A5060754452- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Electrocatalysts for Energy Conversion
- Nanomaterials for catalytic reactions
- Catalysis and Hydrodesulfurization Studies
- Advanced Photocatalysis Techniques
- Catalysts for Methane Reforming
- Zeolite Catalysis and Synthesis
- Ammonia Synthesis and Nitrogen Reduction
- Catalysis for Biomass Conversion
- Nuclear materials and radiation effects
- Advanced battery technologies research
- CO2 Reduction Techniques and Catalysts
- Supercapacitor Materials and Fabrication
- Nanocluster Synthesis and Applications
- Luminescence Properties of Advanced Materials
- Transition Metal Oxide Nanomaterials
- Gas Sensing Nanomaterials and Sensors
- Advancements in Battery Materials
- Electronic and Structural Properties of Oxides
- Mesoporous Materials and Catalysis
- Carbon dioxide utilization in catalysis
- Nuclear Materials and Properties
- Advanced Nanomaterials in Catalysis
- Carbon Dioxide Capture Technologies
Pacific Northwest National Laboratory
2020-2025
Zhejiang University of Technology
2022-2025
Xiamen University
2017-2023
Collaborative Innovation Center of Chemistry for Energy Materials
2018-2021
Sofia University "St. Kliment Ohridski"
2021
Washington State University
2020
Nanchang University
2014-2018
Abstract A single‐atom Pt 1 /CeO 2 catalyst formed by atom trapping (AT, 800 °C in air) shows excellent thermal stability but is inactive for CO oxidation at low temperatures owing to over‐stabilization of 2+ a highly symmetric square‐planar O 4 coordination environment. Reductive activation form nanoparticles (NPs) results enhanced activity; however, the NPs are easily oxidized, leading drastic activity loss. Herein we show that tailoring local environment isolated thermal‐shock (TS)...
Zeolite-confined metal nanoparticles (NPs) have attracted much attention owing to their superior sintering resistance and broad applications for thermal environmental catalytic reactions. However, the pore size of conventional zeolites is usually below 2 nm, reactants are easily blocked access active sites. Herein, a facile in situ mesoporogen-free strategy developed design synthesize palladium (Pd) NPs enveloped single-crystalline zeolite (silicalite-1, S-1) with intra-mesopores (termed...
Single atoms of platinum group metals on CeO2 represent a potential approach to lower precious metal requirements for automobile exhaust treatment catalysts. Here we show the dynamic evolution two types single-atom Pt (Pt1) CeO2, i.e., adsorbed Pt1 in Pt/CeO2 and square planar PtATCeO2, fabricated at 500 °C by atom-trapping method 800 °C, respectively. Adsorbed is mobile with situ formation few-atom clusters during CO oxidation, contributing high reactivity near-zero reaction order CO. In...
Atom trapping leads to catalysts with atomically dispersed Ru1O5 sites on (100) facets of ceria, as identified by spectroscopy and DFT calculations. This is a new class ceria-based materials Ru properties drastically different from the known M/ceria materials. They show excellent activity in catalytic NO oxidation, critical step that requires use large loadings expensive noble metals diesel aftertreatment systems. Ru1/CeO2 stable during continuous cycling, ramping, cooling well presence...
Direct oxidation of methane to value-added C1 chemicals (e.g. HCHO and CO) provides a promising way utilize natural gas sources under relatively mild conditions. Such conversions remain, however, key selectivity challenge, resulting from the facile formation undesired fully-oxidized CO2. Here we show that B2O3-based catalysts are selective in direct conversion CO (~94% with HCHO/CO ratio ~1 at 6% conversion) highly stable (over 100 hour time-on-stream operation) conducted fixed-bed reactor...
Hexagonal boron nitride (h-BN) catalyst has recently been reported to be highly selective in oxidative dehydrogenation of propane (ODHP) for olefin production. In addition propene, ethylene also forms with much higher overall selectivities C2-products than C1-products. this work, we report that the reaction pathways over h-BN are different from V-based catalysts ODHP. Oxidative coupling methyl, an intermediate cleavage C─C bond propane, contributes high C2-products, leading more C1-products...
Abstract We show for the first time that atomically dispersed Rh cations on ceria, prepared by a high‐temperature atom‐trapping synthesis, are active species (CO+NO) reaction. This provides direct link with organometallic homogeneous I complexes capable of catalyzing dry The thermally stable in 0.1 wt % 1 /CeO 2 achieve full NO conversion turn‐over‐frequency (TOF) around 330 h −1 per atom at 120 °C. Under conditions, main product above 100 °C is N O being minor product. presence water...
Oxidative dehydrogenation of propane (ODHP) is an emerging technology to meet the global propylene demand with boron nitride (BN) catalysts likely play a pivotal role. It widely accepted that gas-phase chemistry plays fundamental role in BN-catalyzed ODHP. However, mechanism remains elusive because short-lived intermediates are difficult capture. We detect free radicals (CH3•, C3H5•) and reactive oxygenates, C2-4 ketenes C2-3 enols, ODHP over BN by operando synchrotron photoelectron photoion...
Reducing methane emissions is crucial for mitigating global warming. Developing highly efficient catalysts low-temperature combustion of great importance. Supported single-atom (SACs) have received significant attention in this regard. However, their long-term stability and activity remain challenging. In study, we present a method creating active thermally stable Pd1/CeO2 catalyst by using thermal-shock synthesis (Pd1/CeO2-TS). By subjecting isolated Pd2+ ions to ultrafast shockwaves,...
Abstract La 2 Sn O 7 and Zr , two pyrochlore compounds with different B‐site cations, were prepared used as supports for Ni in methane steam reforming. Compared Ni/γ‐Al 3 both Ni/La show very stable reaction performance. Whereas also displays reasonably high activity the reaction, of is extremely low. It was found that severe coking occurred but no coke formation observed on catalysts. On reduced spent catalyst, alloys detected; these suppressed decreased catalyst. In comparison, a large...
A mesoporous La<sub>2</sub>Sn<sub>2</sub>O<sub>7</sub>-HT pyrochlore with an unusually high surface area was successfully synthesized a simple hydrothermal method at 200 °C. Due to its and the presence of more active oxygen species, Pd supported on this shows remarkable CO oxidation activity.
Direct deoxygenation of long-chain fatty acids can produce both saturated alkanes (Cn H2n+2 ) and unsaturated olefins H2n ). However, the selectivity for production via decarbonylation route is relatively low because more favorable decarboxylation pathway. We present an atomically ordered intermetallic PtZn alloy on carbon catalyst (PtZn/C) with a record-high total (97 %) undecane (C11 H24 undecene H22 in lauric acid (C12 O2 Interestingly, C11 as high 67.0 % PtZn/C, which significantly...
Photocatalytic CO2 reduction into renewable hydrocarbon solar fuels is considered as a promising strategy to simultaneously address global energy and environmental issues. This study focused on the direct coupling of photocatalytic water splitting thermocatalytic hydrogenation in conversion -H2 O fuels. Specifically, it was found that thermo- photocatalysis over Au-Ru/TiO2 leads activity 15 times higher (T=358 K; ca. 99 % CH4 selectivity) than splitting. ascribed promoting effect by hydrogen...
Proton-exchange membrane fuel cells are considered as promising energy-conversion devices. Alloying 3d transition metals with noble not only highly improves the performance of metal-based catalysts towards electrocatalytic reactions in due to d-d hybridization interaction but also decreases total cost. However, rapid leaching metal atoms leads a fast decay activity, which seriously affects cell. Herein, alloyed Pd-main group (e.g. Pb, Bi, Sn) ultrathin nanowires were realized by facile...
Boron oxide-based catalysts have been shown to be both active and selective for driving the oxidative dehydrogenation of propane (ODHP) without use metal promoters. However, this reaction occurs at temperatures where boron oxide melts, challenging experimental identification molecular structures within phase under conditions thus hindering understanding its sites mechanism(s). By combining density functional theory computations, ab initio dynamics simulations, in situ Raman characterization,...
Abstract The growth of lithium (Li) dendrites, characterized by construction internal Li substrate and surface solid electrolyte interphase (SEI), represents a significant hurdle for both liquid‐state solid‐state batteries. To better understand the behaviors these dendrites at atomic to device scale, advanced electron microscopy techniques have emerged as valuable tool, providing high temporal spatial resolutions real‐time observations. In this review, mechanistic aspects are delved first...
Acetylene semi-hydrogenation is a crucial reaction in the ethylene purification industry, and nickel-based catalysts are widely studied due to their low cost excellent hydrogenation activity. However, catalytic stability...
Catalytic transfer hydrogenation (CTH) of biomass-derived furfural (FAL) to furfuryl alcohol is recognized as one the most versatile techniques for biomass valorization. However, irreversible sintering metal sites under high-temperature reaction or during coke removal regeneration process poses a serious concern. Herein, we present silicalite-1-confined ultrasmall CuO structure ([email protected]) and then compared its catalytic efficiency against conventional surface-supported...
An assembly of platinum nanoparticles and N-stabilized single-atom bismuth shows unexpected high activity selectivity for selective oxidation glycerol to dihydroxyacetone.