hendrik meuzelaar | University of Utah (original) (raw)
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Papers by hendrik meuzelaar
Energy Fuels, Apr 30, 2002
Field Analytical Chemistry & Technology, 1998
Field Analytical Chemistry & Technology, 1999
Field Analytical Chemistry & Technology, 2001
Field Analytical Chemistry & Technology, 1999
Field Analytical Chemistry & Technology, 1998
Field Analytical Chemistry & Technology, 1999
Field Analytical Chemistry & Technology, 2001
Computer-Enhanced Analytical Spectroscopy, 1987
Fuel, 1988
ABSTRACT Two high volatile bituminous coals (Upper Freeport and Hiawatha seams), a subbituminous ... more ABSTRACT Two high volatile bituminous coals (Upper Freeport and Hiawatha seams), a subbituminous coal (Adaville seam) and a lignite (Anderson seam) were used to investigate the effect of low temperature air oxidation (‘weathering’) on the yield and composition of vacuum pyrolysis products. Fresh coal samples were exposed to air at 80 and 100°C for up to 10 days under controlled laboratory conditions. Curie-point pyrolysis mass spectrometry combined with computerized data analysis was applied to study the weathering induced changes in a series of samples weathered for various lengths of time. It was found that the abundance of small oxygen-containing molecules such as carbon monoxide, carbon dioxide and aliphatic carboxylic acids increased in the pyrolysate of all samples, whereas phenols and dihydroxybenzenes showed decreased yields, especially in the two lowest rank coals. Besides phenols, alkylnaphthalenes and alkyltetralins showed decreased abundances in the pyrolysis mass spectra of the two high volatile bituminous coals. An attempt is made to explain the difference in pyrolysis patterns observed before and after weathering experiments in terms of underlying structural changes.
Ind Eng Chem Res, 1990
This paper reports on low-voltage electron ionization mass spectrometry (LV-EIMS) performed on 25... more This paper reports on low-voltage electron ionization mass spectrometry (LV-EIMS) performed on 25 fossil fuel samples (21 coals, 2 oil shales, 1 tar sand, and 1 coal resin concentrate) and their respective pyrolysis liquids prepared at Morgantown Energy Technology Center (METC) by means of a fixed-bed reactor. By using principal component analysis, the tar evaporation spectra and the solid fuel
Analytical Chemistry, 1991
Energy Fuels, Apr 30, 2002
Field Analytical Chemistry & Technology, 1998
Field Analytical Chemistry & Technology, 1999
Field Analytical Chemistry & Technology, 2001
Field Analytical Chemistry & Technology, 1999
Field Analytical Chemistry & Technology, 1998
Field Analytical Chemistry & Technology, 1999
Field Analytical Chemistry & Technology, 2001
Computer-Enhanced Analytical Spectroscopy, 1987
Fuel, 1988
ABSTRACT Two high volatile bituminous coals (Upper Freeport and Hiawatha seams), a subbituminous ... more ABSTRACT Two high volatile bituminous coals (Upper Freeport and Hiawatha seams), a subbituminous coal (Adaville seam) and a lignite (Anderson seam) were used to investigate the effect of low temperature air oxidation (‘weathering’) on the yield and composition of vacuum pyrolysis products. Fresh coal samples were exposed to air at 80 and 100°C for up to 10 days under controlled laboratory conditions. Curie-point pyrolysis mass spectrometry combined with computerized data analysis was applied to study the weathering induced changes in a series of samples weathered for various lengths of time. It was found that the abundance of small oxygen-containing molecules such as carbon monoxide, carbon dioxide and aliphatic carboxylic acids increased in the pyrolysate of all samples, whereas phenols and dihydroxybenzenes showed decreased yields, especially in the two lowest rank coals. Besides phenols, alkylnaphthalenes and alkyltetralins showed decreased abundances in the pyrolysis mass spectra of the two high volatile bituminous coals. An attempt is made to explain the difference in pyrolysis patterns observed before and after weathering experiments in terms of underlying structural changes.
Ind Eng Chem Res, 1990
This paper reports on low-voltage electron ionization mass spectrometry (LV-EIMS) performed on 25... more This paper reports on low-voltage electron ionization mass spectrometry (LV-EIMS) performed on 25 fossil fuel samples (21 coals, 2 oil shales, 1 tar sand, and 1 coal resin concentrate) and their respective pyrolysis liquids prepared at Morgantown Energy Technology Center (METC) by means of a fixed-bed reactor. By using principal component analysis, the tar evaporation spectra and the solid fuel
Analytical Chemistry, 1991