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kaolin
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Characterization and Properties of Red Mud and Utilization of it in Ceramics
, M.Sc. Thesis Sharif University of Technology ; Yuzbashi Zade, Hossein (Supervisor)
Abstract
In this project, after studies about red mud, a product of the Bayer process in production of Alumina, its properties, and characteristics, red mud samples, taken from Jajarm Alumina production unit, were studied, tested, and processed. After primary preparation, characteristic determination experiments were performed on these wastes that contain iron oxide, TiO2, Al2O3, etc., and some of their physical, chemical and mineralogical characteristics were determined. These experiments include chemical analysis, XRD, XRF, compressive strength measurement, grain size distribution, prosity, etc. Considering the properties of this substance and its ceramic usages, processess of making ceramic...
Mechanistically Investigation of Residual Oil Saturation in Heterogeneous Glass Micromodel during Low Salinity Water Injection
, M.Sc. Thesis Sharif University of Technology ; Ayatollahi, Shahaboddin (Supervisor) ; Masihi, Mohsen (Supervisor)
Abstract
Oil and gas reservoirs in various parts of the world have declined over time, despite a high percentage of oil. Due to the increasing need for hydrocarbon resources, the need for more cost-efficient harvesting methods and less environmental damage is felt. Injection of saline water is one of the most cost-effective ways of harvesting due to the need for no expensive additives. On the other hand, microscopic glass modeling can be used to better understand and understand the performance of saline water at the microscopic scale. In this study we have been able to visualize the effective factors in infusion of saline water. Improved interfacial tensile and particle migration in kaolin-coated...
Synthesis and Optimization of Conditions for Protecting the SAPO-34 Catalyst in the Methanol to Light Olefins (MTO) Process
, M.Sc. Thesis Sharif University of Technology ; Ghotbi, Sirous (Supervisor) ; Hamidzadeh, Marziyeh (Supervisor)
Abstract
In this study, with the aim of developing a cost-effective SAPO-34 catalyst based on kaolin and evaluating the effect of synthesis conditions on its performance in the methanol-to-light-olefins (MTO) process, a hydrothermal synthesis route was designed and implemented. Three key factors—gel aging time, calcination temperature for converting kaolin to metakaolin, and the percentage of seed added to the gel—were selected as influential variables. SAPO-34 was synthesized using kaolin as the precursor, with morpholine and tetraethylammonium hydroxide employed as structure-directing agents. The resulting samples were characterized in terms of structural properties and catalytic performance to...