Sökning: "Xiaodong Zou"

Visar resultat 6 - 10 av 32 avhandlingar innehållade orden Xiaodong Zou.

  1. 6. Detailed structure features from 3D electron diffraction : Heteroatoms, framework disorders, and guest species in zeolites

    Författare :Jungyoun Cho; Xiaodong Zou; Tom Willhammar; Miguel Camblor; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; electron crystallography; zeolite; transmission electron microscope; structure determination; oorganisk kemi; Inorganic Chemistry;

    Sammanfattning : 3D electron diffraction (3D ED) has evolved as a powerful method for ab initio structure determination from sub micrometer-sized crystals. It can be used to elucidate the arrangement of atoms in crystalline materials and to provide insights into the laws of nature that govern the properties of matter. LÄS MER

  3. 7. Open-Framework Germanates : Crystallography, structures and cluster building units

    Författare :Kirsten Elvira Christensen; Xiaodong Zou; Osamu Terasaki; Angeles Monge; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; germanate; crystallography; building unit; zeotype; scale chemistry; Chemistry; Kemi; strukturkemi; Structural Chemistry;

    Sammanfattning : This thesis is focussing on the crystallographic challenges and what knowledge we can gain from studying the different open-framework germanates. Five new open-framework germanates have been synthesized and the structures have been determined by single crystal X-ray diffraction. LÄS MER

  4. 8. Unraveling the structures of complex nanocrystalline materials by combining TEM and XRPD – development and application

    Författare :Magdalena Ola Cichocka; Xiaodong Zou; Joke Hadermann; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Structure determination; 3D electron diffraction; Complex materials; X-ray powder diffraction; Transmission electron microscopy; Inorganic Chemistry; oorganisk kemi;

    Sammanfattning : Knowledge of the three-dimensional (3D) atomic structure of materials is essential to a fundamental understanding of their properties. The key to understanding the functionality of many materials, particularly those of commercial and industrial interest, is often hidden in the details at the nanoscale. LÄS MER

  5. 9. On the accuracy of crystal structural analysis and the potential of unraveling structural details by 3D electron diffraction

    Författare :Meng Ge; Xiaodong Zou; Mauro Gemmi; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; electron crystallography; three-dimensional electron diffraction; metal-organic framework; open-framework germanates; guest molecules; Inorganic Chemistry; oorganisk kemi;

    Sammanfattning : Knowing the atomic crystal structures of ordered porous solids is essential in understanding their behaviors and properties, developing new applications, and designing new porous materials. Electrons have a much shorter wavelength and much stronger interaction with atoms in a crystal compared with X-ray. LÄS MER

  7. 10. Structure Determination and Prediction of Zeolites : A Combined Study by Electron Diffraction, Powder X-Ray Diffraction and Database Mining

    Författare :Peng Guo; Xiaodong Zou; Christine Kirschhock; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; zeolites; rotation electron diffraction; structure determination; structure prediction; strong reflections approach; Inorganic Chemistry; oorganisk kemi;

    Sammanfattning : Zeolites are crystalline microporous aluminosilicates with well-defined cavities or channels of molecular dimensions. They are widely used for applications such as gas adsorption, gas storage, ion exchange and catalysis. The size of the pore opening allows zeolites to be categorized into small, medium, large and extra-large pore zeolites. LÄS MER