Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Gary R. Dyrkacz"'
Autor:
C. A. A. Bloomquist, Gary R. Dyrkacz
Publikováno v:
Energy & Fuels. 15:1403-1408
Maceral fractions derived from density separations of six coals were extracted at room temperature in carbon disulfide/N-methylpyrrolidone based media. Vitrinite was found to have the highest extract yield. Both liptinites and inertinites exhibited l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a24b659836f1b35e0b122330f98d10d6
https://doi.org/10.1021/ef0100350
https://doi.org/10.1021/ef0100350
Autor:
Gary R. Dyrkacz, C. A. A. Bloomquist
Publikováno v:
Energy & Fuels. 15:1409-1413
Different organic bases, primarily with carbon disulfide as co-solvent, were used to probe the nature of the binary solvent extractions of Upper Freeport coal. The effect of tetracyanoethylene addition on extract yields was also examined. Amides and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f4b9ee480bed34e5b34bf23d4ba361c
https://doi.org/10.1021/ef010036s
https://doi.org/10.1021/ef010036s
Autor:
Gary R. Dyrkacz
Publikováno v:
Energy & Fuels. 15:918-929
The solvent properties of the binary solvent carbon disulfide/N-methylpyrrolidone (NMP) have been investigated using density, viscosity, solvatochromic, and FTIR measurements. The excess molar volumes were negative throughout the entire range of CS2/
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9450c802e7ceecd3c64a06a8c40676f6
https://doi.org/10.1021/ef010003c
https://doi.org/10.1021/ef010003c
Autor:
C. A. A. Bloomquist, Gary R. Dyrkacz
Publikováno v:
Energy & Fuels. 13:40-52
Infrared spectroscopy was used to examine the O-alkylation and O-acetylation of two bituminous coals with a series of reagents. Two related aspects were investigated: We attempted to apply quantit...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8761050dd776ff7eba9413e0b52d60c0
https://doi.org/10.1021/ef980062z
https://doi.org/10.1021/ef980062z
Publikováno v:
Separation Science and Technology. 32:2289-2307
The conditions necessary for a laboratory-scale separation of the premaceral constituent of peat (i.e., the precursor to coal) are investigated. The method used is an isopycnic density centrifugation (DGC) technique aimed at isolating pure premaceral
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3da32398d1ebbad99bbbe8372299c478
https://doi.org/10.1080/01496399708000769
https://doi.org/10.1080/01496399708000769
Publikováno v:
Energy & Fuels. 10:849-854
Two fluidized catalytic cracking catalysts were separated using isopycnic density gradient methods. For each catalyst, both the fresh and equilibrium materials were separated. Quite different density distributions were found, not only between the equ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af4a937bc033443331bd0bf11db79c74
https://doi.org/10.1021/ef9502618
https://doi.org/10.1021/ef9502618
Publikováno v:
Energy & Fuels. 7:655-660
Centrifugal sink/float and continuous flow centrifuge separations were conducted on a −100-mesh high-volatile bituminous coal. Using CsCl/Brij-35 as the separation media, float and sink phases could be enriched to greater than 75% pure phases. This
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5059ac1c42f4c59cfb73a6b110f150b
https://doi.org/10.1021/ef00041a015
https://doi.org/10.1021/ef00041a015
Autor:
Gary R. Dyrkacz, Ljiljana Ruscic
Publikováno v:
Energy & Fuels. 6:743-752
Multiple sink/float density fractionations were done on three different coal samples. Density gradient centrifugation methods were used to monitor the results of the separations. The purity of a float or sink phase was directly tied to the density di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0dde871fd8be43a611d46514722e993
https://doi.org/10.1021/ef00036a007
https://doi.org/10.1021/ef00036a007
Publikováno v:
Energy & Fuels. 6:720-742
The process of maceral separation using sink/float centrifugal methods was investigated for several bituminous coals with particle sizes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78a32afdc739b240b1bcecbcf1d20c70
https://doi.org/10.1021/ef00036a006
https://doi.org/10.1021/ef00036a006
Publikováno v:
Journal of Analytical and Applied Pyrolysis. 20:151-159
Two Sydney Basin Bulli coals with differing coking properties are compared and characterised by thermal desorption and pyrolysis-GC/MS analyses. From the TD-GC/MS data a series of maturity indicators have been calculated and from the MPI-1 the calcul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7622a53cdd52df4168c769c7dc1933cd
https://doi.org/10.1016/0165-2370(91)80069-k
https://doi.org/10.1016/0165-2370(91)80069-k