Characterization of mesoporous alumina particles prepared by spray pyrolysis of Al(NO3)2·9H2O precursor: Effect of CTAB and urea

Kim, Joo Hyun; Jung, Kyeong Youl; Park, Kyun Young; Cho, Sung Baek

doi:10.1016/j.micromeso.2009.08.008

Cited by 51 publications

(19 citation statements)

References 27 publications

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“…[ 157 ] By contrast, the successful preparation of large mesopores γ -alumina mesostructured powder was reported in 2006 by using a [E(B) 75 ]-[EO] 86 block copolymer called KLE which hydrophobic block is stable up to 300 ° C. [ 60 ] In this latter case, the use of thermally stable structuring agents allowed limiting the massive contraction of inorganic matrix observed during the dehydration of AlOOH in Al 2 O 3 . [ 158 ] As a consequence, after calcinations at 700 ° C, the produced Al 2 O 3 materials (cf.…”

Section: Non-silicate Mesostructured Ceramicsmentioning

confidence: 99%

Aerosol Route to Functional Nanostructured Inorganic and Hybrid Porous Materials

Boissière¹,

Grosso²,

Chaumonnot³

et al. 2010

Advanced Materials

339

295

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The major advances in the field of the designed construction of hierarchically structured porous inorganic or hybrid materials wherein multiscale texturation is obtained via the combination of aerosol or spray processing with sol-gel chemistry, self-assembly and multiple templating are the topic of this review. The available materials span a very large set of structures and chemical compositions (silicates, aluminates, transition metal oxides, nanocomposites including metallic or chalcogenides nanoparticles, hybrid organic-inorganic, biohybrids). The resulting materials are manifested as powders or smart coatings via aerosol-directed writing combine the intrinsic physical and chemical properties of the inorganic or hybrid matrices with defined multiscale porous networks having a tunable pore size and connectivity, high surface area and accessibility. Indeed the combination of soft chemical routes and spray processing provides "a wind of change" in the field of "advanced materials". These strategies give birth to a promising family of innovative materials with many actual and future potential applications in various domains such as catalysis, sensing, photonic and microelectronic devices, nano-ionics and energy, functional coatings, biomaterials, multifunctional therapeutic carriers, and microfluidics, among others.

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Section: Non-silicate Mesostructured Ceramicsmentioning

confidence: 99%

Aerosol Route to Functional Nanostructured Inorganic and Hybrid Porous Materials

Boissière¹,

Grosso²,

Chaumonnot³

et al. 2010

Advanced Materials

339

295

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“…Boissière et al [29] applied the spray drying method to prepare alumina mesoporous spheres using AlCl 3 ·6H 2 O as the Al precursor and [E(B)] 75 -[EO] 86 block copolymer as the templating agent. Additionally, Kim et al [30] prepared mesoporous alumina particles via spray pyrolysis using Al(NO) 3 ·9H 2 O and cetyltrimethylammonium bromide (CTAB) as the Al precursor and pore directing agent, respectively. The formation of mesostructures in these synthesis processes was attributed to the use of structure-directing reagents, however, which may limit practical application due to production costs.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous transition alumina with uniform pore structure synthesized by alumisol spray pyrolysis

Liu

2010

Chemical Engineering Journal

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a b s t r a c tMesoporous transition alumina was prepared by spray pyrolysis of an alumisol precursor, without the use of structure-directing reagents. The prepared alumina exhibited a well-defined mesoporous structure with narrow pore size distribution (3.0-4.7 nm). Preparation temperature played a major role in the phase formation and the porosity of prepared alumina. The phase transformation of boehmite to ␥-Al 2 O 3 andAl 2 O 3 was observed at 800 and 1200• C, respectively. An increase in preparation temperature resulted in a decrease in surface area and pore volume and an increase in pore size. Longer residence time promoted the crystallinity of prepared alumina effectively, but it also led to the formation of particles with smaller surface area, lower pore volume, larger pore size, and broader pore size distribution. Additionally, while alumisol concentration had little effect on the surface area, its reduction led to a decrease in pore volume and pore size and caused the formation of bimodal pore size distribution. The as-prepared alumina also exhibited excellent thermal stability, showing great application potential for industry.

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“…In this research used CTABr/Al-Salt in range 1.57-7.85 showed that surface [25] area be decrease from 261 be 241 m 2 /g. It is because increasing density molecule on mesoporous alumina caused close distance between molecule lattice [24].…”

Section: N2 Adsorption-desorptionmentioning

confidence: 99%

Extraction of Alumina from Red Mud for Synthesis of Mesoporous Alumina by Adding CTABr as Mesoporous Directing Agent

et al. 2018

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Characterization of mesoporous alumina particles prepared by spray pyrolysis of Al(NO3)2·9H2O precursor: Effect of CTAB and urea

Cited by 51 publications

References 27 publications

Aerosol Route to Functional Nanostructured Inorganic and Hybrid Porous Materials

Aerosol Route to Functional Nanostructured Inorganic and Hybrid Porous Materials

Mesoporous transition alumina with uniform pore structure synthesized by alumisol spray pyrolysis

Extraction of Alumina from Red Mud for Synthesis of Mesoporous Alumina by Adding CTABr as Mesoporous Directing Agent

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