- Email: [email protected]
04597 Changes in molecular biomarker and bulk carbon skeletal parameters of vitrinite concentrates as a function of rank
01
Solid fuels (sources, winning, properties)
01 SOLID FUELS Sources,
Winning,
Properties
‘°F-‘3C cross polarization “C NMR: An exploratory 96104593 study of structure and reactivity of fluorinated coal using elemental fluorine Hagaman, E. W. and Lee, S. K. Coal Sci. Technol., 1995, 1, 339-341. Demineralized lignite was fluorinated with Fz in the presence and absence of KF to selective/r fluorinate CH, a?d tq:tiary CH bonds, which were then examined by 19F- C cross-polarization C-NMR spectroscopy. The relative concentration of CF and CF, that are generated in the lignite was sensitive to the acidity of the reaction medium. Assesslng the geologlcal controls of sulfur in coal 96104594 seams. Progress toward predictive mapping Cavender, P. F. and Spears, D. A. Inst. Chem. Eng. Symp. Ser., 1995, (138), 197-204. Investigates some geological controls on sulphur distribution in coal and outlines the ability to map and predict seam sulphur which could ultimately lead to the mining of coal with a lower sulphur content. Access to the British Coal seam database, for the Parkgate Seam, Nottinghamshire, has allowed a considerable amount of data to be investigated. 96104595
96tO4602 Effect of coal properties and agglomerant type on fine coal filtration Yu, 2. and Laskowski, .I. S. Proc. Process. Hydrophobic Miner. Fine Coal, UBC-McGill Bi-Annu. Int. Symp. Fundam. Minera. Process, Canadian Inst. of Mining, Metallurgy & Petroleum, 1995, 527-539. The information available in literature on the use of various flocculants, surfactants and oily hydrocarbons on filtration additives does not account for the effect of coal surface properties on fine coal filtration. The tests reported in this paper have been carried out with several coals varying in wettability, hydrophobic latices, semi-hydrophobic flocculants and poiyacrylamide, and various surfacrants and emulsions prepared with these surfactants. 96104603 Effects of CaO, high-temperature treatment, carbon structure, and coal rank on Intrinsic char oxidation rates (&cf_:;Fishnan. R. and Bartholomew, C. H. Energy Fuels, 1996, 10, (3), The low-temperature kinetics of oxidation of Dietz sub-bituminous coal char prepared in a methane flat-flame burner was studied by TGA both in the presence and in the absence of calcium minerals. The examination of mineral/organic matter associa96104604 tions in coal Atkin, B. P. and Clift, D. CoalSci. Technol., 1995, 1, 183-186. Presents preliminary results on a method of study of distribution of mineral matter in coals which is based on low temperature ashing of a polished block and SEM and EDX analysis.
Assessment of coal depositional environment and maturity by reflection FT-IR micro-spectroscopy Ruau, 0. er al., Coal Sci. Technol., 1995, 1, 119-122. Specular reflection micro-IR spectroscopy of vitrinites of Brent (North Sea) coals was used to obtain evidence of major variations of vitrinite reflectance that could not be related only to the maturation process. The combined IR and microlithotype analysis of the vitrinites revealed variations of conditions of coal deposition. Upper delta plain vitrinites were more oxidized and less aliphatic than their lower delta plain homologs.
96/04605 Formation and thermolysis of coal Inclusion compounds with alkali metal hydroxides Kucherenko, V. A. and Zubova, T. I. Z/J. Obshch. Khim., 1995, 65, (8), 1256-1264. (In Russian) Presents a study of intercalation of noncrystalline coal lattice during interaction with aqueous alkali metal hydroxides and thermal destruction of the formed inclusion compounds. It was found that the thermolability of the inclusion compounds increased in the order from LiOH to CsOH.
Biomarkers assemblage in relation to coal rank 96/04596 Czechowski, F. Coal Sci. Technol., 1995, 1, 291-294. The paper describes the extent and degree of coalification assemblages in molecular composition of biomarkers. An average molecular mass of nalkanes and methylphenthrene index can be used for the assessment of the coalification stage as an alternative to vitrinite reflectance.
Fractal approach to coal particle surface 96104606 Zhang, X. et al., Coal Sci. Technol., 1995, 24, (l), 19-22. Discusses the heterogeneous surface and rhe complex pore structure of coals which can be described bv a dimension between two and three. The concept of fractal dimension D’is illustrated in a form adapted to surface problems.
96104597
Changes in molecular biomarker and bulk carbon skeletal parameters of vitrinite concentrates as a function of rank Love, G. D. er al., Energy Fuels, 1996, 10, (l), 149-157. A sequential extraction scheme to differentiate between molecular alkanes and those covalently-bound to the macromolecular structure was applied lo a suite of vitrinite concentrates handpicked from six UK bituminous coals, with a rank corresponding to R, = 0.47-1.32 (at 546 nm). The aim was lo ascertain whether the biomarker maturity indexes (1) were consistent with the measured vitrinite reflectance values and (2) differed markedly for the easily extractable, clathrated, and covalently-bound phases. 96104596 A chemical characterization of maceral fractions from an Australian coking coal Giuliani, J. D. et al., Coal Sci. Technol., 1995, 1, 267-270. The vitrinite and inertinile macerals release qualitative similar organic volatiles on flash pyrolysis with inertinites producing over 50% of that from vitrinites. These findings centre on the reaction of Australian inertinite. The derived data clearlv differentiate vitrinite from inertinite unlike earlier reports which had indicated linear Ire&s/relationships with density. 96104599
The combustible sulfur content of Turkish coals Uzun, D. et al., Coul Sci. Technol., 1995, 24, (l), 79-82. The paper presents the results of total and combustible sulphur determinations and proximate analysis for 30 selected Turkish coals. A recently r’;veloped indirect method is employed for combustible sulphur determinations.
96104600 Depositional sequence feature of Jurassic coal formation in Tu-Ha Basin, China Wu, Y. Shiyou Kanmn Yu Koifa, 1995, 22, (5). 35-39. (In Chinese) Five depositional system tracts are presented and 6 system tract models are proposed. 96104601 Ptolemais Kavouridis, Greek) Presents the and abrasive
330
Determination of the quality of lignite mined in open-pit mines for power generation C. and Galetakis, hl. 0rykros Plouros, 1996, 98, 25-42. (In proximate and ultimate ana!ysis data, heating value, grinding properties, and ash properties of lignite.
Fuel and Energy
Abstracts
September
1996
96104607 Geochemistr of autochthonous and hypautochthonous slderite- cyolomite coal-balls (Foord Seam, Bolsovian, Upper Carboniferous), Nova Scotia, Canada Zodrow, E. L. er al., Int. J. Coal Geol., 1996, 29, (l), 199-216. 96/04606 Geochemistry of copper, zinc and lead in Bulgarian coal deposits Eskenazy, G. God. Sofii. Lini,,. ‘Sv. Klimenf Okhridski’, Geol. -Geogr. Fak., 1995, 87, (l), 584-599. The paper discusses the contents of copper, zinc, and lead in the coals, coaly shales and partings of 14 Bulgarian coal deposits. 96104609
Geological controls on the coal quality of the Mequinenza subbituminous coal deposit, northern Spain Querol, X. er al., I/lr. J. Coal Geol., 1996, 29, (I), 67-91. The results of geological, petrological, geochemical and mineralogical studies, performed to determine the coal-forming paleoenvironmental conditions which gave rise 10 anomalous enrichments in organic sulphur, molybdenum, and uranium in (he Oligocene hlequinenza subbituminous coal deposit of northeaslern Spain, were summarized. 96104610 Geostatistical, spectral and fractal simulation of sulfur distribution in a coal seam Sharma, P. and Ramani, R. V. Publ. Ausrralas, Insr. Min. Metall., 1995, (4), 149-159. Discusses a comparative performance evaluation of gcostatistical, spectral, and fractal methods made for short-scale variability prediction. 96104611 The Grootegeluk formation in the Waterberg Coalfield, South Africa: Facies, palaeoenvironment and thermal history - evidence from organic and elastic matter Faure, K. er al, Im. J. Coal Geol., 1996, 29, (l), 147-186. The Grootegeluk Formation of the Waterberg Coalfield, -7Om thick, consists of relatively thin coal beds interbedded with numerous mudstone and carbonaceous mudstone layers. ?rlaceral analyses of rhe coal seams and the interbedded carbonaceous mudstones showed that vitrinite is the dominant maceral (up to 90 vol%), and inerlinile, liptinite and reactive semifusinite generaly occur in minor proportions.
Solid fuels (sources, winning, properties)
01 SOLID FUELS Sources,
Winning,
Properties
‘°F-‘3C cross polarization “C NMR: An exploratory 96104593 study of structure and reactivity of fluorinated coal using elemental fluorine Hagaman, E. W. and Lee, S. K. Coal Sci. Technol., 1995, 1, 339-341. Demineralized lignite was fluorinated with Fz in the presence and absence of KF to selective/r fluorinate CH, a?d tq:tiary CH bonds, which were then examined by 19F- C cross-polarization C-NMR spectroscopy. The relative concentration of CF and CF, that are generated in the lignite was sensitive to the acidity of the reaction medium. Assesslng the geologlcal controls of sulfur in coal 96104594 seams. Progress toward predictive mapping Cavender, P. F. and Spears, D. A. Inst. Chem. Eng. Symp. Ser., 1995, (138), 197-204. Investigates some geological controls on sulphur distribution in coal and outlines the ability to map and predict seam sulphur which could ultimately lead to the mining of coal with a lower sulphur content. Access to the British Coal seam database, for the Parkgate Seam, Nottinghamshire, has allowed a considerable amount of data to be investigated. 96104595
96tO4602 Effect of coal properties and agglomerant type on fine coal filtration Yu, 2. and Laskowski, .I. S. Proc. Process. Hydrophobic Miner. Fine Coal, UBC-McGill Bi-Annu. Int. Symp. Fundam. Minera. Process, Canadian Inst. of Mining, Metallurgy & Petroleum, 1995, 527-539. The information available in literature on the use of various flocculants, surfactants and oily hydrocarbons on filtration additives does not account for the effect of coal surface properties on fine coal filtration. The tests reported in this paper have been carried out with several coals varying in wettability, hydrophobic latices, semi-hydrophobic flocculants and poiyacrylamide, and various surfacrants and emulsions prepared with these surfactants. 96104603 Effects of CaO, high-temperature treatment, carbon structure, and coal rank on Intrinsic char oxidation rates (&cf_:;Fishnan. R. and Bartholomew, C. H. Energy Fuels, 1996, 10, (3), The low-temperature kinetics of oxidation of Dietz sub-bituminous coal char prepared in a methane flat-flame burner was studied by TGA both in the presence and in the absence of calcium minerals. The examination of mineral/organic matter associa96104604 tions in coal Atkin, B. P. and Clift, D. CoalSci. Technol., 1995, 1, 183-186. Presents preliminary results on a method of study of distribution of mineral matter in coals which is based on low temperature ashing of a polished block and SEM and EDX analysis.
Assessment of coal depositional environment and maturity by reflection FT-IR micro-spectroscopy Ruau, 0. er al., Coal Sci. Technol., 1995, 1, 119-122. Specular reflection micro-IR spectroscopy of vitrinites of Brent (North Sea) coals was used to obtain evidence of major variations of vitrinite reflectance that could not be related only to the maturation process. The combined IR and microlithotype analysis of the vitrinites revealed variations of conditions of coal deposition. Upper delta plain vitrinites were more oxidized and less aliphatic than their lower delta plain homologs.
96/04605 Formation and thermolysis of coal Inclusion compounds with alkali metal hydroxides Kucherenko, V. A. and Zubova, T. I. Z/J. Obshch. Khim., 1995, 65, (8), 1256-1264. (In Russian) Presents a study of intercalation of noncrystalline coal lattice during interaction with aqueous alkali metal hydroxides and thermal destruction of the formed inclusion compounds. It was found that the thermolability of the inclusion compounds increased in the order from LiOH to CsOH.
Biomarkers assemblage in relation to coal rank 96/04596 Czechowski, F. Coal Sci. Technol., 1995, 1, 291-294. The paper describes the extent and degree of coalification assemblages in molecular composition of biomarkers. An average molecular mass of nalkanes and methylphenthrene index can be used for the assessment of the coalification stage as an alternative to vitrinite reflectance.
Fractal approach to coal particle surface 96104606 Zhang, X. et al., Coal Sci. Technol., 1995, 24, (l), 19-22. Discusses the heterogeneous surface and rhe complex pore structure of coals which can be described bv a dimension between two and three. The concept of fractal dimension D’is illustrated in a form adapted to surface problems.
96104597
Changes in molecular biomarker and bulk carbon skeletal parameters of vitrinite concentrates as a function of rank Love, G. D. er al., Energy Fuels, 1996, 10, (l), 149-157. A sequential extraction scheme to differentiate between molecular alkanes and those covalently-bound to the macromolecular structure was applied lo a suite of vitrinite concentrates handpicked from six UK bituminous coals, with a rank corresponding to R, = 0.47-1.32 (at 546 nm). The aim was lo ascertain whether the biomarker maturity indexes (1) were consistent with the measured vitrinite reflectance values and (2) differed markedly for the easily extractable, clathrated, and covalently-bound phases. 96104596 A chemical characterization of maceral fractions from an Australian coking coal Giuliani, J. D. et al., Coal Sci. Technol., 1995, 1, 267-270. The vitrinite and inertinile macerals release qualitative similar organic volatiles on flash pyrolysis with inertinites producing over 50% of that from vitrinites. These findings centre on the reaction of Australian inertinite. The derived data clearlv differentiate vitrinite from inertinite unlike earlier reports which had indicated linear Ire&s/relationships with density. 96104599
The combustible sulfur content of Turkish coals Uzun, D. et al., Coul Sci. Technol., 1995, 24, (l), 79-82. The paper presents the results of total and combustible sulphur determinations and proximate analysis for 30 selected Turkish coals. A recently r’;veloped indirect method is employed for combustible sulphur determinations.
96104600 Depositional sequence feature of Jurassic coal formation in Tu-Ha Basin, China Wu, Y. Shiyou Kanmn Yu Koifa, 1995, 22, (5). 35-39. (In Chinese) Five depositional system tracts are presented and 6 system tract models are proposed. 96104601 Ptolemais Kavouridis, Greek) Presents the and abrasive
330
Determination of the quality of lignite mined in open-pit mines for power generation C. and Galetakis, hl. 0rykros Plouros, 1996, 98, 25-42. (In proximate and ultimate ana!ysis data, heating value, grinding properties, and ash properties of lignite.
Fuel and Energy
Abstracts
September
1996
96104607 Geochemistr of autochthonous and hypautochthonous slderite- cyolomite coal-balls (Foord Seam, Bolsovian, Upper Carboniferous), Nova Scotia, Canada Zodrow, E. L. er al., Int. J. Coal Geol., 1996, 29, (l), 199-216. 96/04606 Geochemistry of copper, zinc and lead in Bulgarian coal deposits Eskenazy, G. God. Sofii. Lini,,. ‘Sv. Klimenf Okhridski’, Geol. -Geogr. Fak., 1995, 87, (l), 584-599. The paper discusses the contents of copper, zinc, and lead in the coals, coaly shales and partings of 14 Bulgarian coal deposits. 96104609
Geological controls on the coal quality of the Mequinenza subbituminous coal deposit, northern Spain Querol, X. er al., I/lr. J. Coal Geol., 1996, 29, (I), 67-91. The results of geological, petrological, geochemical and mineralogical studies, performed to determine the coal-forming paleoenvironmental conditions which gave rise 10 anomalous enrichments in organic sulphur, molybdenum, and uranium in (he Oligocene hlequinenza subbituminous coal deposit of northeaslern Spain, were summarized. 96104610 Geostatistical, spectral and fractal simulation of sulfur distribution in a coal seam Sharma, P. and Ramani, R. V. Publ. Ausrralas, Insr. Min. Metall., 1995, (4), 149-159. Discusses a comparative performance evaluation of gcostatistical, spectral, and fractal methods made for short-scale variability prediction. 96104611 The Grootegeluk formation in the Waterberg Coalfield, South Africa: Facies, palaeoenvironment and thermal history - evidence from organic and elastic matter Faure, K. er al, Im. J. Coal Geol., 1996, 29, (l), 147-186. The Grootegeluk Formation of the Waterberg Coalfield, -7Om thick, consists of relatively thin coal beds interbedded with numerous mudstone and carbonaceous mudstone layers. ?rlaceral analyses of rhe coal seams and the interbedded carbonaceous mudstones showed that vitrinite is the dominant maceral (up to 90 vol%), and inerlinile, liptinite and reactive semifusinite generaly occur in minor proportions.