Hydrogen reduction of Cu-Mn-Fe-O spinel solid solutions

被引：0

作者：

Zinovik, EV ^{[1
]}

Zinovik, MA ^{[1
]}

机构：

[1] Kirovograd Natl Tech Univ, UA-25006 Kirovograd, Ukraine

来源：

INORGANIC MATERIALS | 2005年 / 41卷 / 03期

关键词：

D O I：

10.1007/s10789-005-0122-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The crystal-chemical transformations accompanying the hydrogen reduction of CuxMn1-xFe2O4 (x = 0.2, 0.5, 0.8) solid solutions are investigated, and general equations describing these processes over the entire composition range (0 <= x <= 1) are derived. The results on the character of the processes involved differ radically from earlier findings. The equilibrium oxygen pressure is evaluated for the low-oxygen phase boundary of the spine] solid solutions throughout their stability region. For (MnFe2O4)(x1)(Cu0.5Fe2.5O4)(x2) (CuFe2O4)(1-x1-x2) solid solutions, which are of practical interest, the logP(O2) (1/T) data are well represented by the equation log (P-O2 /Pa) +/- 0.4 = 12.8 - 3.7(x1) - 2.8(x2) - 10280/T, which is of importance in controlled synthesis of single-phase materials in this system.

引用

页码：272 / 278

页数：7

共 50 条

[41] MOSSBAUER SPECTROSCOPIC ANALYSIS OF CU0.5MN0.5FE2O4 SPINEL
GUPTA, MP
BADRINARYANAN, S
SINHA, APB
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY, 1980, 19 (09): : 894 - 896
[42] Phase Relations in the Reduction of Solid Solutions in the Co–Mn–Ti–O System
A. M. Yankin
V. F. Balakirev
Inorganic Materials, 2001, 37 : 58 - 64
[43] STRUCTURAL PARAMETERS OF SPINEL SOLID-SOLUTIONS IN THE MG-V-FE-O SYSTEM
ZAKHAROV, RG
PONOMAREV, VI
SHCHEPETKIN, AA
INORGANIC MATERIALS, 1983, 19 (10) : 1545 - 1548
[44] THERMODYNAMIC PROPERTIES OF FE3O4-FEAL2O SPINEL SOLID-SOLUTIONS
PETRIC, A
JACOB, KT
ALCOCK, CB
JOURNAL OF METALS, 1980, 32 (12): : 55 - 55
[45] Non-isothermal reduction kinetics and mechanisms by hydrogen of Cu-Al spinel solid solution
Liu, Ya-Jie
Kang, He-Fei
Zhang, Liang-Liang
Xue, Cai-Long
Yuan, Li-Jing
Hou, Xiao-Ning
Zhang, Lei
Gao, Zhi-Xian
CATALYSIS COMMUNICATIONS, 2023, 173
[46] THERMODYNAMIC ANALYSIS OF DISSOCIATION REACTIONS OF SPINEL SOLID-SOLUTIONS IN CUFE2O4-MN3O4-FE3O4 SYSTEM
SHCHEPET.AA
ZINOVIK, MA
CHUFAROV, GI
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY,USSR, 1971, 45 (07): : 929 - &
[47] TETRAGONAL DISTORTION OF SPINEL SOLID-SOLUTIONS MNCR2O4-MN3O4
HOLBA, P
NEVRIVA, M
POLLERT, E
MATERIALS RESEARCH BULLETIN, 1975, 10 (08) : 853 - 860
[48] Electric conductivity of Fe2SiO4–Fe3O4 spinel solid solutions
T. Yamanaka
H. Shimazu
K. Ota
Physics and Chemistry of Minerals, 2001, 28 : 110 - 118
[49] Investigation of structure and morphology of Cu-Mn-Zr-Ce-O solid solutions
Zagaynov, I. V.
Konovalov, A. A.
Koneva, E. A.
LETTERS ON MATERIALS-PIS MA O MATERIALAKH, 2018, 8 (02): : 135 - 139
[50] Structure of solid solutions of Fe2O3 in Mn3O4
Verwey, EJW
van Bruggen, MG
ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 1935, 92 (1/2): : 136 - 138

← 1 2 3 4 5 →