Showing papers in "Applied Clay Science in 2013"

TL;DR: In this article, various properties were measured on 6 different halloysites from different geographical and geological environments from Australia, New Zealand and the USA, and inferences were drawn on their comparative suitability for new uses, including identification of impurities by X-ray diffraction (XRD), morphology, surface area and pore volume by electron microscopy and nitrogen absorption, and measurement of zeta potential over a wide range of pH.

TL;DR: In this paper, a review summarizes adsorption of proteins and nucleic acids (DNA, RNA) on natural clay minerals of layer phyllosilicates such as montmorillonite, kaolinite and illite and their interactions.

TL;DR: A brief overview of recent trends in scientific research and development of clay minerals can be found in this article, where the compilation of papers for this special issue to pay tribute to the 34th International Geological Congress held in 2012.

TL;DR: In this article, the effects of various parameters such as initial MB concentration, contact time, adsorbent concentration, stirring speed, solution pH and salt concentration were examined and optimal experimental conditions were determined.

TL;DR: In this paper, the authors presented an approach to stabilize the drilling fluid rheology in HPHT conditions by making use of nanoparticles, which is able to retain the properties over a wide range of operating temperatures and pressure, thus ensuring efficient operation in versatile formations and operating conditions.

TL;DR: In this article, halloysite (Hal) nanotubes compounded with polylactide (PLA) via melt mixing formed biodegradable and biocompatible clay polymer nanocomposites (CPN).

TL;DR: In this article, the porosity of Opalinus clay facies was measured using the BIB-SEM method with a power law distribution with an exponent of 2.4.

TL;DR: In this paper, the adsorption-desorption behavior of nitrate on Mg-Al layered double hydroxide (4:1) was compared with that of phosphate and sulfate as two common anions in soil solution.

TL;DR: In this paper, the influence of adsorbed water and the interlayer distance of the clay minerals on CH4 adsorption was explored by using heated Mt products with different interlayer distances as the adsorbent.

TL;DR: In this article, the authors investigated the behavior of lime and cement stabilized organic soils and found that there is a drastic increase in unconfined compressive strength (UCS) of lime-and cement-treated specimens until 28 days of curing.

TL;DR: In this paper, a study on the thermal behavior of metakaolin based geopolymers that have been foamed and reinforced in order to assess their suitability for high temperature applications such as thermal barriers and fire resistant panels is presented.

TL;DR: A glossary in English, the idiom worldwide used for science communication, prepared by an ad hoc Working Group constituted by the authors of the present paper is herewith proposed.

TL;DR: In this article, in situ silylation of non-swelling clay mineral surfaces has attracted much attention because silylated products exhibit properties suitable for many applications in materials science and environmental engineering.

TL;DR: In this paper, the complete parameters of montmorillonite solid acidity, namely amount, strength, and types of acidity were determined and the properties of the acid sites after heating were proposed by combining the temperature-programmed desorption (TPD) and Fourier transform infrared spectroscopy (FTIR) based on the NH3 adsorption system.

TL;DR: In this article, the physical, chemical and mechanical characteristics of metakaolins obtained from an industrial flash calciner, in order to compare their properties with standard industrial metakaolin produced in a rotary kiln calciner.

TL;DR: In this paper, an adsorption study of nalidixic acid (NA), a quinolone antibiotic, on montmorillonite (SAz-1) and kaolinite (KGa-1b), two important components of soils, was conducted under different pH and initial concentration conditions.

TL;DR: In this paper, a hybrid organic-inorganic materials were prepared through an innovative synthetic approach based on a co-reticulation in mild conditions of epoxy based organic resins and an MK-based geopolymer inorganic matrix.

TL;DR: In this paper, cetyltrimethylammonium chloride (CTMACl) was intercalated into the interlayer space of methoxy-modified kaolinite, which resulted in the delamination and rolling of the initial particles.

TL;DR: In this paper, three commercial powdered metakaolins were analyzed in order to determine their chemical and mineralogical compositions, other than physical characteristics such as grain size distribution and specific surface area (SSA).

TL;DR: In this paper, the results show that ladle slags are activated by alkaline solutions and participate in gels formation, and an optimization in terms of ladle sag content and the coexistence of different types of gels (3D aluminosilicate, C-S-H and Ca-rich aluminosailicate) have been envisaged.

TL;DR: In this article, the effect of monovalent and divalent anions, such as sulphate and nitrate, on heavy metal immobilisation in ferronickel slag geopolymers was investigated.

TL;DR: In this paper, the silylation of sodium montmorillonite (Na + -Mt, Nanofil 757®) was performed using (3-aminopropyl)triethoxy silane (APTES).

TL;DR: In this paper, a detailed study is presented based on the scanning electron microscopy (SEM), field emission scanning electron microscope (FEG) and transmission electron microscope (TEM) observations of the microtextural features of a wide range of deposits of extremely pure Sep and Pal from all over the world.

TL;DR: The physicochemical aspects of four soft kaolins were investigated using X-ray diffraction (XRD), scanning electronic microscopy (SEM), transmission electron microscopy, Fourier transformation infrared spectroscopy (FTIR), differential scanning calorimetry-thermogravimetry (DSC-TG) specific surface area and surface zeta potential measurements as mentioned in this paper.

TL;DR: In this paper, the authors used the Avrami method on the basis of sample mass loss and changes in the intensities of X-ray powder diffraction and FTIR-ATR peaks under isothermal conditions.

TL;DR: In this paper, the intrinsic nano-micro-porosity of the geopolymer was studied and the in situ foaming was strongly dependent on the water content of the precursors and the subsequent process of water elimination.

TL;DR: In this article, the authors investigated the influence of silica fume-scrap tire rubber fiber mixture inclusion on the geotechnical properties of clayey soils and concluded that the materials can be successfully used for the modifications of clay-ey soils in the geo-technical applications.

TL;DR: In this paper, the performance of purified diatomite was evaluated by scanning electron microscopy, energy dispersive X-ray analysis and Brunauer-Emmett-Teller adsorption.

TL;DR: In this article, the synthesis and mechanical properties of new inorganic polymer (geopolymer) composites unidirectionally reinforced with 4-10% natural cellulose-based fibres (NZ flax, phormium tenax) were reported.

TL;DR: In this article, the suitability of red, white and ball clays for the use as prime materials in the production of alkaline cements was assessed using selective chemical attack and subsequent ICP analysis of resulting leachate to determine their reactive SiO2/Al2O3 ratios.