Zobrazeno 1 - 10
of 51
pro vyhledávání: '"JOHN R. KERSHAW"'
Publikováno v:
Energy & Fuels. 14:476-482
Constant-energy synchronous fluorescence spectroscopy was used to examine the aromatic structural features of the tars from the pyrolysis of Loy Yang brown coal in a wire-mesh reactor. Tars from the pyrolysis of the raw coal and its H-form and Ca-for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65b8c993758cf938bffb4d8f1c50035a
https://doi.org/10.1021/ef990181u
https://doi.org/10.1021/ef990181u
Publikováno v:
Fuel. 79:427-438
H-, Na- and Ca-form coal samples were prepared from a sample of Loy Yang brown coal and pyrolysed in a wire-mesh reactor. The tars were characterised with UV-absorption and UV-fluorescence spectroscopies. Increases in heating rate (1 to 2000 K s −1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9496c907d48a436dd7002eafc805299
https://doi.org/10.1016/s0016-2361(99)00178-7
https://doi.org/10.1016/s0016-2361(99)00178-7
Autor:
John R. Kershaw, J.C. Fetzer
Publikováno v:
Fuel. 74:1533-1536
High-performance liquid chromatography using a shape-selective reversed phase and a diode-array absorbance detector was used to identify several 7–10-ring polycyclic aromatic hydrocarbons (PAHs) in coal tar pitches. The structures of these PAHs sug
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::948a214f1a16ed970d815f85ddabb893
https://doi.org/10.1016/0016-2361(95)00117-n
https://doi.org/10.1016/0016-2361(95)00117-n
Autor:
John R. Kershaw
Publikováno v:
Fuel. 74:1104-1107
The paper demonstrates the potential of both conventional and synchronous fluorescence spectroscopy to demonstrate changes during mesophase formation in petroleum pitch (Ashland A-240)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f473ad77e393826ef917902a8cf90f4
https://doi.org/10.1016/0016-2361(95)00003-n
https://doi.org/10.1016/0016-2361(95)00003-n
Autor:
John C. Fetzer, John R. Kershaw
Publikováno v:
Polycyclic Aromatic Compounds. 7:253-268
Room temperature fluorescence spectroscopy of petroleum and its processed fractions, coal-derived liquid products and shale oil are reviewed. Conventional fluorescence, synchronous scanning and excitation-emission matrix are covered. The problems tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a97af585b0854b17d0bb3c15baafe8c6
https://doi.org/10.1080/10406639508009628
https://doi.org/10.1080/10406639508009628
Autor:
John R. Kershaw, Paul James Smart
Publikováno v:
The Journal of Supercritical Fluids. 6:155-163
Extraction of coal-tar pitch with supercritical toluene gave extracts with very low contents of quinoline insolubles, a prerequisite for carbon-fiber production. The extraction yield increased with increasing pressure, but was slightly lower at 400°
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::efdf160773220790d1509803c16c4a50
https://doi.org/10.1016/0896-8446(93)90014-o
https://doi.org/10.1016/0896-8446(93)90014-o
Autor:
Krista J. T. Black, John R. Kershaw
Publikováno v:
Energy & Fuels. 7:420-425
«Average structure» data for coal-tar and petroleum (Ashland A-240) pitches are reported, based on NMR spectroscopy combined with elemental and molecular weight analyses. The average structure of both coal-tar and A-240 pitches indicates that they
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d59e6e636484d5d81b2477645be93fe
https://doi.org/10.1021/ef00039a014
https://doi.org/10.1021/ef00039a014
Autor:
John R. Kershaw
Publikováno v:
Polycyclic Aromatic Compounds. 3:185-197
A coal-tar pitch has been analyzed by a variety of spectroscopic methods. The whole pitch was studied by elemental analysis, IR, 13C and 1H NMR as well as soft ionization MS techniques. The complex nature of the pitch was apparent from the MS studies
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0d524e89fc4e5d901769aa39e1a1198
https://doi.org/10.1080/10406639308047870
https://doi.org/10.1080/10406639308047870
Autor:
John R. Kershaw, Geoffrey H. Taylor
Publikováno v:
Fuel Processing Technology. 31:127-168
This review discusses the geological properties of Gondwana coals especially the Permian coals of Australia and South Africa and how the liquefaction, carbonization, combustion and beneficiation of these coals are affected by their properties. Many G
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6906047b84b20313872db94db4cd36a3
https://doi.org/10.1016/0378-3820(92)90016-j
https://doi.org/10.1016/0378-3820(92)90016-j
Autor:
John R. Kershaw
Publikováno v:
Fuel. 77:1113-1115
Extraction of scrap tyres with supercritical solvents was examined. Virtually total extraction of the rubber components of the tyre occurred at 350°C using either n-butanol or toluene as the solvent. At lower temperatures, using ethanol as the super
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5d96c509f301ff5f0eea1d74eef4bdc
https://doi.org/10.1016/s0016-2361(97)00280-9
https://doi.org/10.1016/s0016-2361(97)00280-9