displaying 1000 best results Help
Search results for: CARBIDE CTALYSTS
-
Catalysts
Journals -
Metal (Mo, W, Ti) Carbide Catalysts: Synthesis and Application as Alternative Catalysts for Dry Reforming of Hydrocarbons—A Review
PublicationDry reforming of hydrocarbons (DRH) is a pro-environmental method for syngas production. It owes its pro-environmental character to the use of carbon dioxide, which is one of the main greenhouse gases. Currently used nickel catalysts on oxide supports suffer from rapid deactivation due to sintering of active metal particles or the deposition of carbon deposits blocking the flow of gases through the reaction tube. In this view,...
-
Novel sugar-based nickel-tungsten carbide catalysts for dry reforming of hydrocarbons
PublicationThe search for new materials for dry reforming of hydrocarbons with high activity, stability, and ease of synthesis is still one of the main directions of research in the field of heterogeneous catalysis. Traditional methods of carbide synthesis require the use of combustible gases of petrochemical origin. The search for new catalysts based on renewable and safe carbon sources is highly demanded. Therefore, we report WC and Ni-WC...
-
Silicon carbide application issues
PublicationThe main goals of Task 3 and Task 4 of the ordered project ''New technologies based on silicon carbide and their application in HF, high power and high temperature electronics'' are presented
-
APPLIED CATALYSIS B-ENVIRONMENTAL
Journals -
CATALYSIS TODAY
Journals -
Power devices in Polish National Silicon Carbide Program
PublicationArtykuł zawiera informacje o polskim rządowym programie ''Nowe technologie na bazie węglika krzemu i ich zastosowania w elektronice wielkich częstotliwości, dużych mocy i wysokich temperatur''. Program zawiera trzy główne zadania zawierające następujące cele: wytworzenie podłoży z SiC, wytworzenie przyrządów z SiC oraz ocenę działania wybranych przyrządów w układach aplikacyjnych. Omówiono zastosowane metody wytwarzania podłoży,...
-
Catalytic activity of Ni-MgAl2O4 modified with transition metal (Ti, Mo, W) carbides as potential catalysts for resource recovery via dry reforming of waste plastics
PublicationThe growing amounts of plastic waste and CO2 emissions are two environmental threats that require urgent attention. Pyrolysis combined with dry reforming (PCDR) is a technology that allows both CO2 utilization and resource recovery from waste plastic. New catalysts for PCDR are crucial for developing efficient and stable processes that can be widely implemented in the industry. In this study, Ni/MgAl2O4 catalysts modified using different...
-
Low-temperature synthesis of silicon carbide powder using shungite
Publication -
Grinding of cemented carbides with planetary kinematics
PublicationW pracy przeprowadzono wyniki badań szlifowania z wykorzystaniem nowoczesnej szlifierki planetarnej DLM 505 HS. Zastosowano jednolite narzędzie wykonane z ziarna diamentowego D107. W artykule wyprowadzono podstawowe równania ruchu w układzie planetarnym. Przedstawiono również wartości parametrów chropowatości, ubytku materiałowego i płasko-równoległości po szlifowaniu przedmiotów wykonanych z węglików spiekanych - HF10, D10x8 mm.
-
Influence of Boron Carbide on Core Degradation During Severe Accidents in LWRs
Publication -
Investigation of RTS Noise in Reverse Polarized Silicon Carbide Schottky Diodes
PublicationOne of the method of electronic device quality and reliability evaluation is observation of its inherent noise. The RTS phenomena usually indicates the presence of large defects in the structure of the material of the device, therefore it can be treated as an indicator of technology quality. In the paper authors present results of RTS investigations in reverse polarized Silicon Carbide Schottky diodes. Devices being studied are...
-
Direct synthesis of fine boron carbide powders using expanded graphite
Publication -
Low Frequency Noise Measurement of Reverse Polarized Silicon Carbide Schottky Diodes
PublicationW artykule przedstawiono wyniki pomiaró szumów cz. wstecznie spolaryzowanych diod Schottky'ego.
-
Surface texture formation in precision machining of direct laser deposited tungsten carbide
Publication -
Bulk synthesis of carbon-filled silicon carbide nanotubes with a narrow diameter distribution
Publication -
Surface roughness analysis after machining of direct laser deposited tungsten carbide
Publication -
Synergistic catalysis of Fe3O4/CuO bimetallic catalyst derived from Prussian blue analogues for the efficient decomposition of various organic pollutants
Publication -
Wear Resistance Enhancement of Al6061 Alloy Surface Layer by Laser Dispersed Carbide Powders
PublicationIn this paper, results of the experimental study on improving wear resistance in sliding friction of Al-based alloy are presented. The technique used involves the formation of a metal matrix composite (MMC) in the alloy surface layer by laser dispersion of carbide powders such as WC, TiC and SiC. For WC and TiC MMC surface coatings fabricated under conditions typical for most of the technologically relevant solid-state lasers (wavelength...
-
On the formation process of silicon carbide nanophases via hydrogenated thermally induced templated synthesis
Publication -
CATALYSIS LETTERS
Journals -
Alpha-pinene isomerization over Ti-SBA-15 catalysts obtained by the direct method: The influence of titanium content, temperature, catalyst amount and reaction time
Publication -
Potential of silicon carbide MOSFETs in the DC/DC converters for future HVDC offshore wind farms
Publication -
ACS Catalysis
Journals -
APPLIED CATALYSIS A-GENERAL
Journals -
Tribological and thermal behavior with wear identification in contact interaction of the Ti6Al4V-sintered carbide with AlTiN coatings pair
Publication -
Wear of carbide inserts during turning of C45 steel in dry cutting conditions and in presence of emulsion mist
Publication -
Ranking of Heterogeneous Catalysts Metals by Their Greenness
PublicationCatalysis is very important process in industry and laboratory practice, especially from the point of green chemistry principles. However, eco-friendly character of heterogeneous catalysts, containing transition metal components has not been evaluated, yet. Therefore, we perform a comprehensive assessment of 18 heterogeneous metal catalysts (Pd, Pt, V, Co, Ni, Mo, Ru, Mn, Au, Cu, Cd, Zr, Fe, Rh, Ir, Sn, Zn, Ag) using multicriteria...
-
Cobalt-based Catalysts for Ammonia Decomposition
Publication -
Historia Caribe
Journals -
CATALYSIS COMMUNICATIONS
Journals -
JOURNAL OF CATALYSIS
Journals -
Evolution of the surface species of the V2O5–WO3 catalysts
Publication -
Carbon nanotube synthesis via ceramic catalysts
Publication -
Randomly Functionalized Polyethylenes: In Quest of Avoiding Catalyst Deactivation
PublicationWell-defined randomly functionalized polyolefins produced by catalysis form an interesting class of polymers with great potential for various applications. One of the major challenges for the production of these materials forms the incompatibility of the commonly used electrophilic group 4 metal based catalysts and the desired nucleophilic, especially protic functionalities like hydroxyl and carboxylic acid groups. Although pacification...
-
Investment Analysts Journal
Journals -
Chlorination of Carbon Nanotubes Obtained on the Different Metal Catalysts
Publication -
Investigation of manganese-doped iron ammonia synthesis catalysts
Publication -
Carbonaceous catalysts from orange pulp for limonene oxidation
Publication -
Comparison of the Efficiency of Hetero- and Homogeneous Catalysts in Cellulose Liquefaction
PublicationBiomass liquefaction is a well-known and extensively described process. Hydrothermal processes are well understood and can be used in the fuel industry. The use of organic solvents can result in full-fledged products for use in the synthesis of polyurethanes. The plastics industry, including polyurethanes, is targeting new, more environmentally friendly solutions. One of these is the replacement of petrochemical polyols with compounds...
-
Boron doped carbon nanotubes via ceramic catalysts
Publication -
A Review on Deactivation and Regeneration of Catalysts for Dimethyl Ether Synthesis
Publicationhe deactivation of catalysts and their regeneration are two very important challenges that need to be addressed for many industrial processes. The most quoted reasons for the deterioration of dimethyl ether synthesis (DME) concern the sintering and the hydrothermal leaching of copper particles, their migration to acid sites, the partial formation of copper and zinc hydroxycarbonates, the formation of carbon deposits, and surface...
-
Advances in Catalysis
Journals -
Catalysis in Industry
Journals -
KINETICS AND CATALYSIS
Journals -
International Competitiveness as the Catalyst of Productivity
Publication.
-
The isomerization of α-pinene over the Ti-SBA-15 catalyst—the influence of catalyst content and temperature
Publication -
Anales del Caribe
Journals -
Heterogeneous Oxidation of Phenolic Compounds with Photosensitizing Catalysts Incorporated into Chitosan
Publication -
Study of the Kinetics of Ammonia Synthesis and Decomposition on Iron and Cobalt Catalysts
Publication