Results 11 to 20 of about 32,662 (288)

Irreversible Dehydration in Montmorillonite

open access: yesClay Minerals, 1952
In a paper to the Faraday Society (1946), Mering showed that the temperature to which one required to heat montmorillonite to produce irreversible collapse of the c-axis depended on the exchangeable cation. With Na-montmorillonite irreversibility began at about 550°C but with Ca-montmorillonite below 350°C During a study of the liquid phase sorption of
Greene-Kelly, R.
openaire   +2 more sources

Organic Derivatives of Montmorillonite

open access: yesNature, 1952
THE supposed analogy between hydrogen-saturated montmorillonite and a weak organic acid has encouraged several investigators, notably Berger1 and Deuel2–4, to attempt to esterify the montmorillonite acid using standard organo-chemical methods.
Greene-Kelly, R., Norrish, K., Brown, G.
openaire   +2 more sources

Montmorillonite-Based Separator Enables a Long-Life Alkaline Zinc–Iron Flow Battery

open access: yes, 2022
Alkaline zinc–iron flow batteries (AZIFBs) demonstrate great potential in the field of stationary energy storage. However, the reliability of alkaline zinc–iron flow batteries is limited by dendritic zinc and zinc accumulation, which has been treated as ...
Guangyu Liu (521835)   +11 more
core   +1 more source

Proton-Exchanged Montmorillonite With Interlayer Accessibility as a Solid Acid Catalyst for the Upcycling of Polyoxymethylene. [PDF]

open access: yesChemistry
The first microwave‐assistance‐free heterogeneous catalytic upcycling of polyoxymethylene (POM) into valuable cyclic acetals is achieved with a reusable proton‐exchanged montmorillonite (H‐Mont) catalyst. Combining interlayer accessibility with strong acidity, H‐Mont enables efficient, regenerable, and versatile transformations with potentially biomass‐
Noboa JF   +3 more
europepmc   +2 more sources

Reducing Competition of Pepsin in Aflatoxin Adsorption by Modifying a Smectite with Organic Nutrients

open access: yesToxins, 2020
Carcinogenic aflatoxins can be inactivated by smectites (e.g., montmorillonite) through adsorption and degradation. Proteins in gastric fluids can reduce smectite’s adsorption capacity for aflatoxins. The objective of this study was to evaluate the
Ana Luisa Barrientos Velazquez   +1 more
doaj   +1 more source

The effect of Cu and Cu-humic acids on the adsorption of imazethapyr herbicide by montmorillonite clay [PDF]

open access: yesBiotechnologie, Agronomie, Société et Environnement, 2010
Adsorption of imazethapyr, an imidazolinone herbicide, was measured from dilute suspensions onto montmorillonite clay and complexes of montmorillonite with Cu and humic acid.
El Azzouzi, E.   +8 more
doaj  

Study on preparation, structure characterization and antibacterial activity of Andrographis paniculata-modified montmorillonite

open access: yesSiliao yanjiu, 2021
The experiment aimed to prepare Andrographis paniculata-modified montmorillonite, and investigate the antibacterial activity. Andrographolide was extracted by ethanol with ultrasound-assisted extraction to be combined with different types of ...
Lin-ru LI   +7 more
doaj  

Removal of Organic Dye Using Graphene-based Composite: Isotherm and Kinetic Studies [PDF]

open access: yesJournal of Water and Environmental Nanotechnology
In the present study, Graphene oxide (GO) and Graphene oxide-montmorillonite (GO-based Montmorillonite composites) composite was fabricated successfully and used further for the extraction of cationic pollutant, Malachite green (MG) oxalate.
Preeti ., Meena Bhandari, Neeraj Kumari
doaj   +1 more source

Location and migration of cations in Cu2+-adsorbed montmorillonite [PDF]

open access: yes, 2001
Location of Cu2+ ion in Cu2+-adsorbed montmorillonite have been studied by electron paramagnetic resonance (EPR), supplemented by X-ray diffraction (XRD) and differential thermal analysis (DTA).
Xie, Xiande   +7 more
core   +1 more source

Ice nucleation of ammonia gas exposed montmorillonite mineral dust particles [PDF]

open access: yesAtmospheric Chemistry and Physics, 2007
The ice nucleation characteristics of montmorillonite mineral dust aerosols with and without exposure to ammonia gas were measured at different atmospheric temperatures and relative humidities with a continuous flow diffusion chamber. The montmorillonite
A. Salam, U. Lohmann, G. Lesins
doaj  

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