Hydrodechlorination of Different Chloroaromatic Compounds at Room Temperature and Ambient Pressure-Differences in Reactivity of Cu- and Ni-Based Al Alloys in an Alkaline Aqueous Solution
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F20%3A39916603" target="_blank" >RIV/00216275:25310/20:39916603 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.mdpi.com/2073-4344/10/9/994" target="_blank" >https://www.mdpi.com/2073-4344/10/9/994</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/catal10090994" target="_blank" >10.3390/catal10090994</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Hydrodechlorination of Different Chloroaromatic Compounds at Room Temperature and Ambient Pressure-Differences in Reactivity of Cu- and Ni-Based Al Alloys in an Alkaline Aqueous Solution
Popis výsledku v původním jazyce
It is well known that the hydrodechlorination (HDC) of chlorinated aromatic contaminants in aqueous effluents enables a significant increase in biodegradability. HDC consumes a low quantity of reactants producing corresponding non-chlorinated and much more biodegradable organic compounds. Two commonly used precious metals free Al alloys (Raney Al-Ni and Devarda's Al-Cu-Zn) were compared in reductive action in an alkaline aqueous solution. Raney Al-Ni alloy was examined as a universal and extremely effective HDC agent in a diluted aqueous NaOH solution. The robustness of Raney Al-Ni activity is illustrated in the case of HDC of polychlorinated aromatic compounds mixture in actual waste water. In contrast, Devarda's Al-Cu-Zn alloy was approved as much less active for HDC of the tested chlorinated aromatic compounds, but with a surprisingly high selectivity on cleavage of C-Cl bonds in the meta and sometimes the ortho position in chlorinated aniline and sometimes chlorinated phenol structures. The reaction of both tested alloys with chlorinated aromatic compounds in the aqueous NaOH solution is accompanied by dissolution of aluminum. Dissolved Al in the alkaline HDC reaction mixture is very useful for subsequent treatment of HDC products by coagulation and flocculation of Al(OH)(3) caused by simple neutralization of the alkaline aqueous phase after the HDC reaction.
Název v anglickém jazyce
Hydrodechlorination of Different Chloroaromatic Compounds at Room Temperature and Ambient Pressure-Differences in Reactivity of Cu- and Ni-Based Al Alloys in an Alkaline Aqueous Solution
Popis výsledku anglicky
It is well known that the hydrodechlorination (HDC) of chlorinated aromatic contaminants in aqueous effluents enables a significant increase in biodegradability. HDC consumes a low quantity of reactants producing corresponding non-chlorinated and much more biodegradable organic compounds. Two commonly used precious metals free Al alloys (Raney Al-Ni and Devarda's Al-Cu-Zn) were compared in reductive action in an alkaline aqueous solution. Raney Al-Ni alloy was examined as a universal and extremely effective HDC agent in a diluted aqueous NaOH solution. The robustness of Raney Al-Ni activity is illustrated in the case of HDC of polychlorinated aromatic compounds mixture in actual waste water. In contrast, Devarda's Al-Cu-Zn alloy was approved as much less active for HDC of the tested chlorinated aromatic compounds, but with a surprisingly high selectivity on cleavage of C-Cl bonds in the meta and sometimes the ortho position in chlorinated aniline and sometimes chlorinated phenol structures. The reaction of both tested alloys with chlorinated aromatic compounds in the aqueous NaOH solution is accompanied by dissolution of aluminum. Dissolved Al in the alkaline HDC reaction mixture is very useful for subsequent treatment of HDC products by coagulation and flocculation of Al(OH)(3) caused by simple neutralization of the alkaline aqueous phase after the HDC reaction.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10511 - Environmental sciences (social aspects to be 5.7)
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2020
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Catalysts
ISSN
2073-4344
e-ISSN
—
Svazek periodika
10
Číslo periodika v rámci svazku
9
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
21
Strana od-do
994
Kód UT WoS článku
000581326700001
EID výsledku v databázi Scopus
2-s2.0-85093883743