Atom-Economic Reaction: Preparation and Mechanism of Nano-SrB₂O₄ by Solid-State Reaction

Shiwen Ding, Xiangwei Xu, Guang Jia

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DOI: 10.4236/snl.2011.14020                

Abstract

Nano-SrB₂O₄ powder was prepared by solid-state reaction at room temperature followed by a subsequent calcination process. The highly productive method which can be operated easily confirms to the Green-chemistry principles. The XRD patters demonstrate that the component of the as-obtained sample is SrB₂O₄ after calcination at 600℃. Differential thermal analysis and thermogravimetriy (DTA/TG) curves suggest the process of dehydration and crystal transition from Sr[B(OH)₄]₂ to SrB₂O₄·2H₂O. SEM image of SrB₂O₄ shows that the particles are uniform and spherical with average size of 80 nm in diameter. Furthermore, the mechanism of reaction was discussed. The chemical reaction of the process is assumed to be acid-base neutralization reaction. The water generated from the acid-base neutralization reaction and the release of crystal water from Sr(OH)₂·8H₂O plays an essential role in the reaction system.

Keywords

Green-Chemistry Reaction, Nano-SrB₂O₄, Solid-State Reaction, Mechanism

Conflicts of Interest

The authors declare no conflicts of interest.

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