Towards understanding the thermoanalysis of water sorption on lithium orthosilicate (Li4SiO4)

J. Ortiz-Landeros; L. Martínez-Dlcruz; C. Gómez-Yáñez; H. Pfeiffer

doi:10.1016/j.tca.2010.12.025

Towards understanding the thermoanalysis of water sorption on lithium orthosilicate (Li₄SiO₄)

J. Ortiz-Landeros, L. Martínez-Dlcruz, C. Gómez-Yáñez, H. Pfeiffer

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

A systematic thermogravimetric study of hygroscopic and reactivity behaviors, at low temperatures of lithium orthosilicate (Li₄SiO ₄), are presented. Li₄SiO₄ sample was prepared by solid-state reaction and then treated at different temperature-humidity conditions. Li₄SiO₄ samples previously treated under different temperature-humidity conditions were characterized by Fourier transform infrared spectroscopy and thermogravimetric analyses. Different processes, adsorption and absorption, take place between the Li ₄SiO₄ and water vapor. Absorbed water produces superficial hydroxylated species such as Si-OH and Li-OH. In addition, a kinetic analysis was performed, and the different water absorption activation enthalpies were calculated. It was found that activation enthalpy (ΔH^‡) values decrease when the relative humidity is incremented, from 5528.6 J/mol to 2074.2 J/mol at relative humidity levels of 60% and 75% respectively. These results show the impact of different humidity and temperature conditions on the stability and/or chemical reactivity of Li₄SiO₄, if this ceramic is used in different application fields, such as carbon dioxide captor or as a breeder ceramic into the fusion reactors.

Original language	English
Pages (from-to)	73-78
Number of pages	6
Journal	Thermochimica Acta
Volume	515
Issue number	1-2
DOIs	https://doi.org/10.1016/j.tca.2010.12.025
State	Published - 10 Mar 2011
Externally published	Yes

Keywords

Lithium ceramics
Thermal analysis
Water sorption

Access to Document

10.1016/j.tca.2010.12.025

Cite this

@article{f2cf02265db846648599469ff77815bf,

title = "Towards understanding the thermoanalysis of water sorption on lithium orthosilicate (Li4SiO4)",

abstract = "A systematic thermogravimetric study of hygroscopic and reactivity behaviors, at low temperatures of lithium orthosilicate (Li4SiO 4), are presented. Li4SiO4 sample was prepared by solid-state reaction and then treated at different temperature-humidity conditions. Li4SiO4 samples previously treated under different temperature-humidity conditions were characterized by Fourier transform infrared spectroscopy and thermogravimetric analyses. Different processes, adsorption and absorption, take place between the Li 4SiO4 and water vapor. Absorbed water produces superficial hydroxylated species such as Si-OH and Li-OH. In addition, a kinetic analysis was performed, and the different water absorption activation enthalpies were calculated. It was found that activation enthalpy (ΔH‡) values decrease when the relative humidity is incremented, from 5528.6 J/mol to 2074.2 J/mol at relative humidity levels of 60% and 75% respectively. These results show the impact of different humidity and temperature conditions on the stability and/or chemical reactivity of Li4SiO4, if this ceramic is used in different application fields, such as carbon dioxide captor or as a breeder ceramic into the fusion reactors.",

keywords = "Lithium ceramics, Thermal analysis, Water sorption",

author = "J. Ortiz-Landeros and L. Mart{\'i}nez-Dlcruz and C. G{\'o}mez-Y{\'a}{\~n}ez and H. Pfeiffer",

note = "Funding Information: Authors thank to CONACYT and PIFI-IPN from which J. Ortiz-Landeros and L. Mart{\'i}nez-dlCruz are fellows, as well as CONACYT-SEMARNAT (project 23418) and ICyT-DF (179/2009) for financial support. Furthermore, authors thank to Miguel A. Canseco-Mart{\'i}nez, Adriana Tejeda and Esteban Fregoso for technical support.",

year = "2011",

month = mar,

day = "10",

doi = "10.1016/j.tca.2010.12.025",

language = "Ingl{\'e}s",

volume = "515",

pages = "73--78",

journal = "Thermochimica Acta",

issn = "0040-6031",

number = "1-2",

}

TY - JOUR

T1 - Towards understanding the thermoanalysis of water sorption on lithium orthosilicate (Li4SiO4)

AU - Ortiz-Landeros, J.

AU - Martínez-Dlcruz, L.

AU - Gómez-Yáñez, C.

AU - Pfeiffer, H.

N1 - Funding Information: Authors thank to CONACYT and PIFI-IPN from which J. Ortiz-Landeros and L. Martínez-dlCruz are fellows, as well as CONACYT-SEMARNAT (project 23418) and ICyT-DF (179/2009) for financial support. Furthermore, authors thank to Miguel A. Canseco-Martínez, Adriana Tejeda and Esteban Fregoso for technical support.

PY - 2011/3/10

Y1 - 2011/3/10

N2 - A systematic thermogravimetric study of hygroscopic and reactivity behaviors, at low temperatures of lithium orthosilicate (Li4SiO 4), are presented. Li4SiO4 sample was prepared by solid-state reaction and then treated at different temperature-humidity conditions. Li4SiO4 samples previously treated under different temperature-humidity conditions were characterized by Fourier transform infrared spectroscopy and thermogravimetric analyses. Different processes, adsorption and absorption, take place between the Li 4SiO4 and water vapor. Absorbed water produces superficial hydroxylated species such as Si-OH and Li-OH. In addition, a kinetic analysis was performed, and the different water absorption activation enthalpies were calculated. It was found that activation enthalpy (ΔH‡) values decrease when the relative humidity is incremented, from 5528.6 J/mol to 2074.2 J/mol at relative humidity levels of 60% and 75% respectively. These results show the impact of different humidity and temperature conditions on the stability and/or chemical reactivity of Li4SiO4, if this ceramic is used in different application fields, such as carbon dioxide captor or as a breeder ceramic into the fusion reactors.

AB - A systematic thermogravimetric study of hygroscopic and reactivity behaviors, at low temperatures of lithium orthosilicate (Li4SiO 4), are presented. Li4SiO4 sample was prepared by solid-state reaction and then treated at different temperature-humidity conditions. Li4SiO4 samples previously treated under different temperature-humidity conditions were characterized by Fourier transform infrared spectroscopy and thermogravimetric analyses. Different processes, adsorption and absorption, take place between the Li 4SiO4 and water vapor. Absorbed water produces superficial hydroxylated species such as Si-OH and Li-OH. In addition, a kinetic analysis was performed, and the different water absorption activation enthalpies were calculated. It was found that activation enthalpy (ΔH‡) values decrease when the relative humidity is incremented, from 5528.6 J/mol to 2074.2 J/mol at relative humidity levels of 60% and 75% respectively. These results show the impact of different humidity and temperature conditions on the stability and/or chemical reactivity of Li4SiO4, if this ceramic is used in different application fields, such as carbon dioxide captor or as a breeder ceramic into the fusion reactors.

KW - Lithium ceramics

KW - Thermal analysis

KW - Water sorption

UR - http://www.scopus.com/inward/record.url?scp=79951812453&partnerID=8YFLogxK

U2 - 10.1016/j.tca.2010.12.025

DO - 10.1016/j.tca.2010.12.025

M3 - Artículo

SN - 0040-6031

VL - 515

SP - 73

EP - 78

JO - Thermochimica Acta

JF - Thermochimica Acta

IS - 1-2

ER -

Towards understanding the thermoanalysis of water sorption on lithium orthosilicate (Li₄SiO₄)

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this