Hydrogen adsorption on high surface area Cr2O3 materials

被引：4
作者：
Fan, Jinglian [1 ]
Cheng, Yongxiang [1 ]
Xie, Zunyun [1 ]
Jin, Lingyun [1 ]
Hu, Gengshen [1 ]
Lu, Jiqing [1 ]
Luo, Mengfei [1 ]
Wang, Yuejuan [1 ]
机构：
[1] Zhejiang Normal Univ, Inst Phys Chem, Minist Educ Adv Catalysis Mat, Key Lab, Jinhua 321004, Peoples R China
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2013年 / 210卷 / 09期
基金：
中国国家自然科学基金;
关键词：
adsorption; amorphous materials; Cr2O3; crystals; hydrogen; PERFORMANCE; OXIDATION; CATALYST;
D O I：
10.1002/pssa.201329229
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Amorphous Cr2O3 materials with high surface areas were prepared via a precipitation process with CrCl3 center dot 6H(2)O as the raw material, (NH4)(2)CO3, NH3 center dot H2O, and KOH as precipitating agents. Calcination of Cr(OH)(3) precipitation at low temperatures (300-400 degrees C) resulted in amorphous Cr2O3 materials with high surface areas, while high-temperature calcination (500-600 degrees 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 degrees C due to the phase transition from amorphous to crystalline. However, this phenomenon was not observed for crystalline Cr2O3.
引用
收藏
页码：1920 / 1924
页数：5
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