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Pyrolysis

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An Elementary Reaction Model For Thermal Decomposition Of Cf2cl2 In A H2 Atmosphere And Experimental Studies On Oxidation Of Ch3oh Plus Ch4 Under Fuel Rich, Stoichiometric And Fuel Lean Conditions, Cheng Guo May 1993

An Elementary Reaction Model For Thermal Decomposition Of Cf2cl2 In A H2 Atmosphere And Experimental Studies On Oxidation Of Ch3oh Plus Ch4 Under Fuel Rich, Stoichiometric And Fuel Lean Conditions, Cheng Guo

Theses

Pyrolysis of CF2CL2 in an atmosphere of H2, has been studied in a tubular flow reactor, 723 to 873 K. Overall eaction conversion proceeds via loss of Cl with CHF2CL formation, then loss of the second Cl atom and CH2F2 product. Initiation occurs by unimolecular Cl atom loss. Subsequent chain propagation steps rapidly generate active H atoms which abstract Cl atoms, but abstraction of fluo-rine atoms by atomic hydrogen is slow at the temperatures of this study.

A small mechanism, about 35 elementary reaction steps, and a thermodynamic data base …


I: Reaction Of Ch3c1 With H2 And Ch4 Under Oxidation And Pyrolysis Conditions Ii: Kinetic Analysis Of C2h6, C2h4, And C2h2 Reactions With Oh, O, H, And Cl, Qing-Rui Yu May 1992

I: Reaction Of Ch3c1 With H2 And Ch4 Under Oxidation And Pyrolysis Conditions Ii: Kinetic Analysis Of C2h6, C2h4, And C2h2 Reactions With Oh, O, H, And Cl, Qing-Rui Yu

Theses

Experimental and detailed modeling are presented for the high temperature combustion systems involving CH3Cl/CH4/O2 and C33Cl/H2/O2 reactions. More important C2 species reaction rate constant are created. A mechanism incorporating 263 step elementary reactions and 76 stable compounds and active radicals is developed based on (1) fundamental thermochemical and Kinetic principles (2) Quantum Rice-Ramsperger-Kassel (QRRK) theory analysis (3) accurate thermodynamic Properties and thermochemical analysis (4) reliable experimental data to validate our model.

The study of Part II evaluates and analyzes theoretically the rate constants of C2H6, C …


Determination Of The Rate Of Formation Of Hcn, Mitchell Hull Nov 1977

Determination Of The Rate Of Formation Of Hcn, Mitchell Hull

Honors Theses

Nitric oxide is a major air pollutant arising from fossil fuel combustion, yet the fuel contribution to its formulation is uncertain. Since, in combustion, fossil fuels undergo disintegration before oxidation takes place, the study of the pyrolsis of a model constituent of fossil fuels can shed light on NO formation. The rate of inert pyrolytic disappearance of pyridine and the rate of formation of the principal Nitrogen-containing pyrolytic product, HCN, was studied in an inert atmosphere. The rate constant for the formation of HCN and its temperature dependence were determined.