A5108697879- Catalytic Processes in Materials Science
- Catalysts for Methane Reforming
- Catalysis and Oxidation Reactions
- Carbon dioxide utilization in catalysis
- Catalysis for Biomass Conversion
- Catalysis and Hydrodesulfurization Studies
- Metal-Organic Frameworks: Synthesis and Applications
- Mesoporous Materials and Catalysis
- Zeolite Catalysis and Synthesis
- CO2 Reduction Techniques and Catalysts
- Supercapacitor Materials and Fabrication
- Nanomaterials for catalytic reactions
- Ammonia Synthesis and Nitrogen Reduction
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Advanced Photocatalysis Techniques
- Innovative Microfluidic and Catalytic Techniques Innovation
- Asymmetric Hydrogenation and Catalysis
- Layered Double Hydroxides Synthesis and Applications
- Machine Learning in Materials Science
- Ultrasound and Cavitation Phenomena
- Hydrogen Storage and Materials
- Covalent Organic Framework Applications
- Advanced oxidation water treatment
- TiO2 Photocatalysis and Solar Cells
King Abdullah University of Science and Technology
2021-2024
M S Ramaiah University of Applied Sciences
2024
Indian Institute of Chemical Technology
2017-2022
Leibniz Institute for Catalysis
2019-2020
University of Rostock
2020
RMIT University
2017
University of Hyderabad
2017
Institute of Catalysis and Petrochemistry
2017
Abstract Metal–organic frameworks have drawn attention as potential catalysts owing to their unique tunable surface chemistry and accessibility. However, application in thermal catalysis has been limited because of instability under harsh temperatures pressures, such the hydrogenation CO 2 methanol. Herein, we use a controlled two-step method synthesize finely dispersed Cu on zeolitic imidazolate framework-8 (ZIF-8). This catalyst suffers series transformations during methanol, leading ~14...
In the present work, nanowire morphologies of α-MnO2, cobalt monodoped Cu and Co bidoped Ni α-MnO2 samples were prepared by a facile hydrothermal synthesis. The structural, morphological, surface, redox properties all as-prepared investigated various characterization techniques, namely, scanning electron microscopy (SEM), transmission high resolution (TEM HR-TEM), powder X-ray diffraction (XRD), N2 sorption surface area measurements, photoelectron spectroscopy (XPS),...
Stimulated by the capacity of Zn to improve adoption CO2 and CH4, we doped a Ni-supported ZrO2 catalyst with enhance its performance stability in dry reforming methane. We prepared set catalysts different Ni:Zn:Zr proportions conducted extensive ex situ characterizations prove that Ni–Zn alloy was formed at 750 °C under reductive conditions. Combining tailored morphology nanoparticles, strong metal–support (ZnO–ZrO2) interactions, additional oxygen vacancies created inclusion resulted an...
Exsolved Ni–Fe alloy perovskite catalysts exhibit remarkable coking resistance during C–H and C–O activation. However, metallic utilization is typically incomplete, resulting in relatively low catalytic activity. Herein, we investigated minimal doping with Rh to boost the activity dry reforming of methane by promoting exsolution enlargement three-phase boundary between alloy, support, reactants. The influences formation as revealed X-ray diffraction, promotes individual collective CH4 CO2...
Silicon carbide (SiC) or carborundum has unparalleled thermal stability and conductivity compared with many other materials. This feature together its unique photoelectrical properties (tunable band gap: 2.39–3.33 eV), low expansion, high strength, good chemical makes it an ideal inert solid in catalysis. The evolution of methods for synthesizing SiC also progressively endowed additional features at the multiscale. review tracks development from a secondary to leading role material First,...
Ammonia decomposition is an attractive process for decarbonized hydrogen production. Alkalis are known to promote the reaction, which especially important enable non-noble metal catalysts achieve similar performances benchmark Ru catalyst. Herein, we evaluate kinetic contribution of Ba as a promoter in Co–Ce catalysts, using microkinetic approach investigate influence on elementary steps ammonia decomposition. For this purpose, performed experiments over wide range conditions with two and...
The production of higher linear olefins via ethylene oligomerization is an applied industrial process using homogeneous catalysts in the liquid phase. Heterogeneous based on Ni supported zeolites are attractive materials for gas phase but typically offer a low selectivity or conversion. Here, we investigate tailored method to introduce Ni2+ species within hierarchical zeolite crystallization step (in situ) and compare it with standard impregnation procedure (ex situ). situ engineered...
Decarbonizing the current energy system requires a shift toward renewable sources, among which ammonia is remarkable hydrogen carrier.
Phenols are recalcitrant compounds that constitute the majority of organic contaminants in industrial wastewaters. Their removal at large scales require a combination various processes to reach desired discharge quality. An extensive body work has already been published area phenol from wastewater, however none them have focussed on truly 'sensible' approach for coupling advanced oxidation (AOPs). Rather, higher efficiency was targeted by unduly complicating process combining multiple AOPs....
Zeolitic imidazolate frameworks (ZIFs) have been profusely used as catalysts for inserting CO2 into organic epoxides (i.e., epichlorohydrin) through cycloaddition. Here, we demonstrate that these materials suffer from irreversible degradation by leaching. To prove this, performed the reactions and analyzed final reaction mixtures elemental analysis resulting different microscopies. We found difference in catalytic activity between three ZIF-67 one ZIF-L was related to rate at which degraded....
Catalysts based on MCM-41 decorated with 35–70 nm diameter Ni particles were tested for the production of hydrogen by catalytic decomposition methane (CDM). About 122 N m3 (molNi)−1 yield was achieved over a catalyst comprised optimized loading 50 wt % Ni/MCM-41. The H2 increased dramatically to 204 (molNi)−1, upon modification 10 Cu. presence Cu, in contact Ni, appeared reduce sintering and coking active sites, which enhanced longevity catalyst. Raman analysis catalysts recovered after CDM...
Ru supported on activated carbon, Al2O3, and MgO was assessed for the hydrogenation of levulinic acid (LA) to γ-valerolactone (GVL). Role H2O activity studied by probe-adsorbed diffuse-reflectance infrared Fourier transform (DRIFT) spectroscopy. carbon showed a maximum productivity 1.18 kgGVL kgcatalyst–1 h–1 with an insignificant loss in after 72 h continuous operation presence H2O. Using pure LA, GVL rate decreased order magnitude (0.12 h–1) within 6 reaction time. The physicochemical...
Abstract Kinetic model development is integral for designing, redesigning, monitoring, and optimizing chemical processes. Of the various approaches used within this field, microkinetic modeling a crucial tool that focuses on surface events to analyze overall preferential reaction pathways. This work covers noticeable features of three critical case studies: (i) ammonia hydrogen, (ii) oxidative coupling methane chemicals, (iii) carbon dioxide hydrogenation methanol synthesis. We how enables...
This paper presents a microkinetic model to evaluate the effects of silicon carbide (SiC) co-support and shaping method on Mn-Na 2 WO 4 /SiO catalysts used for oxidative coupling methane....