Microporous Mixed Octahedral-Pentahedral-Tetrahedral Framework Silicates

João Rocha; Zhi Lin

doi:10.2138/rmg.2005.57.6

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Research Article| January 01, 2005

Microporous Mixed Octahedral-Pentahedral-Tetrahedral Framework Silicates

João Rocha;

João Rocha

Department of Chemistry, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal, [email protected]

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Zhi Lin

Department of Chemistry, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal, [email protected]

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Author and Article Information

João Rocha

Department of Chemistry, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal, [email protected]

Zhi Lin

Department of Chemistry, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal, [email protected]

Publisher: Mineralogical Society of America

First Online: 03 Mar 2017

Reviews in Mineralogy and Geochemistry (2005) 57 (1): 173–201.

https://doi.org/10.2138/rmg.2005.57.6

The frameworks of zeolites and related crystalline microporous oxide materials, such as aluminophosphates, silicoaluminophosphates and metaloaluminophosphates, are built up of tetrahedrally coordinated (e.g., Si, Al, P) atoms. Microporous structures comprised entirely of octahedral sites are also known, encompassing manganese oxides (OMS materials, Suib 1998) and phases with composition Na₂Nb_2−xM_xO_6−x(OH)x•H₂O, where M = Ti, Zr, and 0< x ≤ 0.4 (SOMS solids; Nyman et al. 2001, 2002). Mixed octahedral-pentahedral-tetrahedral microporous (OPT) siliceous frameworks have been much studied since the early 1990s (Rocha and...