetic angle spinning nuclear magnetic resonance （MAS NMR） spectroscopy. The reaction performance of silica-alumina-based materials with different molar ratios of Si/Al, which were thermally activated, was also investigated. With the increase in calcining temperature, the coordination of Al in metakaolin becomes four, five, and six firstly, and then transforms completely to four and six. It is indicated by identical coupled plasma optical emission spectroscopy （ICP） and NMR that, the reaction performance of monomeric silicate anions is better than that of polymeric silicate anions which are primarily cross-linked in the alkali solution. Moreover, it also shows that the thermal activation temperature, cooling method, and the molar ratio of Na/Ca have remarkable effects on the reaction performance.