Al-substituted tobermorite-The coordination of aluminum as revealed by solid-state 27Al magic angle spinning (MAS) NMR

Sridhar Komarneni; Rustum Roy; Della M. Roy; Colin A. Fyfe; Gordon J. Kennedy

doi:10.1016/0008-8846(85)90075-4

Al-substituted tobermorite-The coordination of aluminum as revealed by solid-state ²⁷Al magic angle spinning (MAS) NMR

Sridhar Komarneni, Rustum Roy, Della M. Roy, Colin A. Fyfe, Gordon J. Kennedy

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Abstract

The coordination of A1 in several synthetic A1-substituted tobermorites was determined to be tetrahedral by solid-state ²⁷Al MASNMR. Earlier results of tetrahedral Al coordination in Al-substituted tobermorites by x-ray emission were confirmed unequivocally by the new high resolution MASNMR technique. However, two ²⁷Al chemical shifts at about 68 and 57 ppm were observed in the Al-substituted tobermorites which probably indicates two different environments for the Al atom in the structure. ²⁷Al MASNMR technique clearly distinguishes the tetrahedral and octahedral coordination of Al in solid samples.

Original language	English (US)
Pages (from-to)	723-728
Number of pages	6
Journal	Cement and Concrete Research
Volume	15
Issue number	4
DOIs	https://doi.org/10.1016/0008-8846(85)90075-4
State	Published - Jul 1985

All Science Journal Classification (ASJC) codes

Building and Construction
General Materials Science

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10.1016/0008-8846(85)90075-4

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title = "Al-substituted tobermorite-The coordination of aluminum as revealed by solid-state 27Al magic angle spinning (MAS) NMR",

abstract = "The coordination of A1 in several synthetic A1-substituted tobermorites was determined to be tetrahedral by solid-state 27Al MASNMR. Earlier results of tetrahedral Al coordination in Al-substituted tobermorites by x-ray emission were confirmed unequivocally by the new high resolution MASNMR technique. However, two 27Al chemical shifts at about 68 and 57 ppm were observed in the Al-substituted tobermorites which probably indicates two different environments for the Al atom in the structure. 27Al MASNMR technique clearly distinguishes the tetrahedral and octahedral coordination of Al in solid samples.",

author = "Sridhar Komarneni and Rustum Roy and Roy, \{Della M.\} and Fyfe, \{Colin A.\} and Kennedy, \{Gordon J.\}",

note = "Funding Information: Acknowledgement: The authors acknowledge the financial support of the Natural Sciences and Engineering Research Council of Canada in the form of operating and strategic grants (C.A.F.) and post-graduate scholarship (G.J.L). The NMR spectra were obtained using the facilities of South-Western Ontario High Field NMR Center.",

year = "1985",

month = jul,

doi = "10.1016/0008-8846(85)90075-4",

language = "English (US)",

volume = "15",

pages = "723--728",

journal = "Cement and Concrete Research",

issn = "0008-8846",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Al-substituted tobermorite-The coordination of aluminum as revealed by solid-state 27Al magic angle spinning (MAS) NMR

AU - Komarneni, Sridhar

AU - Roy, Rustum

AU - Roy, Della M.

AU - Fyfe, Colin A.

AU - Kennedy, Gordon J.

N1 - Funding Information: Acknowledgement: The authors acknowledge the financial support of the Natural Sciences and Engineering Research Council of Canada in the form of operating and strategic grants (C.A.F.) and post-graduate scholarship (G.J.L). The NMR spectra were obtained using the facilities of South-Western Ontario High Field NMR Center.

PY - 1985/7

Y1 - 1985/7

N2 - The coordination of A1 in several synthetic A1-substituted tobermorites was determined to be tetrahedral by solid-state 27Al MASNMR. Earlier results of tetrahedral Al coordination in Al-substituted tobermorites by x-ray emission were confirmed unequivocally by the new high resolution MASNMR technique. However, two 27Al chemical shifts at about 68 and 57 ppm were observed in the Al-substituted tobermorites which probably indicates two different environments for the Al atom in the structure. 27Al MASNMR technique clearly distinguishes the tetrahedral and octahedral coordination of Al in solid samples.

AB - The coordination of A1 in several synthetic A1-substituted tobermorites was determined to be tetrahedral by solid-state 27Al MASNMR. Earlier results of tetrahedral Al coordination in Al-substituted tobermorites by x-ray emission were confirmed unequivocally by the new high resolution MASNMR technique. However, two 27Al chemical shifts at about 68 and 57 ppm were observed in the Al-substituted tobermorites which probably indicates two different environments for the Al atom in the structure. 27Al MASNMR technique clearly distinguishes the tetrahedral and octahedral coordination of Al in solid samples.

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U2 - 10.1016/0008-8846(85)90075-4

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AN - SCOPUS:0022093207

SN - 0008-8846

VL - 15

SP - 723

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JO - Cement and Concrete Research

JF - Cement and Concrete Research

IS - 4

ER -

Al-substituted tobermorite-The coordination of aluminum as revealed by solid-state ²⁷Al magic angle spinning (MAS) NMR

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