نتایج جستجو برای: smectites
تعداد نتایج: 240 فیلتر نتایج به سال:
In this study, we focused on the presentation of clay minerals, their conditions formation and different categories. We also reported importance purification in removing impurities responses induced by heat treatment these minerals. Techniques used to detect minerals are exposed. On other hand, mineralogical, physicochemical thermal properties have a direct impact field use These differ from on...
The Mars Science Laboratory (MSL) rover Curiosity has documented a section of fluvio-lacustrine strata at Yellowknife Bay (YKB), an embayment on the floor of Gale crater, approximately 500 m east of the Bradbury landing site. X-ray diffraction (XRD) data and evolved gas analysis (EGA) data from the CheMin and SAM instruments show that two powdered mudstone samples (named John Klein and Cumberla...
Mineral carbonation of alkaline mine residues is a carbon dioxide removal (CDR) strategy that can be employed by the mining industry. Here, we describe mineralogy and reactivity processed kimberlites kimberlite ore from Venetia (South Africa) Gahcho Kué (Canada) diamond mines, which are smectite-rich (2.3–44.1 wt.%). Whereas, serpentines, olivines, hydrotalcites brucite have been traditionally ...
-The effect of layer charge and of the interlayer cations of smectites on the hydrolysis of azinphosmethyl (0,0-dimethyl S-((4-oxo-1,2,3-benzotriazine-3(4H)-yl)methyl) phosphorodithioate) in an aqueous medium was investigated. Ultraviolet spectroscopy was used for monitoring the hydrolysis process. Hydrolysis of the pesticide is catalyzed by Ca-hectorite (layer charge 0.216) but is not catalyze...
The understanding of the structural formula smectite minerals is basic to predicting their physicochemical properties, which depend on location cation substitutions within 2:1 layer. This implies knowing correct distribution and positions cations, allows assigning source layer charge tetrahedral or octahedral sheet, determining total number cations and, consequently, type smectite. However, som...
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