Zobrazeno 1 - 10
of 11
pro vyhledávání: '"William R. Ladner"'
Autor:
William R. Ladner
Publikováno v:
Fuel Processing Technology. 14:137-143
Studies on the two-stage hydropyrolysis of UK coals in a reactor in which the coal is heated in one zone and the volatiles cracked in a separate isothermal zone have shown that 40% of the carbon in a high volatile bituminous coal can be converted int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1a40496fccfb2dba4c4a2e627ba71c5
https://doi.org/10.1016/0378-3820(86)90015-9
https://doi.org/10.1016/0378-3820(86)90015-9
Autor:
William R. Ladner, Colin E. Snape
Publikováno v:
Fuel. 57:658-662
The difficulties associated with obtaining quantitative results from 13C nuclear magnetic resonance spectroscopy are discussed. By careful choice of the experimental conditions quantitative results have been obtained for a mixture of model compounds,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51b57187be03911ecf95721d88da310a
https://doi.org/10.1016/0016-2361(78)90016-9
https://doi.org/10.1016/0016-2361(78)90016-9
Publikováno v:
Fuel. 58:413-422
The chemical structure of two extracts prepared by supercritical extraction of low-rank coals with toluene, with and without hydrogen, have been determined using solvent and Chromatographic fractionation followed by ultimate analysis, 1 H nuclear mag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f999fbebbef848b9df6726c989da0a1
https://doi.org/10.1016/0016-2361(79)90081-4
https://doi.org/10.1016/0016-2361(79)90081-4
Publikováno v:
Fuel Processing Technology. 8:155-168
Average chemical structures of asphaltenes from three coal liquefaction processes, namely hydroliquefaction (SRC-II), hydrogen-donor solvent extraction (HDS) and supercritical gas extraction (SCG), have been deduced using a structural analysis scheme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06827465540343a8cbd3068bd606120c
https://doi.org/10.1016/0378-3820(84)90039-0
https://doi.org/10.1016/0378-3820(84)90039-0
Publikováno v:
Fuel. 59:397-404
The hydropyrolysis of British coals was studied at hydrogen pressures of 5–15 MPa using heating rates of up to 30 K s −1 . In a single-stage reactor, hydropyrolysis of a high-volatile coal gave a maximum yield of 4.5 Wt % of single-ring aromatics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e4bdfdad05b476fd897d57391a1761f
https://doi.org/10.1016/0016-2361(80)90192-1
https://doi.org/10.1016/0016-2361(80)90192-1
Publikováno v:
Fuel. 67:822-830
Pyrolysis/mass spectrometry was carried out on a high-chlorine coal and on this coal after being washed free of chloride and treated with chlorine gas and with sodium chloride solution. For comparison a similar examination was undertaken on model org
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef8229c8d765bd91cf5f0dc755da7ad1
https://doi.org/10.1016/0016-2361(88)90157-3
https://doi.org/10.1016/0016-2361(88)90157-3
Autor:
David E. Games, Antony J. Berry, Monika Hohn, William R. Ladner, Brian J. Stokes, Alan A. Herod
Publikováno v:
Fuel. 66:935-946
The application of l.c.-m.s., using both quadrupole and magnetic sector mass spectrometers, to the analysis of aromatic fractions of hydropyrolysis tars and a Gray-King tar, is described. The results are compared with those obtained by g.c.-m.s. and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef211c52e217cde4bc919277ef4a7b9a
https://doi.org/10.1016/0016-2361(87)90333-4
https://doi.org/10.1016/0016-2361(87)90333-4
Publikováno v:
Fuel. 64:1394-1400
Information on the nature of aliphatic groups in some bituminous coals and lignites was obtained by determining their fate during extraction and pyrolysis processes of differing severity. Aromatics (neutral oils) and asphaltenes from supercritical ga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::004989bcb5b08271ff3cb8740f93a70e
https://doi.org/10.1016/0016-2361(85)90341-2
https://doi.org/10.1016/0016-2361(85)90341-2
Publikováno v:
Fuel. 63:897-903
Two British coals—Linby high-volatile bituminous and Abernant anthracite — and an Australian brown coal were pyrolysed at 575 °C in hydrogen or nitrogen at 0.1, 5 and 30 MPa in an inclined, single-stage reactor. Hydrogen pressures of ⩾ 5 MPa l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6ddbc2547a2f9651e5a7aeac612f11b
https://doi.org/10.1016/0016-2361(84)90306-5
https://doi.org/10.1016/0016-2361(84)90306-5
Publikováno v:
Fuel. 60:139-144
The vapour-phase thermal cracking (i.e. non-catalytic) of a range of coal-derived materials and pure compounds using laboratory scale reactors is described. Up to 27% benzene, toluene and xylenes (BTX) and 24% ethylene were obtained by cracking hydro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9f1378298de66d2fc37f024e1b27534
https://doi.org/10.1016/0016-2361(81)90009-0
https://doi.org/10.1016/0016-2361(81)90009-0