Results 321 to 330 of about 63,629 (381)

Temperature Calibration in Thermogravimetry

1980
Five magnetic materials have been tested and certified as temperature reference materials for thermogravimetry. Use of these materials will enable the relating of data from thermobalances of different designs.
Paul D. Garn, Oscar Menis, Hans-Georg Wiedemann   +2 more
openaire   +2 more sources

Thermogravimetry of dihydroxyviolanthrone esters

Thermochimica Acta, 1982
Abstract Dihydroxyviolanthrone esters of straight chain alkanoic acids contain a thermally stable aromatic system connected by an ester linkage to an aliphatic hydrocarbon moiety. These esters provide excellent models for studying the different pyrolysis behavior of aliphatic and aromatic structures. Using dynamic and isothermal thermogravimetry, the
Albrecht H. Granzow, R. G. Ferrillo, E. Klingsberg   +2 more
openaire   +2 more sources

Thermogravimetry of some copolymers

Thermochimica Acta, 1974
In order to produce more thermally stabIe materials it is desirable to be able to relate stability and chemical structures Some guides in this direction have already been defined. For example it is now accepted that crosshnking increases stability. The development of a technique r for synthesising polymers of controlled chemical structure makes it ...
J.R. MacCallum, K. Paterson, D.H. Richards   +2 more
openaire   +2 more sources

Image furnace for thermogravimetry

Journal of Physics E: Scientific Instruments, 1970
A vacuum microbalance system is described in which samples were heated by focused radiation. The heat source was a 1 kW projector lamp and an ellipsoidal mirror. Small specimens of good conductors could be heated rapidly and then continuously weighed at controlled temperatures of up to 1000°C, while the rest of the vacuum system remained cool ...
J W Linnett, W T Bordass
openaire   +2 more sources

Points to be considered in thermogravimetry

Materials and Corrosion, 1993
AbstractContinuous thermogravimetry is a common method to test materials in gaseous corrosive environments at high temperatures and to elucidate kinetics and mechanisms of high temperature corrosion. Recommendations how to conduct thermogravimetric tests are collected here, points to be considered including sample size and form, surface preparation ...
James F. Norton, S. Mrowec, Willem J. Quadakkers, Z. Zurek, F. Gesmundo, W. Auer, D. B. Meadowcroft, D. J. Hall, F. Bregani, H. J. Grabke, M. J. Bennett, S. R. J. Saunders   +11 more
openaire   +2 more sources

Thermogravimetry of manganese dioxides

Thermochimica Acta, 1994
Abstract A number of manganese dioxides have been synthesized and investigated by X-ray diffraction, electron microscopy and thermogravimetry under flowing oxygen. The TG curves show, (a) water loss, (b) release of OH-water, and (c) oxygen release.
openaire   +2 more sources

Pyrolysis characteristics, kinetics, thermodynamics and volatile products of waste medical surgical mask rope by thermogravimetry and online thermogravimetry-Fourier transform infrared-mass spectrometry analysis

Fuel, 2021
Ruiyu Chen, Deyuan Zhang, Xiaokang Xu, Yougen Yuan   +3 more
semanticscholar   +1 more source

Synergetic Effect of Co-pyrolysis of Cellulose and Polypropylene over an All-Silica Mesoporous Catalyst MCM-41 Using Thermogravimetry–Fourier Transform Infrared Spectroscopy and Pyrolysis–Gas Chromatography–Mass Spectrometry

, 2017
Biomass is one of the promising alternative materials to solve the energy and environmental crisis. Fast pyrolysis is one of the most economical and commercially realizable technologies to convert biomass to useable fuels and chemicals.
J. Xue, Jian-kun Zhuo, Mi Liu, Y. Chi, Dahu Zhang, Q. Yao   +5 more
semanticscholar   +1 more source

Vapor pressure determination by thermogravimetry

Thermochimica Acta, 2001
A method for measuring the vapor pressures of a wide range of materials using a conventional thermobalance and standard sample holders is described. The equipment is calibrated using pure reference materials of known vapor pressure and exploiting the relationship between volatilization rate and vapor pressure based on the Langmuir equation for free ...
openaire   +2 more sources

Biomass proximate analysis using thermogravimetry

Bioresource Technology, 2013
This work proposes a 25 min-last thermogravimetric method as a tool to determine biomass sample's proximate analysis data (moisture, ash, volatile matter and fixed carbon contents) just by direct measure of weight changes on each sample's TG chart. Compared with international standards commonly used to that aim, TG is a faster and easier to develop ...
García Fernández, Roberto, Pizarro García, Consuelo, Gutiérrez Lavín, Antonio, Bueno de Las Heras, Julio Luis   +3 more
openaire   +4 more sources