Arundo donax cane as a precursor for activated carbons preparation by phosphoric acid activation
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°C and of the weight ratio phosphoric acid to precurs...
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2002
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09608524_v83_n2_p95_Vernersson http://hdl.handle.net/20.500.12110/paper_09608524_v83_n2_p95_Vernersson |
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paper:paper_09608524_v83_n2_p95_Vernersson2023-06-08T15:57:46Z Arundo donax cane as a precursor for activated carbons preparation by phosphoric acid activation Activated carbons Arundo donax Phosphoric acid activation Pore structure development Carbon Carbonization Phosphoric acid Porosity Surface properties Precursors Biotechnology activated carbon nitrogen phosphoric acid activated carbon phosphonic acid ester porosity surface property vegetation article chemical reaction molecular weight particle size plant porosity priority journal synthesis temperature sensitivity Adsorption Biotechnology Carbon Carbon Compounds, Inorganic Kinetics Microscopy, Electron, Scanning Nitrogen Oxygen Phosphoric Acids Poaceae Pressure Temperature Time Factors Arundinaria Arundo donax Fraxinus 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°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°C, or with R = 2 at 500°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°C led to reduction in porosity development. A similar effect was found for the highest ratio (R = 2.5) and 500°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°C). Shorter times induced increase in the surface area (∼ 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. © 2002 Elsevier Science Ltd. All rights reserved. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09608524_v83_n2_p95_Vernersson http://hdl.handle.net/20.500.12110/paper_09608524_v83_n2_p95_Vernersson |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Activated carbons Arundo donax Phosphoric acid activation Pore structure development Carbon Carbonization Phosphoric acid Porosity Surface properties Precursors Biotechnology activated carbon nitrogen phosphoric acid activated carbon phosphonic acid ester porosity surface property vegetation article chemical reaction molecular weight particle size plant porosity priority journal synthesis temperature sensitivity Adsorption Biotechnology Carbon Carbon Compounds, Inorganic Kinetics Microscopy, Electron, Scanning Nitrogen Oxygen Phosphoric Acids Poaceae Pressure Temperature Time Factors Arundinaria Arundo donax Fraxinus |
| spellingShingle |
Activated carbons Arundo donax Phosphoric acid activation Pore structure development Carbon Carbonization Phosphoric acid Porosity Surface properties Precursors Biotechnology activated carbon nitrogen phosphoric acid activated carbon phosphonic acid ester porosity surface property vegetation article chemical reaction molecular weight particle size plant porosity priority journal synthesis temperature sensitivity Adsorption Biotechnology Carbon Carbon Compounds, Inorganic Kinetics Microscopy, Electron, Scanning Nitrogen Oxygen Phosphoric Acids Poaceae Pressure Temperature Time Factors Arundinaria Arundo donax Fraxinus Arundo donax cane as a precursor for activated carbons preparation by phosphoric acid activation |
| topic_facet |
Activated carbons Arundo donax Phosphoric acid activation Pore structure development Carbon Carbonization Phosphoric acid Porosity Surface properties Precursors Biotechnology activated carbon nitrogen phosphoric acid activated carbon phosphonic acid ester porosity surface property vegetation article chemical reaction molecular weight particle size plant porosity priority journal synthesis temperature sensitivity Adsorption Biotechnology Carbon Carbon Compounds, Inorganic Kinetics Microscopy, Electron, Scanning Nitrogen Oxygen Phosphoric Acids Poaceae Pressure Temperature Time Factors Arundinaria Arundo donax Fraxinus |
| description |
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°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°C, or with R = 2 at 500°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°C led to reduction in porosity development. A similar effect was found for the highest ratio (R = 2.5) and 500°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°C). Shorter times induced increase in the surface area (∼ 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. © 2002 Elsevier Science Ltd. All rights reserved. |
| title |
Arundo donax cane as a precursor for activated carbons preparation by phosphoric acid activation |
| title_short |
Arundo donax cane as a precursor for activated carbons preparation by phosphoric acid activation |
| title_full |
Arundo donax cane as a precursor for activated carbons preparation by phosphoric acid activation |
| title_fullStr |
Arundo donax cane as a precursor for activated carbons preparation by phosphoric acid activation |
| title_full_unstemmed |
Arundo donax cane as a precursor for activated carbons preparation by phosphoric acid activation |
| title_sort |
arundo donax cane as a precursor for activated carbons preparation by phosphoric acid activation |
| publishDate |
2002 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09608524_v83_n2_p95_Vernersson http://hdl.handle.net/20.500.12110/paper_09608524_v83_n2_p95_Vernersson |
| _version_ |
1768542229414019072 |