Oxygen surface groups analysis of carbonaceous samples pyrolysed at low temperature
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F18%3AA1901TYB" target="_blank" >RIV/61988987:17310/18:A1901TYB - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0008622318303191#cebib0010" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0008622318303191#cebib0010</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.carbon.2018.03.067" target="_blank" >10.1016/j.carbon.2018.03.067</a>
Alternative languages
Result language
angličtina
Original language name
Oxygen surface groups analysis of carbonaceous samples pyrolysed at low temperature
Original language description
The basis of recently developed quantitative TG-MS analysis was used for the evaluation of TPD-MS measurements in order to characterize the changes in the surface chemistry of carbon cryogels after the oxidation/activation treatment. This methodology was applied to the analysis of partially pyrolysed carbon cryogels (400?°C), which were oxidized/activated in four different ways (phosphoric acid, Fenton like reaction, ammonium persulfate with sulfuric acid and nitric acid with hydrogen peroxide). The quantitative TPD-MS evaluation enables analysis of all the evolved gases during the sample heating (without the calibration of all gases) and distinguishes the carbonization process from the decomposition of the more thermally stable oxygen surface groups (analysis of the effect of oxidation/activation reagents). The activation by H3PO4 results in the hydrolysis and esterification of anhydrides, lactones and phenols and creation of phosphoric acid esters (C-O-P), which decompose into C3-P=O linkages with the CO evolution. All the oxidation treatments had a similar effect on the surface chemistry. The amounts of carboxylic acids and anhydrides increased significantly, while the amount of lactones and phenol groups decreased (oxidized into carbonyls). Application of TG-MS fundamentals to the evaluation of TPD-MS profiles from a wide range of samples allows determining all the gaseous products.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10406 - Analytical chemistry
Result continuities
Project
<a href="/en/project/LO1208" target="_blank" >LO1208: Theoretical aspects of Energetic treatment of Waste and Environment Protection against negative impacts</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Carbon
ISSN
0008-6223
e-ISSN
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Volume of the periodical
134
Issue of the periodical within the volume
March 2018
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
9
Pages from-to
255-263
UT code for WoS article
000433244900028
EID of the result in the Scopus database
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