Results 21 to 30 of about 485,699 (306)

Physicochemical properties and antibacterial activity of Pt nanoparticles on TiO2 nanotubes as electrocatalyst for methanol oxidation reaction

open access: yesResults in Chemistry, 2022
TiO2 nanotubes were prepared electrochemically as pure Ti sheet in 0.5% HF anodized and annealed under nitrogen acquiring the TiO2 NTs-N2 support. By chemical deposition method using NaBH4 as reducing agent, platinum was deposited on TiO2 NTs-N2 support ...
Yasmin M.S. Jamil   +2 more
doaj   +1 more source

CVD nano-coating of carbon composites for space materials atomic oxygen shielding [PDF]

open access: yes, 2017
The present work analyzes the possibility to employ carbon nanostructures as a basic material to prevent the erosion effects of atomic oxygen suffered by the carbon fiber reinforced polymeric material used in low earth orbit space environment.
Delfini, Andrea   +6 more
core   +1 more source

Role of the synthesis route on the properties of hybrid LDH-graphene as basic catalysts [PDF]

open access: yes, 2017
Layered double hydroxides (LDH or HT) or their derived mixed oxides present marked acid-base properties useful in catalysis, but they lead to agglomerate inducing a weak accessibility to the active sites.
Alvarez, Mayra G   +3 more
core   +2 more sources

Co-Mn-Al mixed oxides promoted by K for direct NO decomposition: Effect of preparation parameters [PDF]

open access: yes, 2019
Fundamental research on direct NO decomposition is still needed for the design of a sufficiently active, stable and selective catalyst. Co-based mixed oxides promoted by alkali metals are promising catalysts for direct NO decomposition, but which ...
Balabánová, Jana   +13 more
core   +2 more sources

Precipitated K-promoted Co-Mn-Al mixed oxides for direct NO decomposition: Preparation and properties [PDF]

open access: yes, 2019
Direct decomposition of nitric oxide (NO) proceeds over Co-Mn-Al mixed oxides promoted by potassium. In this study, answers to the following questions have been searched: Do the properties of the K-promoted Co-Mn-Al catalysts prepared by different ...
Balabánová, Jana   +10 more
core   +2 more sources

Heterogeneous synthesis of glycerol carbonate from glycerol and dimethyl carbonate catalyzed by LiCl/CaO

open access: yesJournal of Saudi Chemical Society, 2019
In this article, a CaO-based catalyst was prepared by impregnating chloride salts on CaO to develop a highly efficient heterogeneous catalyst for the synthesis of glycerol carbonate (GC) from glycerol and dimethyl carbonate.
Ying Tang   +5 more
doaj   +1 more source

Zeolites as Acid/Basic Solid Catalysts: Recent Synthetic Developments [PDF]

open access: yesCatalysts, 2019
The zeolites are porous solid structures characterized by a particular framework of aluminosilicates, in which the incorporation of the Al+3 ions generates an excess of negative charge compensated by cations (usually alkali or alkali earth) or protons.
Verdoliva Valentina   +2 more
openaire   +3 more sources

Hydrogen production by methanol steam reforming on NiSn/MgO-Al 2O3 catalysts: The role of MgO addition [PDF]

open access: yes, 2011
The effect of the magnesia loading on the surface structure and catalytic properties of NiSn/MgO-Al2O3 catalysts for hydrogen production by methanol steam reforming has been investigated. The catalysts have been obtained by impregnation of γ-Al2O3 by the
Bobadilla Baladrón, Luis Francisco   +7 more
core   +1 more source

Mechanistic investigations of the asymmetric hydrosilylation of ketimines with trichlorosilane reveals a dual activation model and an organocatalyst with enhanced efficiency. [PDF]

open access: yes, 2017
Structural probes used to help elucidate mechanistic information of the organocatalyzed asymmetric ketimine hydrosilylation have revealed a new catalyst with unprecedented catalytic activity, maintaining adequate performance at 0.01 mol% loading.
A. T. Reeder   +33 more
core   +1 more source

Alkaline Earth Metal Oxide Supported on Zeolite as a Heterogenous Basic Catalyst for Clean Fuel (Biodiesel) Production: A Mini Review [PDF]

open access: yesE3S Web of Conferences
The depletion of fossil fuel reserves, worsening greenhouse gas effects, and global warming issues have driven the development of renewable energy sources, such as biodiesel.
Ulfa Nurcahyani Maria, Sumari Sumari
doaj   +1 more source

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