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Factors Affecting the Removal of Ammonia from Air on Carbonaceous Materials - Camille Petit
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ISBN: 9781461433934

ID: 9781461433934

Investigation of Reactive Adsorption Mechanism Air pollution related to the release of industrial toxic gases, represents one of the main concerns of our modern world owing to its detrimental effect on the environment. To tackle this growing issue, efficient ways to reduce/control the release of pollutants are required. Adsorption of gases on porous materials appears as a potential solution. However, the physisorption of small molecules of gases such as ammonia is limited at ambient conditions. For their removal, adsorbents providing strong adsorption forces must be used/developed.    In this study, new carbon-based materials are prepared and tested for ammonia adsorption at ambient conditions. Characterization of the adsorbents` texture and surface chemistry is performed before and after exposure to ammonia to identify the features responsible for high adsorption capacity and for controlling the mechanisms of retention. The characterization techniques include: nitrogen adsorption, thermal analysis, potentiometric titration, FT-IR spectroscopy, X-ray diffraction, Energy Dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy and Electron Microscopy.    The results obtained indicate that ammonia removal is governed by the adsorbent`s surface chemistry. On the contrary, porosity (and thus physisorption) plays a secondary role in this process, unless strong dispersive forces are provided by the adsorbent. The surface chemistry features responsible for the enhanced ammonia adsorption include the presence of oxygen-(carboxyl, hydroxyl, epoxy) and sulfur- (sulfonic) containing groups. Metallic species improve the breakthrough capacity as well as they lead to the formation of Lewis acid-base interactions, hydrogen-bonding or complexation. In addition to the latter three mechanisms, ammonia is retained on the adsorbent surface via Brønsted acid-base interactions or via specific reactions with the adsorbent`s functionalities leading to the incorporation of ammonia into the adsorbent`s matrix. Another mechanism involves dissolution of ammonia in water when moisture is present in the system. Even though this process increases the breakthrough capacity of a material, it provides rather weak retention forces since ammonia dissolved in water is easily desorbed from the adsorbent`s surface. Factors Affecting the Removal of Ammonia from Air on Carbonaceous Materials: Air pollution related to the release of industrial toxic gases, represents one of the main concerns of our modern world owing to its detrimental effect on the environment. To tackle this growing issue, efficient ways to reduce/control the release of pollutants are required. Adsorption of gases on porous materials appears as a potential solution. However, the physisorption of small molecules of gases such as ammonia is limited at ambient conditions. For their removal, adsorbents providing strong adsorption forces must be used/developed.    In this study, new carbon-based materials are prepared and tested for ammonia adsorption at ambient conditions. Characterization of the adsorbents` texture and surface chemistry is performed before and after exposure to ammonia to identify the features responsible for high adsorption capacity and for controlling the mechanisms of retention. The characterization techniques include: nitrogen adsorption, thermal analysis, potentiometric titration, FT-IR spectroscopy, X-ray diffraction, Energy Dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy and Electron Microscopy.    The results obtained indicate that ammonia removal is governed by the adsorbent`s surface chemistry. On the contrary, porosity (and thus physisorption) plays a secondary role in this process, unless strong dispersive forces are provided by the adsorbent. The surface chemistry features responsible for the enhanced ammonia adsorption include the presence of oxygen-(carboxyl, hydroxyl, epoxy) and sulfur- (sulfonic) containing groups. Metallic species improve the breakthrough capacity as well as they lead to the formation of Lewis acid-base interactions, hydrogen-bonding or complexation. In addition to the latter three mechanisms, ammonia is retained on the adsorbent surface via Brønsted acid-base interactions or via specific reactions with the adsorbent`s functionalities leading to the incorporation of ammonia into the adsorbent`s matrix. Another mechanism involves dissolution of ammonia in water when moisture is present in the system. Even though this process increases the breakthrough capacity of a material, it provides rather weak retention forces since ammonia dissolved in water is easily desorbed from the adsorbent`s surface. C Analytical Chemistry Nanochemistry Environmental Chemistry Atmospheric Protection/Air Quality Control/Air Pollution Characterization and Evaluation of Materials Chemistry and Materials Science, Springer New York

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Factors Affecting the Removal of Ammonia from Air on Carbonaceous Materials - Camille Petit
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3, ISBN: 9781461433934

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Air pollution related to the release of industrial toxic gases, represents one of the main concerns of our modern world owing to its detrimental effect on the environment. To tackle this growing issue, efficient ways to reduce/control the release of pollutants are required. Adsorption of gases on porous materials appears as a potential solution. However, the physisorption of small molecules of gases such as ammonia is limited at ambient conditions. For their removal, adsorbents providing strong Air pollution related to the release of industrial toxic gases, represents one of the main concerns of our modern world owing to its detrimental effect on the environment. To tackle this growing issue, efficient ways to reduce/control the release of pollutants are required. Adsorption of gases on porous materials appears as a potential solution. However, the physisorption of small molecules of gases such as ammonia is limited at ambient conditions. For their removal, adsorbents providing strong adsorption forces must be used/developed. In this study, new carbon-based materials are prepared and tested for ammonia adsorption at ambient conditions. Characterization of the adsorbents' texture and surface chemistry is performed before and after exposure to ammonia to identify the features responsible for high adsorption capacity and for controlling the mechanisms of retention. The characterization techniques include: nitrogen adsorption, thermal analysis, potentiometric titration, FT-IR spectroscopy, X-ray diffraction, Energy Dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy and Electron Microscopy. The results obtained indicate that ammonia removal is governed by the adsorbent's surface chemistry. On the contrary, porosity (and thus physisorption) plays a secondary role in this process, unless strong dispersive forces are provided by the adsorbent. The surface chemistry features responsible for the enhanced ammonia adsorption include the presence of oxygen-(carboxyl, hydroxyl, epoxy) and sulfur- (sulfonic) containing groups. Metallic species improve the breakthrough capacity as well as they lead to the formation of Lewis acid-base interactions, hydrogen-bonding or complexation. In addition to the latter three mechanisms, ammonia is retained on the adsorbent surface via Br0nsted acid-base interactions or via specific reactions with the adsorbent's functionalities leading to the incorporation of ammonia into the adsorbent's matrix. Another mechanism in Nanostructures, Other Sciences, Factors Affecting the Removal of Ammonia from Air on Carbonaceous Materials~~ Camille Petit~~Nanostructures~~Other Sciences~~9781461433934, en, Factors Affecting the Removal of Ammonia from Air on Carbonaceous Materials, Camille Petit, 9781461433934, Springer, 03/07/2012, , , , Springer, 03/07/2012

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Factors Affecting the Removal of Ammonia from Air on Carbonaceous Materials - Camille Petit
Vergriffenes Buch, derzeit bei uns nicht verfügbar.
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Camille Petit:
Factors Affecting the Removal of Ammonia from Air on Carbonaceous Materials - neues Buch

ISBN: 9781461433934

ID: 125875089

Air pollution related to the release of industrial toxic gases, represents one of the main concerns of our modern world owing to its detrimental effect on the environment. To tackle this growing issue, efficient ways to reduce/control the release of pollutants are required. Adsorption of gases on porous materials appears as a potential solution. However, the physisorption of small molecules of gases such as ammonia is limited at ambient conditions. For their removal, adsorbents providing strong adsorption forces must be used/developed. In this study, new carbon-based materials are prepared and tested for ammonia adsorption at ambient conditions. Characterization of the adsorbents texture and surface chemistry is performed before and after exposure to ammonia to identify the features responsible for high adsorption capacity and for controlling the mechanisms of retention. The characterization techniques include: nitrogen adsorption, thermal analysis, potentiometric titration, FT-IR spectroscopy, X-ray diffraction, Energy Dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy and Electron Microscopy. The results obtained indicate that ammonia removal is governed by the adsorbents surface chemistry. On the contrary, porosity (and thus physisorption) plays a secondary role in this process, unless strong dispersive forces are provided by the adsorbent. The surface chemistry features responsible for the enhanced ammonia adsorption include the presence of oxygen-(carboxyl, hydroxyl, epoxy) and sulfur- (sulfonic) containing groups. Metallic species improve the breakthrough capacity as well as they lead to the formation of Lewis acid-base interactions, hydrogen-bonding or complexation. In addition to the latter three mechanisms, ammonia is retained on the adsorbent surface via Brønsted acid-base interactions or via specific reactions with the adsorbents functionalities leading to the incorporation of ammonia into the adsorbents matrix. Another mechanism involves dissolution of ammonia in water when moisture is present in the system. Even though this process increases the breakthrough capacity of a material, it provides rather weak retention forces since ammonia dissolved in water is easily desorbed from the adsorbents surface. Investigation of Reactive Adsorption Mechanism eBook eBooks>Fremdsprachige eBooks>Englische eBooks>Sach- & Fachthemen>Chemie, Springer New York

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Factors Affecting the Removal of Ammonia from Air on Carbonaceous Materials - Camille Petit
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2012, ISBN: 9781461433934

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Investigation of Reactive Adsorption Mechanism, [ED: 1], Auflage, eBook Download (PDF), eBooks, [PU: Springer-Verlag]

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Factors Affecting the Removal of Ammonia from Air on Carbonaceous Materials - Camille Petit
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Camille Petit:
Factors Affecting the Removal of Ammonia from Air on Carbonaceous Materials - neues Buch

2012, ISBN: 9781461433934

ID: 23796418

Investigation of Reactive Adsorption Mechanism, 2012, eBook Download (PDF), eBooks, [PU: Springer New York]

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Details zum Buch
Factors Affecting the Removal of Ammonia from Air on Carbonaceous Materials
Autor:

Camille Petit

Titel:

Factors Affecting the Removal of Ammonia from Air on Carbonaceous Materials

ISBN-Nummer:

Detailangaben zum Buch - Factors Affecting the Removal of Ammonia from Air on Carbonaceous Materials


EAN (ISBN-13): 9781461433934
ISBN (ISBN-10): 1461433932
Erscheinungsjahr: 2012
Herausgeber: Springer US
118 Seiten
Sprache: eng/Englisch

Buch in der Datenbank seit 17.10.2012 15:28:02
Buch zuletzt gefunden am 05.06.2017 14:32:13
ISBN/EAN: 9781461433934

ISBN - alternative Schreibweisen:
1-4614-3393-2, 978-1-4614-3393-4


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