@article{Goñi_Peña_Guerrero_2010, title={Hydrothermal Synthesis of Zeolite from Coal Class F Fly Ash. Influence of Temperature}, volume={60}, url={https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/166}, DOI={10.3989/mc.2010.47808}, abstractNote={The influence of temperature of alkaline hydrothermal treatment on the conversion in zeolite of Spanish coal low calcium-fly ash (ASTM class F) is presented in this work. Zeolite Na-P1 gismondine type (Na<sub>6</sub>Al<sub>6</sub>Si<sub>10</sub>O<sub>32</sub>.12H<sub>2</sub>O) was formed at the temperature of 100ºC, which transformed in zeolite; analcime-C type (Na(Si<sub>2</sub>Al)O<sub>6</sub>H<sub>2</sub>O) and sodalite (1.08 Na<sub>2</sub>O.Al<sub>2</sub>O<sub>3</sub>.1.68SiO<sub>2</sub>.1.8H<sub>2</sub>O) at 200ºC together with traces of tobermorite-11Å (Ca<sub>5</sub>(OH)<sub>2</sub>Si<sub>6</sub>O<sub>16</sub>.4H<sub>2</sub>O). At this temperature the 100% of the fly ash reaction was allowed. An equivalent study was carried out in water as reference. The zeolite conversion of the fly ash was characterized by X ray diffraction (XRD), FT infrared (FTIR) spectroscopy, surface area (BET-N<sub>2</sub>) and thermal analyses.}, number={298}, journal={Materiales de Construcción}, author={Goñi, S. and Peña, R. and Guerrero, A.}, year={2010}, month={Jun.}, pages={51–60} }