Results 21 to 30 of about 136,476 (299)

Influence of crystalization temperature on morphological properties of dibutylphtalate alumosilicate adsorbents

open access: yesZaštita Materijala, 2017
Alumosilicates have advantages over other adosrbents because they have high adsorption capacity and high selectivity. Due to this fact, the paper investigates the synthesis and characterization of the aluminosilicate materialused as a potential adsorbent
Miladin Gligorić, Zoran Obrenović
doaj   +1 more source

Prediction of Red Mud Bound-Soda Losses in Bayer Process Using Neural Networks [PDF]

open access: yesIranian Journal of Chemical Engineering, 2016
In the Bayer process, the reaction of silica in bauxite with caustic soda causes the loss of great amount of NaOH. In this research, the bound-soda losses in Bayer process solid residue (red mud) are predicted using intelligent techniques.
M. Mahmoudian, A. Ghaemi, H. Hashemabadi
doaj  

The effect of chemical and mineralogical composition of red mud on alkalinity parameters

open access: yesZaštita Materijala, 2017
Red mud is highly alkaline colloidal suspension, which remains after processing bauxite into alumina by Bayer’s proceedings. Despite repeated washing red mud keep strong alkalinity, due to the presence of residual base and a number of alkaline minerals ...
Ljubica Vasiljević, Gordana Ostojić
doaj   +1 more source

Effect of process parameters on the morphology and adsorption properties of nanocrystalline boehmite [PDF]

open access: yesHemijska Industrija, 2014
In the last decade, exploration of transition alumina phases with good adsorption properties has attracted a great research interest from both a fundamental and a practical point of view.
Obrenović Zoran   +4 more
doaj   +1 more source

High-pressure spark plasma sintering of MgO-doped transparent alumina [PDF]

open access: yes, 2012
Transparent alumina doped with MgO is fabricated by spark plasma sintering (SPS) under high pressures. An optimum sintering condition explored by changing the combination of the applied pressure and sintering temperature led to an in-line transmission ...
GRASSO, Salvatore   +6 more
core   +1 more source

Phase and facet-engineering of transition alumina leads to (hydro)thermally stable alumina-supported metal catalysts [PDF]

open access: yes, 2021
Inherent thermal instability of gamma-alumina above 800-900 ⁰C leads to deactivation of noble metal-supported alumina catalysts used in automotive applications.
Konstantin, Khivantsev   +5 more
core   +1 more source

Examination of the influence of treatments and mineral composition on the point of zero charge of red mud

open access: yesZaštita Materijala, 2018
Red mud represents tailings which remains after the processing of bauxite into alumina by Bayer's proceedings. All the elements are present in the red mud are found in the form of different minerals.
Aleksandar Došić, Gordana Ostojić
doaj   +1 more source

Influence of process parameters in ion exchange on the properties of the obtained 5A zeolite powder

open access: yesZaštita Materijala
Zeolite 5A is highly regarded in adsorption processes among zeolites, making it valuable for various commercial applications. It is typically synthesized from 4A zeolite by replacing Na+ ions in the crystal lattice with Ca2+ or Mg2+ ions through an ion ...
Jovana Mitrović   +5 more
doaj   +1 more source

Predictive Flood Susceptibility Modelling with Machine Learning: Insights from The Baitarani River Basin, Odisha [PDF]

open access: yesEPJ Web of Conferences
Floods are among the most destructive natural hazards, causing widespread damage to ecosystems, communities, and critical infrastructure. Accurately understanding the drivers of flooding and identifying areas prone to inundation are essential for ...
Ghose Dillip Kumar   +2 more
doaj   +1 more source

Densification of rare-earth (Lu, Gd, Nd)-doped alumina nanopowders obtained by a sol-gel route under seeding [PDF]

open access: yes, 2009
Rare-earth (RE: Lu, Gd, Nd, 0.10 mol%)-doped alumina nanopowders were prepared by a new sol-gel route using polyhydroxoaluminum (PHA) and RECl(3) Solutions under alpha-alumina (similar to 75 nm) seeding.
Kitajima, Kunio   +4 more
core   +1 more source

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