钙矾石表面碳化反应机理研究

STUDY ON MECHANISM OF CARBONATION ON THE SURFACE OF ETTRINGITE

研究了钙矾石表面碳化反应机理，该反应分三步进行，其中水的吸附为控制步骤。钙矾石表面碳化反应对ｐｃｏ＿２，ｐＨ＿２Ｏ均为一级反应，反应的表观活化能为—３９９０７Ｊ·ｍｏｌ￣（－１）。

Mechanism of carbonation on the surface of ettringite was studied. Carbonation is carried out in three stages,in which adsorption of water is a controlling procedure. Carbonation on the surface of ettringite for both pco_2 and pH_O is the first-order stage,and the apparent activated energy is 39907J/mol.