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Wolverhampton Intellectual Repository and E-Theses > School of Applied Sciences > Research Centre in Applied Sciences  > Plant and Environmental Research Group > Synthesis and characterisation of aluminophosphate-based zeotype materials prepared with α,ω-bis(N-methylpyrrolidinium) alkane cations as structure directing agents.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2436/30336
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Title: Synthesis and characterisation of aluminophosphate-based zeotype materials prepared with α,ω-bis(N-methylpyrrolidinium) alkane cations as structure directing agents.
Authors: Maple, Martin J.
Williams, Craig D.
Citation: Dalton Transactions, 2007(37): 4175-4181
Publisher: RSC Publishing
Journal: Dalton Transactions
Issue Date: 2007
URI: http://hdl.handle.net/2436/30336
DOI: 10.1039/b706206k
Additional Links: http://www.rsc.org/publishing/journals/DT/article.asp?doi=b706206k
Abstract: New routes to the preparation of two families of small pore microporous solids are described. Flexible diquaternary alkyl ammonium cations (C4H8)CH3N+(CH2)nN+CH3(C2H8), n = 3–5, have been found to act as structure directing agents in the synthesis of aluminophosphate-based materials of the ABC-6 group. The templates exhibit considerable selectivity in crystallising phases of the ERI or AFX-type (MeAPO-17 or MeAPO-56, respectively) from a wide variety of metalloaluminophosphate gels (Me = Mg2+, Co2+ or Si4+). For example, from gels containing Mg/P = 0–0.25, 1,4-bis(N-methylpyrrolidinium)butane cations gave MgAPO-17, and 1,5-bis(N-methylpyrrolidinium)pentane cations gave MgAPO-56. Notably, materials could be prepared with levels of metal-substitution tailored to a high degree and distributed non-randomly within the framework. As-prepared solids have been characterised by powder XRD, multinuclear solid state NMR, FT-IR, SEM, and thermal and elemental analysis.
Type: Article
Language: en
Keywords: Geochemistry
Zeotype materials
Synthesis
Cations
ISSN: 14779226
14779234
Appears in Collections: Plant and Environmental Research Group

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