In-situ ultrasound study of the kinetics of formation of zeolites Na-A and Na-X from coal fly ash

Eric Hums; Nicholas M. Musyoka; Hasan Baser; Alexandra Inayat; Wilhelm Schwieger

doi:10.1007/s11164-014-1531-y

In-situ ultrasound study of the kinetics of formation of zeolites Na-A and Na-X from coal fly ash

Eric Hums, Nicholas M. Musyoka, Hasan Baser, Alexandra Inayat, Wilhelm Schwieger

Research output: Journal Publication › Article › peer-review

8 Citations (Scopus)

Abstract

The kinetics of synthesis of zeolites Na-A and Na-X from fused South African class F coal fly ash were studied by using an ultrasound device as a real-time, in-situ diagnostic tool. Ex-situ techniques, for example XRD, ICP, and SEM, were used to complement the results of the kinetic study. Reaction rate, reaction order, and activation energy of crystallization processes in clear solution extracted from fused fly ash were calculated on the basis of ultrasound signal data recorded at different crystallization temperatures. Zeolite Na-X and zeolite Na-A crystals were both obtained without ageing. The zeolite Na-X sample showed contaminations of zeolite P and sodalite depending on the synthesis temperature. For zeolite Na-A the impact of ageing on the process of formation was also studied.

Original language	English
Pages (from-to)	4311-4326
Number of pages	16
Journal	Research on Chemical Intermediates
Volume	41
Issue number	7
DOIs	https://doi.org/10.1007/s11164-014-1531-y
Publication status	Published - 1 Jul 2015
Externally published	Yes

Keywords

Coal fly ash
In-situ
Kinetics
Ultrasound
Zeolite Na-A
Zeolite Na-X

ASJC Scopus subject areas

General Chemistry

Access to Document

10.1007/s11164-014-1531-y

Cite this

@article{f994a99cbd99493db501cdf3f7863ce3,

title = "In-situ ultrasound study of the kinetics of formation of zeolites Na-A and Na-X from coal fly ash",

abstract = "The kinetics of synthesis of zeolites Na-A and Na-X from fused South African class F coal fly ash were studied by using an ultrasound device as a real-time, in-situ diagnostic tool. Ex-situ techniques, for example XRD, ICP, and SEM, were used to complement the results of the kinetic study. Reaction rate, reaction order, and activation energy of crystallization processes in clear solution extracted from fused fly ash were calculated on the basis of ultrasound signal data recorded at different crystallization temperatures. Zeolite Na-X and zeolite Na-A crystals were both obtained without ageing. The zeolite Na-X sample showed contaminations of zeolite P and sodalite depending on the synthesis temperature. For zeolite Na-A the impact of ageing on the process of formation was also studied.",

keywords = "Coal fly ash, In-situ, Kinetics, Ultrasound, Zeolite Na-A, Zeolite Na-X",

author = "Eric Hums and Musyoka, {Nicholas M.} and Hasan Baser and Alexandra Inayat and Wilhelm Schwieger",

note = "Publisher Copyright: {\textcopyright} 2014 Springer Science+Business Media Dordrecht.",

year = "2015",

month = jul,

day = "1",

doi = "10.1007/s11164-014-1531-y",

language = "English",

volume = "41",

pages = "4311--4326",

journal = "Research on Chemical Intermediates",

issn = "0922-6168",

publisher = "Springer Netherlands",

number = "7",

}

TY - JOUR

T1 - In-situ ultrasound study of the kinetics of formation of zeolites Na-A and Na-X from coal fly ash

AU - Hums, Eric

AU - Musyoka, Nicholas M.

AU - Baser, Hasan

AU - Inayat, Alexandra

AU - Schwieger, Wilhelm

PY - 2015/7/1

Y1 - 2015/7/1

N2 - The kinetics of synthesis of zeolites Na-A and Na-X from fused South African class F coal fly ash were studied by using an ultrasound device as a real-time, in-situ diagnostic tool. Ex-situ techniques, for example XRD, ICP, and SEM, were used to complement the results of the kinetic study. Reaction rate, reaction order, and activation energy of crystallization processes in clear solution extracted from fused fly ash were calculated on the basis of ultrasound signal data recorded at different crystallization temperatures. Zeolite Na-X and zeolite Na-A crystals were both obtained without ageing. The zeolite Na-X sample showed contaminations of zeolite P and sodalite depending on the synthesis temperature. For zeolite Na-A the impact of ageing on the process of formation was also studied.

AB - The kinetics of synthesis of zeolites Na-A and Na-X from fused South African class F coal fly ash were studied by using an ultrasound device as a real-time, in-situ diagnostic tool. Ex-situ techniques, for example XRD, ICP, and SEM, were used to complement the results of the kinetic study. Reaction rate, reaction order, and activation energy of crystallization processes in clear solution extracted from fused fly ash were calculated on the basis of ultrasound signal data recorded at different crystallization temperatures. Zeolite Na-X and zeolite Na-A crystals were both obtained without ageing. The zeolite Na-X sample showed contaminations of zeolite P and sodalite depending on the synthesis temperature. For zeolite Na-A the impact of ageing on the process of formation was also studied.

KW - Coal fly ash

KW - In-situ

KW - Kinetics

KW - Ultrasound

KW - Zeolite Na-A

KW - Zeolite Na-X

UR - http://www.scopus.com/inward/record.url?scp=84932193241&partnerID=8YFLogxK

U2 - 10.1007/s11164-014-1531-y

DO - 10.1007/s11164-014-1531-y

M3 - Article

AN - SCOPUS:84932193241

SN - 0922-6168

VL - 41

SP - 4311

EP - 4326

JO - Research on Chemical Intermediates

JF - Research on Chemical Intermediates

IS - 7

ER -

In-situ ultrasound study of the kinetics of formation of zeolites Na-A and Na-X from coal fly ash

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this