Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Intergrown New Zeolite Beta Polymorphs with Interconnected 12-Ring Channels Solved by Combining Electron Crystallography and Single-Crystal X-ray Diffraction
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Show others and affiliations
2012 (English)In: Chemistry of Materials, ISSN 0897-4756, E-ISSN 1520-5002, Vol. 24, no 19, 3701-3706 p.Article in journal (Refereed) Published
Abstract [en]

Two new polymorphs of zeolite beta, denoted as SU-78A and SU-78B, were synthesized by employing dicyclohexylammonium hydroxides as organic structuredirecting agents. The structure was solved by combining transmission electron microscopy and single-crystal X-ray diffraction. SU-78 is an intergrowth of SU-78A and SU-78B and contains interconnected 12-ring channels in three directions. The two polymorphs are built from the same building layer, similar to that for the zeolite beta family. The layer stacking in SU-78, however, is different from those in zeolite beta polymorph A, B, and C, showing new zeolite framework topologies. SU-78 is thermally stable up to 600°C.

Place, publisher, year, edition, pages
2012. Vol. 24, no 19, 3701-3706 p.
Keyword [en]
porous material, zeolite, zeolite beta, intergrowth, polymorph, crystal structure determination, transmission electron microscopy, electron crystallography
National Category
Inorganic Chemistry Organic Chemistry
Research subject
Structural Chemistry
Identifiers
URN: urn:nbn:se:su:diva-80854DOI: 10.1021/cm301654dISI: 000309505100005OAI: oai:DiVA.org:su-80854DiVA: diva2:557859
Funder
Swedish Research Council
Available from: 2012-10-01 Created: 2012-09-30 Last updated: 2017-12-07Bibliographically approved
In thesis
1. Open-Framework Germanates and Nickel Germanates: Synthesis and Characterization
Open this publication in new window or tab >>Open-Framework Germanates and Nickel Germanates: Synthesis and Characterization
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Microporous materials have a wide range of important applications in separation, gas adsorption, ion-exchange and catalysis. Open-framework germanates are a family of microporous compounds and are of particular interest. This thesis focuses on the synthesis and characterization of new open-framework germanates as well as introducing the transition-metal nickel into germanate structures.

One new microporous germanosilicate, SU-78 and four new open-framework germanates, SU-74, SU-75, SU-69 and SU-76 have been obtained by using organic molecules as structure directing agents (SDAs). The incorporation of nickel and organic SDAs in the synthesis resulted in five novel nickel germanates, SUT-1, SUT-2, SUT-3, SUT-4 and SUT-5, in which nickel complexes act either as framework-forming components or as structure directing agents.

The general synthesis route is described and the variables that affect the synthesis products are summarized. Different techniques applied on the characterization of chemical and physical properties of the products are also introduced.

Place, publisher, year, edition, pages
Stockholm: Department of Materials and Environmental Chemistry (MMK), Stockholm University, 2012. 81 p.
Keyword
open-framework, zeolites, germanates, nickel germanates, structure directing agent, nickel complexes, crystal structure determination, hydrothermal synthesis
National Category
Inorganic Chemistry
Research subject
Structural Chemistry
Identifiers
urn:nbn:se:su:diva-75495 (URN)978-91-7447-489-3 (ISBN)
Public defence
2012-05-30, Magnélisalen, Kemiska övningslaboratoriet, Svante Arrhenius väg 16 B, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 1: Submitted. Paper 2: Submitted. Paper 3: Submitted. Paper 5: Manuscript.

Available from: 2012-05-08 Created: 2012-04-20 Last updated: 2012-10-25Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Huang, ShiliangCórdova, ArmandoZou, Xiaodong
By organisation
Department of Materials and Environmental Chemistry (MMK)Department of Organic Chemistry
In the same journal
Chemistry of Materials
Inorganic ChemistryOrganic Chemistry

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 140 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf