TY - JOUR
T1 - Direct detection of Al-O-Al structure in aluminosilicate specimens
T2 - A use of homo-nuclear DQMAS NMR
AU - Lin, Xiongchao
AU - Ideta, Keiko
AU - Miyawaki, Jin
AU - Wang, Yonggang
AU - Nishiyama, Yusuke
AU - Yoon, Seongho
AU - Mochida, Isao
N1 - Funding Information:
We gratefully acknowledge the financial support provided by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry; and the New Energy and Industrial Technology Development Organization (NEDO) of Japan.
Publisher Copyright:
© Springer-Verlag Wien 2013.
PY - 2014/6/1
Y1 - 2014/6/1
N2 - A general strategy of Al-O-Al structure in various aluminosilicate was evaluated by combining triple-quantum magic angle spinning (3QMAS) and double-quantum homo-nuclear correlation under magic angle spinning (DQMAS) solid-state nuclear magnetic resonance (NMR) measurements with the aid of high magnetic field NMR (800 MHz for 1H Larmor frequency). The results show that in many cases the direct detection of Al-O-Al sites in aluminosilicate crystals and glasses is possible; hence the extent of aluminum avoidance can be directly elucidated. Specifically, experimental evidence of Al-O-Al linkages in several aluminosilicate materials with Si/Al [1 was straightforwardly confirmed; and the existence of Al-O-Al is considered to have little correlation with the Si/Al ratio, but it may be strongly related to the cation and local structural arrangement. In addition, the presence of tri-clusters of (Si, Al)O4-tetrahedra in aluminosilicate framework was proposed, which was thought to act as nuclei for formation and incorporation of cations to achieve charge neutrality.
AB - A general strategy of Al-O-Al structure in various aluminosilicate was evaluated by combining triple-quantum magic angle spinning (3QMAS) and double-quantum homo-nuclear correlation under magic angle spinning (DQMAS) solid-state nuclear magnetic resonance (NMR) measurements with the aid of high magnetic field NMR (800 MHz for 1H Larmor frequency). The results show that in many cases the direct detection of Al-O-Al sites in aluminosilicate crystals and glasses is possible; hence the extent of aluminum avoidance can be directly elucidated. Specifically, experimental evidence of Al-O-Al linkages in several aluminosilicate materials with Si/Al [1 was straightforwardly confirmed; and the existence of Al-O-Al is considered to have little correlation with the Si/Al ratio, but it may be strongly related to the cation and local structural arrangement. In addition, the presence of tri-clusters of (Si, Al)O4-tetrahedra in aluminosilicate framework was proposed, which was thought to act as nuclei for formation and incorporation of cations to achieve charge neutrality.
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U2 - 10.1007/s00723-013-0504-4
DO - 10.1007/s00723-013-0504-4
M3 - Article
AN - SCOPUS:85027957632
VL - 45
SP - 111
EP - 123
JO - Applied Magnetic Resonance
JF - Applied Magnetic Resonance
SN - 0937-9347
IS - 2
ER -