Thermodynamics of cation ordering in karrooite (MgTi2O5)

被引：0
|
作者：
Ghiorso, MS
Yang, HX
Hazen, RM
机构：
[1] Univ Washington, Dept Geol Sci, Seattle, WA 98195 USA
[2] Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA
[3] Carnegie Inst Washington, Ctr High Pressure Res, Washington, DC 20015 USA
来源：
AMERICAN MINERALOGIST | 1999年 / 84卷 / 09期
关键词：
D O I：
暂无
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
A thermodynamic model of non-convergent cation-ordering in karrooite (MgTi2O5) has been calibrated from the single-crystal X-ray structure refinements of Yang and Hazen (1998) and from estimates of the dependence of the bulk modulus on ordering state (Hazen and Yang 1997). Derived values of the Gibbs free energy, enthalpy, entropy, and heat capacity of disordering of karrooite are reported as a function of temperature at 1 bar and at elevated pressures.
引用
收藏
页码：1370 / 1374
页数：5
相关论文
共 50 条
  • [41] Near-zero volume-shrinkage in reactive sintering of porous MgTi2O5 with pseudobrookite-type structure
    Nakagoshi, Yuta
    Sato, Jun
    Morimoto, Masahumi
    Suzuki, Yoshikazu
    CERAMICS INTERNATIONAL, 2016, 42 (07) : 9139 - 9144
  • [42] Uniformly porous MgTi2O5 with narrow pore-size distribution: in situ processing, microstructure and thermal expansion behavior
    Suzuki, Yoshikazu
    Morimoto, Masafumi
    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 2010, 118 (1384) : 1212 - 1216
  • [43] Site disorder revealed through Raman spectra from oriented single crystals:: A case study on karooite (MgTi2O5)
    Liermann, Hanns-Peter
    Downs, Robert T.
    Yang, Hexiong
    AMERICAN MINERALOGIST, 2006, 91 (5-6) : 790 - 793
  • [44] MgTiO3/MgTi2O5/TiO2 heterogeneous belt-junctions with high photocatalytic hydrogen production activity
    Ling Meng
    Zhiyu Ren
    Wei Zhou
    Yang Qu
    Guofeng Wang
    Nano Research, 2017, 10 : 295 - 304
  • [45] MgTiO3/MgTi2O5/TiO2 heterogeneous belt-junctions with high photocatalytic hydrogen production activity
    Meng, Ling
    Ren, Zhiyu
    Zhou, Wei
    Qu, Yang
    Wang, Guofeng
    NANO RESEARCH, 2017, 10 (01) : 295 - 304
  • [46] Tentative phase relationships in the system CaHfTi2O7-Gd2TI2O7 with up to 15 mol% additions of Al2TiO5 and MgTi2O5
    Perera, DS
    Stewart, MWA
    Li, HJ
    Day, RA
    Vance, ER
    JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2002, 85 (12) : 2919 - 2924
  • [47] Reaction induced Ni/MgTi2O5 interface promotes the resistance to sintering and oxidation in auto-thermal reforming of acetic acid
    Chen, Qi
    Liao, Fuxia
    Ding, Chenyu
    Hu, Xiaomin
    Xu, Yingchun
    Cheng, Peng
    Zheng, Zhanfeng
    Huang, Lihong
    Wang, Ning
    CATALYSIS TODAY, 2024, 432
  • [48] Ni2+-activated MgTi2O5 with broadband emission beyond 1200 nm for NIR-II light source applications
    Tang, Chuan-Jun
    Liu, Bo-Mei
    Huang, Lin
    Wang, Jing
    Tang, Qiang
    JOURNAL OF MATERIALS CHEMISTRY C, 2022, 10 (48) : 18234 - 18240
  • [49] Porous MgTi2O5/MgTiO3 composites with narrow pore-size distribution: in situ processing and pore structure analysis
    Suzuki, Yoshikazu
    Morimoto, Masafumi
    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 2010, 118 (1381) : 819 - 822
  • [50] STRUCTURE REFINEMENTS OF MG2TIO4, MGTIO3 AND MGTI2O5 BY TIME-OF-FLIGHT NEUTRON POWDER DIFFRACTION
    WECHSLER, BA
    VONDREELE, RB
    ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1989, 45 : 542 - 549
12345