Results 41 to 50 of about 76,488 (262)

Dynamic modeling of three-phase upflow fixed-bed reactor including pore diffusion [PDF]

, 2002
The dynamics of a three-phase upflow fixed-bed reactor are investigated using a non-isothermal heterogeneous model including gas–liquid and liquid–solid mass transfer and diffusion/reaction phenomena inside the catalyst.
A.M Wilhelm, C Julcour, Diaz, Gabarain, H Delmas, Hindmarsh, J.M Le Lann, Julcour, Julcour, Lange, Lange, R.V Chaudhari, Reid, Specchia, Stüber, Visser, Wärna   +16 more
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Experimental study on removal of chromium using nano-silica coated pyrolysed biochar in batch, fixed bed and fluidized bed reactor: Synthesis, characterization, experimentation and mechanism

Waste Management Bulletin
Nowadays Nano technology is used as one of the alternative for removal of pollutants. In this study, raw sawdust was used as biomass and was pyrolyzed at high temperature in an inert environment.
Papita Das, Vijoyeta Chakraborty
doaj   +1 more source

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

Advanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado, Enqi Bu, Yaning Han, Carlos López‐Cartes, Mónica Calatayud, Huiyan Pan, Xiaowei Chen   +6 more
wiley   +1 more source

Nanoparticle Shape Dictates Catalytic Performance in Selective Hydrogenation of Butadiene Over Au‐Pd Core‐Shell Nanoparticles

Advanced Functional Materials, EarlyView.
Controlling the exposed crystal facet of shape‐controlled Au‐Pd core‐shell catalysts though colloidal synthesis enhances their catalytic performance in the industrially relevant selective hydrogenation of butadiene. ABSTRACT Selective hydrogenation of butadiene is a critical step in purification of alkene feedstocks for polymer production and is ...
Marta Perxés Perich, Jan‐Willem Lankman, Petra E. de Jongh, Jessi E. S. van der Hoeven   +3 more
wiley   +1 more source

Numerical Modelling of Emission Formation in Domestic Boiler for Coal [PDF]

Transactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2010
The aim of the work is to develop a method of simple haracterization of solid fuels combustion in fixed bed, which would be useful for CFD modelling. In this work, the measurements were performed in a test rig, where a combustion front propagates against
Jozef JANDACKA, Andrzej SZLEK
doaj  

Fixed bed gasification of wood char: characterisation of a new continuous downdraft reactor [PDF]

, 2009
A staged gasification process coupled with a gas engine is one of the most promising technologies for small and medium sized electricity production. The purpose of this work was to design and build new experimental equipment to characterise the wood char
Martin, Eric, Salvador, Sylvain, Texeira, G., Van de Steene, Laurent   +3 more
core  

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Thermochemical Heat Storage in a Lab-Scale Indirectly Operated CaO/Ca(OH)₂ Reactor—Numerical Modeling and Model Validation through Inverse Parameter Estimation

Applied Sciences, 2021
Calcium oxide/Calcium hydroxide can be utilized as a reaction system for thermochemical heat storage. It features a high storage capacity, is cheap, and does not involve major environmental concerns.
Gabriele Seitz, Farid Mohammadi, Holger Class   +2 more
doaj   +1 more source

Tuning Amorphous‐Crystalline Catalytic Interfaces by Mechanochemistry: Cu‐Based Metallic Glasses Coupled with Ceria for CO Oxidation

Advanced Materials, EarlyView.
Ball‐milling Cu‐based metallic glasses with ceria creates a unique nanostructure where metallic glass particles are wrapped by CeO2 nanoparticles. The intimate integration triggers copper state reorganization during reaction and aging, boosting CO oxidation and COPrOx activity.
Maahin Mirzay‐Shahim, Mehran Nabahat, Laia Pascua‐Solé, Isabel Serrano, Ilaria Lucentini, Xènia Garcia, Marina Armengol‐Profitós, Asier Agrelo‐Lestón, Ignasi Burgués‐Ceballos, Núria J. Divins, Ignacio J. Villar‐Garcia, Virginia Pérez‐Dieste, Carlos Escudero, Carlo Marini, Jordi Llorca, Eloi Pineda, Pere Bruna, Lluís Soler   +17 more
wiley   +1 more source

Fluidized bed as a solid precursor delivery system in a chemical vapor deposition reactor [PDF]

, 2005
Chemical vapor deposition (CVD) using precursors that are solids at operating temperatures and pressures, presents challenges due to their relatively low vapor pressures.
Caussat, Brigitte, Gladfelter, Wayne L., Moersch, Tyler, Sarantopoulos, Christos, Senocq, François, Toro, David, Vahlas, Constantin   +6 more
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