[1] Dong Wei, Chen Xiaoping, Yu Fan,. CO2 capture using dry TiO2-doped Na2CO3/Al2O3 sorbentsin a fluidized-bed reactor [J]. Journal of Southeast University (English Edition), 2015, 31 (2): 220-225. [doi:10.3969/j.issn.1003-7985.2015.02.011]

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CO₂ capture using dry TiO₂-doped Na₂CO₃/Al₂O₃ sorbentsin a fluidized-bed reactor()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

31

Issue:

2015 2

Page:

220-225

Research Field:

Energy and Power Engineering

Publishing date:

2015-06-20

Info

Title:

CO₂ capture using dry TiO₂-doped Na₂CO₃/Al₂O₃ sorbentsin a fluidized-bed reactor

Author(s):

Dong Wei;  Chen Xiaoping;  Yu Fan

Key Laboratory of Energy Thermal Conversion and Control, Ministry of Education, Southeast University, Nanjing 210096, China

Keywords:

CO₂ capture;  Na₂CO₃/Al₂O₃;  TiO₂;  fluidized-bed test

PACS:

TK09

DOI:

10.3969/j.issn.1003-7985.2015.02.011

Abstract:

In order to improve the reactivity of Na₂CO₃/Al₂O₃ sorbent with CO₂, a new sorbent showing high reactivity was developed by doping Na₂CO₃/Al₂O₃ with TiO₂ using impregnation. Fourteen multi-cycle carbonation/regeneration tests of the sorbent were carried out in a fluidized-bed reactor and the sorbent was characterized by X-ray diffraction and nitrogen adsorption. It is confirmed that TiO₂ shows a positive effect on the adsorption process of Na₂CO₃ and the reaction rate is observed to increase significantly, especially in the first 10 min. Moreover, TiO₂ is stable within the temperature range of the process and no other Ti-compounds are detected. The carbonation products are NaHCO₃ and Na₅H₃(CO₃)₄. The surface area and the pore volume of the sorbent keep stable after 14 cycles. The Fourier transform infrared spectroscopy and the X-ray photoelectron spectroscopy are used to analyze the effect mechanism of TiO₂ on CO₂ adsorption process of Na₂CO₃/Al₂O₃.

References:

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Memo

Memo:

Biographies: Dong Wei(1986—), male, graduate; Chen Xiaoping(corresponding author), male, doctor, professor, xpchen@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.51476030), the Specialized Research Fund for the Doctoral Program of Higher Education(No.20130092110006).
Citation: Dong Wei, Chen Xiaoping, Yu Fan. CO₂ capture using dry TiO₂-doped Na₂CO₃/Al₂O₃ sorbents in a fluidized-bed reactor[J].Journal of Southeast University(English Edition), 2015, 31(2):220-225.[doi:10.3969/j.issn.1003-7985.2015.02.011]

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