Sökning: "NATURVETENSKAP Kemi Miljökemi"

Visar resultat 36 - 40 av 164 avhandlingar innehållade orden NATURVETENSKAP Kemi Miljökemi.

1. 36. Crystal Structure Determination by 3D Electron Diffraction — New Software for Facilitating Data Processing

   Författare :Viktor E. G. Bengtsson; Xiaodong Zou; Hongyi Xu; Tatiana Gorelik; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; oorganisk kemi; Inorganic Chemistry;

   Sammanfattning : Three-Dimensional Electron Diffraction (3DED) is a useful technique for determining crystal structures from very small crystals (hundreds of \si{\nano\meter} or less). Examples of such crystals are zeolites, metal-organic frameworks (MOFs), pharmaceuticals, and proteins. LÄS MER

3. 37. Development of Metal–Organic Frameworks for Catalysis : Designing Functional and Porous Crystals

   Författare :Fabian Carson; Xiaodong Zou; Jeffrey R. Long; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Metal–organic frameworks; heterogeneous catalysis; nanoparticles; metallolinkers; postsynthetic modification; postsynthetic exchange; Inorganic Chemistry; oorganisk kemi;

   Sammanfattning : Metal–organic frameworks, or MOFs, have emerged as a new class of porous materials made by linking metal and organic units. The easy preparation, structural and functional tunability, ultrahigh porosity, and enormous surface areas of MOFs have led to them becoming one of the fastest growing fields in chemistry. LÄS MER

4. 38. Probing Paramagnetic Systems by Solid-State NMR Spectroscopy

   Författare :José P. Carvalho; Andrew J. Pell; Sharon Ashbrook; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Solid-state NMR; Magic-Angle Spinning; Paramagnetic NMR; Frequency-Swept Adiabatic Pulses; Quantum Chemistry; Quadrupolar Interaction; Physical Chemistry; fysikalisk kemi;

   Sammanfattning : Paramagnetic systems have a wide range of applications ranging from energy storage or conversion to catalytic processes, metalloproteins and light-emitting materials. Over the recent years nuclear magnetic resonance (NMR) spectroscopy has become an established tool for studying the structural and electronic properties of these systems, largely because it can provide a link between the structure and the bulk properties. LÄS MER

5. 39. Rechargeable Aqueous Batteries Based on Available Resources : Investigation and Development towards Efficient Battery Performance

   Författare :Mylad Chamoun; Dag Noréus; Gunnar Svensson; Jekabs Grins; Ann Mari Svensson; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; rechargeable aqueous batteries; alkaline electrolytes; aqueous sulfate electrolytes; zinc electrodes; manganese dioxide electrodes; iron electrodes; air electrodes; oxygen electrocatalysts; Inorganic Chemistry; oorganisk kemi;

   Sammanfattning : Batteries employing water based electrolytes enable extremely low manufacturing costs and are inherently safer than Li-ion batteries. Batteries based on zinc, manganese dioxide, iron, and air have high energy relevancy, are not resource restricted, and can contribute to large scale energy storage solutions. LÄS MER

7. 40. Open-framework Structures Built by Inorganic Clusters : Synthesis and Characterization

   Författare :Hong Chen; Junliang Sun; Xiaodong Zou; Thomas E Albrecht-Schmitt; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Open-framework; germanates; vanadoborates; aluminoborates; germanosilicates; crystal structure; hydrothermal synthesis; crystal X-ray diffraction; rotation electron diffraction; powder X-ray diffraction; Inorganic Chemistry; oorganisk kemi;

   Sammanfattning : Novel open-framework germanates and vanadoborates, which are constructed from typical types of clusters, have been synthesized based on different strategies. The crystal structures are solved by using single crystal X-ray diffraction (SXRD) technique or by combined techniques. LÄS MER