A5028596546- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Advanced Photocatalysis Techniques
- Carbon dioxide utilization in catalysis
- Asymmetric Hydrogenation and Catalysis
- Catalytic C–H Functionalization Methods
- Metal-Organic Frameworks: Synthesis and Applications
- CO2 Reduction Techniques and Catalysts
- Covalent Organic Framework Applications
- Radical Photochemical Reactions
- Catalysts for Methane Reforming
- Oxidative Organic Chemistry Reactions
- Nanomaterials for catalytic reactions
- Organometallic Complex Synthesis and Catalysis
- Electrocatalysts for Energy Conversion
- Catalysis for Biomass Conversion
- Fluorine in Organic Chemistry
- Chemical Synthesis and Reactions
- Polyoxometalates: Synthesis and Applications
- Sulfur-Based Synthesis Techniques
- Catalytic Cross-Coupling Reactions
- Industrial Gas Emission Control
- Synthesis and characterization of novel inorganic/organometallic compounds
Leibniz Institute for Catalysis
2016-2025
Chinese Academy of Sciences
2024-2025
Lanzhou Institute of Chemical Physics
2024-2025
Robert Bosch (Germany)
2020-2023
University of Rostock
2012-2021
Rostocker Zentrum zur Erforschung des Demografischen Wandels
2017-2021
Albert Einstein College of Medicine
2019
Lighter Hydrogenation Catalysts Enzymes have evolved to use abundant metals such as iron, cobalt, and nickel for redox catalysis. However, synthetic catalysis has generally relied on the rarer, heavier relatives of these elements: ruthenium, rhodium, iridium, palladium, platinum (see Perspective by Bullock ). Friedfeld et al. (p. 1076 ) used high-throughput screening show that right cobalt precursor can be activated asymmetric hydrogenation using traditional ligands developed precious...
Abstract Covalent organic frameworks (COFs) have emerged as an important class of semiconductors and photocatalysts for the hydrogen evolution reaction (HER)from water. To optimize their photocatalytic activity, typically moieties constituting are considered most suitable combinations them searched for. However, effect covalent linkage between these on performance has rarely been studied. Herein, we demonstrate that donor‐acceptor (D‐A) type imine‐linked COFs can produce with a rate high...
Propane dehydrogenation (PDH) to propene is an important alternative oil-based cracking processes, produce this industrially platform chemical1,2. The commercial PDH technologies utilizing Cr-containing (refs. 3,4) or Pt-containing 5-8) catalysts suffer from the toxicity of Cr(VI) compounds need use ecologically harmful chlorine for catalyst regeneration9. Here, we introduce a method preparation environmentally compatible supported based on ZnO. This metal oxide and support (zeolite common...
Metal-organic framework (MOF)-derived Co-N-C catalysts with isolated single cobalt atoms have been synthesized and compared nanoparticles for formic acid dehydrogenation. The atomically dispersed catalyst achieves superior activity, better resistance, improved long-term stability by a similar route. High-angle annular dark-field-scanning transmission electron microscopy, X-ray photoelectron spectroscopy, paramagnetic resonance, absorption fine structure characterizations reveal the formation...
Multicomponent reactions (MCRs) can be used to introduce different functionalities into highly stable covalent organic frameworks (COFs). In this work, the irreversible three-component Doebner reaction is utilized synthesize four chemically quinoline-4-carboxylic acid DMCR-COFs (DMCR-1-3 and DMCR-1NH) equipped with an acid-base bifunctionality. These show superior photocatalytic H2O2 evolution (one of most important industrial oxidants) compared imine COF analogue (Imine-1). This achieved...
Supported V2O5/Ce1–xTixO2 (3, 5, and 7 wt % V; x = 0, 0.1, 0.3, 0.5, 1) bare supports have been tested in the selective catalytic reduction (SCR) of NO by NH3 at different gas hourly space velocities (GHSVs) were comprehensively characterized using XRD, pseudo situ XPS, UV–vis DRS as well EPR DRIFTS operando mode. The best V/Ce1–xTixO2 (x 0.5) catalysts showed almost 100% conversion N2 selectivity already 190 °C with a GHSV value 70000 h–1, which belongs to performances observed so far...
When new covalent organic frameworks (COFs) are designed, the main efforts typically focused on selecting specific building blocks with certain geometries and properties to control structure function of final COFs. The nature linkage (imine, boroxine, vinyl, etc.) between these naturally also defines their properties. However, besides type, orientation, i.e., constitutional isomerism linkages, has rarely been considered so far as an essential aspect. In this work, three pairs...
Covalent organic frameworks (COFs) are structurally tuneable, porous and crystalline polymers constructed through the covalent attachment of small building blocks as elementary units. Using myriad such blocks, a broad spectrum functionalities has been applied for COF syntheses applications, including heterogeneous catalysis. Herein, we report synthesis new family COFs using novel acridine linker benzene-1,3,5-tricarbaldehyde derivatives bearing variable number hydroxy groups. With absorption...
Indium oxide (In2O3) is a promising catalyst for selective CH3OH synthesis from CO2 but displays insufficient activity at low reaction temperatures. By screening range of promoters (Co, Ni, Cu, and Pd) in combination with In2O3 using flame spray pyrolysis (FSP) synthesis, Ni identified as the most suitable first-row transition-metal promoter similar performance Pd–In2O3. NiO–In2O3 was optimized by varying Ni/In ratio FSP. The resulting catalysts including NiO end members have high specific...
Abstract Isotope labelling, particularly deuteration, is an important tool for the development of new drugs, specifically identification and quantification metabolites. For this purpose, many efficient methodologies have been developed that allow small-scale synthesis selectively deuterated compounds. Due to compounds as active drug ingredients, there a growing interest in scalable methods deuteration. The large-scale deuterium labelling industrial settings requires technologies are...
Constructing hierarchical and ultrathin‐structured metal sulfides is beneficial for achieving high‐efficiency hydrogen evolution catalysts. Herein, ZnIn 2 S 4 (ZIS) hollow nanoflowers (HNFs) composed of ultrathin nanosheets are creatively synthesized via a facile trisodium citrate‐mediated stirring‐assisted solvothermal method. Experimental results reveal that the synergy effect ethanol, citrate, continuous stirring during synthesis process play significant role in optimizing microstructure...
Photocatalytic ozonation of wastewater pollutants by sunlight is a highly attractive technology close to real application. Understanding this process on the atomic scale and under realistic working conditions challenging but vital for rational design catalysts photocatalytic decontamination systems. Here we study two active C3N4 photocatalysts (bulk nanosheet-structured C3N4) simultaneous visible-light irradiation O3 bubbling in water situ EPR spectroscopy coupled with an online...
Abstract The CF 3 group is an omnipresent motif found in many pharmaceuticals, agrochemicals, catalysts, materials, and industrial chemicals. Despite well‐established trifluoromethylation methodologies, the straightforward selective introduction of such groups into (hetero)arenes using available less expensive sources still a major challenge. In this regard, synthesis various trifluoromethyl‐substituted by palladium‐catalyzed C−H functionalization herein reported. This novel methodology...
ConspectusPhotocatalytic ozonation (light/O3/photocatalyst), an independent advanced oxidation process (AOP) proposed in 1996, has demonstrated over the past two decades its robust capacity and potential for practical wastewater treatment using sunlight air (source of ozone). However, development is restricted by main issues: (i) a lack breakthrough catalysts working under visible light (42–43% energy) as well ambiguous property–activity relationships (ii) unclear fundamental reasons...
The controlled electrochemical reduction of carbon dioxide to value added chemicals is an important strategy in terms renewable energy technologies. Therefore, the development efficient and stable catalysts aqueous environment great importance. In this context, we focused on synthesizing studying a molecular MnIII -corrole complex, which modified three meso-positions with polyethylene glycol moieties for direct selective production acetic acid from CO2 . Electrochemical leads electroactive...
The simultaneous control of the defect species and surface properties semiconducting materials is a crucial aspect improving photocatalytic performance, yet it remains challenging. Here, we synthesized Mg–Zr-codoped single-crystalline Ta3N5 (Ta3N5:Mg+Zr) nanoparticles by brief NH3 nitridation process, exhibiting water reduction activity 45 times greater than that pristine under visible light. A coherent picture relations between (comprising reduced Ta, nitrogen vacancies oxygen impurities),...
In a systematic approach to control and improve the performance of Au/ZnO catalysts in methanol synthesis from CO2, we have studied effect varying ZnO particle size. We show that with increasing size (22–103 nm), while keeping Au loading/Au constant, activity for formation passes through maximum volcano-shaped relation, selectivity increases steadily. This is explained by an electronic modification interface perimeter sites, due metal–support interactions (EMSIs), which occur together...
The understanding of the reaction mechanism product formation in oxidative coupling methane (OCM) is prerequisite for designing catalysts with improved selectivity to desired products, i.e., C2H6 and C2H4 (C2 hydrocarbons). One step this direction understand kind oxygen species involved selective nonselective reactions. Against background, a series kinetic mechanistic tests OCM N2O (N2O–OCM) were carried out over Mn–Na2WO4/SiO2 system absence presence cofed water. usage instead O2 was proven...
Elucidating the reaction mechanism in heterogeneous catalysis is critically important for catalyst development, yet remains challenging because of often unclear nature active sites. Using a molecularly defined copper single-atom supported by UiO-66 metal-organic framework (Cu/UiO-66) allows detailed mechanistic elucidation CO oxidation reaction. Based on combination situ/operando spectroscopies, kinetic measurements including isotope effects, and density-functional-theory-based calculations,...