scholarly journals FACING AND DECORATIVE MATERIALS BASED ON GLASS DOMESTIC WASTE

2019 ◽  
pp. 79-85
Author(s):  
Н. Бондаренко ◽  
N. Bondarenko ◽  
Д. Бондаренко ◽  
D. Bondarenko ◽  
М. Бондаренко ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Water Glass ◽  
Liquid Glass ◽  
Building Materials ◽  
Glass Powder ◽  
Innovative Technology ◽  
Domestic Waste ◽  
X Ray ◽  
Decorative Material

The areas of use of glass domestic waste in the building materials industry are considered. The possibility of obtaining a facing and decorative material-smalt based on colored container and high-quality glass is considered. An innovative technology has been developed for the production of smalt based on finely ground powders of colored container glass using 20%, 40% and 60% liquid glass as a humidifier. The dependences of the influence of various concentrations of aqueous solutions of liquid glass on the degree of compaction of smalt are established. It is shown that the addition of aqueous solutions of liquid glass to the glass powder before pressing reduces the firing temperature from 775 to 725 ° C. the influence of different concentrations of aqueous solution of liquid glass in the initial charges on the chemical composition of the smalt is investigated. The elemental composition of smalt is studied using the x-ray fluorescence method. The microstructure of smalt made from a mixture with an optimum content of 40% aqueous solution of water glass is investigated. The effect of various concentrations of liquid glass on the microhardness of smalt is provided. It is shown that when the content of 40% liquid glass in an aqueous solution, the microhardness reaches maximum values.

Coordination compounds of norbornadiene with silver tetrafluoroborate

1968 ◽  
Vol 46 (2) ◽  
pp. 117-124 ◽  
Author(s):  
Harold W. Quinn
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Infrared Spectra ◽  
Coordination Compounds ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hydrated Complexes ◽  
Crystalline Complexes Of

Crystalline complexes of norbornadiene with silver tetrafluoroborate have been obtained both from anhydrous and aqueous solution. While both solutions yield complexes of stoichiometry AgBF4•C7H8 and 2AgBF4•3C7H8, those from the aqueous solutions also contain water of crystallization. The infrared spectra show that norbornadiene is similarly complexed in both the anhydrous and hydrated complexes but that the coordination in the 1:1 complex is different from that in the 2:3 complex. The anhydrous and hydrated 1:1 complexes have the same X-ray diffraction powder patterns while those of 2:3 complexes are different.

Spectroscopy as a tool to detect multinuclear Cu(ii)–triethanolamine complexes in aqueous solution

2018 ◽  
Vol 47 (11) ◽  
pp. 3755-3763 ◽  
Author(s):  
Petra Lommens ◽  
Pieter Tack ◽  
Luce Vander Elst ◽  
Isabel Van Driessche ◽  
Laszlo Vincze ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Fine Structure ◽  
Aqueous Solutions ◽  
Nmr Relaxation ◽  
Relaxation Dispersion ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

The Evans method, Extended X-ray Absorption Fine Structure (EXAFS) and NMR relaxation dispersion (NMRD) spectroscopy were used to prove the existence of multimeric Cu(ii)–triethanolamine species in aqueous solutions.

The formation of rhodochrosite–smithsonite (MnCO3–ZnCO3) solid-solutions at 5°C

1995 ◽  
Vol 59 (396) ◽  
pp. 481-488 ◽  
Author(s):  
Michael E. Böttcher
Keyword(s):  
Aqueous Solution ◽  
Infrared Spectroscopy ◽  
Aqueous Solutions ◽  
Crystal Lattice ◽  
Powder Diffraction ◽  
Solid Solutions ◽  
Solubility Product ◽  
Experimental Conditions ◽  
X Ray ◽  
Bicarbonate Solutions

AbstractMnxZn(1−x)CO3 solid-solutions were prepared at 5°C by precipitation from metal-bearing bicarbonate solutions. The solids were identified by X-ray powder diffraction and infrared spectroscopy. Zn2+ ions substitute extensively for Mn2+ ions in the crystal lattice of anhydrous rhombohedral carbonates. Throughout the 24 h during which the experiments were conducted, the aqueous solutions remained undersaturated with respect to pure oxides, sulphates, hydroxides and hydroxysulphates. The solutions, however, were supersaturated with MnxZn(1−x)CO3 of any given composition. Besides the anhydrous rhombohedral carbonates, Zn4(OH)2(CO3)3·4H2O was precipitated from an aqueous solution with initially high Zn2+ concentration. The negative logarithm of the solubility product of Zn4(OH)2(CO3)3·4H2O was estimated theoretically to be 43.9 (25°C). Remaining saturation with respect to Zn4(OH)2(CO3)3·4H2O was calculated accordingly. The suggestion is made that hydrated zinc hydroxycarbonate is metastable under the experimental conditions used here, but that it should transform into anhydrous carbonates.

Mixture of the Reaction Products during Hardening of the Water Glass Radiation-Protective Composites

2013 ◽  
Vol 746 ◽  
pp. 289-292 ◽  
Author(s):  
Evgeniy Valerjevich Korolev ◽  
Anna Nikolaevna Grishina
Keyword(s):  
Chemical Composition ◽  
Phase Analysis ◽  
Chemical Reactions ◽  
Water Glass ◽  
Building Materials ◽  
Water Resistance ◽  
Barium Chloride ◽  
Reaction Products ◽  
X Ray

The water glass can be used as a binder for the design of water-resistant radiation-protective building materials. In the present work the possibility of hardening of such materials by barium chloride is investigated. The chemical reactions which can take place during the structure forming and lead to the formation of barium hydrosilicates are presented. It is shown by means of X-ray phase analysis that formation of such hydrosilicates of composition BaO·SiO2·6Н2О, BaO·2SiO2·4Н2О, Ba2[SiO2(OH)2]2and BaO·SiO2·Н2О actually occurs. The influence of the quantity of hardener to the chemical composition of the reaction products is examined. The effect of the reaction products to the water resistance of composite is studied. It is shown that water resistance can be increased in case of stochiometric quantity of barium chloride; in such case the primary product of reaction is BaO·2SiO2·4Н2О.

X-ray absorption spectroscopy of aqueous solutions in the X-ray energy region from 1800 to 3700 eV

2009 ◽  
Vol 87 (5) ◽  
pp. 601-611 ◽  
Author(s):  
Astrid Jürgensen
Keyword(s):  
Aqueous Solution ◽  
Detection Limit ◽  
Aqueous Solutions ◽  
Ion Concentration ◽  
Double Crystal ◽  
X Ray ◽  
Double Crystal Monochromator ◽  
Liquid Cell ◽  
Window Material ◽  
X Ray Absorption

A methodology for the X-ray XANES and EXAFS analyses of aqueous solutions was developed for the Double Crystal Monochromator (DCM) beamline of the Canadian Synchrotron Radiation Facility (CSRF). The technique is based on the implementation of a liquid cell, which is compatible with the standard solid-state sample holding mechanism used at the beamlines of CSRF and the Canadian Light Source (CLS). Aluminized Mylar film with a thickness of 5 μm has been thoroughly investigated for use as a window material for the cell, and found acceptable for the collection of the S, Cl, and K K-edge spectra of ions in aqueous solution, but not for P K-edge or Rb L2,3-edge spectra. Some of the limitations of this methodology, such as diffusion of the solution through the window and the detection limit at low ion concentration, are investigated and discussed.

A spectroscopic study of solvent effects on the formation of Cu(II)-chloride complexes in aqueous solution

2021 ◽  
Author(s):  
ning zhang ◽  
Jianfeng Tang ◽  
Yuntian Ma ◽  
Minghui Liang ◽  
Dewen Zeng ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Spectroscopic Study ◽  
Solvent Effects ◽  
Chloride Complexes ◽  
Concentrated Aqueous Solutions ◽  
X Ray ◽  
X Ray Absorption

A combination of electronic (UV-Vis) and X-ray absorption (EXAFS, XANES) spectroscopies has been used to investigate the formation of copper(II)/chloride complexes in concentrated aqueous solutions. It is established that lowering...

The Structure of Zinc Chloride Complexes in Aqueous Solution

1996 ◽  
Vol 51 (1-2) ◽  
pp. 63-70 ◽  
Author(s):  
M. Maeda ◽  
T. Ito ◽  
M. Hori ◽  
G. Johansson
Keyword(s):  
Aqueous Solution ◽  
Water Molecule ◽  
Aqueous Solutions ◽  
Zinc Chloride ◽  
Large Angle ◽  
Chloro Complex ◽  
Chloride Complexes ◽  
X Ray ◽  
Raman Spectroscopic ◽  
X Ray Scattering

Abstract The structure of zinc chloride complexes with different ratios of chloride to zinc, formed in concentrated ZnCl2 aqueous solutions, were determined from large-angle X-ray scattering using concentrations of the chloride complexes estimated by complementary Raman spectroscopic measurements. The highest chloro complex, [ZnCl4]2-, is tetrahedral with a Zn-Cl bond length of 2.294(4) Å. The trichloro complex, [ZnCl3]-, which coordinates one water molecule, is pyramidal with the Cl-Zn-Cl angle 111°. The Zn-Cl and the Zn-H2O bonds are 2.282(4) and 1.9 Å, respectively. The two lower complexes, [ZnCl2] and [ZnCl]+ , cannot be separated by Raman spectra. The average Zn-Cl distance in these complexes is 2.24 Å, and the average Zn-H2O distance is 1.9 Å. In [Zn(H2O)6]2+ the Zn-H2O distance is 2.15 Å.

Ultrafast X-ray measurements of the glass-like, high-frequency stiffness of aqueous solutions

2017 ◽  
Vol 19 (31) ◽  
pp. 21095-21100 ◽  
Author(s):  
Yishuo Jiao ◽  
Bernhard Adams ◽  
Christoph Rose-Petruck
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Absorption Spectroscopy ◽  
High Frequency ◽  
Ultrafast Dynamics ◽  
Molecular Motions ◽  
X Ray ◽  
X Ray Absorption ◽  
Hydrogen Bonded

The ultrafast dynamics of the domains surrounding solutes in aqueous solution were measured using laser-generating GHz phonons in 30 mM ferrocyanide solutions and the resulting molecular motions of the solutes and their hydrogen-bonded solvation shells were detected using ultrafast X-ray absorption spectroscopy (UXAS).

scholarly journals Evaluation of Mechanical Properties and Microscopic Structure of Coal Gangue after Aqueous Solution Treatment

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3207 ◽  
Author(s):  
Yan Zhang ◽  
Xiaoyun Yang ◽  
Susan Tighe
Keyword(s):  
Mechanical Properties ◽  
Aqueous Solution ◽  
Building Materials ◽  
Water Environment ◽  
Solution Treatment ◽  
Coal Gangue ◽  
Engineering Properties ◽  
Coal Waste ◽  
Microscopic Structure ◽  
X Ray

Coal gangue, a solid waste produced in coal production, had caused serious environmental pollution due to accumulation on dumps. Embankment filling can solve the problem while significantly consuming the amount of coal waste for mining. The main purpose of this study is to investigate the mechanical properties and microscopic structure of coal gangue when it is subjected to erosion from water environment with different acidity. Using immersion testing to evaluate its stability in different hydro-chemical environments. Mechanical property parameters of coal gangue treated by solutions were investigated. The action microstructure of coal gangue was revealed through a series of X-ray diffraction (XRD), X-ray fluorescence spectrometry (XRF), scanning electron microscopy (SEM), and energy dispersive spectrometry (EDS). The results show that acidic solution behaved better improvement effect on compressive modulus and fraction of coal gangue samples owing to the generation of quartz and the reduction of aluminum, dissolving of some substances, and transforming of small scattered angular grains through soaking treatment. Alkalinity treatment can be chosen to improve cohesion of coal gangue as a result of polymeric silicon aluminum salt, with high viscosity, was produced by chemical reaction during immersion. Therefore, aqueous solution treatment contributes to engineering properties and presents great potential in both supplement road building materials and recycling of coal gangue.

Sign in / Sign up

Export Citation Format

Share Document