• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 337
  • 147
  • 82
  • 60
  • 45
  • 13
  • 10
  • 10
  • 7
  • 7
  • 6
  • 5
  • 5
  • 5
  • 5
  • Tagged with
  • 896
  • 177
  • 139
  • 124
  • 116
  • 115
  • 91
  • 90
  • 87
  • 79
  • 77
  • 71
  • 58
  • 57
  • 56
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The kinetics and mechanisms of some gas phase pyrolyses

Blades, Arthur Taylor, January 1952 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1952. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 104-105).
2

Pyrolytic Study of 2-Azidomethylindole, 3-Azidomethylpyridine and 2-Azidomethylbenzene

Lee, Hsin-Chen 27 June 2000 (has links)
Flash vacuum pyrolysis (FVP) of 2-(azidomethyl)indole, via a nitrene intermediate gave 1,3,5-tri-2-indolyl-2,4-diaza-1,4-pentadiene as the main product. By the same route, FVP of 3-(azidomethyl)pyridine produced 1,3,5-tri-2-pyridyl-2,4-diaza-1,4-pentadiene.On the other hand, FVP of (2-azidoethyl)benzene gave 1,2-diphenylethane and 3,5-diphenylpyridine as the pyrolysis product.
3

Acetone-LIF at Elevated Pressure and Temperature for 282nm Excitation: Experiments and Modeling

Hartwig, Jason William January 2010 (has links)
Thesis(M.S.)--Case Western Reserve University, 2010 / Title from PDF (viewed on 2009-11-23) Department of EMC - Mechanical Engineering Includes abstract Includes bibliographical references and appendices Available online via the OhioLINK ETD Center
4

Rapid pyrolysis of polymeric solid propellant binders

Powers, Robert John 08 1900 (has links)
No description available.
5

A theoretical investigation of the pyrolysis of solid fuels including condensation effects

Kailasanath, Kazhikathra 08 1900 (has links)
No description available.
6

The influence of high heating rate hydropyrolysis on the primary devolatilisation of coal

Strugnell, Brian January 1995 (has links)
The hydropyrolysis of coal is considered to be an attractive future route for the conversion of coal to gaseous and liquid fuels and chemical feedstocks. This thesis comprises a study of the behaviour of coal under the conditions pertinent to those envisaged within a commercial hydropyrolysis process, that is, using pulverised coal, a short coal-reactor residence time, high hydrogen pressure and high heating rate. For this purpose, an electrically heated grid apparatus has been used. The experimental conditions have been weighted towards achieving a maximum loss of primary volatile products whilst minimising unwanted and poorly controlled secondary reactions such as char hydrogasification. In this way, it has been possible to compare the influence of a hydrogen atmosphere on primary devolatilisation for a range of coals. Overall, the total volatile release is enhanced by hydropyrolysis to a degree dependent upon the partial pressure of the hydrogen. The increased yield is due mainly to an increase of saturated hydrocarbons, although the production of some individual species such as carbon monoxide, carbon dioxide and unsaturated hydrocarbons are diminished with respect to helium pyrolysis. The magnitude of both total and individual product yields vary with coal type, as does the degree by which these yields are influenced by a hydrogen atmosphere. This influence is considered to depend specifically on the type and number of various reactive sites and functionalities within coal and also on their accessibility for hydrogen, which is in tum dependent upon the thermoplastic behaviour of the coal. A further factor governing both product yields and hydrogen influence is the coal petrographic composition. Inertinite macerals have been observed to be significantly more responsive than exinite or vitrinite to hydrogen, producing relatively high methane yields. Thus it has been shown that inertinite rich coals or enriched feedstocks may be suitable candidates for hydropyrolysis processing. The data obtained have also demonstrated how a number of coal properties obtained by standard analytical techniques may be used for coal selection and yield prediction. BS volatile matter, carbon content, vitrinite reflectance and both 0/C and H/C atomic ratios are the most useful of the properties investigated in this respect. This is considered to be an important step towards the foundation of a classification system for hydropyrolysis processing.
7

Sulphur transformations during pyrolysis of low-rank coals and characterisation of Ca-based sorbents /

Telfer, Marnie. January 1999 (has links) (PDF)
Thesis (Ph.D.) -- University of Adelaide, Dept. of Chemical Engineering, 2000. / Bibliography: leaves 279-293.
8

Pyrolysis of fine coal particles at high heating rate and pressure /

Mill, Christopher John. January 2000 (has links)
Thesis (Ph. D.)--University of New South Wales, 2000. / Includes bibliographical references (leaves 332-349). Also available online.
9

Formation and analysis of tars produced by the pyrolysis of acetylene /

Napier, Ian Murray. January 1959 (has links) (PDF)
Thesis (M.Sc.)--University of Adelaide, 1959. / [Typewr.].
10

The kinetics and mechanism of pyrolytic reactions : the pyrolysis of some simple methyl esters in the gas phase

Peterson, R. M. January 1965 (has links)
No description available.

Page generated in 0.0259 seconds