globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.jcou.2017.02.007
Scopus ID: 2-s2.0-85015205837
NMR spectroscopic investigations into the mechanism of absorption and desorption of CO2 by (tris-pyridyl)amine Zn complexes
Author: Arstad B.; Blom R.; Didriksen T.; Frøseth M.; Heyn R.H.; Oien-Odegaard S.
Source Publication: Journal of CO2 Utilization
ISSN: 22129820
Publishing Year: 2017
Volume: 19
pages begin: 58
pages end: 67
Language: 英语
Scopus Keyword: Absorption spectroscopy ; Carboxylation ; Desorption ; Nuclear magnetic resonance spectroscopy ; Solutions ; Zinc ; Absorption and desorptions ; Aqueous chemistry ; Atmospheric CO ; Decarboxylation process ; Dynamic equilibria ; NMR experiments ; Spectroscopic investigations ; Zinc carbonates ; Carbon dioxide
English Abstract: The Zn complex [(NN3)Zn(OH)]2(NO3)2 (1(NO3)2, NN3 = tris(2-pyridylmethyl)amine) reacts with atmospheric CO2 to form a zinc carbonate species {[(NN3)Zn]3CO3}(NO3)4 (2(NO3)4), isolable as a crystalline product from organic solvents. The aqueous chemistry of the CO2 absorption and desorption processes for 1(NO3)2 and the presumed end-point of the reaction, 2(NO3)4, was unknown and hence investigated by NMR spectroscopy. Carboxylation of aqueous solutions of both 1(NO3)2 and 2(NO3)4 form products that can best be described as mixtures of monomeric [(NN3)ZnCO3H]+ and dimeric {[(NN3)Zn]2CO3}2+, which are in a dynamic equilibrium on the NMR time-scale. No evidence for the involvement of 2(NO3)4 in the carboxylation-decarboxylation processes is observed. Rather, the data suggest that 2(NO3)4 provides [(NN3)Zn(OH2)]2+ that does not participate in the CO2 chemistry upon warming. A mechanism that is supported by NMR experiments and that accounts for the formation of [(NN3)ZnCO3H]+ and {[(NN3)Zn]2CO3}2+ from both ends of the reaction manifold is proposed. © 2017 Elsevier Ltd. All rights reserved.
Citation statistics:
Document Type: 期刊论文
Appears in Collections:影响、适应和脆弱性

Files in This Item:

There are no files associated with this item.

Recommended Citation:
Arstad B.,Blom R.,Didriksen T.,et al. NMR spectroscopic investigations into the mechanism of absorption and desorption of CO2 by (tris-pyridyl)amine Zn complexes[J]. Journal of CO2 Utilization,2017-01-01,19
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Arstad B.]'s Articles
[Blom R.]'s Articles
[Didriksen T.]'s Articles
Similar articles in Baidu Scholar
[Arstad B.]'s Articles
[Blom R.]'s Articles
[Didriksen T.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Arstad B.]‘s Articles
[Blom R.]‘s Articles
[Didriksen T.]‘s Articles
Related Copyright Policies
所有评论 (0)

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.