THE PARTICULARITY OF SUPERCRITICAL WATER AND THE CONNOTATION OF STUDY ON DEEP EARTH'S MATERIALS
Received date: 1994-10-02
Online published: 1995-10-01
Water has fascinating properties in its supercritical state where it behaves very differently from water at standard conditions. Supercritical water has many particularities, such as intensive oxidation, extraordinary solvating power, and the density of supercritical water varying between gaslike and liquidlike values by varying its pressure and temperature. Almost all hydrogen bonding of water is broken down at the supercritical temperature of 400℃. This nature of supercritical water is probably the main reason that it has many particularities.Water in mantle not only has an important influence on the nature of geophysical fields, but also has an important connotation on the evolution of geological structure, geochemical dynamics, mineralization, and discussion about the reason of deep geological calamity (earthquake and volcanic eruption). The existence of water and other liquids is likely an important reason which the earth has different evolutionary history from other planets. Therefore, study on the interaction between water and deep Earth's materials becomes an important content of understanding the evolutionary process of the deep Earth and the whole Earth.
Xu Yousheng,Hou Wei,Zheng Haifei,Xie Hongsen . THE PARTICULARITY OF SUPERCRITICAL WATER AND THE CONNOTATION OF STUDY ON DEEP EARTH'S MATERIALS[J]. Advances in Earth Science, 1995 , 10(5) : 445 -449 . DOI: 10.11867/j.issn.1001-8166.1995.05.0445
[1] Todheide K. Ber Bunsenges. Phys Chem,1982,86:1005-1016.
[2] Franck E U. Pure Appl Chem,1970,24:13-30.
[3] Schmidt E. Properties of water and steam in SI Units. 2nd ed. by Grigull U. Spring, Berlin,1979.
[4] Belonoshko A and Saxena S K. A molecular dynamics study of the pressure-volume-temperature properties of super-critical fluids:I. H20. Geochim Cosmochim Acta,1991,55:381-387.
[5] Shaw R W, Brill T B, Clifford A A, Eckert C A and Franck E U. Supercritical Water. Chemistry and Engineer, Special Report,1991.
[6] Brodholt J and Wood B. Molecular dynamics simulations of the properties of CO2-H2O mixtures at high pressures and temperatures. American Mineralogist,1993,78:558-564.
[7] Holland T and Powell R. A Compensated-Redlich-Kwong(CORK) equation for volumes and fugacities of CO2 and H2O in the range 1 bar to 50 kbar and 100-1600℃. Contrib Mineral Petrol,1991,109:265-273.
[8] Postorino P, Tromp R H, Riccl M-A, Soper A K & Nellson G W. The interatomic structure of water at supercritical temperatures. Nature,1993,366:668-670.
[9] Ayers J C and Watson E B.Ruble solubility and mobility in supercritical aqueous fluids. Contrib Mineral Petrol, 1993,114:321-330.
[10] Becker K H, Cemic L and Langer K. E O E. Solubility of corundum in supercritical water. Geochim Cosmochim Acta,1983,47:1573-1578.
[11] Woodland A B and Walther J V. Experimental determination of the solubility of the assemblage paragonite,albite, and quartz in supercritical H2O. Geochim. Cosmochim Acta,1987,51:365-372.
[12] Ryabchikov I D and Boettcher A L. Experimental evidence at high pressure for potassic metasomatism in the mantle of the earth. Am Mineral,1980,65:915-919.
[13] Schneider M E and Eggler D H. Fluids in equilibrium with peridotite minerals: implications for mantle metasomatism. Geochim Cosmochim Acta,1986,50:711-724.
[14] 谢鸿森，侯渭，张月明，徐惠刚，王筑明.超高压含水体系的某些实验结果与水在岩石圈演化中的意义.中国东南海陆岩石圈结构与演化研究.北京:中国科学技术出版社，1992. 218- 227.
[15] Kitahara S and Kennedy G C. The calculated equilibrium curves for some reactions in the system MgO-SiO2-H2O at pressures up to 30 kilobars. Am J Sci,1967,265:211-217.
[16] 郑海飞，谢鸿森，徐有生，张月明，徐惠刚.超临界水—玄武岩反应的初步研究.中国矿物岩石学地球化学研究新进展，兰州大学出版社，1994.
/
| 〈 |
|
〉 |
甘公网安备62010202000687
