Applied Sciences, 2020 In this work, various physicochemical characteristics, e.g., surface properties and mineralogical compositions, of five clays collected from different sites in the Al-Hasa oasis in Saudi Arabia have been investigated.
Ibrahim A. Al-Hawas +2 more
doaj +1 more source
Petroduric and 'petrosepiolitic' horizons in soils of Namaqualand, South Africa Horizontes petrodúricos y "petrosepiolíticos" en suelos de Namaqualand, Suráfrica Horizontes petrodúricos e petrosepiolíticos em solos de Namaqualand, África do Sul [PDF]
Spanish Journal of Soil Science, 2012 <p>Indurated, light-coloured 'sepiocrete' horizons have been found in Namaqualand Calcisols and Durisols. These horizons resembled calcrete but were non- to only mildly calcareous, resisted slaking in acid and alkali, and often broke with
Michele Louise Francis +3 more
doaj +1 more source
Adsorption of Methyl Orange on a Novel Palygorskite/UiO-66 Nanocomposite
Applied 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
Nanocrystalline TiO2 and halloysite clay mineral composite films prepared by sol-gel method:Synergistic effect and the case of silver modification to the photocatalytic degradation of basic blue- 41 azo dye in water [PDF]
, 2014 Tubular halloysite clay mineral and nanocrystalline TiO2 were incorporated in the preparation of nanocomposite films on glass substrates via sol-gel method at 450 °C.
Kaplani, E. +4 more
core
The geochemistry of gem opals as evidence of their origin [PDF]
, 2008 International audienceSeventy-seven gem opals from ten countries were analyzed by inductively coupled plasma-mass spectrometry (ICP-MS) through a dilution process, in order to establish the nature of the impurities. The results are correlated to the mode
Bouhnik-Le Coz, Martine +6 more
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Advanced Functional Materials, Volume 35, Issue 47, November 19, 2025.Biopolymers are sustainable, biodegradable alternatives to petroleum‐based plastics for food packaging. Its adoption is often limited by poor mechanical strength, barrier properties, and improved thermal stability through the incorporation of nanofillers.
Himakshi Baishya +2 more
wiley +1 more source
Constraints on alluvial clay mineral assemblages in semiarid regions. The Souss Wadi Basin (Morocco, Northwestern Africa) [PDF]
, 2005 Illite, chlorite and kaolinite, resulting directly from substratum weathering, dominate the clay assemblages recorded in altered rocks and soils of the Souss Wadi watershed.
Bouchaou, L., Elmouden, A., Snoussi, M.
core +3 more sources
Palygorskite from Padasjoki, southern Finland
Bulletin of the Geological Society of Finland, 1981 Monoclinic palygorskite with the unit cell a0 = 12.689 Å, b0 = 17.845 Å, c0 = 5.119 Å and ß = 91.22° has been found at Padasjoki, southern Finland. The mineral is thought to be of hydrothermal origin. Monoclinic symmetry is connected with an ordered Mg-Al substitution, although owing to the low Δd121‒121 value observed a low degree of ordering is ...
K. Lindqvist, I. Laitakari
openaire +2 more sources
Selectivity Control of Catalysts Towards Biomass‐Derived Lactic Acid
Carbon and Hydrogen, Volume 27, Issue 4, Page 420-443, November 2025.This review introduces a comprehensive overview of a one‐pot process for producing lactic acid from biomass, focusing on synchronized catalytic control to enhance selectivity. ABSTRACT The conversion of biomass into lactic acid is essential for meeting industrial demand sustainably, alleviating resource shortages and environmental issues with benefits ...
Ying Yang +3 more
wiley +1 more source
The surface energy of palygorskite
Powder Technology, 2007 Abstract An average value for the surface energy ( γ¯ S ) of palygorskite was determined from experimental data of spreading pressure, the surface tension of water and its contact angle using a formula based on the combination of the Young equation with a general equation of pair interaction. The value found is 226.6 mJ m − 2 .
Helmy, Ahmed K. +2 more
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