Thermal analysis of hydrogen titanate nanotubes prepared by potassium dititanate with water vapour treatment

Yujiao Xie; Chang Liu; Hanbing He; Xiaohua Lu

doi:10.1007/s10973-011-1912-z

Thermal analysis of hydrogen titanate nanotubes prepared by potassium dititanate with water vapour treatment

Yujiao Xie, Chang Liu, Hanbing He, Xiaohua Lu

College of Chemical Engineering

Nanjing Tech University

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

5 Scopus citations

Abstract

Hydrogen titanate nanotubes were prepared by K₂Ti ₂O₅ with water vapour treatment. TG/DTG techniques were used to investigate their water content and dehydration kinetics. It was shown that chemical formula for hydrogen titanate nanotubes is TiO_2.0. ₅₈H₂O which is close to H₂Ti₂O ₅. The activation energy of dehydration from hydrogen titanate nanotubes is about 60 kJ/mol according the calculation of Friedman and Flynn-Wall- Ozawa methods. With multivariate non-linear regression calculation, it was found that dehydration of hydrogen titanate nanotubes is a two-step consecutive reaction. The first step is a reaction of nth order with autocatalysis. The second step is a reaction of nth order.

Original language	English
Pages (from-to)	671-675
Number of pages	5
Journal	Journal of Thermal Analysis and Calorimetry
Volume	110
Issue number	2
DOIs	https://doi.org/10.1007/s10973-011-1912-z
State	Published - Nov 2012

Keywords

Chemical formula
Dehydration kinetics
Potassium dititanate
Titanate nanotubes

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title = "Thermal analysis of hydrogen titanate nanotubes prepared by potassium dititanate with water vapour treatment",

abstract = "Hydrogen titanate nanotubes were prepared by K2Ti 2O5 with water vapour treatment. TG/DTG techniques were used to investigate their water content and dehydration kinetics. It was shown that chemical formula for hydrogen titanate nanotubes is TiO2.0. 58H2O which is close to H2Ti2O 5. The activation energy of dehydration from hydrogen titanate nanotubes is about 60 kJ/mol according the calculation of Friedman and Flynn-Wall- Ozawa methods. With multivariate non-linear regression calculation, it was found that dehydration of hydrogen titanate nanotubes is a two-step consecutive reaction. The first step is a reaction of nth order with autocatalysis. The second step is a reaction of nth order.",

keywords = "Chemical formula, Dehydration kinetics, Potassium dititanate, Titanate nanotubes",

author = "Yujiao Xie and Chang Liu and Hanbing He and Xiaohua Lu",

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T1 - Thermal analysis of hydrogen titanate nanotubes prepared by potassium dititanate with water vapour treatment

AU - Xie, Yujiao

AU - Liu, Chang

AU - He, Hanbing

AU - Lu, Xiaohua

PY - 2012/11

Y1 - 2012/11

N2 - Hydrogen titanate nanotubes were prepared by K2Ti 2O5 with water vapour treatment. TG/DTG techniques were used to investigate their water content and dehydration kinetics. It was shown that chemical formula for hydrogen titanate nanotubes is TiO2.0. 58H2O which is close to H2Ti2O 5. The activation energy of dehydration from hydrogen titanate nanotubes is about 60 kJ/mol according the calculation of Friedman and Flynn-Wall- Ozawa methods. With multivariate non-linear regression calculation, it was found that dehydration of hydrogen titanate nanotubes is a two-step consecutive reaction. The first step is a reaction of nth order with autocatalysis. The second step is a reaction of nth order.

AB - Hydrogen titanate nanotubes were prepared by K2Ti 2O5 with water vapour treatment. TG/DTG techniques were used to investigate their water content and dehydration kinetics. It was shown that chemical formula for hydrogen titanate nanotubes is TiO2.0. 58H2O which is close to H2Ti2O 5. The activation energy of dehydration from hydrogen titanate nanotubes is about 60 kJ/mol according the calculation of Friedman and Flynn-Wall- Ozawa methods. With multivariate non-linear regression calculation, it was found that dehydration of hydrogen titanate nanotubes is a two-step consecutive reaction. The first step is a reaction of nth order with autocatalysis. The second step is a reaction of nth order.

KW - Chemical formula

KW - Dehydration kinetics

KW - Potassium dititanate

KW - Titanate nanotubes

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Thermal analysis of hydrogen titanate nanotubes prepared by potassium dititanate with water vapour treatment

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