Application of nitrogen adsorption - based SSA measurement in characterization of montmorillonite dissolution

作者：Qu, Xiyu^*; Gao, Yuan; Lin, Yongchang; Song, Zhaojun^*

来源：Indian Journal of Marine Sciences, 2018, 47(3): 635-644.

• Nitrogen Adsorption-Based SSA Measurement
• SSA feature
• pore size feature
• dissolution features
• sodium hydroxide solution

For characterizing the alkaline dissolution of montmorillonite, this paper applies Nitrogen Adsorption-Based large specific surface area (SSA) Measurement to measure the changing SSA, pore volume, and pore size, and to draw the adsorption/desorption curve of montmorillonite at different sodium hydroxide concentrations. It also determines the optimal experiment conditions like concentration (0.05mol/L) and charging/reaction time (3h) of sodium hydroxide solution which are suitable for oilfield development. According to the experiment, the dissolution characteristics of montmorillonite reflected by parameters acquired through Nitrogen Adsorption-Based SSA Measurement are consistent with the conclusion drawn from the changing pH value and ion (e.g. Si4+) concentration of the solution before and after the reaction.

• 出版日期2018-3
• 单位中国石油大学（北京）; 山东科技大学