97/02788 Thermogravimetric studies on the global kinetics of carbon gasification in nitrous oxide

1997 ◽  
Vol 38 (4) ◽  
pp. 229-230
Keyword(s):  
Nitrous Oxide ◽  
Carbon Gasification ◽  
Thermogravimetric Studies ◽  
Kinetics Of

scholarly journals Thermogravimetric Studies of Characteristics and Kinetics of Pyrolysis of Buton Oil Sand

2014 ◽  
Vol 61 ◽  
pp. 2741-2744 ◽  
Author(s):  
Pengfei Liu ◽  
Mingming Zhu ◽  
Zhezi Zhang ◽  
Wenchao Wan ◽  
Setyawati Yani ◽  
...  
Keyword(s):  
Oil Sand ◽  
Thermogravimetric Studies ◽  
Kinetics Of

Thermogravimetric studies on co-pyrolysis of raw/torrefied biomass and coal blends

2020 ◽  
Vol 38 (11) ◽  
pp. 1259-1268
Author(s):  
NL Panwar ◽  
Bhautik Gajera ◽  
Sudhir Jain ◽  
BL Salvi
Keyword(s):  
Thermogravimetric Analysis ◽  
Thermal Degradation ◽  
Physicochemical Properties ◽  
Model Fitting ◽  
Cotton Stalk ◽  
Fitting Method ◽  
Torrefied Biomass ◽  
Three Stages ◽  
Thermogravimetric Studies ◽  
Kinetics Of

The pyrolysis and co-pyrolysis behaviours of cotton stalk (CS), torrefied cotton stalk (TCS) and mined coal, as single fuels, and their blends, have been examined through thermogravimetric analysis. Biomass has been torrefied at 250°C for 45 min to enhance physicochemical properties, and then mixed with mined coal for co-pyrolysis. Thermal degradation of CS and TCS is characterized by a reaction. However, this is not the case for mined coal, which shows a single-stage reaction. The thermal degradation of all blends was done in three stages: dehydration; biomass and small mined coal; and lignin or mined coal. A similar trend emerged for mass loss of individual fuels, which depended mainly on their ratios in the blend. The kinetics of pyrolysis and co-pyrolysis of all fuels were calculated at 20°Cmin−1 heating rate using the Coats−Redfern model-fitting method.

scholarly journals DECOMPOSITION KINETICS OF NITROUS OXIDE ON MANGANESE DIOXIDE

1974 ◽  
Vol 6 (5) ◽  
pp. 438-442 ◽  
Author(s):  
MASAYOSHI KOBAYASHI ◽  
HARUO KOBAYASHI
Keyword(s):  
Nitrous Oxide ◽  
Manganese Dioxide ◽  
Decomposition Kinetics ◽  
Kinetics Of

Study of kinetics of carbon gasification reactions

1981 ◽  
Vol 20 (1) ◽  
pp. 6-13 ◽  
Author(s):  
Satyanarayana Katta ◽  
Dale L. Keairns
Keyword(s):  
Carbon Gasification ◽  
Kinetics Of

scholarly journals The catalytic decomposition of nitrous oxide on the surface of gold: a comparison with the homogeneous reaction

1925 ◽  
Vol 108 (745) ◽  
pp. 211-215 ◽  
Keyword(s):  
Nitrous Oxide ◽  
Catalytic Decomposition ◽  
Bimolecular Reaction ◽  
Homogeneous Reaction ◽  
Gaseous Reaction ◽  
Measurable Velocity ◽  
Rare Class ◽  
The Moment ◽  
Kinetics Of ◽  
Decomposition Of Nitrous Oxide

The bimolecular reaction 2N 2 O = 2N 2 + 2N 2 was recently shown to belong to the rather rare class of homogeneous reactions. Decomposition of two molecules of nitrous oxide takes place when a collision of a certain critical degree of violence occurs in the gas. At the moment of collision the two molecules must possess a combined energy of at least 58,000 calories (per 2 gram molecules), and it is probable that most of the collision in which this condition is fulfilled are fruitful. A comparison between the kinetics of this homogeneous decomposition and the corresponding reaction proceeding catalytically at the surface of a solid might be expected to throw light on the mechanism of heterogeneous catalysis. Previous efforts ( loc. cit .) to accelerate the reaction catalytically by the introduction of metals into the bulb in which the homogeneous reaction was going on were fruitless, since the reaction, if any, which took place at the surface of the metal was slow in camparison with the gaseous reaction. This difficulty was overcome by using as a catalyst a fine metal wire heated electrically. This could be raised to a sufficiently high temperature to cause the surface reaction to proceed with measurable velocity while the bulk of the gas was kept cold, thus eliminating the homogeneous reaction. Experiments made with platinum wires in this way were successful. The kinetics of the decomposition of nitrous oxide on the surface of platinum are summarized in the equation – d [N 2 O]/ dt = k [N 2 O]/1 + b [O 2 ]. The reaction is unimolecular, but is complicated by the strong retarding action of the oxygen formed.

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