Results 11 to 20 of about 16,483 (254)

Tetradentate copper complex supported on boehmite nanoparticles as an efficient and heterogeneous reusable nanocatalyst for the synthesis of diaryl ethers

open access: yesScientific Reports, 2022
In this work boehmite nanoparticles (BNPs) were prepared through addition of aqueous solution of NaOH to solution of Al(NO3)3·9H2O. Then, the surface of BNPs was modified by (3-chloropropyl)trimethoxysilane (CPTMS) and further tetradentate ligand (MP-bis(
Arida Jabbari   +3 more
doaj   +2 more sources

Shear-induced memory effects in boehmite gels [PDF]

open access: yesJournal of Rheology, 2021
Colloidal gels are formed by the aggregation of Brownian particles into clusters that are, in turn, part of a space-spanning percolated network. In practice, the microstructure of colloidal gels, which dictates their mechanical properties, strongly depends on the particle concentration and on the nature of their interactions.
Sudreau, Iana   +3 more
openaire   +5 more sources

Surface and porosity of nanocrystalline boehmite xerogels [PDF]

open access: yesJournal of Colloid and Interface Science, 2005
Boehmite xerogels are prepared by hydrolysis of Al(OC4H9)3 followed by peptization with HNO3 (H+/Al = 0, 0.07, 0.2). XRD and TEM show that these gels are made of nanosized crystals (5–9 nm in width and 3 nm thick).
Alphonse, Pierre, Courty, Matthieu
core   +7 more sources

Investigation of Fe3O4@boehmite NPs as efficient and magnetically recoverable nanocatalyst in the homoselective synthesis of tetrazoles

open access: yesRSC Advances, 2022
Magnetic boehmite nanoparticles (Fe3O4@boehmite NPs) were synthesized from a hybrid of boehmite and Fe3O4 nanoparticles. At first, boehmite nanoparticles (aluminum oxide hydroxide) were prepared via a simple procedure in water using commercially ...
Parisa Moradi
semanticscholar   +1 more source

The Problem of the Formation of Boehmite and Gibbsite in Bauxite-Bearing Lateritic Profiles

open access: yesMinerals, 2022
The study of a large amount of factual material about the formation conditions of gibbsite or boehmite and their mutual transformations in lateritic bauxites allowed us to solve the problem of boehmite formation and its spatial and genetic relationship ...
V. Mamedov   +4 more
semanticscholar   +1 more source

Synthesis and Characterization of Boehmite Particles Obtained from Recycling: Water Disinfection Application

open access: yesNanomaterials, 2022
We report on the synthesis of boehmite aluminum oxide hydroxide particles with lamellar structure (γ-AlO(OH)) obtained from the recycling of metallic can seals, with the addition of silver nanoparticles (Ag-NPs) reduced by Aloe Vera extract.
Dienifer F. L. Horsth   +7 more
doaj   +1 more source

Radiolysis and Radiation-Driven Dynamics of Boehmite Dissolution Observed by In Situ Liquid-Phase TEM.

open access: yesEnvironmental Science and Technology, 2022
Over the last several decades, there have been several studies examining the radiation stability of boehmite and other aluminum oxyhydroxides, yet less is known about the impact of radiation on boehmite dissolution. Here, we investigate radiation effects
Lili Liu   +9 more
semanticscholar   +1 more source

Effect of pH on the characteristics of boehmite nanostructures synthesized using hydrothermal method [PDF]

open access: yesشیمی کاربردی روز, 2013
In this research, micro/mesoporous boehmite nanostructures were successfully synthesized via hydrothermal route. The size and morphology of boehmite nanostructures could be controlled by adjusting the pH value of the reaction mixture.
Mozaffar Abdollahifar
doaj   +1 more source

Rheological behaviour and spectroscopic investigations of cerium-modified AlO(OH)colloidal suspensions [PDF]

open access: yes, 2011
The rheological behaviour of aqueous suspensions of boehmite (AlO(OH)) modified with different Ce-salts (Ce(NO3)3, CeCl3, Ce(CH3COO)3 and Ce2(SO4)3) was investigated at a fixed Ce/Al molar ratio (0.05).
Bleta, Rudina   +3 more
core   +2 more sources

Ultrasound- and microwave-assisted preparation of lead-free palladium catalysts: effects on the kinetics of diphenylacetylene semi-hydrogenation [PDF]

open access: yes, 2015
The effect of environmentally benign enabling technologies such as ultrasound and microwaves on the preparation of the lead-free Pd catalyst has been studied.
Bonrath, Werner   +6 more
core   +1 more source

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