海泡石和山软木在构造上都含有四种水,除了附着水和构造水(OH)之外,还比其他黏土矿物多了配位水OH2,这是指和镁离子结合的水,以及像沸石所含在管道中的沸石水,故有本目上列所示的构造式。其他和真正叶状硅酸盐矿物不同的地方,在XRD图上,没有出现(001)的底面反射峰,其中最强峰是d(110),在12.0 Å左右,这是...
A reference sample of sepiolite and products of its comminution by vibrating dry-milling have been studied using X-ray diffraction (XRD) line-broadening analysis, complementary field emission scanning electron microscopy (FESEM) images and surface area measurements. The apparent crystallite sizes ...
Infrared spectroscopy showed that the sorption of nitric oxides and ammonia does not destroy the crystal lattice of sepiolite, which was confirmed by XRD-analysis. Sorption of both nitric oxides and ammonia occurred by zeolitic water inside the structural channels of sepiolite. Pressure swing ...
XRD, SEM and FTIR measurements support the suggestion that high oil loadings on sepiolite indicated adsorption mainly on external surfaces as multilayers accompanied by desorption of water. The adsorption of hydraulic oil spilled on a road pavement by a variety of mineral sorbents was studied. As ...
A modified sepiolite was prepared with magnetite by chemical co-precipitation, and the magnetite/sepiolite (M/SEP) composite was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM) and X-...
The textural characterization was made by mercury intrusion porosimetry (MIP), nitrogen adsorption/desorption (BET), and X-ray diffraction (XRD). The mechanical resistance, dimensional changes and weight losses at each stage of heat treatment were also determined. The thermal expansion coefficients (...
Upper Cretaceous-Tertiary marine clayey-calcareous rocks of the Hekimhan basin contain fibrous clay minerals in significant amounts. Ophiolitic rocks in the provenance area have contributed the elements to form the clay minerals. XRD, SEM, major, trace and REE analyses were applied to samples taken...
The temperature-microstructure evolution and the properties of porous sepiolite ceramics were investigated by thermo gravimetric and differential thermal analyses (TG-DTA), X-ray diffraction (XRD), bending strength, compressive strength, scanning electron microscopy (SEM) and mercury intrusion porosimeter...
Figure1shows the XRD patterns of the catalysts obtained from sepiolite, comparing them with that of natural sepiolite. In the S diffractogram, the structure of the natural sepiolite is identified with its maximum reflections at 8.47º, 20.07º, 28.64º, 34.99º and 38.64º. This...
The XRD data indicate that smectite, palygorskite and sepiolite are the prevalent clay minerals in the selected samples. In this clay mineral association, ... M Felhi,A Tlili,M Montacer - 《Resource Geology》 被引量: 20发表: 2008年 Particulate urea with clay incorporated for hardness and/or...