Experimental Study of CO_2-Water-Mineral Interactions and Their Influence on the Pore Structure of High Rank Coal

摘要

(1) Under the action of scCO_2-water, carbonate mineral surface is dissolved to form corrosion pits, crystal cones and corrosion gullies, while aluminosilicate minerals are bent and expanded under the action of dissolution, hydration and ion exchange. Local dissolution equilibrium is the main reason for the formation of secondary minerals (illite, aluminosilicate, gypsum, etc.).