Smectites, more commonly called bentonite, are candidate as buffer and backfill materials to fill the space around high-level radioactive waste in deep geological repositories. Smectites also serve as additive in paints or as thickening agent for various preparations. ^ CNRLT (2012).

smectite是大类，montmorillonite是其中一类. smectite来源于smectos，类似soap的意思. 下有montmorillonite, hectorite, beidellite, saponite, nontronite, sauconite几类. 其中montmorillonite是主要一类. 都在bentonite（膨润土）这类土壤中富含

2023年5月1日 · Smectite minerals are a group of phyllosilicate minerals that are characterized by a layered structure and the ability to swell when exposed to water. The mineral group includes a variety of species, including montmorillonite, nontronite, saponite, and hectorite.

Smectite and vermiculite minerals are often referred to as "swelling" or "expandable" clay minerals. Smectite is commonly a primary constituent of bentonite (see bentonite for respective genesis information) and pelitic sediments (e.g., shales) and occurs in soils.

2013年1月1日 · Smectites are widespread in soils, sediments, and rocks and have a strong influence on their physical and chemical properties. Smectites are also the most miscellaneous group of 2:1 clay minerals. Chemical and structural heterogeneity is typical for smectites, and both composition and structure are permanently subject to change (Drits, 2003).

Smectite crystals are phyllosilicates with a 2:1 structure composed by stacking several layers of one octahedral sheet between two tetrahedral ones.

The physicochemical properties of smectite clay minerals that determine their industrial utilization are reviewed. Smectite is the name used for a group of phyllosilicate mineral species, the most important of which are montmorillonite, beidellite, nontronite, saponite and hectorite.

2013年1月1日 · Smectite, also known as “swelling clay”, is a diverse group of clay minerals with a 2:1 layer silicate structure that can expand and contract upon wetting and drying. All 2:1 layer silicates (which also include illite/mica, chlorite, and vermiculite groups) have 2 tetrahedral sheets surrounding a central octahedral sheet.

Smectites (came from the Greek word smectos, meaning soap), also called swelling clays are expansive hydroxyl aluminosilicates (mainly Na +, Ca +2, Mg +2, Fe +3 &Li +) containing 2:1 layer clay mineral. These minerals are three-layered composed of two tetrahedral layers of silica surrounding a single Aluminum octahedral layer.

…clay minerals belonging to the smectite group, which are hydrous aluminum silicates containing iron and magnesium as well as either sodium or calcium. Two types of bentonite are recognized, and the uses of each depend on specific physical properties. Read More; structure and …