Results 71 to 80 of about 1,887,958 (350)

Critical role of formaldehyde during methanol conversion to hydrocarbons

open access: yesNature Communications, 2019
The recognition of the importance of HCHO in methanol to olefins (MTO) makes it imperative to quantify its concentration in the reaction and distribution over the catalyst bed.
Yue Liu   +6 more
doaj   +1 more source

Catalyst bed removing tool Patent [PDF]

open access: yes, 1965
Catalyst bed element removing ...
Newman, J. B.
core   +1 more source

Probing the role of a non-thermal plasma (NTP) in the hybrid NTP catalytic oxidation of methane [PDF]

open access: yes, 2017
Three recurring hypotheses are often used to explain the effect of non-thermal plasmas (NTPs) on NTP catalytic hybrid reactions; namely, modification or heating of the catalyst or creation of new reaction pathways by plasma-produced species. NTP-assisted
Bruggeman   +29 more
core   +3 more sources

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

open access: yesAdvanced 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   +17 more
wiley   +1 more source

Evaluation of particle size effect on two-phase flow distribution in a hydrotreatment reactor guard bed using particle-resolved CFD simulations

open access: yesChimica Techno Acta
Trickle bed reactors with solid catalyst pellets are important and widely used large-scale apparatuses in the chemical and oil refining industries. In order to reduce the effects of poisons on the catalyst bed and to extend the catalyst loading service ...
Ivan A. Mik   +5 more
doaj   +1 more source

Continuous proline catalysis via leaching of solid proline

open access: yesBeilstein Journal of Organic Chemistry, 2011
Herein, we demonstrate that a homogeneous catalyst can be prepared continuously via reaction with a packed-bed of a catalyst precursor. Specifically, we perform continuous proline catalyzed α-aminoxylations using a packed-bed of L-proline.
Suzanne M. Opalka   +2 more
doaj   +1 more source

In Situ Amine Formation to Modulate MOF‐Derived PdIn N‐Doped Carbon Catalysts

open access: yesAdvanced Materials, EarlyView.
An amine‐assisted approach converts PdIn‐MOF into PdIn intermetallic nanoparticles embedded in N‐doped carbon. In situ‐generated amines trigger early Pd nucleation, producing smaller PdIn domains than direct pyrolysis. Amine sterics and basicity tune composition and particle size, while solvent and amine co‐determine textural features.
Gonzalo Egea   +9 more
wiley   +1 more source

Making Catalyst and Preparing Catalyst Bed for Hydrazine Decomposition in Low-Thrust Monopropellant Thrusters [PDF]

open access: yesفناوری در مهندسی هوافضا, 2018
Monopropellant thruster of attitude control system is a requirement for the development and functionalization of satellites in space, which have expensive and high-tech technology.
Mohammad Reza Salimi, Hadiseh Karimaei
doaj  

Process, reactor and catalyst design: Towards application of direct conversion of methane to aromatics under nonoxidative conditions

open access: yesCarbon Resources Conversion, 2019
The Mo/HZSM-5 catalyzed, non-oxidative methane dehydroaromatization reaction provides a promising direct approach for production of benzene as well as naphthalene from CH4 resources and therefore its early industrial application is highly desired.
Zhan-Guo Zhang
doaj   +1 more source

Stable Protein‐Based G‐Quadruplex‐Derived Supramolecular Bioinks as Tunable ECM‐Mimetic Constructs Assembled by Combining Non‐Covalent and Covalent Strategies

open access: yesAdvanced Materials, EarlyView.
Harnessing the synergistic interplay of supramolecular self‐assembly, under macromolecular crowding conditions, and enzymatic‐mediated covalent crosslinking toward a stable protein‐based G‐quadruplex‐derived supramolecular bioink. This bioinspired strategy enables the biofabrication of complex and tunable ECM‐mimetic constructs, providing a platform ...
Vera Sousa   +6 more
wiley   +1 more source

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