Treatment of sulfur and nitrogen oxides with mg-al oxide obtained by the thermal decomposition of mg-al layered double hydroxide

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

A new treatment method for SOx has been examined using a slurry of Mg-Al oxide in H2O. Dissolution of SOx in the slurry produces SOx˙Mg-Al LDH, which can be calcined to yield sulfuric acid, MgO, and MgAl2O4. In addition, the treatment of H2SO4 with Mg-Al oxide was examined in terms of kinetics and equilibrium studies in order to clarify the nature of the reaction between the Mg-Al oxide slurry and SOx. We also examined this Mg-Al oxide treatment method for NOx. The NOx dissolves in the Mg-Al oxide slurry and produces NOx˙Mg-Al LDH. The isolated NOx˙Mg-Al LDH can also be calcined, yielding in this case, nitric acid and the reconstituted Mg-Al oxide. In addition, the treatment of HNO3 with Mg-Al oxide was examined with respect to kinetics and equilibrium studies in order to clarify the nature of the interaction between the Mg-Al oxide and NOx. Finally, we demonstrated the simultaneous removal of SO2 and NO2 from a mixed gas stream using the Mg-Al oxide slurry treatment.

Original languageEnglish
Title of host publicationLayered Double Hydroxides (LDHs)
Subtitle of host publicationSynthesis, Characterization and Applications
PublisherNova Science Publishers, Inc.
Pages73-100
Number of pages28
ISBN (Electronic)9781634820400
ISBN (Print)9781634820240
Publication statusPublished - 2015 Apr 1

ASJC Scopus subject areas

  • Materials Science(all)

Fingerprint Dive into the research topics of 'Treatment of sulfur and nitrogen oxides with mg-al oxide obtained by the thermal decomposition of mg-al layered double hydroxide'. Together they form a unique fingerprint.

  • Cite this

    Kameda, T., & Yoshioka, T. (2015). Treatment of sulfur and nitrogen oxides with mg-al oxide obtained by the thermal decomposition of mg-al layered double hydroxide. In Layered Double Hydroxides (LDHs): Synthesis, Characterization and Applications (pp. 73-100). Nova Science Publishers, Inc..