Markedly improved CO2 capture efficiency and stability of gallium substituted hydrotalcites at elevated temperatures

Cafer T. Yavuz; Brian D. Shinall; Alexei V. Iretskii; Mark G. White; Tim Golden; Mert Atilhan; Peter C. Ford; Galen D. Stucky

doi:10.1021/cm900834g

Markedly improved CO2 capture efficiency and stability of gallium substituted hydrotalcites at elevated temperatures

Cafer T. Yavuz, Brian D. Shinall, Alexei V. Iretskii, Mark G. White, Tim Golden, Mert Atilhan, Peter C. Ford, Galen D. Stucky

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

77 Scopus citations

Abstract

A study was conducted to investigate improved CO2 capture efficiency and stability of gallium substituted hydrotalcites at elevated temperatures. Gallium substituted hydrotalcites (Ga-SHT) were prepared by a procedure slightly modified from the conventional hydrotalcite synthesis. Ga-SHT were customized by stirring a 1 g portion of the material in 50 mL of water containing 2.0 M potassium carbonate for 2 hours before removing the water at 70 °C under a slight vacuum. The SHTs were also converted into the CO2 adsorbents by calcining at 400 °C in an inert gas atmosphere. The CO2 experiments were conducted at 200 °C and the CO2 partial pressure was 0.7 atm. The CO2 adsorption capacities were obtained using a thermal gravimetric apparatus (TGA) to measure weight gain under a dry gas stream containing CO2 and an inert gas.

Original language	English (US)
Pages (from-to)	3473-3475
Number of pages	3
Journal	Chemistry of Materials
Volume	21
Issue number	15
DOIs	https://doi.org/10.1021/cm900834g
State	Published - Aug 11 2009
Externally published	Yes

ASJC Scopus subject areas

Materials Chemistry
General Chemical Engineering
General Chemistry

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10.1021/cm900834g

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title = "Markedly improved CO2 capture efficiency and stability of gallium substituted hydrotalcites at elevated temperatures",

abstract = "A study was conducted to investigate improved CO2 capture efficiency and stability of gallium substituted hydrotalcites at elevated temperatures. Gallium substituted hydrotalcites (Ga-SHT) were prepared by a procedure slightly modified from the conventional hydrotalcite synthesis. Ga-SHT were customized by stirring a 1 g portion of the material in 50 mL of water containing 2.0 M potassium carbonate for 2 hours before removing the water at 70 °C under a slight vacuum. The SHTs were also converted into the CO2 adsorbents by calcining at 400 °C in an inert gas atmosphere. The CO2 experiments were conducted at 200 °C and the CO2 partial pressure was 0.7 atm. The CO2 adsorption capacities were obtained using a thermal gravimetric apparatus (TGA) to measure weight gain under a dry gas stream containing CO2 and an inert gas.",

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T1 - Markedly improved CO2 capture efficiency and stability of gallium substituted hydrotalcites at elevated temperatures

AU - Yavuz, Cafer T.

AU - Shinall, Brian D.

AU - Iretskii, Alexei V.

AU - White, Mark G.

AU - Golden, Tim

AU - Atilhan, Mert

AU - Ford, Peter C.

AU - Stucky, Galen D.

N1 - Generated from Scopus record by KAUST IRTS on 2021-03-16

PY - 2009/8/11

Y1 - 2009/8/11

N2 - A study was conducted to investigate improved CO2 capture efficiency and stability of gallium substituted hydrotalcites at elevated temperatures. Gallium substituted hydrotalcites (Ga-SHT) were prepared by a procedure slightly modified from the conventional hydrotalcite synthesis. Ga-SHT were customized by stirring a 1 g portion of the material in 50 mL of water containing 2.0 M potassium carbonate for 2 hours before removing the water at 70 °C under a slight vacuum. The SHTs were also converted into the CO2 adsorbents by calcining at 400 °C in an inert gas atmosphere. The CO2 experiments were conducted at 200 °C and the CO2 partial pressure was 0.7 atm. The CO2 adsorption capacities were obtained using a thermal gravimetric apparatus (TGA) to measure weight gain under a dry gas stream containing CO2 and an inert gas.

AB - A study was conducted to investigate improved CO2 capture efficiency and stability of gallium substituted hydrotalcites at elevated temperatures. Gallium substituted hydrotalcites (Ga-SHT) were prepared by a procedure slightly modified from the conventional hydrotalcite synthesis. Ga-SHT were customized by stirring a 1 g portion of the material in 50 mL of water containing 2.0 M potassium carbonate for 2 hours before removing the water at 70 °C under a slight vacuum. The SHTs were also converted into the CO2 adsorbents by calcining at 400 °C in an inert gas atmosphere. The CO2 experiments were conducted at 200 °C and the CO2 partial pressure was 0.7 atm. The CO2 adsorption capacities were obtained using a thermal gravimetric apparatus (TGA) to measure weight gain under a dry gas stream containing CO2 and an inert gas.

UR - https://pubs.acs.org/doi/10.1021/cm900834g

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U2 - 10.1021/cm900834g

DO - 10.1021/cm900834g

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SP - 3473

EP - 3475

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 15

ER -

Markedly improved CO2 capture efficiency and stability of gallium substituted hydrotalcites at elevated temperatures

Abstract

ASJC Scopus subject areas

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