The influence of dealumination/desilication on structural properties of metakaolin-based geopolymers

被引：30
作者：
Brylewska, Kamila [1 ,2 ]
Rozek, Piotr [1 ]
Krol, Magdalena [1 ]
Mozgawa, Wlodzimierz [1 ]
机构：
[1] AGH Univ Sci & Technol, Fac Mat Sci & Ceram, Al Mickiewicza 30, PL-30059 Krakow, Poland
[2] Jagiellonian Univ, Fac Chem, Gronostajowa 2, PL-30387 Krakow, Poland
来源：
CERAMICS INTERNATIONAL | 2018年 / 44卷 / 11期
关键词：
Geopolymer; Dealumination; Desilication; Mesoporosity; Metakaolin; ACTIVATED FLY-ASH; MECHANICAL-PROPERTIES; SILICATE-GLASSES; ATR-FTIR; ZEOLITE; DESILICATION; PERFORMANCE; MICROSTRUCTURE; ADSORPTION; ALUMINUM;
D O I：
10.1016/j.ceramint.2018.04.095
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The work presents the results of research on the structure modification of metakaolin-based geopolymers with different Si/Al molar ratios in order to obtain hierarchically mesoporous materials. Post-synthesis treatment techniques were applied, involving desilication (with NaOH solution), dealumination (with Na2H2 EDTA solution) and the combination of both methods. The structural, microstructural and textural properties were characterized by XRD, XRF, FT-IR, Raman spectroscopy, SEM and BET. At lower Si/Al ratio amorphous geopolymer with zeolite A was obtained. Subsequent dealumination/desilication caused the significant increase in mesopores volume.
引用
收藏
页码：12853 / 12861
页数：9
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