Results 81 to 90 of about 18,650 (253)

Is selective identification of poorly crystalline aluminum hydroxides in soils of temperate latitude possible?

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, Svetlana Antonova, Jan Dietel   +2 more
wiley   +1 more source

Variabilidade espacial de atributos mineralógicos de um latossolo sob diferentes formas do relevo: I - mineralogia da fração argila Spatial variability of mineralogical attributes of an oxisol under different relief forms: I - clay fraction mineralogy

Revista Brasileira de Ciência do Solo, 2008
A distribuição dos minerais da fração argila depende de condições pedoambientais específicas. O estudo das relações entre atributos desses minerais e locais específicos de sua ocorrência na paisagem torna-se importante para o entendimento das relações ...
Livia Arantes Camargo, José Marques Júnior, Gener Tadeu Pereira, Renata Alves Horvat   +3 more
doaj   +1 more source

Obtaining of transition phases of alumina starting from sodium aluminate in Bayer process [PDF]

Hemijska Industrija, 2011
Transition (active) phases of alumina were synthesized starting from sodium aluminate solution prepared out of Bayer liquor. The neutralisation of sodium aluminate solution was performed by sulphuric acid.
Obrenović Zoran, Filipović Radislav, Milanović Marija, Stijepović Ivan, Nikolić Ljubica M.   +4 more
doaj   +1 more source

Mechanism and Kinetic Parameters of the Thermal Decomposition of Gibbsite Al(OH)3 by Thermogravimetric Analysis

, 2017
In this study, the mechanism and the kinetic parameters of the thermal decomposition of gibbsite Al(OH)3 were studied by differential thermogravimetry technique under non-isothermal conditions, between room temperature and 1200 K at heating rates of 5 ...
D. Redaoui, F. Sahnoune, M. Heraiz, A. Raghdi   +3 more
semanticscholar   +1 more source

In Situ 27Al NMR Spectroscopy of Aluminate in Sodium Hydroxide Solutions above and below Saturation with Respect to Gibbsite.

Inorganic Chemistry, 2018
Aluminum hydroxide (Al(OH)3, gibbsite) dissolution and precipitation processes in alkaline environments play a commanding role in aluminum refining and nuclear waste processing, yet mechanistic aspects underlying sluggish kinetics during crystallization ...
T. Graham, Mateusz Dembowski, Ernesto Martinez-Baez, Xin Zhang, Nicholas R. Jaegers, J. Hu, M. Gruszkiewicz, Hsiu‐Wen Wang, A. Stack, M. Bowden, C. Delegard, G. Schenter, A. Clark, S. Clark, A. Felmy, K. Rosso, C. Pearce   +16 more
semanticscholar   +1 more source

Repeated use of anion‐exchange membranes in soils alters the membrane surface and phosphate‐P exchange capacity

Soil Science Society of America Journal, Volume 90, Issue 1, January/February 2026.
Abstract Anion exchange membranes (AEMs) are widely used to assess soil phosphorus (P) cycling. However, the routine reuse of AEM for soil extractions may impact the surface properties of AEM and thus phosphate‐P exchange. We evaluated changes in AEM surface morphology, chemical composition, and phosphate‐P exchange capacity after varying degrees of ...
Chongyang Li, Finnleigh S. Woodings, Andrew J. Margenot   +2 more
wiley   +1 more source

Caracterização química e mineralógica de agregados de diferentes classes de tamanho de Latossolos Bruno e Vermelho localizados no estado do Paraná Chemical and mineralogical characterization of the different structure size classes of Red-Yellow and Dusky Red Latosols in Paraná, Brazil

Revista Brasileira de Ciência do Solo, 2008
O teor e a forma dos minerais da fração argila são determinantes na definição da morfologia dos agregados do solo. Objetivando estudar a mineralogia da fração argila e as propriedades químicas de diferentes classes de agregados de Latossolos (Latossolo ...
Vander de Freitas Melo, Fernando Henrique Toledo, Rodrigo de Moura, Valmiqui Costa Lima, André Ademir Ghidin   +4 more
doaj   +1 more source

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, Ines Mulder, Diana Hofmann, Friederike Lang, Kenton P. Stutz, Jan Siemens   +5 more
wiley   +1 more source

Mechanistic insights into the anion‐driven suppression of the initial cement reaction of tricalcium aluminate

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, Samir Darouich, Marie Collin, Ratan K. Mishra, Tobias Lange, Joachim Dengler, Torben Gädt   +6 more
wiley   +1 more source

Structure and thermodynamics of platelet dispersions

, 2008
Various properties of fluids consisting of platelike particles differ from the corresponding ones of fluids consisting of spherical particles because interactions between platelets depend on their mutual orientations. One of the main issues in this topic
Frenkel D, Hansen J-P, L. Harnau, Meier H, Ruelle D, Wensink HH   +5 more
core   +1 more source