Rectorite is a 1:1 regular interlayer mineral composed of dioctahedral mica and dioctahedral smectite, which is classified as aluminosilicate minerals. As a low-cost natural clay mineral, rectorite has a large specific surface area and can provide active sites for the PMS activation (Zhao et al., 2013). Rectorite has excellent cation exchange ...
This investigation reports the synthesis and evaluation of a novel and improved diatomite modified with Fe–Mn binary oxide (DT-FeMn) Fenton catalysis for photochemical reactions in aqueous media. The catalyst was prepared by a co-precipitation process and found to be highly efficient for the photocatalytic degradation Rhodamine B (RhB). In comparison with …
A novel kind of g-C3N4/rectorite composite with high visible-light photoactivity was developed via a mild and cost effective two-step process.
Rectorite (REC) is a rare variety of clay minerals with a 2:1 layer structure. It is a regularly interstratified clay mineral of the dioctahedral mica layer and dioctahedral montmorillonite layer in a 1:1 ratio. ... Hydrated lanthanum oxide-modified diatomite as highly efficient adsorbent for low-concentration phosphate removal from secondary ...
Highly ordered and hexagonal mesoporous silica materials containing aluminum were successfully synthesized from natural rectorite mineral via a novel strategy. Silicon and aluminum sources were obtained from rectorite mineral by a pretreatment method involving acid leaching, alkali leaching and strongly acidic cation exchange resins (SACERs) treating, …
Recurrent reports of analyses of X-ray diffraction data from regularly alternating and nearly regularly alternating structures like rectorite provide opportunity for a descriptive …
Renewable and alternative materials as a source of silica and alumina, such as rice husk [160], kaolin [161], rectorite [24], diatomite [162], and fly ash, among others, are used in hierarchical ...
Rectorite and the Rectorite-Like Layer Structures - Volume 18 Issue 2 ... Pyrophyllite-bearing clay in Clinton deposit, Utah County, Utah: Utah Geol. and Min. Survey, Special Studies, no. 23, 28 pp.Google Scholar. Hendricks, S. B. and Teller, E. (1942) X-ray interference in partially ordered layer lattices. J. Chem.
Many other natural minerals such as bentonite (Torkashvand and Bagheri-Mohagheghi 2020), natural clay (Zhang et al. 2015), diatomite (Yu et al. 2014), natural Equisetum ramosissimum (Liu and Kuok ...
Clay-only films were prepared by casting aqueous dispersions of exfoliated neat and ion-exchanged rectorite clay through self-assembly during slow evaporation. The clay …
Removal of EtBr was also tested using diatomite whose cavities were inserted with carbon nanotubes and the EtBr removal capacity varied from 2.8 μmol/g for raw diatomite to 0.3 mmol/g for the modified ... the significant uptake indicated by high Et + removal capacity and fast removal rate by rectorite suggested that clay minerals, especially ...
Clay also enhances the reusable efficiency of TiO 2 by making it separable from the reaction mixture. Clay minerals such as montmorillonite (Mt), bentonite, kunipia, kaolinite, smectite, rectorite, hectorite, laponite, palygorskite, halloysite, attapulgite, diatomite and layered double hydroxides (LDH) have been utilized as TiO 2 supports.
Clay minerals, as abundant natural resources, are among the most suitable supporting materials for nano metal.In this manuscript, new Fe 3 O 4 nanoparticle/rectorite (Fe 3 O 4 /rectorite) catalysts are developed via in-situ precipitation oxidation reaction. Various physicochemical characterizations of Fe 3 O 4 /rectorite show that Fe 3 O 4 nanoparticles …
Rectorite, previously known as allevardite, is a clay mineral with a structure consisting of a regular interleaving of dioctahedral mica and dioctahedral smectite layers.
Processed diatomite/MCM-41 composite Cr(VI) 70.9 [15] Diatomite-supported magnetite nanoparticles Cr(VI) 69.2 [16] Tannin-immobilized activated clay Cr(VI) 24.1 [17] Modiied natural zeolites Cr(VI ...
Clay minerals, as abundant natural resources, are among the most suitable supporting materials for nano metal. ... In our previous research, diatomite and bentonite, rectorite, and palygorskite ...
16.2.2 Diatomite Raw Material. Diatomite (SiO 2.nH 2 O) also known as diatomaceous earth is a soft, light-color slightly sedimentary rock formed from accumulation of siliceous crusts of diatoms, characterized by wide variety of shape and sized diatoms, typically from 10 to 200 μm and high porosity up to 80% (Tian et al. 2016).Diatomite is generally …
Recently, natural aluminosilicate minerals (e.g. kaolinite, rectorite, and diatomite) with abundant reserves in the earth had been explored as low-cost starting materials for preparing zeolites by ...
Rectorite is a rare layered silicate clay mineral with special structure. It is a 1:1 regular interlayer clay mineral of dioctahedral mica and dioctahedral montmorillonite. ... limestone, dolomite, carbon black, bentonite, rectorite, diatomite, More than 100 kinds of materials such as barite, gypsum, pumice, etc.
An efficient Fe2O3-pillared rectorite (Fe-R) clay was successfully developed as a heterogeneous catalyst for photo-Fenton degradation of organic contaminants. X-ray diffraction analysis and high-resolution transmission electron microscope analysis clearly showed the existence of the Fe2O3 nanoparticles in the Fe-R catalyst. The catalytic activity of the Fe-R …
chlorite, rectorite, and illite/smectite clay, as well as their applications as ... diatomite HEC-g-PAA/MS Hydroxyethyl cellulose-graft-poly(sodium acrylate)/medicinal stone
As a result, natural clay holds distinct advantage as a raw material for green zeolite production. This paper introduces recent advances in the synthesis of zeolites using natural clays including kaolinite, bentonite, illite, attapulgite, and diatomite. The activations of clays and the synthesis methods of zeolites are discussed, and the future ...
Rectorite (Rec) is an emerging regular clay mineral with a 2D sheet-like morphology, which is found to be abundant in Hubei, the central area of China (Guo et al., …
Natural clay minerals like diatomite (Hu et al. 2018), kaolinite (Huang et al. 2020), illite (Sun et al. 2018a), bentonite (Li et al. 2014), rectorite (Sun et al. 2018b), hectorite (You et al ...
Natural clay is a silica-aluminate mineral formed by the weathering or rock-formation action of the earth and has been utilized by humans for thousands of years. ... the ZSM-5 zeolite was found to be divided into three stages: (1) Induction period (0-4 h): The gradual dissolution of diatomite and SMS-activated rectorite led to the formation of ...
The rehydration and rehydroxylation properties of homoionic rectorites (saturated with Ca 2+, Mg 2+, Na +, or K +) were further investigated.The rehydration properties of the rectorite were characterized as follows: (1) basal spacings of rehydrated materials after heating above 500°C changed to 22.5 Å for H 2 O-complexes, 26.85 Å for ethylene glycol-complexes, …
In this study, a low-cost, eco-friendly, and high-performance composite, with highly dispersed lanthanum compounds (lanthanum oxynitrate and lanthanum oxycarbonate) on the …
The rehydration and rehydroxylation properties of homoionic rectorites (saturated with Ca2+, Mg2+, Na+, or K+) were further investigated. The rehydration properties of the rectorite were characterized as follows: (1) basal spacings of rehydrated materials after heating above 500°C changed to 22.5 Å for H2O-complexes, 26.85 Å for ethylene glycol-complexes, and 27.65 Å for …
Occurrence: In some low-temperature hydrothermal argillic alteration zones, along veins and pervasively replacing potassic feldspar. In altered bentonites; may develop from muscovite …
Rectorite (REC) [4], [5] is a kind of clay mineral with structure and characteristics much like those of montmorillonite (MMT). It is a sort of regularly interstratified clay mineral with alternate pairs of dioctahedral mica-like layer (non-expansible) and dioctahedral smectite-like layer (expansible) at ratio of 1:1 in a unit cell.
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