Green production of silica hydroxyl riched palygorskite by shear-assisted supercritical CO2 separation process for dye adsorption and heavy oil viscosity reduction

• Published in: Applied clay science Vol. 212; p. 106207
• Main Authors: Li, Dingyao, Li, Yun, Yang, Fan, Tian, Xiaojuan, Che, Sai, Wang, Yifan, Bao, Weijie, Lv, Guangwei, Xu, Chong, Sun, Yankun, Yan, Xingru, Deng, Bijian, Lu, Yi, Li, Yongfeng
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.10.2021
• Subjects: Adsorption; Palygorskite; Silica hydroxyl; Supercritical CO2; Viscosity reduction; Viscosity reduction; Adsorption; Palygorskite; Supercritical CO2; Silica hydroxyl

A green shear-assisted rapid depressurization process was developed to produce highly-dispersed palygorskite (Pal) nanorods with abundant silica hydroxyl (Si-OH) groups by using supercritical CO2 (ScCO2) treatment. The disentangled Pal (DPal) nanorods prepared by ScCO2 were obtained with small parti...