A5035946103- Catalytic Processes in Materials Science
- Catalysis and Hydrodesulfurization Studies
- Catalysis and Oxidation Reactions
- Nanomaterials for catalytic reactions
- Catalysis for Biomass Conversion
- Electrocatalysts for Energy Conversion
- TiO2 Photocatalysis and Solar Cells
- Lignin and Wood Chemistry
- Advanced Photocatalysis Techniques
- Machine Learning in Materials Science
- Layered Double Hydroxides Synthesis and Applications
- Advanced battery technologies research
- Supercapacitor Materials and Fabrication
- Catalysts for Methane Reforming
Washington State University
2018-2023
Langston University
2022
In this work, we compare the CO oxidation performance of Pt single atom catalysts (SACs) prepared via two methods: (1) conventional wet chemical synthesis (strong electrostatic adsorption-SEA) with calcination at 350 °C in air; and (2) high temperature vapor phase (atom trapping-AT) air 800 leading to ionic being trapped on CeO2 a thermally stable form. As-synthesized, both SACs are inactive for low (<150 °C) oxidation. After treatment 275 °C, show enhanced reactivity. Despite similar metal...
Abstract Compared with batteries, the advantages of capacitive energy storage include high power, fast charging kinetics, and long cycling stability. Owing to their layered structure tunable transition metal charge, double hydroxides (LDHs) have great potential be applied as pseudocapacitor materials. Here, a systematic experimental study is reported on impact Ni/Al ratio structure, morphology, ion transport interlayer phenomena, performance NiAl‐LDH supercapacitor electrode materials, in...
Alkanol dehydration on Lewis acid–base pairs of transition metal oxide catalysts is a reaction importance in oxygen removal from biomass-derived feedstocks and their conversion to chemicals general. However, with high degree structural heterogeneity, such as commercial TiO2 powders, are not well-suited establish rigorous structure–function relationships at an atomic level. Here, we provide compelling evidence for the effects surface orientation catalyst elimination reactions alcohols. Two...
In the present study, we investigate surface acid–base properties of anatase TiO2 nanomaterials with dominant {101} and {001} facets via methanol titrations. Two nanoparticles, TiO2(101) TiO2(001), well-defined morphology are prepared. is predominantly enclosed by (>90%), TiO2(001) contains ∼46% ∼54% facets. Upon adsorption at 423 K, diffuse reflectance infrared Fourier transform spectroscopy measurements show that both molecular dissociative occur on TiO2(101), while dominates TiO2(001)....
Abstract Noble metals have been extensively employed in a variety of hydrotreating catalyst systems for their featured functionality hydrogen activation but may also bring side reactions such as undesired deep hydrogenation. It is crucial to develop viable approach selectively inhibit while preserving beneficial functionalities. Herein, we present modifying Pd with alkenyl-type ligands that forms homogeneous-like Pd-alkene metallacycle structure on the heterogeneous achieve selective...
Development of inexpensive sulfur-free catalysts for selective hydrogenolysis the C-O bond in phenolics (i.e., removal oxygen without aromatic ring saturation) under liquid-phase conditions is highly challenging. Here, we report an efficient approach to engineer earth-abundant Fe with a graphene overlayer and alkali metal Cs), which produces arenes 100% selectivity from hydrodeoxygenation (HDO) high durability. In particular, that thin (a few layers) surface can be engineered on metallic...
Abstract Iron‐carbide‐based catalysts have been explored in the selective hydrodeoxygenation (HDO) of phenol, aiming at elucidating role active site and alkali metal. Complementary characterization such as X‐ray diffraction, photoelectron spectroscopy, high‐resolution transmission electron microscopy, scanning microscopy coupled with energy loss together catalytic evaluations revealed a rapid structural reconstruction iron carbide (Fe 3 C) catalysts, leading to stable defective...
Selective hydrodeoxygenation (HDO)/hydrogenolysis of phenolics to produce arene in liquid-phase conditions is a key challenge biomass valorization. Cost-effective base-metal catalysts are intriguing for this application, yet they typically suffer from inferior performance compared precious metals. Herein, we report Cs-G@CoFe catalyst with bimetallic alloy core and graphene overlayers doped Cs, on which HDO phenol >90% benzene selectivity was achieved under conditions. More importantly, the...