Thermochemical decomposition of H2O to H-2 on cation-excess ferrite

被引：30

作者：

Kojima, M

Sano, T

Wada, Y

Yamamoto, T

Tsuji, M

Tamaura, Y

机构：

[1] Tokyo Institute of Technology, Res. Ctr. Carbon Recycling Utiliz., Tokyo, 2-12-1, Ookayama, Meguro-ku

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1996年 / 57卷 / 11期

关键词：

ceramics; oxides; chemical synthesis; X-ray diffraction; Mossbauer spectroscopy;

D O I：

10.1016/0022-3697(96)00328-9

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A cation-excess (Ni, Mn) ferrite Ni0.52Mn0.51Fe2.05O4.0 with a single phase was synthesized by heating the mixture of corresponding metal salts and oxide in 5% O-2/75% CO2/20% N-2 gas mixture for 18 h at 1100 degrees C. It could be thermochemically activated to form a cation-excess ferrite Ni-0.51(1+epsilon)Mn-0.50(1+epsilon) Fe-1.99(1+epsilon)O-4.0 in N-2 gas at elevated temperature: The epsilon value was 0.031 at 1100 degrees C. The activated (Ni, Mn) ferrite was reacted with water to form H-2 gas at 700 degrees C. The process was reversible and could be carried out repeatedly. The solid was studied by Mossbauer and XRD spectrometries.

引用

页码：1757 / 1763

页数：7

共 26 条

[1] CHARACTERIZATION OF CARBON DEPOSITED FROM CARBON-DIOXIDE ON OXYGEN-DEFICIENT MAGNETITES [J].