Sökning: "MFI zeolite"
Visar resultat 1 - 5 av 35 avhandlingar innehållade orden MFI zeolite.
1. Tuned acidity in zeotypes: A descriptor to unravel the direct conversion of methane to methanol
Sammanfattning : The catalyst's acidity is crucial in countless chemical reactions, and thus to tune this parameter means to take the lead on the desired catalytic reaction. Therefore, it is not surprising that zeolites have been used since decades as catalysts for their outstanding properties of solid acids. LÄS MER
2. Structured zeolite adsorbents
Sammanfattning : Zeolites are microporous crystalline aluminosilicates with unique properties, and therefore used in adsorption processes, for membrane separation, in catalysis, and in sensor technologies. Pressure swing adsorption (PSA) is a commonly used technology for purifying gases and is based on the ability of materials like zeolites, to selectively adsorb and desorb particular gas molecules as the gas pressure is increased and reduced, respectively. LÄS MER
3. Synthesis, characterization and applications of hierarchical porous inorganic materials: a multi-dimensional approach
Sammanfattning : Zeolites are a type of microporous crystalline materials that have been widely used in industrial applications including separation, adsorption, and catalysis. However, great limitations on diffusion through these materials can arise due to the small pores present in mircoporous frameworks, and this can impact catalytic reactions in particular. LÄS MER
4. Study of MFI zeolite membrane for CO2 separation
Sammanfattning : Nowadays, the need and interest for renewable sources of energy has increased. Biogas is a renewable source of energy that can be considered as a sustainable substitute for natural gas. LÄS MER
5. Gas Adsorption and Permeation in MFI Zeolites and Membranes
Sammanfattning : The single and multi component gas adsorption behavior on silicalite-1 and cation exchanged MZSM-5 zeolites (M = H, Na, and Ba) were investigated by a step change response method. Temperature programmed desorption (TPD) and in-situ fourier transform infrared (FTIR) spectroscopy were also performed to study the type of adsorbed species and their thermal stabilities. LÄS MER