Zobrazeno 1 - 10
of 26
pro vyhledávání: '"C. A. A. Bloomquist"'
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:
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
Autor:
G. R. Dyrkacz, C. A. A. Bloomquist
Publikováno v:
Energy & Fuels. 8:680-689
Coal was subjected to intensive grinding to produce submicrometer particles. This was done in two stages. Ultrafine coal produced by fluid energy mill grinding was further ground in a planetary ball mill or attritor mill. The grinding process was mon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aab9160cfb3483b0e714e8237c82ea79
https://doi.org/10.1021/ef00045a024
https://doi.org/10.1021/ef00045a024
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:
C. A. A. Bloomquist, G. R. Dyrkacz
Publikováno v:
Energy & Fuels. 6:374-386
Continuous flow centrifugation (CFC) methods were used to density fractionate macerals from three different finely ground coals. Moderate to excellent enrichments were produced. However, the purities of the separated fractions were not strainghtforwa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bad6ace3d8e5a8929a63dc41ad977f46
https://doi.org/10.1021/ef00034a006
https://doi.org/10.1021/ef00034a006
Autor:
G. R. Dyrkacz, C. A. A. Bloomquist
Publikováno v:
Energy & Fuels. 6:357-374
The utility of continuous flow centrifugation (CFC) for the separation of coal macerals was investigated. From a systematic study of the various factors affecting the efficiency of the separation, a methodology was developed for routine separations.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9217dc6dd72082a3de8da9c4a15adfc
https://doi.org/10.1021/ef00034a005
https://doi.org/10.1021/ef00034a005
Publikováno v:
Energy & Fuels. 5:155-163
Several sets of microlithotypes derived from channel samples have been separated by density gradient centriguation. Detailed density distribution data and elemental data for the separated vitrinites reveal that there are easily discernible difference
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b1c415081730c848bb1e0d535a1bb89
https://doi.org/10.1021/ef00025a027
https://doi.org/10.1021/ef00025a027
Autor:
Kathleen A. Carrado, Christopher L. Marshall, C. A. A. Bloomquist, D. Wei, Soenke Seifert, L. Xu
Mesoporous synthetic clays (MSCs) are obtained when polymer-containing silicate gels are hydrothermally crystallized to form layered magnesium silicate hectorite clays containing polymers that are incorporated in situ. Polyvinylpyrrolidone of several
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4bd5b09d54263eb2b6c910c8dea86bac
https://doi.org/10.1016/s0167-2991(00)80241-4
https://doi.org/10.1016/s0167-2991(00)80241-4
Autor:
Gary R. Dyrkacz, C. A. A. Bloomquist
Publikováno v:
Energy & Fuels. 14:513-514
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::994d745d81c32e2a14733e7af19b3098
https://doi.org/10.1021/ef9902449
https://doi.org/10.1021/ef9902449