Results 61 to 70 of about 14,521 (250)
Materials Research, 2007 A new procedure was used to prepare a microcrystalline powder constituted by thin euhedral hexagonal gibbsite plates, 0.2 to 0.6 µm in diameter and 32 nm thick. The powder, fired between 200 and 1000 °C, produced chi and kappa transition aluminas.
Antonio Carlos Vieira Coelho +4 more
doaj +1 more source
Synthesis and Characterization of Boehmites Obtained from Gibbsite in Presence of Different Environments [PDF]
Materials Research, 2016 In this study, results related to boehmite synthesis by hydrothermal processes starting from a Bayer commercial gibbsite are reported. The processes have been conducted from aqueous suspensions with initial acidic or alkaline pH, without or with acetate ...
Ricardo Wilson Nastari Denigres Filho +3 more
doaj +2 more sources
The laser Raman identity of gibbsite pseudomorphous after crocoite from Dundas, Tasmania [PDF]
, 1992 Gibbsite both invests and replaces crocoite in late supergene ores of the Dundas district, Tasmania. The laser Raman spectrum of the gibbsite shows strong, well-developed v-OH stretching bands at about 3370, 3440, 3525, 3620 cm-I, confirming its identity.
Rodgers, KA
core +2 more sources
Soil Science Society of America Journal, Volume 90, Issue 1, January/February 2026.Abstract Aluminum (Al) is one of the most abundant elements in soils. As poorly crystalline Al hydroxides are reactive toward soil organic matter (SOM), they are thought to be involved in SOM stabilization. This is also inferred from correlations between soil organic carbon contents and those of Al extracted by acid oxalate in darkness (AOD), although ...
Thilo Rennert +2 more
wiley +1 more source
Scientia Agricola, 2007 Because weathering of minerals releases chemical elements into the biogeochemical cycle, characterization of their weathering products helps to better model groundwater quality, formation of secondary minerals and nutrient flux through the trophic chain.
Celso Augusto Clemente +1 more
doaj +1 more source
Modification of the simple mass balance equation for calculation of critical loads of acidity. [PDF]
, 1995 Over the last few years, the simple mass balance equation for the calculation of critical loads of acidity has been gradually modified as the underlying critical load concepts have developed and as problems with particular forms of the equation have been
Cresser, M. +7 more
core
Interplay of anisotropy in shape and interactions in charged platelet suspensions
, 2014 Motivated by the intriguing phase behavior of charged colloidal platelets, we investigate the structure and dynamics of charged repulsive disks by means of Monte-Carlo simulations.
Allen M. P. +6 more
core +3 more sources
Thermodynamics of Organic Acid Sorption to Goethite
European Journal of Soil Science, Volume 77, Issue 1, January–February 2026.Instrumental setup (left), experiment‐generated raw heat signal (middle), and model for isothermal titration calorimetry to decipher the thermodynamics of small organic ligand adsorption to mineral surfaces. ABSTRACT Adsorption to minerals is a key mechanism in stabilizing organic carbon in soils.
Alexander Konrad +5 more
wiley +1 more source
Utilizing Imogolite Nanotubes as a Tunable Catalytic Material for the Selective Isomerization of Glucose to Fructose [PDF]
, 2018 The isomerization of glucose to fructose is an important step in the conversion of biomass to valuable fuels and chemicals. A key challenge for the isomerization reaction is achieving high selectivity towards fructose using recyclable and inexpensive ...
Olson, Nathaniel
core
Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.Abstract The hydration process of ordinary Portland cement (OPC) involves intricate interactions among ions in the pore solution, dissolving clinker phases, and precipitating hydrates. Tricalcium aluminate (C3A${\rm C}_3{\rm A}$) shows the highest reactivity of the cement clinker phases during the initial hydration stages of OPC. The kinetic control of
Daniel Axthammer +6 more
wiley +1 more source