Obtaining and Trademark of Copper Molybdenum Oxide from the CuMoO4 Sample Using Carbon as a Reducing Agent

2015 ◽  
Vol 1105 ◽  
pp. 154-158
Author(s):  
Akbota B. Alkenova ◽  
Aristotel Z. Isagulov ◽  
K. Zhumashev ◽  
Alain Hazotte
Keyword(s):  
Activation Energy ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Chemical Interaction ◽  
Temperature Synthesis ◽  
Phase Synthesis ◽  
Interaction Processes ◽  
Dta Curve ◽  
Energy Quantity ◽  
Energy Activation

This article discusses the calculation of the apparent activation energy (CuMoO4 + C) on the DTA curve, to study and optimize the time-temperature synthesis mode, in particular the activation energy. Activation energy allows us to investigate the elementary act of chemical interaction. Thus, we propose to use this method to calculate Eact interaction processes (CuMoO4 + C) in the solid phase synthesis occurring during the reinforcement. The research results are checked by thermodynamic calculations. The results obtained allow us to trace the energy quantity expended to start the reaction.

scholarly journals Decorative coatings based on the processing of fine waste crushing concrete scrap

2018 ◽  
Vol 196 ◽  
pp. 04048
Author(s):  
Evgeniya Tkach ◽  
Kanapiya Nurbaturov ◽  
Askar Kulibayev
Keyword(s):  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Chemical Interaction ◽  
Drop Out ◽  
Phase Synthesis ◽  
New Compounds ◽  
Kinetics Of ◽  
Degree Of Filling ◽  
Indications For Use ◽  
Rational Range

Experiments were carried out to determine the rational range of the proportion of fillers from sand and the dropout of crushing concrete scrap as a replacement part of the cement to obtain colloidal cement glue and to assess the effect of fillers of different specific surface area and the degree of filling on the kinetics of the set of strength of the hardened stone. It is established that the composition of the concrete scrap crushing drop-out contains about 30% of non-hydrated Portland cement, which deter-mines its use as an active micro-filler in the production of fine cement sys-tems. According to its chemical composition, the elimination of crushing of concrete scrap from heavy concrete is presented in the form of com-pounds of oxide groups, which, as a result of the interaction, provide the process of solid-phase synthesis of new compounds and are not able to en-ter into chemical interaction with pigments, the color of which is deter-mined by the type and content of iron oxides, and therefore has no contra-indications for use in decorative thin-milled cement systems.

scholarly journals Synthesis and study of the electrical conductive properties of Cs2Fe2TiO16 in various gas atmospheres

2021 ◽  
Vol 2103 (1) ◽  
pp. 012193
Author(s):  
D A Rogova ◽  
O Yu Sinel’shchikova ◽  
N V Besprozvannykh ◽  
N A Morozov
Keyword(s):  
Activation Energy ◽  
Electrical Conductivity ◽  
Impedance Spectroscopy ◽  
Grain Boundary ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Type Structure ◽  
Total Resistance ◽  
Phase Synthesis ◽  
Conductive Properties

Abstract In this work, titanate Cs2Fe2Ti6O16 with a hollandite-type structure was synthesized by solid-phase synthesis. The electrical conductivity of the obtained ceramics was investigated in the temperature range from 25 to 800 °C in air and in the presence of an argon-hydrogen mixture (3% H2). It was found that the electrical conductivity of the compound under consideration depends on the composition of the atmosphere — the activation energy of conduction changes (0.57 eV in air and 0.91 eV in the presence of hydrogen). The volumetric and grain-boundary contributions to the total resistance of the sample in the gases under consideration are separated by impedance spectroscopy at a temperature of 800 °C.

Synthesis and Screening of A DNA-Encoded Library of Non-Peptidic Macrocycles

2020 ◽  
Author(s):  
Eric Koesema ◽  
Animesh Roy ◽  
Nicholas G. Paciaroni ◽  
Thomas Kodadek
Keyword(s):  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Cell Permeability ◽  
Phase Synthesis ◽  
Protein Ligands ◽  
High Affinity ◽  
Scaffold Diversity

There is considerable interest in the development of libraries of non-peptidic macrocycles as a source of ligands for difficult targets. We report here the solid-phase synthesis of a DNA-encoded library of several hundred thousand thioether-linked macrocycles. The library was designed to be highly diverse with respect to backbone scaffold diversity and to minimize the number of amide N-H bonds, which compromise cell permeability. The utility of the library as a source of protein ligands is demonstrated through the isolation of compounds that bind streptavidin, a model target, with high affinity.

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