A5055118585- Catalytic Processes in Materials Science
- Catalysts for Methane Reforming
- Electrocatalysts for Energy Conversion
- Advanced Combustion Engine Technologies
- Biodiesel Production and Applications
- Carbon dioxide utilization in catalysis
- CO2 Reduction Techniques and Catalysts
- Vehicle emissions and performance
- Analytical Chemistry and Chromatography
- Social Acceptance of Renewable Energy
- Advancements in Battery Materials
- Combustion and flame dynamics
- Catalysis for Biomass Conversion
- Combustion and Detonation Processes
- Advanced Battery Materials and Technologies
- Synthesis and Reactivity of Sulfur-Containing Compounds
- Various Chemistry Research Topics
- Mechanical Failure Analysis and Simulation
- Tribology and Lubrication Engineering
- Structural and Chemical Analysis of Organic and Inorganic Compounds
- Alcohol Consumption and Health Effects
- Dynamics and Control of Mechanical Systems
- International Science and Diplomacy
- Advanced Battery Technologies Research
- Higher Education and Teaching Methods
Stanford University
2018-2024
Congressional Budget Office
2024
Optica
2024
Interface (United States)
2021-2022
SLAC National Accelerator Laboratory
2021
The University of Texas at Austin
2016-2017
Indian Institute of Technology Madras
2008-2010
Anna University, Chennai
2002-2003
The morphologies of sodium electrodeposits and gas evolution were studied in a system comprising symmetrical Na/Na optical cell, digital microscope, an electrochemical workstation. Sodium deposition ethylene carbonate (EC), diethyl (DEC), propylene (PC) generated large volumes fragile, porous dendrites. use fluoroethylene (FEC) greatly reduced gassing during demonstrated superior cycling performance, impedance, efficiency when it was used as cosolvent with DEC (1:1 vol); however, depositions...
Adding 10 mM KPF6 to the 1 M LiPF6 in ethylene carbonate/dimethyl carbonate electrolyte of symmetrical Li | cells eliminated growth dendrites at 0.5 mA cm–2 current density and massively reduced, but did not eliminate, 2.5 cm–2. The added increased fraction inorganic salts solid interface, making it thinner more Li+ conductive. It overcame resulting from inadequate nucleation dendrite into depletion layer, which scales with layer's thickness, i.e., density.
Abstract Understanding the differences between reactions driven by elevated temperature or electric potential remains challenging, largely due to materials incompatibilities thermal catalytic and electrocatalytic environments. We show that Ni, N‐doped carbon (NiPACN), an electrocatalyst for reduction of CO 2 (CO R), can also selectively catalyze via reverse water gas shift (RWGS) representing a direct analogy phenomena across two reaction Advanced characterization techniques reveal NiPACN...
The conversion of CO2 into fuels and chemicals is an attractive option for mitigating emissions. Controlling the selectivity this process beneficial to produce desirable liquid fuels, but C-C coupling a limiting step in reaction that requires high pressures. Here, we propose strategy favor on supported Ru/TiO2 catalyst by encapsulating it within polymer layers imine-based porous organic controls its selectivity. Such confinement modifies hydrogenation behavior Ru surface, significantly...
Abstract Controlling selectivity is a key goal in the design of heterogeneous catalyst. Herein, we present detailed characterization and activity silica‐supported cobalt catalysts modified by atomic layer deposition ZnO. After reduction, resulting exhibit substantial towards alcohol production during CO hydrogenation compared to containing only cobalt. The prepared have up 46 % toward alcohols with 39 corresponding ethanol other higher alcohols, albeit reduced activity. In situ catalyst...
Multicomponent catalysts can be designed to synergistically combine reaction intermediates at interfacial active sites, but restructuring makes systematic control and understanding of such dynamics challenging. We here unveil how reducibility mobility indium oxide species in Ru-based crucially the direct, selective conversion CO
In this work, biogas was used in a compression ignition (CI) engine the homogeneous charge (HCCI) mode as well dual-fuel together with diesel. HCCI mode, temperature and amount of diesel injected into intake manifold were to control combustion. The presence carbon dioxide suppresses high heat release rates normally encountered neat-diesel-fuelled engines. Efficiencies close operation extremely low levels nitric oxide (NO) smoke attained brake mean effective pressure (BMEP) range from 2.5bar...
Abstract The design of supported heterogeneous catalysts requires a detailed understanding the structure and chemistry active surface. Although chemical components phase, support material, process feed are typically considered to be most important factors governing catalyst performance, many common commercial supports contain trace impurities, which can have profound effects on properties. In this work, we study silica‐supported cobalt‐based catalysts, widely used in syngas conversion...
Abstract Co 2 C, an emerging catalyst for the conversion of syngas to oxygenates, shows support‐sensitive behavior that has not yet been fully explained. Here, we characterize catalysts modified with ZnO atomic layer deposition on SiO , carbon, CeO and Al O 3 supports. We find under conditions, ZnO‐promoted transforms into C but . Moreover, support affects extent carburization: while ‐supported carburizes completely, carbon‐ show incomplete C. These three also exhibit different oxygenate...
Abstract Understanding the differences between reactions driven by elevated temperature or electric potential remains challenging, largely due to materials incompatibilities thermal catalytic and electrocatalytic environments. We show that Ni, N‐doped carbon (NiPACN), an electrocatalyst for reduction of CO 2 (CO R), can also selectively catalyze via reverse water gas shift (RWGS) representing a direct analogy phenomena across two reaction Advanced characterization techniques reveal NiPACN...
Abstract Multicomponent catalysts can be designed to synergistically combine reaction intermediates at interfacial active sites, but restructuring makes systematic control and understanding of such dynamics challenging. We here unveil how reducibility mobility indium oxide species in Ru‐based crucially the direct, selective conversion CO 2 ethanol. When uncontrolled, reduced occupy Ru surface, leading deactivation. With addition steam as a mild oxidant using porous polymer layers In...
<div class="htmlview paragraph">It has long been appreciated by engineers that the presence of smoke in diesel engine exhaust is an indication poor combustion resulting from some malfunction or maladjustment. Nevertheless with increasing concern for effect air pollution on environment, animal and plant life, particularly field road transport, vehicle emissions have recent years subjected to increasingly stringent regulations. One approach this direction use isomerized LPG dual fuel...