Hydrogen adsorption on high surface area Cr2O3 materials. Issue 9 (24th June 2013)

• Record Type: Journal Article
• Authors: Fan, Jinglian; Cheng, Yongxiang; Xie, Zunyun; Jin, Lingyun; Hu, Gengshen; Lu, Jiqing; Luo, Mengfei; Wang, Yuejuan
• Is Part Of: Physica status solidi. Volume 210:Issue 9(2013:Sep.)
• Page Start: 1920
• Page End: 1924
• Publication Date: 2013-06-24
• Subjects: Solid state physics -- Periodicals; Solids -- Industrial applications -- Periodicals; 530.41
• DOI: 10.1002/pssa.201329229
• Languages: English
• ISSNs: 1862-6300

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="pssa201329229-sec-0001" sec-type="section"> <p>Amorphous Cr₂O₃ materials with high surface areas were prepared via a precipitation process with CrCl₃ · 6H₂O as the raw material, (NH₄)₂CO₃, NH₃ · H₂O, and KOH as precipitating agents. Calcination of Cr(OH)₃ precipitation at low temperatures (300–400 °C) resulted in amorphous Cr₂O₃ materials with high surface areas, while high‐temperature calcination (500–600 °C) led to crystalline Cr₂O₃. The hydrogen‐adsorption phenomenon was clearly observed in a hydrogen atmosphere on the amorphous Cr₂O₃ materials with high surface area. The adsorbed hydrogen desorbed at about 550 °C due to the phase transition from amorphous to crystalline. However, this phenomenon was not observed for crystalline Cr₂O₃.</p> </sec> </abstract>