Magnesium hydroxide dehydroxylation/carbonation reaction processes: Implications for carbon dioxide mineral sequestration

Hamdallah Béarat, Michael J. McKelvy, Andrew Chizmeshya, Renu Sharma, Ray Carpenter

Research output: Contribution to journalArticle

95 Citations (Scopus)

Abstract

Gas-phase magnesium hydroxide carbonation processes were investigated at high CO2 pressures to better understand the reaction mechanisms involved. Carbon and hydrogen elemental analysis, secondary ion mass spectrometry, ion beam analysis, X-ray diffraction, and thermogravimetric analysis were used to follow dehydroxylation/rehydroxylation/carbonation reaction processes. Dehydroxylation is found to generally precede carbonation as a distinct but interrelated process. Above the minimum CO2 pressure for brucite carbonation, both carbonation and dehydroxylation reactivity decrease with increasing CO2 pressure. Low-temperature dehydroxylation before carbonation can form porous intermediate materials with enhanced carbonation reactivity at reduced (e.g., ambient) temperature and pressure. Control of dehydroxylation/rehydroxylation reactions before and/or during carbonation can substantially enhance carbonation reactivity.

Original languageEnglish (US)
Pages (from-to)742-748
Number of pages7
JournalJournal of the American Ceramic Society
Volume85
Issue number4
StatePublished - Apr 2002

Fingerprint

Magnesium Hydroxide
Carbonation
Carbon Dioxide
Minerals
Magnesium
Carbon dioxide
Secondary ion mass spectrometry
X ray diffraction analysis
Ion beams
Thermogravimetric analysis
Hydrogen
Carbon
Gases

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Magnesium hydroxide dehydroxylation/carbonation reaction processes : Implications for carbon dioxide mineral sequestration. / Béarat, Hamdallah; McKelvy, Michael J.; Chizmeshya, Andrew; Sharma, Renu; Carpenter, Ray.

In: Journal of the American Ceramic Society, Vol. 85, No. 4, 04.2002, p. 742-748.

Research output: Contribution to journalArticle

@article{aacc8cf22f62490690481a0aeea82aaa,
title = "Magnesium hydroxide dehydroxylation/carbonation reaction processes: Implications for carbon dioxide mineral sequestration",
abstract = "Gas-phase magnesium hydroxide carbonation processes were investigated at high CO2 pressures to better understand the reaction mechanisms involved. Carbon and hydrogen elemental analysis, secondary ion mass spectrometry, ion beam analysis, X-ray diffraction, and thermogravimetric analysis were used to follow dehydroxylation/rehydroxylation/carbonation reaction processes. Dehydroxylation is found to generally precede carbonation as a distinct but interrelated process. Above the minimum CO2 pressure for brucite carbonation, both carbonation and dehydroxylation reactivity decrease with increasing CO2 pressure. Low-temperature dehydroxylation before carbonation can form porous intermediate materials with enhanced carbonation reactivity at reduced (e.g., ambient) temperature and pressure. Control of dehydroxylation/rehydroxylation reactions before and/or during carbonation can substantially enhance carbonation reactivity.",
author = "Hamdallah B{\'e}arat and McKelvy, {Michael J.} and Andrew Chizmeshya and Renu Sharma and Ray Carpenter",
year = "2002",
month = "4",
language = "English (US)",
volume = "85",
pages = "742--748",
journal = "Journal of the American Ceramic Society",
issn = "0002-7820",
publisher = "Wiley-Blackwell",
number = "4",

}

TY - JOUR

T1 - Magnesium hydroxide dehydroxylation/carbonation reaction processes

T2 - Implications for carbon dioxide mineral sequestration

AU - Béarat, Hamdallah

AU - McKelvy, Michael J.

AU - Chizmeshya, Andrew

AU - Sharma, Renu

AU - Carpenter, Ray

PY - 2002/4

Y1 - 2002/4

N2 - Gas-phase magnesium hydroxide carbonation processes were investigated at high CO2 pressures to better understand the reaction mechanisms involved. Carbon and hydrogen elemental analysis, secondary ion mass spectrometry, ion beam analysis, X-ray diffraction, and thermogravimetric analysis were used to follow dehydroxylation/rehydroxylation/carbonation reaction processes. Dehydroxylation is found to generally precede carbonation as a distinct but interrelated process. Above the minimum CO2 pressure for brucite carbonation, both carbonation and dehydroxylation reactivity decrease with increasing CO2 pressure. Low-temperature dehydroxylation before carbonation can form porous intermediate materials with enhanced carbonation reactivity at reduced (e.g., ambient) temperature and pressure. Control of dehydroxylation/rehydroxylation reactions before and/or during carbonation can substantially enhance carbonation reactivity.

AB - Gas-phase magnesium hydroxide carbonation processes were investigated at high CO2 pressures to better understand the reaction mechanisms involved. Carbon and hydrogen elemental analysis, secondary ion mass spectrometry, ion beam analysis, X-ray diffraction, and thermogravimetric analysis were used to follow dehydroxylation/rehydroxylation/carbonation reaction processes. Dehydroxylation is found to generally precede carbonation as a distinct but interrelated process. Above the minimum CO2 pressure for brucite carbonation, both carbonation and dehydroxylation reactivity decrease with increasing CO2 pressure. Low-temperature dehydroxylation before carbonation can form porous intermediate materials with enhanced carbonation reactivity at reduced (e.g., ambient) temperature and pressure. Control of dehydroxylation/rehydroxylation reactions before and/or during carbonation can substantially enhance carbonation reactivity.

UR - http://www.scopus.com/inward/record.url?scp=0036544983&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036544983&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0036544983

VL - 85

SP - 742

EP - 748

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

SN - 0002-7820

IS - 4

ER -