<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>The paper investigates the properties of sodium zeolites synthesized using the hydrothermal method under autogenous pressure at low temperature with NaOH solutions of varying concentrations. During this modification, zeolites X, Na-P1 and hydroxysodalite were synthesized. The synthesis parameters, and thus, phase composition of resulting samples, significantly affected the specific surface area (SSA) and cation exchange capacity (CEC). SSA increased from 2.9 m2/g to a maximum of 501.2 m2/g, while CEC rose from 16 meq/100 g to a maximum of 500 meq/100 g. The best properties for use as a sorbent were obtained for perlite waste modified with 4.0 M NaOH at 70 °C or 80 °C.</p></abstract>

The paper investigates the properties of sodium zeolites synthesized using the hydrothermal method under autogenous pressure at low temperature with NaOH solutions of varying concentrations. During this modification, zeolites X, Na-P1 and hydroxysodalite were synthesized. The synthesis parameters, and thus, phase composition of resulting samples, significantly affected the specific surface area (SSA) and cation exchange capacity (CEC). SSA increased from 2.9 m2/g to a maximum of 501.2 m2/g, while CEC rose from 16 meq/100 g to a maximum of 500 meq/100 g. The best properties for use as a sorbent were obtained for perlite waste modified with 4.0 M NaOH at 70 °C or 80 °C.

Low-temperature synthesis of zeolite from perlite waste — Part II: characteristics of the products

Faculty of Materials Science and Ceramic, AGH University of Science and Technology, 30 Mickiewicza Av., 30-059, Krakow, Poland

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The paper investigates the properties of sodium zeolites synthesized using the hydrothermal method under autogenous pressure at low temperature with NaOH...

Low-temperature synthesis of zeolite from perlite waste — Part II: characteristics of the products

Publié en ligne: 19 déc. 2014

Pages: 526 - 532

DOI: https://doi.org/10.2478/s13536-014-0217-x

Mots clés
synthesis of zeolites, expanded perlite waste, cation exchange capacity (CEC), specific surface area

© 2014 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Low-temperature synthesis of zeolite from perlite waste — Part II: characteristics of the products

Publié en ligne: 19 déc. 2014

Pages: 526 - 532

DOI: https://doi.org/10.2478/s13536-014-0217-x

Mots cléssynthesis of zeolites, expanded perlite waste, cation exchange capacity (CEC), specific surface area

© 2014 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
synthesis of zeolites, expanded perlite waste, cation exchange capacity (CEC), specific surface area