Synthesis and structure of polymorph B of zeolite Beta
2008 (English)In: Chemistry of Materials, ISSN 0897-4756, E-ISSN 1520-5002, Vol. 20, no 9, 3218-3223 p.Article in journal (Refereed) Published
It was found that either polymorph B or polymorph C of zeolite beta can be obtained from the same structure directing agent: 4,4-dimethyl-4-azonia-tricyclo[5.2.2.02,6]undec-8-ene hydroxide. The synthesis occurs through a consecutive process where polymorph B is first formed and then transformed into polymorph C. It is possible to produce a zeolite highly enriched in polymorph B, provided that the transformation of this phase into polymorph C is slowed down up to the point where polymorph C is only detected at trace levels. The structure of polymorph B was determined for the first time by electron crystallography with SAED and HRTEM from areas of unfaulted polymorph B crystals.
Place, publisher, year, edition, pages
2008. Vol. 20, no 9, 3218-3223 p.
IdentifiersURN: urn:nbn:se:su:diva-15423DOI: 10.1021/cm8002244ISI: 000255623400061OAI: oai:DiVA.org:su-15423DiVA: diva2:181943