A5064132236- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Asymmetric Hydrogenation and Catalysis
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Nanomaterials for catalytic reactions
- Catalysts for Methane Reforming
- Catalysis for Biomass Conversion
- Catalysis and Hydrodesulfurization Studies
- Crystallography and molecular interactions
- Advanced Photocatalysis Techniques
- Zeolite Catalysis and Synthesis
- Carbon dioxide utilization in catalysis
- Metal-Organic Frameworks: Synthesis and Applications
- Inorganic Chemistry and Materials
- Synthesis and characterization of novel inorganic/organometallic compounds
- Bone Tissue Engineering Materials
- Organoboron and organosilicon chemistry
- Ammonia Synthesis and Nitrogen Reduction
- Mesoporous Materials and Catalysis
- Organometallic Complex Synthesis and Catalysis
- Gas Sensing Nanomaterials and Sensors
- Additive Manufacturing and 3D Printing Technologies
- Chemical Synthesis and Reactions
- CO2 Reduction Techniques and Catalysts
Leibniz Institute for Catalysis
2016-2025
Regenics (Norway)
2023
Roskilde University
2021
University of Rostock
2010-2020
Rostocker Zentrum zur Erforschung des Demografischen Wandels
2017-2020
Leibniz Institute for Neurobiology
2014
IIT@MIT
2006
Broad Institute
2005
Tufts University
2005
Due to the complexity of heterogeneous catalysts, identification active sites and ways for their experimental design are not inherently straightforward but important tailored catalyst preparation. The present study reveals efficient C-H bond activation in C1-C4 alkanes over ZrO2 free any metals or metal oxides usually catalysing this reaction. Quantum chemical calculations suggest that two Zr cations located at an oxygen vacancy responsible homolytic dissociation. This pathway differs from...
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...
Incorporation of silicon atoms into nickel nanoparticles boosts the catalytic activity for (de)hydrogenation reactions.
Novel heterogeneous cobalt-based catalysts have been prepared by pyrolysis of cobalt complexes with nitrogen ligands on different inorganic supports. The activity and selectivity the resulting materials in hydrogenation nitriles carbonyl compounds is strongly influenced modification support nitrogen-containing ligand. optimal catalyst system ([Co(OAc)2/Phen@α-Al2O3]-800 = Cat. E) allows for efficient reduction both aromatic aliphatic including industrially relevant dinitriles to primary...
For the first time N-graphitic-modified cobalt nanoparticles (Co/phen@SiO2-800) are shown to be active in semihydrogenation of alkynes alkenes. Key success for efficient catalysis is both modification metal by nitrogen-doped graphitic layers and use silica as support. Several internal converted Z isomer high yields with up 93% selectivity. In addition, a variety terminal alkynes, including sensitive functionalized compounds, readily into Notably, this non-noble-metal catalyst allows...
The prevalence of large bone defects is still a major problem in surgical clinics. It is, thus, not surprise that bone-related research, especially the field tissue engineering, issue medical research. Researchers worldwide are searching for missing link engineering graft materials mimic bones, and foster osteogenesis remodeling. One approach combination additive manufacturing technology with smart additionally electrically active biomaterials. In this study, we performed three-dimensional...
Nitrogen modified cobalt nanoparticles are easily prepared from melamine or resins. The resulting catalysts show excellent selectivity for transfer hydrogenation of N-heteroarenes.
Environmentally friendly and low-cost catalysts are required for large-scale nonoxidative dehydrogenation of propane to propene (PDH) replace currently used CrOx- or Pt-based catalysts. This work introduces ZnO-containing ZrO2- MZrOx-supported (M = Ce, La, Ti Y) The most active materials outperformed the state-of-the-art with supported CrOx, GaOx, ZnOx, VOx species as well bulk ZrO2-based without ZnO. space–time yield 1.25 kgC3H6·kg–1cat·h–1 at a conversion about 30% selectivity 95% was...
Alkali metal promoters have been widely employed for preparation of heterogeneous catalysts used in many industrially important reactions. However, the fundamentals their effects are usually difficult to access. Herein, we unravel mechanistic and kinetic aspects role alkali metals CO
ZnO-based catalysts are promising for nonoxidative propane dehydrogenation (PDH) to propene owing their low cost and environmental friendliness but experience serious loss of the active component because reduction ZnO metallic Zn that evaporates. Here, we demonstrate MgO-modified ZnOx/silicalite-1 materials prepared through one-pot hydrothermal method active, selective, durable in PDH reaction. The undesired could also be successfully suppressed without negative effect on performance a...
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...
Bone healing is a complex process orchestrated by various factors, such as mechanical, chemical and electrical cues. Creating synthetic biomaterials that combine several of these factors leading to tailored controlled tissue regeneration, the goal scientists worldwide. Among those piezoelectricity which creates physiological microenvironment plays an important role in stimulating bone cells fostering regeneration. However, only limited number studies have addressed potential combining...
By applying N-doped carbon modified iron-based catalysts, the controlled hydrogenation of N-heteroarenes is achieved.
The development of inexpensive and practical catalysts for arene hydrogenations is key future valorizations this general feedstock. Here, we report the cobalt nanoparticles supported on silica as selective such reactions. specific were prepared by assembling cobalt-pyromellitic acid-piperazine coordination polymer commercial subsequent pyrolysis. Applying optimal nanocatalyst, industrial bulk, substituted, functionalized arenes well polycyclic aromatic hydrocarbons are selectively...
0.1–3 wt % Ce-promoted MCM-41-supported nickel catalysts were prepared for dry reforming of CH4 (DRM) and characterized by surface area pore analyses, powder X-ray diffraction , temperature-programed reduction with H2, CO2 desorption, photoelectron spectroscopy, thermogravimetric analysis, scanning transmission electron microscopy using a high-angle annular dark field. Notably, 5Ni0.5Ce/MCM-41 has bimodal distribution NiO crystallites inside outside the pores MCM-41, highest number basic...
Nickel(0) supported by strongly basic lanthanide hydroxides/oxyhydroxides (Ni-Ln, Ln = La, Pr, and Sm) is an efficient alternative noble metal-free catalyst for hydrogenolysis of tetrahydrofurfuryl alcohol (THFA) to 1,5-pentanediol (1,5-PeD) in organic solvents (e.g., isopropanol). The catalytic performance Ni-Ln was studied both batch continuous modes. highest yield 1,5-PeD 88% a system 73% flow using 40Ni-La reduced. Interestingly, reduced not only selective (≥84%) but also stable...
MnOx–Na2WO4/SiO2 is one of the best-performing catalysts in oxidative coupling methane (OCM) to C2 hydrocarbons (C2H6 and C2H4). The current mechanistic concepts related selectivity desired products are based on involvement crystalline Mn-containing phases, molten Na2WO4 phase, surface Na–WOx species, associated lattice oxygen. Using situ X-ray diffraction, operando UV–vis spectroscopy, spatially resolved kinetic analysis product formation steady-state OCM tests, temporal with isotopic...
CO2 hydrogenation over Fe-based catalysts is a promising pathway to mitigate emissions of this greenhouse gas and provides possibility for crude-oil-free production chemicals fuels. Understanding (i) the role crystalline phases or/and surface species in working catalysts, (ii) factors affecting their formation under reaction conditions, (iii) kind reactivity precursors gas-phase products vital controlling efficiency hydrogenation. In study, we applied time-resolved situ characterization...
Catalytic hydrogenations are important and widely applied processes for the reduction of organic compounds both in academic laboratories industry. To perform these reactions sustainable practical manner, development applicability non-noble metal–based heterogeneous catalysts is crucial. Here, we report highly active air-stable nickel nanoparticles supported on mesoporous silica (MCM-41) as a general selective hydrogenation catalyst. This catalytic system allows carbonyl compounds,...
The selective hydrogenation of benzofurans in the presence a heterogeneous non-noble metal catalyst is reported. developed optimal catalytic material consists cobalt-cobalt oxide core-shell nanoparticles supported on silica, which has been prepared by immobilization and pyrolysis cobalt-DABCO-citric acid complex silica under argon at 800 °C. This novel allows for simple functionalized to 2,3-dihydrobenzofurans as well related heterocycles. versatility reported protocol showcased reduction...