| Arundo donax cane as a precursor for activated carbons preparation by phosphoric acid activation. | |
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MedLine Citation:
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PMID: 12056497 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Canes from Arundo donax, a herbaceous rapid-growing plant, were used as precursor for activated carbon preparation by phosphoric acid activation under a self-generated atmosphere. The influence of the carbonization temperature in the range 400-550 degrees C and of the weight ratio phosphoric acid to precursor (R = 1.5-2.5) on the developed porous structure of the resulting carbons was studied for 1 h of carbonization time. Surface properties of the activated carbons were dependent on a combined effect of the conditions employed. Carbons developed either with R = 1.5 over the range 400-500 degrees C, or with R = 2 at 500 degrees C exhibited surface areas of around 1100 m2/g, the latter conditions promoting a larger pore volume and enhanced mesoporous character. For both ratios, temperature above 500 degrees C led to reduction in porosity development. A similar effect was found for the highest ratio (R = 2.5) and 500 degrees C. The influence of carrying out the carbonization either for times shorter than 1 h or under flowing N2 was also examined at selected conditions (R = 2, 500 degrees C). Shorter times induced increase in the surface area (approximately 1300 m2/g), yielding carbons with smaller mean pore radius. Activated carbons obtained under flowing N2 possessed predominant microporous structures and larger ash contents than the samples derived in the self-generated atmosphere. |
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Authors:
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T Vernersson; P R Bonelli; E G Cerrella; A L Cukierman |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Bioresource technology Volume: 83 ISSN: 0960-8524 ISO Abbreviation: Bioresour. Technol. Publication Date: 2002 Jun |
Date Detail:
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Created Date: 2002-06-11 Completed Date: 2002-12-06 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9889523 Medline TA: Bioresour Technol Country: England |
Other Details:
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Languages: eng Pagination: 95-104 Citation Subset: IM |
Affiliation:
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Programa de Investigación y Desarrollo de Fuentes Alternativas de Materias Primas y Energía--PINMATE, Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Guiraldes, Ciudad Universitaria, Argentina. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adsorption Biotechnology / methods Carbon / chemistry Carbon Compounds, Inorganic / analysis*, chemistry Kinetics Microscopy, Electron, Scanning Nitrogen / chemistry Oxygen Phosphoric Acids / chemistry* Poaceae / chemistry* Pressure Temperature Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Carbon Compounds, Inorganic; 0/Phosphoric Acids; 7440-44-0/Carbon; 7664-38-2/phosphoric acid; 7727-37-9/Nitrogen; 7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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