Mesoporous material Al-MCM-41 from natural halloysite

Facile Preparation of Ammonium Molybdophosphate/Al‐MCM‐41 Composite Material from Natural Clay and Its Use in Cesium Ion Adsorption

“…[21][22][23][24] However, the most significant barrier to the use of natural clays as precursors is the difficult removal of quartz, mica, other dense phases, and unreactive impurities from the clay; these impurities significantly influence the purity of the final products. It is extremely difficult and time consuming to remove all of the impurities from natural clays.…”

Synthesis of SBA-15 encapsulated ammonium molybdophosphate using Qaidam natural clay and its use in cesium ion adsorption

“…[26][27][28] Extensive clay accumulation occurs in low-grade sylvinite ores, such as those mined from salt lakes in Qaidam Basin of Qinghai, northwestern China. The possibility of preparing mesoporous silica from low-cost natural clay minerals has been explored because of similarities between the structural 60 units of the latter and those of mesoporous materials.…”

Direct synthesis of mesoporous aluminosilicate using natural clay from low-grade potash ores of a salt lake in Qinghai, China, and its use in octadecylamine adsorption

“…In particular, the possibility of preparing mesoporous aluminosilicates from low-cost natural aluminosilicate clay minerals has been explored because of similarities between the abundance and structural units of the latter and those of mesoporous materials. Attapulgite (Yang et al, 2010), halloysite (Xie et al, 2014), saponite (Linssen et al, 2002), and volclay (Adjdir et al, 2009) have all shown significant potential use as mesoporous aluminosilicate precursors.…”