High-temperature thermogravimetric analysis. Influence of gas pressure on kinetics of reactions in the solid state

1985 ◽  
Vol 30 (1) ◽  
pp. 121-128 ◽  
Author(s):  
G. Thomas ◽  
F. Ropital
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Thermogravimetric Analysis ◽  
Gas Pressure ◽  
Kinetics Of

scholarly journals A Solid-State Pathway towards the Tunable Carboxylation of Cellulosic Fabrics: Controlling the Surface’s Acidity

Membranes ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 514
Author(s):  
Eugenio H. Otal ◽  
Manuela L. Kim ◽  
Juan P. Hinestroza ◽  
Mutsumi Kimura
Keyword(s):  
Methylene Blue ◽  
Surface Modification ◽  
High Temperature ◽  
Solid State ◽  
Effect Of Temperature ◽  
Cationic Dye ◽  
Kinetics Of Adsorption ◽  
Starting Point ◽  
Reaction Proceeds ◽  
Kinetics Of

We report on a tunable solid-state approach to modify the acidity of cotton substrates using citric, oxalic, and fumaric acids. The first stage of the method involves soaking the cotton swatches in an ethanolic saturated solution of the corresponding acid. After drying, the carboxylation reaction proceeds at high temperature (T > 100 °C) and in solid state. We quantified the effect of temperature and reaction time on the solid-state carboxylation reaction, which allowed us to tune the carboxylation degree and the acidity of the surface. We characterized the modified cotton by performing adsorption isotherms and by determining the kinetics of adsorption of a cationic dye: methylene blue (MB). We found that the MB uptake kinetics varied as a function of the acidic strength of the surface, which is closely related to the strength of the acid used for surface modification. The proposed solid-state cotton carboxylation procedure allows us to achieve sustainable cotton modification, which constitutes a starting point for several applications using cotton as the substrate.

High-Temperature Gravimetric Study on the Kinetics of the Formation of SrTiO3 by Solid State Reaction of SrCO3 and TiO2

2019 ◽  
Vol 16 (44) ◽  
pp. 205-210 ◽  
Author(s):  
Eiki Niwa ◽  
Kazuhisa Sato ◽  
Keiji Yashiro ◽  
Junichiro Mizusaki
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Kinetics Of

Thermogravimetric Measurements in an Electroynamic Balance

1986 ◽  
Vol 87 ◽  
Author(s):  
R. E. Spjut ◽  
J. F. Elliott ◽  
P. Bolsaitis
Keyword(s):  
High Temperature ◽  
Thermogravimetric Analysis ◽  
Laser Beam ◽  
Aluminum Oxide ◽  
Silicon Dioxide ◽  
Time Resolution ◽  
Pulse Heating ◽  
Relative Temperature ◽  
Plasma Torches ◽  
Kinetics Of

AbstractAn Electrodynamic Thermogravimetric Analysis (EDTGA) Instrument has been developed for the study of kinetics of gas-solid reactions and phase transformations of levitated particles at high temperature. The levitated particles may be heated with a focused laser beam and their temperature and weight monitored during the process. The particles that can be studied are, approximately, 10 to 150 microns in diameter and it is aimed to produce temperature pulses comparable to those encountered in plasma torches and reactors. The instrumentation implemented in the system permits the measurement and or control of relative temperature, weight change, and energy flux to the particle with a time resolution of less than one millisecond. Selected results obtained from pulse heating aluminum oxide and silicon dioxide are presented.

Efficient and thermally stable blue-emitting Ce3+ doped LaAl(Si6−zAlz)(N10−zOz) (JEM:Ce) phosphors for white LEDs

2017 ◽  
Vol 5 (32) ◽  
pp. 8295-8300 ◽  
Author(s):  
Chun-Yun Wang ◽  
Otmar Melvin ten Kate ◽  
Takashi Takeda ◽  
Naoto Hirosaki
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Gas Pressure ◽  
Thermally Stable ◽  
Reaction Method ◽  
White Leds

La2O3, LaN, Si3N4, AlN and CeO2 have been used as starting materials to synthesize Ce doped LaAl(Si6−zAlz)(N10−zOz) (z ≈ 1, termed the JEM phase) phosphors, via a solid-state reaction method in a gas pressure furnace at a high temperature.

scholarly journals THERMOGRAVIMETRIC ANALYSIS OF NANO CRYSTALLINE CERAMIC PbSrCaCuO

2014 ◽  
Vol 10 (7) ◽  
pp. 2916-2920 ◽  
Author(s):  
Reenu Jacob ◽  
Jayakumari Isac
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Thermogravimetric Analysis ◽  
Elemental Composition ◽  
High Energy ◽  
Milling Process ◽  
Nano Crystalline ◽  
State Technique ◽  
Energy Ball ◽  
Crystalline Ceramic

Nano crystalline ceramic PbSrCaCuO was prepared by the solid state technique via a high-energy ball milling process through mechanically assisted synthesis.The prepared sample was then subjected to calcinations to acquire the desired homogeneity and phase formation. To establish the elemental composition EDX analysis was done.TGA and DTA were used to study the behaviour of the sample upon heating to a high temperature.

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