caa a22 4500 388021047 CHVBK 20180307124924.0 cr unu---uuuuu 161130e199801 xx s 000 0 eng 10.1557/JMR.1998.0001 doi S0884291400042382 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0001 Characterization and cation exchange properties of zeolite synthesized from fly ashes [Elektronische Daten] Zeolite P was formed from class F fly ash under hydrothermal conditions. The fly ash was reacted with 2.8 or 5 M NaOH at 100 °C. Zeolite of the above type was produced regardless of the NaOH concentration or the addition of quartz, thus indicating its formation over a wide range of conditions. The zeolite produced was of the NaP-type with a fibrous morphology. Analysis of the pore structure of this zeolite by the BET method indicates a type II isotherm. The specific surface areas of synthesized zeolites increased from 28.5 to 41.1 m2/g when the NaOH concentration was increased from 2.8 to 5.0 M. This zeolite showed a significant selectivity for the uptake of Cs and Sr. Cs uptake ranged from 7.67 to 8.61 meq/100 g while that of Sr ranged from 9.8 to 10.54 meq/100 g. The value obtained depended on the specific synthesis conditions. These values are higher than those observed for tobermorite prepared from the same fly ash even though the tobermorite exhibited a higher specific surface area. Copyright © Materials Research Society 1998 Ma Weiping Intercollege Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802 Brown Paul W. Intercollege Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802 Komarneni Sridhar Intercollege Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802 Journal of Materials Research Cambridge University Press 13/1(1998-01), 3-7 0884-2914 13:1<3 1998 13 JMR https://doi.org/10.1557/JMR.1998.0001 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0001 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ma Weiping Intercollege Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802 NATIONALLICENCE 700 1- Brown Paul W. Intercollege Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802 NATIONALLICENCE 700 1- Komarneni Sridhar Intercollege Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802 NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/1(1998-01), 3-7 0884-2914 13:1<3 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge