H2 and CO2 uptake for hydrogen titanate (H2Ti3O7) nanotubes and nanorods at ambient temperature and pressure

Sora Sim; Eun Bum Cho; Sriparna Chatterjee

doi:10.1016/j.cej.2016.05.099

H₂ and CO₂ uptake for hydrogen titanate (H₂Ti₃O₇) nanotubes and nanorods at ambient temperature and pressure

Sora Sim, Eun Bum Cho, Sriparna Chatterjee

Dept. of Fine Chemistry

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

13 Scopus citations

Abstract

H₂ and CO₂ adsorption was investigated using pristine hydrogen titanate nanotube (HTNT) and nanorod (HTNR). HTNT and HTNR were modified with N-[3-(trimethoxysilyl)propyl]ethylene-diamine (TPEDA). Chemical linkage between an amine-containing organosilane and titanium on the surface of hydrogen titanate was confirmed with ²⁹Si CP-MAS NMR spectrum. H₂ and CO₂ uptake on several hydrogen titanate samples was obtained by a TGA Q50 analyzer in flowing N₂ gas of 40 mL/min and CO₂ gas of 60 mL/min at 25 °C and 1 atm. Pristine HTNT sample showed the highest H₂ uptake (i.e. ~12.5 mmol/g) on a TGA microbalance at 25 °C whereas amine-modified HTNT sample exhibited the highest CO₂ uptake (i.e. ~1.2 mmol/g) among all samples studied. CO₂/N₂ and H₂/N₂ selectivity for pristine and amine-modified HTNT samples was investigated by comparing the weight of the sample in flowing pure N₂ gas of 100 mL/min with above-mentioned mixed flows at 25 °C. Reversibility for CO₂ and H₂ uptake showed good performance for 9 cycles.

Original language	English
Pages (from-to)	64-72
Number of pages	9
Journal	Chemical Engineering Journal
Volume	303
DOIs	https://doi.org/10.1016/j.cej.2016.05.099
State	Published - 1 Nov 2016

Keywords

Amine-modification
Carbon dioxide capture
Hydrogen storage
Hydrogen titanate
Nanorod
Nanotube

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.cej.2016.05.099

Cite this

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title = "H2 and CO2 uptake for hydrogen titanate (H2Ti3O7) nanotubes and nanorods at ambient temperature and pressure",

abstract = "H2 and CO2 adsorption was investigated using pristine hydrogen titanate nanotube (HTNT) and nanorod (HTNR). HTNT and HTNR were modified with N-[3-(trimethoxysilyl)propyl]ethylene-diamine (TPEDA). Chemical linkage between an amine-containing organosilane and titanium on the surface of hydrogen titanate was confirmed with 29Si CP-MAS NMR spectrum. H2 and CO2 uptake on several hydrogen titanate samples was obtained by a TGA Q50 analyzer in flowing N2 gas of 40 mL/min and CO2 gas of 60 mL/min at 25 °C and 1 atm. Pristine HTNT sample showed the highest H2 uptake (i.e. \textasciitilde{}12.5 mmol/g) on a TGA microbalance at 25 °C whereas amine-modified HTNT sample exhibited the highest CO2 uptake (i.e. \textasciitilde{}1.2 mmol/g) among all samples studied. CO2/N2 and H2/N2 selectivity for pristine and amine-modified HTNT samples was investigated by comparing the weight of the sample in flowing pure N2 gas of 100 mL/min with above-mentioned mixed flows at 25 °C. Reversibility for CO2 and H2 uptake showed good performance for 9 cycles.",

keywords = "Amine-modification, Carbon dioxide capture, Hydrogen storage, Hydrogen titanate, Nanorod, Nanotube",

author = "Sora Sim and Cho, \{Eun Bum\} and Sriparna Chatterjee",

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AU - Sim, Sora

AU - Cho, Eun Bum

AU - Chatterjee, Sriparna

PY - 2016/11/1

Y1 - 2016/11/1

N2 - H2 and CO2 adsorption was investigated using pristine hydrogen titanate nanotube (HTNT) and nanorod (HTNR). HTNT and HTNR were modified with N-[3-(trimethoxysilyl)propyl]ethylene-diamine (TPEDA). Chemical linkage between an amine-containing organosilane and titanium on the surface of hydrogen titanate was confirmed with 29Si CP-MAS NMR spectrum. H2 and CO2 uptake on several hydrogen titanate samples was obtained by a TGA Q50 analyzer in flowing N2 gas of 40 mL/min and CO2 gas of 60 mL/min at 25 °C and 1 atm. Pristine HTNT sample showed the highest H2 uptake (i.e. ~12.5 mmol/g) on a TGA microbalance at 25 °C whereas amine-modified HTNT sample exhibited the highest CO2 uptake (i.e. ~1.2 mmol/g) among all samples studied. CO2/N2 and H2/N2 selectivity for pristine and amine-modified HTNT samples was investigated by comparing the weight of the sample in flowing pure N2 gas of 100 mL/min with above-mentioned mixed flows at 25 °C. Reversibility for CO2 and H2 uptake showed good performance for 9 cycles.

AB - H2 and CO2 adsorption was investigated using pristine hydrogen titanate nanotube (HTNT) and nanorod (HTNR). HTNT and HTNR were modified with N-[3-(trimethoxysilyl)propyl]ethylene-diamine (TPEDA). Chemical linkage between an amine-containing organosilane and titanium on the surface of hydrogen titanate was confirmed with 29Si CP-MAS NMR spectrum. H2 and CO2 uptake on several hydrogen titanate samples was obtained by a TGA Q50 analyzer in flowing N2 gas of 40 mL/min and CO2 gas of 60 mL/min at 25 °C and 1 atm. Pristine HTNT sample showed the highest H2 uptake (i.e. ~12.5 mmol/g) on a TGA microbalance at 25 °C whereas amine-modified HTNT sample exhibited the highest CO2 uptake (i.e. ~1.2 mmol/g) among all samples studied. CO2/N2 and H2/N2 selectivity for pristine and amine-modified HTNT samples was investigated by comparing the weight of the sample in flowing pure N2 gas of 100 mL/min with above-mentioned mixed flows at 25 °C. Reversibility for CO2 and H2 uptake showed good performance for 9 cycles.

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