A facile route is reported for the in situ formation of three-dimensionally structured hierarchical Co-Al layered double hydroxide (CoAl-LDH) crystals on a boehmite surface ([email protected]) via the dissolution of boehmite followed by the coprecipitation of Co and Al ions on the boehmite surfa...

High efficiency conversion of cellulose to 5-hydroxymethylfurfural (HMF) remains a challenge today. A simple solid acid catalyst Boehmite (γ-AlOOH) with high hydrothermal stability was prepared and used as sole catalyst for the direct conversion of cellulose into HMF in mixed reaction solvents ...

Boehmite nanoparticles are not air or moisture sensitive; therefore, they were prepared in water at room temperature using inexpensive materials, without inert atmosphere, by a very simple and inexpensive procedure. When the surface of boehmite nanoparticles was modified by N,N,N′,N′-tetraethy...

Boehmite nanoparticles are aluminum oxide hydroxide (γ‐AlOOH) particles, which has large specific surface area (>120 m2 g−1) and can be prepared using an inexpensive procedure in water. Herein, we present an economical, simple, and environmentally friendly route for the preparation of a copper...

Alumina has a variety of technological uses and has been utilized in many fields due to its versatility and abundance. The properties of aluminas, such as pore size, acid site concentration, and the amount of adsorbed water, can be tailored for a specific application using a variety of synthetic...

Conversion of gibbsite to boehmite as a precursor for many aluminum oxide materials was widely concerned. Herein, the steam-assisted crystallization (SAC) method was conducted to synthesis the boehmite from gibbsite. The transformation behavior of gibbsite to boehmite treated at 155, 165, 175, a...

Oxidation layers that develop on an aluminum surface can cause changes in the surface wettability. When the aluminum surface is used as a heating surface, these changes result in inconsistencies in the nucleate boiling heat transfer performance and critical heat flux (CHF). Data is presented in ...

The single phase nanocrystalline boehmite is obtained for the first time at room temperature by a facile hydrolysis of Bayer liquor. Mesoporosity in boehmite powders was constructed using the glucose as a template. As-synthesized boehmite powders have high surface area (above 350 m2/g) and the a...

Boehmite nanoplates and Eu3+-doped boehmite nanoplates were synthesized by a facile hydrothermal reaction. And the boehmite nanoparticles behave as plate-like in morphology and have a small size about 59 nm. Those nanoplates could be effectively excited by near-UV light in the range of 360 nm to...

Precursor film method was used to prepare highly permeable ceramic microfiltration membranes in this work. The performance of alumina microfiltration membranes was improved by adding boehmite sol in the membrane precursor film. With increasing the boehmite sol content, the effective average pore...

The application of alumina ceramics is limited due to their expensive raw materials and high sintering temperatures. In this research, low cost bauxite-based ceramics having a strength similar to alumina ceramics were successfully prepared, using two different types of pyrolusite and dolomite co...

Lateritic bauxites in the coastal lowlands of Suriname form part of a belt along the northern margin of the Guiana Shield that has long been one of the world's major bauxite producing regions. The Surinamese deposits, many of which with an extensive mining history, originated on Tertiary si...

The presence of trace concentrations of mercury in bauxite is a potential environmental concern in the Bayer alumina refining process. An understanding of the geochemical speciation of mercury in bauxite provides insight into the behavior of mercury in the Bayer process. The speciation of mercur...

Pyrite inside bauxite could be oxidized into soluble S-containing ions by electrolysis, and thus achieving bauxite desulfurization by using filtration. However, S-containing ions in electrolyte had some corrosion effects on electrode, especially for anode. In this work, six kinds of traditional ...

The aim of this study is to improve the fundamental properties of refractory bauxite to promote its further application in the heat-resistant asphalt pavement technology. A method of coating refractory bauxite in an organosilicon solvent is proposed. The surface coating effects of different orga...

In order to find potential links in bauxite international trade and help bauxite trading countries find new partners as well as diversify trading partners. A link prediction approach was used to find potential bauxite trade links from the perspective of the topological relationship of trade netw...

During the Bayer process for alumina production, the molecular formula of the bauxite residue is approximately equivalent to Na2O·Al2O3·1.7SiO2·nH2O. This means that 1 kg of SiO2 in bauxite will produce 1 kg of Al2O3 and 0.608 kg of Na2O in bauxite residue. Thus, the extraction efficiency of ...

Bauxite and bauxite residue, a by-product of alumina production, were studied using a combination of microanalytical techniques — electron microprobe wavelength dispersive spectrometry, laser ablation inductively coupled plasma mass spectrometry and μ-Raman spectroscopy. The aim of the work wa...

The Poci bauxite deposits in western Henan, China, are hosted in the lower member of Upper Carboniferous Benxi Formation, unconformably overlying upon the paleokarst surface of the Ordovician Majiagou Formation. The orebodies comprise a high-grade bauxite horizon (characterized by the associatio...

Bauxites and Fe laterites were formed on Neogene volcanics from Fongo-Tongo region of the highlands of western Cameroon, and are distributed on plateaus, slopes and downslope surfaces. Bauxitic profiles result from intense in-situ weathering of trachytes that implied depletion of silica and labi...