Effect of thermal and acid treatments on properties of Argentinean low rank coals
The chemical, structural, and textural-morphological features of low rank coals, subbituminous and high volatile bituminous, from Argentinean minefields were examined. Features modifications arising from thermal treatment and mineral matter removal were analyzed and related to chars reactivity for C...
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| Publicado: |
2001
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| Acceso en línea: | Registro en Scopus Handle Registro en la Biblioteca Digital |
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| LEADER | 08194caa a22008057a 4500 | ||
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| 001 | PAPER-1901 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518203114.0 | ||
| 008 | 190411s2001 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-0035353268 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 030 | |a EGYSA | ||
| 100 | 1 | |a Ochoa, J. | |
| 245 | 1 | 0 | |a Effect of thermal and acid treatments on properties of Argentinean low rank coals |
| 260 | |c 2001 | ||
| 270 | 1 | 0 | |m Cukierman, A.L.; Pinmate-Departamento de Industrias, Fac. Ciencias Exactas y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina; email: analea@indust.di.fcen.uba.ar |
| 506 | |2 openaire |e Política editorial | ||
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| 504 | |a Ochoa, J., (1996) Study on Devolatilized Argentinean Coals Gasification, , Ph.D. Thesis. University of Buenos Aires (UBA) | ||
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| 504 | |a Ochoa, J., Cukierman, A.L., Relation between Low Rank Coal Chars Features and Intrinsic Gasification Rates (1999) Proceedings of the 5th Asian Pacific Int. Symp. on Combustion and Energy Utilization, pp. 165-171 | ||
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| 520 | 3 | |a The chemical, structural, and textural-morphological features of low rank coals, subbituminous and high volatile bituminous, from Argentinean minefields were examined. Features modifications arising from thermal treatment and mineral matter removal were analyzed and related to chars reactivity for CO2 gasification. For this purpose, proximate, ultimate, and ash analyses, X-ray diffraction, mercury intrusion porosimetry, adsorption of CO2 (298 K), and scanning electronic microscopy were performed on the original coals as well as on the raw and demineralized char samples. Thermal treatment increased the coals structural ordering and affected pores of any size, leading to bimodal macro-mesopore size distributions and to a pronounced development of micropores. Disarrangement of the structures took place as a result of mineral matter removal altering mainly macroand mesopores, thus producing unimodal distributions. Structural changes occasioned by thermal treatment and demineralization were also reflected in modifications of the surface fractal dimensions estimated from mercury porosimetry data. Reactivity of chars for gasification was significantly affected by demineralization not only due to removal of metals, likely responsible for catalytic effects, but also induced by the structural modifications. Copyright © 2001 Taylor & Francis. |l eng | |
| 536 | |a Detalles de la financiación: Universidad de Buenos Aires | ||
| 536 | |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas | ||
| 536 | |a Detalles de la financiación: Receivd 7eMarch 2000; accepted 22 May 2000. The authors gratefully acknowledge Univrsidead de Buenos Aires (UBA) and Consejo Nacional de Ivesntigaciones Científicas y Técnicas (CONICET - Argentina) for financial support. Address correspondence to Ana Lea Cukierman, Pinmate-Departamento de Industrias, Fac. Ciencias Exactas Y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina. E-mail: analea@ indust.di.fcen.uba .ar | ||
| 593 | |a Pinmate, Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Buenos Aires, Argentina | ||
| 593 | |a Pinmate-Departamento de Industrias, Fac. Ciencias Exactas y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina | ||
| 690 | 1 | 0 | |a COAL CHAR DEMINERALIZATION |
| 690 | 1 | 0 | |a COAL CHAR GASIFICATION |
| 690 | 1 | 0 | |a COAL CHAR PROPERTIES |
| 690 | 1 | 0 | |a FRACTALS |
| 690 | 1 | 0 | |a GAS ADSORPTION |
| 690 | 1 | 0 | |a GASIFICATION |
| 690 | 1 | 0 | |a HEAT TREATMENT |
| 690 | 1 | 0 | |a PORE SIZE |
| 690 | 1 | 0 | |a POROSIMETERS |
| 690 | 1 | 0 | |a SCANNING ELECTRON MICROSCOPY |
| 690 | 1 | 0 | |a VOLATILE ORGANIC COMPOUNDS |
| 690 | 1 | 0 | |a X RAY DIFFRACTION ANALYSIS |
| 690 | 1 | 0 | |a COAL CHAR DEMINERALIZATION |
| 690 | 1 | 0 | |a COAL |
| 700 | 1 | |a Bonelli, P.R. | |
| 700 | 1 | |a Cassanello, M.C. | |
| 700 | 1 | |a Cukierman, A.L. | |
| 773 | 0 | |d 2001 |g v. 23 |h pp. 383-392 |k n. 4 |p Energy Sources |x 00908312 |t Energy Sources | |
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| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_00908312_v23_n4_p383_Ochoa |y Handle |
| 856 | 4 | 0 | |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00908312_v23_n4_p383_Ochoa |y Registro en la Biblioteca Digital |
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