Loading...
Search for:
fuel-production
0.01 seconds
Optimum Design of Micro Reactor for CO2 Methanation by CFD
, M.Sc. Thesis Sharif University of Technology ; Kazemeini, Mohammad (Supervisor)
Abstract
In this study, the viability of handling flue gas streams as a source of CO2 for the thermocatalytic conversion was investigated as a CO2 emissions reduction strategy and an intermittent energy storage solution. A transient mathematical model for dynamic catalyst deactivation was validated with experimental results and then used to study HEX membrane reactor. A simulation-based study of novel Sabatier reactor configurations was performed to study the effect of distributed H2 supply on Ni-based catalyst deactivation and to optimize the production of CH4. First, a heat-exchanger type, actively cooled Sabatier reactor is analyzed using a transient mathematical model to assess its feasibility....
Metal-Organic framework derived CuCo2O4 as a promising Co-Catalyst for improving electrochemical hydrogen evolution activity of MoS2 nanoflowers
, Article Chemical Physics Letters ; Volume 809 , 2022 ; 00092614 (ISSN) ; Taherinia, D ; Akbarzadeh, E ; Gholami, M.R ; Sharif University of Technology
Elsevier B.V
2022
Abstract
The great promise of electrochemical water splitting for green and sustainable hydrogen fuel production has motivated researchers to strive for more efficient and low-cost catalysts based on non-precious metals. In this study, MoS2 nanoflowers decorated with CuCo2O4 were successfully synthesized, and their catalytic activities toward the electrochemical hydrogen evolution reaction (HER) in an alkaline medium were investigated. The composition, structure, and morphology of the as-synthesized catalysts were explored by various techniques such as FT-IR, XRD, BET, SEM, and TEM. To maximize the catalytic activity, the composition of the nanocomposites was systematically varied. Catalytic results...
Dynamic Modeling of a Bubble Column Bioreactor Using Hybrid Neural Networks
, M.Sc. Thesis Sharif University of Technology ; Pishvaie, Mahmoud Reza (Supervisor) ; Vafa, Ehsan (Supervisor)
Abstract
With the daily increasing demand for energy, we are facing many crises, such as environmental pollution and global warming, etc. Geopolitical issues can also lead to problems for some countries in reaching the energy demand considered in their development plan of them. For this purpose, a part of the global research is focused on removing these obstacles. One of the methods that can be used to produce cleaner fuel, or more precisely "biofuel", is the gaseous fermentation of synthesis gas by microorganisms and algae. A rod-shaped, anaerobic microorganism called Clostridium ljungdahlii uses synthesis gas for its reproduction. In other words, this bacterium can ferment carbon monoxide, carbon...
Trimetallic Co-Ni-Mn metal-organic framework as an efficient electrocatalyst for alkaline oxygen evolution reaction
, Article Journal of Electroanalytical Chemistry ; Volume 922 , 2022 ; 15726657 (ISSN) ; Hatami, H ; Mirzaee Valadi, F ; Sharif University of Technology
Elsevier B.V
2022
Abstract
Designing efficient and inexpensive catalysts toward the oxygen evolution reaction (OER) is vital for achieving sustainable and green hydrogen fuel production through water electrolysis. Herein, we have synthesized several bi- and trimetallic metal–organic frameworks (MOFs) composed of Co, Ni, and Mn metals and benzene-1,3,5-tricarboxylic acid linker. The MOFs were prepared via a simple hydrothermal method, and their electrocatalytic performances in alkaline OER were investigated. A battery of analytical techniques was employed to characterize the as-synthesized materials, including field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM),...