Temperature programmed decomposition of sillica-supported MgCl2/THF/TiCl4 catalyst and effect of thermal treatment on ethylene polymerization rate

1997 ◽  
Vol 14 (5) ◽  
pp. 390-393
Author(s):  
Young Soo Ko ◽  
Taek Kyu Han ◽  
Seong Ihl Woo
Keyword(s):  
Thermal Treatment ◽  
Ethylene Polymerization ◽  
Polymerization Rate ◽  
Temperature Programmed ◽  
Temperature Programmed Decomposition

scholarly journals THERMAL DECOMPOSITION OF BARZAS COALS

2021 ◽  
Vol 64 (3) ◽  
pp. 92-99
Author(s):  
Ivan Ya. Petrov ◽  
Boris G. Tryasunov ◽  
Alexander R. Bogomolov ◽  
Konstantin Yu. Ushakov ◽  
Alexander S. Zyabrev
Keyword(s):  
Thermal Decomposition ◽  
Temperature Region ◽  
Adsorbed Water ◽  
Volatile Components ◽  
Coal Pyrolysis ◽  
Helium Atmosphere ◽  
Mineral Components ◽  
Temperature Programmed ◽  
Temperature Programmed Decomposition ◽  
Coal Organic Matter

Thermal decomposition processes of two types of Barzas sapromixites - a tile-like modification (“tile”) and a product of its weathering (“exfoliated tile”) - have been investigated in various media (air and helium). It has been shown that in the course of temperature-programmed decomposition (10 °C/min) of these forms of tile-like Barzas sapromixite, in both oxidizing (air) and inert (helium) atmospheres, four main temperature ranges can be distinguished: 1) < 150 °C - removal of adsorbed water (this temperature region is more pronounced for the weathered form of tile-like Barzas sapromixite); 2) 150-350 °C - removal of low molecular weight volatile components of coal in helium environment (with their simultaneous ignition in case of the decomposition in air); 3) 350-550 °C - the temperature region of primary or fast coal pyrolysis in an inert medium; in an oxidative medium, this stage of pyrolysis is accompanied by the burning of released tarry substances; 4) > 550 °C - the temperature region of secondary or high-temperature coal pyrolysis to form semi-coke in helium atmosphere, or the region of burning this semi-coke in air medium. Thermal breakdown processes of “exfoliated tiles” in the temperature range of the most intensive decomposition (350-550 °C) have been found to require less energy consumptions than the similar processes for tile-like Barzas coals (by 72-73 kJ/mol for both gas media of thermal treatment). It is supposed that the differences observed in thermal behavior of Barzas sapromixite forms under investigation may be related to the different contents of mineral components and their effects on the thermal decomposition of coal organic matter.

Temperature programmed decomposition of cobalt ethylene diamine complexes

1999 ◽  
Vol 334 (1-2) ◽  
pp. 141-148 ◽  
Author(s):  
S Dash ◽  
P.K Ajikumar ◽  
M Kamruddin ◽  
A.K Tyagi
Keyword(s):  
Ethylene Diamine ◽  
Temperature Programmed ◽  
Temperature Programmed Decomposition

A Study on Kinetics Parameters of Titanium Hydride Powder from Its TPD Spectrum for Metal Foam

2007 ◽  
Vol 534-536 ◽  
pp. 937-940 ◽  
Author(s):  
Dong Hui Yang ◽  
Sang Youl Kim ◽  
Bo Young Hur
Keyword(s):  
Titanium Hydride ◽  
Metal Foam ◽  
Al Alloy ◽  
Superposition Method ◽  
Kinetics Parameters ◽  
Foaming Process ◽  
Titanium Hydride Powder ◽  
Temperature Programmed ◽  
Set Up ◽  
Temperature Programmed Decomposition

In this paper, the whole temperature programmed decomposition (TPD) spectrum of titanium hydride was acquired by the special designed set-up. After separating and simulating the TPD spectrum by using Spectrum Superposition Method (SSM), Consulting Table Method (CTM) and differential spectrum technique, the kinetics parameters of titanium hydride and corresponding equations were obtained. Using these kinetics equations, the fabrication parameters of Al alloy foam can be determined and foaming process of Al alloy melt can be predicted.

Influence of atmosphere kind on temperature programmed decomposition of noble metal chlorides

2005 ◽  
Vol 435 (2) ◽  
pp. 151-161 ◽  
Author(s):  
Wojciech K. Jóźwiak ◽  
Tomasz P. Maniecki
Keyword(s):  
Noble Metal ◽  
Metal Chlorides ◽  
Temperature Programmed ◽  
Temperature Programmed Decomposition

scholarly journals Speciation of mercury in fly ashes by temperature programmed decomposition

2011 ◽  
Vol 92 (3) ◽  
pp. 707-711 ◽  
Author(s):  
M. Antonia Lopez-Anton ◽  
Ron Perry ◽  
Patricia Abad-Valle ◽  
Mercedes Díaz-Somoano ◽  
M. Rosa Martínez-Tarazona ◽  
...  
Keyword(s):  
Fly Ashes ◽  
Temperature Programmed ◽  
Temperature Programmed Decomposition

scholarly journals Speciation of Hg retained in gasification biomass chars by temperature-programmed decomposition

2014 ◽  
Vol 126 ◽  
pp. 1-4 ◽  
Author(s):  
Manuela Rallo ◽  
Aida Fuente-Cuesta ◽  
M. Antonia Lopez-Anton ◽  
Mercedes Díaz-Somoano ◽  
M. Rosa Martínez-Tarazona ◽  
...  
Keyword(s):  
Temperature Programmed ◽  
Temperature Programmed Decomposition

Temperature programmed decomposition of thorium oxalate hexahydrate

2001 ◽  
Vol 295 (2-3) ◽  
pp. 281-289 ◽  
Author(s):  
S Dash ◽  
R Krishnan ◽  
M Kamruddin ◽  
A.K Tyagi ◽  
Baldev Raj
Keyword(s):  
Temperature Programmed ◽  
Temperature Programmed Decomposition ◽  
Thorium Oxalate
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