Studies of the rate of the formation of talc under hydrothermal conditions at 400-460.DEG.C.

スポンサーリンク

概要

• 論文の詳細を見る

• The rate of the formation of talc from brucite powders with soluble silica under hydrothermal conditions was investigated in the temperature range of 400–460 °C, a range including the equilibrium temperature for the reaction: brucite+serpentine\rightleftarrows2 forsterite+3H<SUB>2</SUB>O. Serpentine appeared as an intermediate phase below 415 °C, while above 430 °C forsterite appeared in addition to serpentine. The apparent reaction can be represented as:<BR>(<U>Remark: Graphics omitted.</U>)<BR>The reaction was apparently expressed as a pseudo-first-order reaction. The overall rate of the reaction did not increase with the increase in the temperature. Arrhenius plots of the rate constants for the overall reaction showed a curve with a maximum at about 415 °C and a minimum at about 445 °C which was caused by the alteration of the reaction by the appearance of forsterite at 430 °C.

• 公益社団法人 日本化学会の論文

著者

• Muraishi Haruto

  Department Of Chemistry Kyushu Sangyo University

関連論文

• Experimental Study of Amorphous Silica Crystallization in Na_2CO_3-NaHCO_3 Solutions as a Source of Chert Formation in Lake Magadi
• The thermal and hydrothermal behavior of silica-adsorbed magnesium hydroxide.
• Studies of the rate of the formation of talc under hydrothermal conditions at 400-460.DEG.C.
• The reaction of magnesium hydroxide with soluble silica under hydrothermal conditions below the critical temperature.

スポンサーリンク