Thermodynamic study based on the phase diagram of the Na2O-MnO-Fe2O3 system for H2 production in three-step water splitting with Na2CO3/MnFe2O4/Fe2O3

被引：17

作者：

Kaneko, H ^{[1
]}

Ochiai, Y ^{[1
]}

Shimizu, K ^{[1
]}

Hosokawa, Y ^{[1
]}

Gokon, N ^{[1
]}

Tamaura, Y ^{[1
]}

机构：

[1] Tokyo Inst Technol, Res Ctr Carbon Recycling & Utilizat, Meguro Ku, Tokyo 1528582, Japan

来源：

SOLAR ENERGY | 2002年 / 72卷 / 04期

关键词：

D O I：

10.1016/S0038-092X(02)00012-9

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The phase diagram of the Na2O-MnO-Fe2O3 system forms the basis for thermodynamic consideration of H-2 production in water splitting with the Na2CO3/MnFe2O4/Fe2O3 system. Sodium iron manganese oxides Na0.7-1 (Mn1-x, Fe-x)O2+delta. were observed in the phase diagram at T = 1273 K under P-O2 = 1.23 X 10(-5) atm. Confirmation of this phase, especially for x > 0.5, suggests the possibility of H-2 generation under this oxygen partial pressure and results in a value of 1:37 for the ratio of P-H2:P-H2O in the H-2 generation step of water splitting. This oxygen partial pressure is realized by the decomposition of carbon dioxide (CO2 = CO + 0.5O(2)) and it is concluded that the H-2 generation step can proceed under CO2 atmosphere. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：377 / 383

页数：7

共 31 条

[1] Photocatalytic degradation of phenol: Comparison between pilot-plant-scale and laboratory results [J].