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Kinetics of Dissolution and Crystal Growth of Silicates and Aluminosilicates in Aqueous Solutions at Low Temperatures

Kinetics of Dissolution and Crystal Growth of Silicates and Aluminosilicates in Aqueous Solutions at Low Temperatures
低温水溶液中硅酸盐和铝硅酸盐的溶解和晶体生长动力学
批准号:
9017976
负责人:
Antonio Lasaga
金额:
$17.63万
依托单位:
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1991
资助国家:
美国
项目状态:
已结题
起止时间:
1991-01-01 至 1993-06-30

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中文摘要
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英文摘要
This is a continued study of the experimental determination of the dissolution and precipitation kinetics of silicates and aluminosilicates as functions of pH, temperature and the Gibbs Free Energy of reaction ( G); to examine the surfaces of the reacted minerals using surface analytical techniques (e.g. XPS, AES, STM, AFM) which when combined with rates determined from solution chemistry using flow-through reactors will provide information on surface reaction mechanisms; and to apply the rate data obtained to model low temperature, predominantly meteoric water diagenesis of a Jurassic feldspathic sandstone in the North Sea. Our experimental work is the first to describe both dissolution and precipitation rates of major rock-forming silicates and aluminosilicates as a function of G, as well as the first to measure precipitation rates in phases more complex than quartz. Incorporation of the full rate laws in an accurate two-dimensional hydrodynamic model of fluid flow in porous media should result in the first completely quantitative physical and chemical explanation of diagenesis in a dynamic sedimentary basin.
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Acquisition of a New In Situ Near- Atomic Resolution Hydrothermal System and Automated BET Equipment for Surface Area Analysis
  • 批准号:
    9529258
  • 项目类别:
    Standard Grant
  • 资助金额:
    $15.49万
  • 财政年份:
    1996
  • 负责人:
    Antonio Lasaga
  • 依托单位:
Upgrading of the Computational and Theoretical Facilities in Geochemistry at Yale
  • 批准号:
    9316486
  • 项目类别:
    Standard Grant
  • 资助金额:
    $4.8万
  • 财政年份:
    1994
  • 负责人:
    Antonio Lasaga
  • 依托单位:
Quantum Mechanical Calculations of Potential Surfaces and Applications to Global Change, Mineral Physics and the Kinetic Theory of Petrologic Processes
  • 批准号:
    9316608
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $20.0万
  • 财政年份:
    1994
  • 负责人:
    Antonio Lasaga
  • 依托单位:
Kinetics of Dissolution and Crystal Growth of Silicates and Aluminosilicates in Aqueous Solutions at Low Temperatures
  • 批准号:
    9219770
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $31.87万
  • 财政年份:
    1993
  • 负责人:
    Antonio Lasaga
  • 依托单位:
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