A5043284449- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Catalysts for Methane Reforming
- Electrocatalysts for Energy Conversion
- Catalysis and Hydrodesulfurization Studies
- Zeolite Catalysis and Synthesis
- Catalysis for Biomass Conversion
- Supercapacitor Materials and Fabrication
- Nanomaterials for catalytic reactions
- Ammonia Synthesis and Nitrogen Reduction
- Advancements in Battery Materials
- Chemical Looping and Thermochemical Processes
- Graphene research and applications
- Advanced Chemical Physics Studies
- Mesoporous Materials and Catalysis
- Hydrogen Storage and Materials
- Carbon Dioxide Capture Technologies
- Advanced Battery Materials and Technologies
- Polyoxometalates: Synthesis and Applications
- Catalytic C–H Functionalization Methods
- Fuel Cells and Related Materials
- Carbon Nanotubes in Composites
- Advanced Photocatalysis Techniques
- Machine Learning in Materials Science
- Advancements in Solid Oxide Fuel Cells
Norwegian University of Science and Technology
2016-2025
ZheJiang Academy of Agricultural Sciences
2022-2025
State Key Laboratory of Chemical Engineering
2004-2025
East China University of Science and Technology
2004-2025
China University of Petroleum, East China
2021-2024
Dongguan University of Technology
2024
Shanghai Institute of Technical Physics
2024
Chinese Academy of Sciences
2024
University of Chinese Academy of Sciences
2024
Lanzhou University
2022-2023
We report a size-dependent activity in Pt/CNT catalyzed hydrolytic dehydrogenation of ammonia borane. Kinetic study and model calculations revealed that Pt(111) facet is the dominating catalytically active surface. There an optimized Pt particle size ca. 1.8 nm. Meanwhile, catalyst durability was found to be highly sensitive size. The smaller particles appear have lower durability, which could related more significant adsorption B-containing species on surfaces as well easier changes shape....
Density functional theory calculations have been performed to investigate the effect of Sn on catalytic activity and selectivity Pt catalyst in propane dehydrogenation. Five models with different surface molar ratios are constructed represent PtSn surfaces. With increase content, d-band is broadened, which gives rise a downshift center Consequently, bonding strength propyl propylene alloyed surfaces lowered. decomposition adsorption energy, change deformation energy predicted be dominant...
Abstract The effects of the orientation a graphene sheet, edge structure carbon nanofibers, and different surface functional groups on proton affinity, interactions with metal nanoparticles, electronic modification these structures, together their catalytic consequences, have been reviewed. ratio prismatic to basal sites nanofibers has remarkable influence properties both CNFs nanoparticles that are supported it. particles, density particles can be further manipulated by fine‐tuning groups,...
Highly dispersed bimetallic Pd-In catalysts on Al2O3 were prepared by a simple impregnation method. In comparison with the unsupported intermetallic catalyst, supported catalyst exhibited several magnitudes higher activity and similar selectivity for selective acetylene hydrogenation. Moreover, activity, selectivity, anticoking performance of superior to those monometallic Pd catalyst. The electron transferred from indium weakened adsorption ethylene negatively charged sites hence improved...
Platinum cluster size has a significant influence on the activity, selectivity, and stability as well reaction mechanism during propane dehydrogenation (PDH). Well-controlled platinum catalysts of different sizes are prepared by seed growth method supported calcined hydrotalcite. The Pt show strong structure-sensitive behavior both in C–H bond activation C–C to yield ethylene, methane, coke. clusters small sizes, with (211) dominating surface, have lower energy barrier thus higher activity....
The structure–performance relationship is a critical fundamental issue in heterogeneous catalysis, and the size-dependent structure sensitivity of catalytic reactions has long been researched catalysis. Yet it remains elusive for most full-size range, from single atom subnanometer clusters to nanoparticles. Herein, we report complete size dependence Pt catalysts used propane dehydrogenation terms activity, selectivity, stability due coke formation. turnover frequency (TOF) atomically...
Metal-organic frameworks (MOFs) have recently emerged as promising precursors to construct efficient non-noble metal electrocatalyst for oxygen evolution reaction (OER). Herein, a Co-Ni-Fe spinel oxide-carbonitrides hybrids (CoNiFeOx-NC) with hierarchical structure was synthesized from Fe-MIL-101-NH2 through unique ion-exchange based strategy. The ion exchange of both Ni and Co ions induced hierarchically structured 2-D ternary MOF shell layer encapsulated 3-D octahedral crystals core. This...
We demonstrate an unprecedented H2 generation activity in the hydrolytic dehydrogenation of ammonia borane over acid oxidation- and subsequent high temperature-treated CNT immobilized Pt nanocatalysts to combine merits defect-rich oxygen group-deficient surfaces unique textural properties supports as well optimum particle size Pt.
Abstract Understanding the catalytic mechanism of bimetallic nanocatalysts remains challenging. Here, we adopt an adsorbate mediated thermal reduction approach to yield monodispersed AuPd catalysts with continuous change Pd-Au coordination numbers embedded in a mesoporous carbonaceous matrix. The structure nanoalloys is well-defined, allowing for direct determination structure-property relationship. results show that Pd single atom and dimer are active sites base-free oxidation primary...
Abstract The activity of Fischer–Tropsch synthesis (FTS) on metal-based nanocatalysts can be greatly promoted by the support reducible oxides, while role remains elusive. Herein, varying reduction condition to regulate TiO x overlayer Ru nanocatalysts, reactivity Ru/TiO 2 differentially modulated. in FTS shows a volcano-like trend with increasing temperature from 200 600 °C. Such variation is characterized related activation CO at interfaces. Further theoretical calculations suggest that...
The mechanism and structure requirements of selective total oxidation methane in a chemical looping process are both experimentally theoretically examined on La1–xSrxFeO3−δ (x = 0, 0.2, 0.5) La0.5Sr0.5Fe1–xCoxO3−δ 0.5 1) perovskites. oxygen mobility the perovskites described by formation energy vacancy is found to have pronounced effect catalytic activity selectivity. In particular, selectivity controlled largely surface concentration or perovskites, which depends strongly bulk relative rate...
By introducing Pt atoms into the surface of reduced hydrotalcite (HT)-derived nickel (Ni/HT) catalysts by redox reaction, we synthesized an enhanced active and stable Ni-based catalyst for methane dry reforming reaction. The bimetallic Pt–Ni can simultaneously enhance activity, increase H2/CO ratio suppressing reverse water–gas shift stability increasing resistance to carbon deposition during Kinetic study showed that 1.0Pt–12Ni reduces activation energy CH4 dissociation enhances catalytic...
Developing efficient and stable electrocatalysts within a wide potential range is vital for the mature applications of electrocatalytic CO2 reduction reaction (CO2RR) into value-added chemical products. Herein, we engineered NC@Ni/C nano-composite featuring core–shell structure pyridinic-N-rich carbon layer encapsulating Ni nanoparticles (NPs) as highly effective electrocatalyst CO2RR to CO over range. The catalyst demonstrates high Faradaic efficiency (FECO) >90% in from −0.65 −1.45 V [vs...
Abstract Cu‐CHA is the state‐of‐the‐art catalyst for Selective Catalytic Reduction (SCR) of NOx in vehicle applications. Although extensively studied, diverse mechanistic proposals still stand terms nature active Cu‐ions and reaction pathways SCR working conditions. Herein we address redox mechanism underlying Low‐Temperature (LT) on by an integration chemical‐trapping techniques, transient‐response methods, operando UV/Vis‐NIR spectroscopy with modelling tools based transient kinetic...
Carbon monoxide (CO) is notorious for its strong adsorption to poison platinum group metal catalysts in the chemical industry. Here, we conceptually distinguish and quantify effects of occupancy energy d electrons, emerging as two vital factors d-band theory, CO poisoning Pt nanocatalysts. The stepwise defunctionalization carbon support adopted fine-tune 5d electronic structure supported nanoparticles. Excluding other promotional mechanisms, increase band strengthens competitive hydrogen...
Achieving efficient catalytic conversion over a heterogeneous catalyst with excellent resistance against leaching is still grand challenge for sustainable chemical synthesis in aqueous solution. Herein, we devised single-atom Pt1 /hydroxyapatite (HAP) via simple hydrothermal strategy. Gratifyingly, this robust /HAP exhibits remarkable selectivity and stability the selective oxidation of C2 -C4 polyols to corresponding primary hydroxy acids. It found that Pt-(O-P) linkages strong...
Oxidation of renewable polyol/sugar into formic acid using molecular O2 over heterogeneous catalysts is still challenging due to the insufficient activation both and organic substrates on coordination-saturated metal oxides. In this study, we develop a defective MnO2 catalyst through coordination number reduction strategy enhance aerobic oxidation various polyols/sugars acid. Compared common MnO2, tri-coordinated Mn in displays electronic reconstruction surface oxygen charge state rich...
Abstract Capturing and utilizing CO 2 from the production process is key to solving excessive emission problem. hydrogenation with green hydrogen produce olefins an effective promising way utilize valuable chemicals. The can be produced by through two routes, i.e., -FTS (carbon dioxide Fischer–Tropsch synthesis) MeOH (methanol-mediated), among which has significant advantages over in practical applications due its relatively high conversion low energy consumption potentials. However, faces...
Self-consistent periodic slab calculations based on gradient-corrected density functional theory (DFT-GGA) have been conducted to examine the reaction network of propane dehydrogenation over close-packed Pt(111) and stepped Pt(211) surfaces. Selective C-H or C-C bond cleaving is investigated gain a better understanding catalyst site requirements for dehydrogenation. The energy barriers form propylene are calculated be in region 0.65-0.75 eV 0.25-0.35 flat surfaces, respectively. Likewise,...