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Adsorption of Low-Molecular-Weight Amines in Aqueous Solutions to Zeolites: An Approach to Impeding Low-Molecular-Weight Amines from Regenerating N-Nitrosamines
- Source :
- Industrial & Engineering Chemistry Research. 56:12024-12031
- Publication Year :
- 2017
- Publisher :
- American Chemical Society (ACS), 2017.
-
Abstract
- The combined effects of the porous structure, acidity, and ion-exchange properties of zeolites and the structures of the degradation products of nitrosamines in aqueous solution on adsorption were evaluated. The degradation products of nitrosamines including the aliphatic low-molecular-weight amines methylamine, dimethylamine, ethylamine, and diethylamine and the aromatic amine aniline all exhibited significant adsorption affinities to HZSM-5 zeolites, and aliphatic low-molecular-weight amines exhibited much greater adsorption affinities to HY zeolite than to NaY and HZSM-5 zeolites, but aromatic amines exhibited little adsorption affinity to HY and NaY zeolites. The results of the pH-dependency experiments further indicated that the acidity and polarity of the adsorbates and the acidity of the adsorbents play a combinational role in determining the significance of the adsorption interactions between low-molecular-weight amines in aqueous solution and zeolites. We propose that the acid–base and electrosta...
- Subjects :
- chemistry.chemical_classification
Diethylamine
Aqueous solution
General Chemical Engineering
Inorganic chemistry
Aromatic amine
General Chemistry
010501 environmental sciences
010402 general chemistry
01 natural sciences
Industrial and Manufacturing Engineering
0104 chemical sciences
chemistry.chemical_compound
Adsorption
Aniline
chemistry
Organic chemistry
Ethylamine
Zeolite
Dimethylamine
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 15205045 and 08885885
- Volume :
- 56
- Database :
- OpenAIRE
- Journal :
- Industrial & Engineering Chemistry Research
- Accession number :
- edsair.doi...........51de4e1a05271edb6aedb7312ecbe99f