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Synthesis and characterization of zeolites NaA and NaX from coal gangue

Zeitschrift:: Journal of Material Cycles and Waste Management > Ausgabe 1/2018

Autoren:: Jianlong Chen, Xinwei Lu

Abstract

Zeolites NaA and NaX were synthesized from initial coal gangue (milled sample) and pretreated coal gangue (calcinated and acid immersed sample) by an alkali fusion method prior to hydrothermal treatment, which started by mixing NaOH with coal gangue at an optimal weight ratio of nearly 1.2:1. Results show that zeolite NaA was successfully synthesized by alkali fusion at 650 and 950 °C from initial coal gangue, while zeolite NaX was synthesized by alkali fusion at 600 °C from pretreated coal gangue. Zeolites NaX with different specific surface area, external surface area, surface area of micropore and crystallinity were synthesized when the molar ratio of SiO₂/Al₂O₃ in raw materials ranges from 3.46 to 10.0.

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Titel: Synthesis and characterization of zeolites NaA and NaX from coal gangue
Autoren:: Jianlong Chen
Xinwei Lu
Publikationsdatum: 17.03.2017
DOI: https://doi.org/10.1007/s10163-017-0605-5
Verlag: Springer Japan
Zeitschrift: Journal of Material Cycles and Waste Management Official Journal of the Japan Society of Material Cycles and Waste Management (JSMCWM) and the Korea Society of Waste Management (KSWM)
Ausgabe 1/2018
Print ISSN: 1438-4957
Elektronische ISSN: 1611-8227

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