Hydroxyl Sodalite Having Combustion Gas Purification Function

Abstract:

Hydroxyl sodalite (Na₈Al₆Si₆O₂₄(OH)₂) was investigated to develop a new ecofunctional material having removal performance for toxic substances including in combustion gas. Hydroxyl sodalite has nanometer-sized micro pore (β-cage) in the structure, and Cl^- ions derived from HCl gas were fixed in the pores above 400 °C. The amount of Cl^- ion fixed increased with increasing reaction temperature, and was the greatest, 7.3 wt% at 800 °C. In addition, it was found that Cu²⁺ ions were fixed in sodalite structure by substitution with Na⁺ ions by solid (hydroxyl sodalite) - gas (gaseous CuCl₂) reaction. The substitution quantity increased with increasing reaction temperature. The amount of Cu²⁺ ion substituted was 10.5 wt% as CuO at 900 °C. From the above results, it was concluded that hydroxyl sodalite is an ecomaterial which is useful for combustion gas purification in the high temperatures.

• Periodical: Applied Mechanics and Materials (Volume 749)
• Pages: 25-29
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.749.25
• Online since: April 2015
• Authors: Kenzi Suzuki*, Chun Shan Li
• Keywords: Combustion Gas Purification, Gaseous CuCl₂ Removal, HCL Gas Removal, Hydroxyl Sodalite, Reaction in High Temperature Region

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