Direct Observation of Carbonate Formation in Partly Hydrated Tricalcium Silicate by Dynamic Nuclear Polarization Enhanced NMR Spectroscopy
Direct Observation of Carbonate Formation in Partly Hydrated Tricalcium Silicate by Dynamic Nuclear Polarization Enhanced NMR Spectroscopy
复制标题
通过动态核极化增强核磁共振波谱直接观察部分水合硅酸三钙中碳酸盐的形成
DOI:
10.1021/acs.jpcc.0c10382
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发表时间:
2021
影响因子:
3.7
通讯作者:
G. Buntkowsky
中科院分区:
文献类型:
--
作者:
V. Klimavicius;H. Hilbig;T. Gutmann;G. Buntkowsky
Solid-state NMR combined with dynamic nuclear polarization (DNP NMR) is used to study hydration processes in tricalcium silicate (Ca3SiO5, abbreviated as C3S) samples. The studied C3S samples have experienced early stage hydration (1–30 h) and slow aging (9 years) processes. The appearance of Q3and Q4lines in the29Si MAS and1H →29Si CP MAS NMR spectra obtained for partly hydrated C3S samples indicated the formation of amorphous silica which corresponds to their carbonation, which was corroborated by complementary FTIR data. Significant DNP signal enhancements obtained for the studied samples allowed to further investigate the C3S carbonation process in detail employing the1H →29Si CP MAS FSLG HETCOR technique. Finally, DNP enhanced1H →13C CP MAS and1H →13C CP MAS FSLG HETCOR techniques enabled to directly observe the formation of carbonate moieties in partly hydrated C3S samples.
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DOI:
10.1039/c6cp02729f
发表时间:
2016
期刊:
Physical chemistry chemical physics : PCCP
影响因子:
--
作者:
S. Sen;D. Kaseman;B. Colas;Dorrit E Jacob;S. Clark
通讯作者:
S. Clark
影响因子:
18.3
作者:
Ni, Qing Zhe;Daviso, Eugenio;Can, Thach V.;Markhasin, Evgeny;Jawla, Sudheer K.;Swager, Timothy M.;Temkin, Richard J.;Herzfeld, Judith;Griffin, Robert G.
通讯作者:
Griffin, Robert G.
影响因子:
7.4
作者:
I. F. S. D. Bosque;M. Martín;I. Sobrados;S. Martínez;M. Blanco
通讯作者:
M. Blanco
影响因子:
2.2
作者:
Erika L. Sesti;Jinlei Cui;S. Hayes;M. Conradi
通讯作者:
M. Conradi
影响因子:
1
作者:
B. Kumari;M. Brodrecht;T. Gutmann;H. Breitzke;G. Buntkowsky
通讯作者:
G. Buntkowsky