Results 41 to 50 of about 3,253 (216)

Adsorption of Methyl Orange on a Novel Palygorskite/UiO-66 Nanocomposite

open access: yesApplied Sciences, 2022
Herein, a novel composite material containing UiO-66 and palygorskite (Pal) clay mineral was prepared using a facile one-pot synthesis process. The material was studied using a variety of techniques and applied as did not affect the structure of the ...
Ioanna A. Vasiliadou   +5 more
doaj   +1 more source

Recent Zeolite Modifications in Bifunctional Catalysts for Carbon Dioxide Hydrogenation to Aromatics: A Minireview†

open access: yesChinese Journal of Chemistry, Volume 44, Issue 17, Page 2933-2949, 1 September 2026.
Thermocatalytic hydrogenation of CO2 to aromatic hydrocarbons represents a sustainable route for high‐value CO2 utilization. Bifunctional catalysts combining metal/metal oxide components with acidic zeolites enable the direct synthesis of BTX aromatics.
Weilin Wang   +4 more
wiley   +1 more source

Improvement of CO2 capture performance of calcium-based absorbent modified with palygorskite

open access: yes, 2016
Limestone can be used for CO2 capture and sequestration (CCS) in flue gas effectively. However, its CCS capability will dramatically decline after several cycles due to the surface "sintering".
Shan, Liyuan   +5 more
core   +1 more source

Formation and Alteration of Magnesite Nodules From Kunwarara, Queensland, Australia, as an Analog to Mg‐Carbonate Formation on Mars

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Magnesite (MgCO3) is a magnesium (Mg) carbonate mineral that records the aqueous environmental conditions of its formation. On Earth, magnesite forms in metamorphic, diagenetic or pedogenic environments, and distinguishing between these environments is critical for understanding the fluid chemistry during magnesite precipitation. Mg carbonates
E. L. Cardarelli   +6 more
wiley   +1 more source

An insight in the structure of a palygorskite from Palygorskaja: Some questions on the standard model

open access: yes, 2017
In this study we analyze in detail a palygorskite from Palygorskaja. This palygorskite is situated in the context of the existing studies using X-ray powder diffraction analysis.
Manuel Sánchez del Río   +11 more
core   +1 more source

Fossils as cultural heritage: Scientific, commercial and legislative issues

open access: yesGeology Today, Volume 42, Issue 5, Page 263-272, September/October 2026.
Fossils are among the principal sources for understanding the history of life through ‘Deep Time’ and can inform projections of biotic responses to environmental change. Despite a widespread recognition of the scientific, historical and communication significance of fossils in our culture, their role as part of our cultural heritage is still far from ...
Federico Fanti   +5 more
wiley   +1 more source

Long‐Distance Aeolian Dust Deposited on the Island of Crete (Greece): Detection, Characterization, and Provenance

open access: yesJournal of Geophysical Research: Earth Surface, Volume 131, Issue 8, August 2026.
Abstract Long‐distance aeolian dust transport represents one of the largest sediment fluxes on Earth, with North Africa being a dominant source. The island of Crete in the Eastern Mediterranean lies within major transport pathways but remains underexplored regarding multi‐proxy fingerprinting of deposited dust.
S. Bitzan   +5 more
wiley   +1 more source

Source‐to‐sink sediment transport reversals during glacial sea‐level lowstands sustain soil formation on pericoastal carbonate terrains

open access: yesSedimentology, Volume 73, Issue 5, Page 1892-1910, August 2026.
ABSTRACT Understanding the processes that drive soil formation is crucial for developing sustainable land‐use strategies, as changing land‐use practices and climate change exacerbate soil erosion. The formation of substantial arable soils on carbonate bedrock requires substantial dust accretion as the underlying bedrock lacks siliciclastic material. In
Daniel Palchan   +3 more
wiley   +1 more source

Palygorskite-bearing fracture fills in the Kinshasa area, DR Congo - an exceptional mode of palygorskite vein development

open access: yes, 2020
Tectonic fractures in Palaeozoic strata of the Kinshasa area, DR Congo, locally host palygorskite-bearing veins and associated calcite occurrences. The palygorskite deposits are typically massive, with a varying degree of alignment of clay particles, a ...
Mees, F.   +6 more
core   +1 more source

Purification of Sepiolite and Palygorskite.

open access: yesJournal of Society of Materials Engineering for Resources of Japan, 1995
Methods of purifying sepiolite-paygorskite series were reviewed and discussed under the two purification categories: extraction of elements and elimination of minerals.A number of previous works focused on the extraction of elements from sepiolite by acid treatment because knowledge gained from basic studies on dissolution kinetics, structural ...
TOMURA, Shinji   +2 more
openaire   +2 more sources

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