CO2 adsorption studies on hydroxy metal carbonates M(CO 3)x(OH)y (M = Zn, Zn-Mg, Mg, Mg-Cu, Cu, Ni, and Pb) at high pressures up to 175 bar

Ferdi Karadas, Cafer T. Yavuz, Sonia Zulfiqar, Santiago Aparicio, Galen D. Stucky, Mert Atilhan

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34 Scopus citations

Abstract

Carbon dioxide (CO2) adsorption capacities of several hydroxy metal carbonates have been studied using the state-of-the-art Rubotherm sorption apparatus to obtain adsorption and desorption isotherms of these compounds up to 175 bar. The carbonate compounds were prepared by simply reacting a carbonate (CO32-) solution with solutions of Zn2+, Zn2+/Mg2+, Mg2+, Cu2+/Mg 2+, Cu2+, Pb2+, and Ni2+ metal ions, resulting in hydroxyzincite, hydromagnesite, mcguinnessite, malachite, nullaginite, and hydrocerussite, respectively. Mineral compositions are calculated by using a combination of powder XRD, TGA, FTIR, and ICP-OES analysis. Adsorption capacities of hydroxy nickel carbonate compound observed from Rubotherm magnetic suspension sorption apparatus has shown highest performance among the other components that were investigated in this work (1.72 mmol CO2/g adsorbent at 175 bar and 316 K). © 2011 American Chemical Society.
Original languageEnglish (US)
Pages (from-to)10642-10647
Number of pages6
JournalLangmuir
Volume27
Issue number17
DOIs
StatePublished - Sep 6 2011
Externally publishedYes

ASJC Scopus subject areas

  • Spectroscopy
  • Materials Science(all)
  • Surfaces and Interfaces
  • Electrochemistry
  • Condensed Matter Physics

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