Mechanism of thermal decomposition and γ-pyrolysis of aluminum nitrate nonahydrate [Al(NO3)3·9H2O]

1998 ◽  
Vol 237 (1-2) ◽  
pp. 183-186 ◽  
Author(s):  
E. El-Shereafy ◽  
M. M. Abousekkina ◽  
A. Mashaly ◽  
M. El-Ashry
Keyword(s):  
Thermal Decomposition ◽  
Aluminum Nitrate ◽  
Aluminum Nitrate Nonahydrate ◽  
Mechanism Of Thermal Decomposition ◽  
Nitrate Nonahydrate

scholarly journals In Situ Synthesis of Alumina Nanoparticles in a Binary Carbonate Salt Eutectic for Enhancing Heat Capacity

Nanomaterials ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2131
Author(s):  
Yousof Nayfeh ◽  
Syed Muhammad Mujtaba Rizvi ◽  
Baha El Far ◽  
Donghyun Shin
Keyword(s):  
Thermal Decomposition ◽  
Heat Capacity ◽  
Electron Microscope ◽  
Aluminum Nitrate ◽  
Alumina Nanoparticles ◽  
Al2o3 Nanoparticles ◽  
Aluminum Nitrate Nonahydrate ◽  
Nitrate Nonahydrate ◽  
Carbonate Salt

A binary carbonate salt eutectic (Li2CO3-K2CO3)-based nanofluid was in situ synthesized by mixing with a precursor material, aluminum nitrate nonahydrate (Al(NO3)3·9H2O). Thermal decomposition of the precursor was successfully carried out to synthesize alumina (Al2O3) nanoparticles at 1 wt.% concentration. A thermogravimetric analysis (TGA) confirmed a complete thermal decomposition of aluminum nitrate nonahydrate to alumina nanoparticles. A transmission electron microscope (TEM) was employed to confirm the size and shape of the in situ formed nanoparticles; the result showed that they are spherical in shape and the average size was 28.7 nm with a standard deviation of 11.7 nm. Electron dispersive X-ray spectroscopy (EDS) confirmed the observed nanoparticles are alumina nanoparticles. A scanning electron microscope (SEM) was employed to study microstructural changes in the salt. A differential scanning calorimeter (DSC) was employed to study the heat capacity of the in situ synthesized nanofluid. The result showed that the heat capacity was enhanced by 21% at 550 °C in comparison with pure carbonate salt eutectic. About 10–11 °C decrease of the onset melting point of the binary carbonate salt eutectic was observed for the in situ synthesized nanofluids.

Purification of Aluminum Nitrate Nonahydrate by Melt Crystallization

2011 ◽  
Vol 44 (2) ◽  
pp. 105-109 ◽  
Author(s):  
Mizuki Kumashiro ◽  
Yoshinori Izumi ◽  
Takuya Hoshino ◽  
Yusuke Fujita ◽  
Izumi Hirasawa
Keyword(s):  
Aluminum Nitrate ◽  
Melt Crystallization ◽  
Aluminum Nitrate Nonahydrate ◽  
Nitrate Nonahydrate

Separation of Solid Impurity by Melt Crystallization of Aluminum Nitrate Nonahydrate

2011 ◽  
Vol 34 (4) ◽  
pp. 525-529 ◽  
Author(s):  
M. Kumashiro ◽  
T. Hoshino ◽  
Y. Izumi ◽  
Y. Fujita ◽  
I. Hirasawa
Keyword(s):  
Aluminum Nitrate ◽  
Melt Crystallization ◽  
Aluminum Nitrate Nonahydrate ◽  
Nitrate Nonahydrate

scholarly journals Karakterisasi dan Uji Efektivitas Allophane-Like untuk Adsorpsi Ion Logam Tembaga (Cu)

2018 ◽  
Vol 14 (2) ◽  
pp. 202
Author(s):  
Pranoto Pranoto ◽  
Tri Martini ◽  
Deta Agustin Rachmawati
Keyword(s):  
Surface Area ◽  
Contact Time ◽  
Metal Ion ◽  
Xrd Analysis ◽  
Aluminum Nitrate ◽  
Solution Ph ◽  
Aluminum Nitrate Nonahydrate ◽  
Batch System ◽  
Nitrate Nonahydrate ◽  
Different Characteristics

<p>Telah dilakukan penelitian karakterisasi dan uji efektivitas <em>allophane-like</em> untuk adsorpsi ion logam tembaga (Cu). <em>Allophane-like</em> dibuat dengan mencampurkan larutan <em>Tetraethyl Orthosilicate</em> (TEOS) dan <em>Aluminum Nitrate Nonahydrate</em> [Al(NO<sub>3</sub>)<sub>3</sub>.9H<sub>2</sub>O] dengan perbandingan 0,5; 0,75; 1; 1,25 dan 1,5. Proses pencampuran dilakukan penambahan NaOH secara bertahap dan dilakukan pengadukan serta pemanasan. Penambahan NaOH dilakukan dengan membuat perbandingan NaOH dan Campuran TEOS dan Al(NO<sub>3</sub>)<sub>3</sub>.9H<sub>2</sub>O 3:1. pH campuran larutan yang diperoleh diukur dan pH larutan dibuat menjadi asam (pH 3-4). <em>Allophane-like</em><em> </em>dikarakterisasi dengan spektroskopi infra merah (FTIR), XRD, keasaman, dan luas permukaan. Uji adsorpsi terhadap ion logam tembaga (Cu) dilakukan pada variasi perbandingan TEOS dan Al(NO<sub>3</sub>)<sub>3</sub>.9H<sub>2</sub>O 0,5; 0,75; 1; 1,25 dan 1,5, pH larutan tembaga (Cu) 3-7 serta waktu kontak 30-120 menit dengan sistem <em>batch</em>. Hasil penelitian diketahui bahwa <em>allophane-like </em>memiliki gugus fungsi yang sama dengan <em>allophane-</em><em>alam </em>yang ditunjukkan dengan data FTIR yaitu memiliki puncak yang sama pada 3431-3252; 1631; 1071; 785; dan 562-457 cm<sup>-1</sup>. Hasil analisa XRD, keasaman dan luas permukaan menunjukkan karakteristik yang berbeda. Kondisi adsorpsi ion logam tembaga (Cu) terjadi pada variasi perbandingan TEOS dan Al(NO<sub>3</sub>)<sub>3</sub>.9H<sub>2</sub>O 1,5, pH 6, waktu kontak 120 menit, persentase penyerapan 41,79% dan kapasitas adsorpsi 0,97865 mg/g.</p><p><strong>Characterization and Effectivity of </strong><strong>Allophane-Like </strong><strong>in</strong><strong> </strong><strong>the Adsorption of</strong><strong> </strong><strong>Metal Ion of Copper (Cu).</strong> The characterization and effectivity testing of allophane-like for adsorption copper (Cu) metal ion has been studied. Allophane-like was prepared by mixing a solution of Tetraethylorthosilicate (TEOS) and Aluminum Nitrate nonahydrate [Al(NO<sub>3</sub>)<sub>3</sub>.9H2O] using ratio of 0.5; 0.75; 1; 1.25 and 1.5. The mixing process was done gradually adding NaOH and stirring and heating. The addition of NaOH was done by making a comparison between NaOH and mixture of TEOS dan Al(NO<sub>3</sub>)<sub>3</sub>.9H<sub>2</sub>O in 3:1. The pH of the mixture solution was measured and made acidic solution (pH 3-4). Allophane-like was characterized by infrared spectroscopy (FTIR), XRD, acidity, and surface area. The adsorption evaluation of copper (Cu) metal ion was done on the variation of the composition of TEOS dan Al(NO<sub>3</sub>)<sub>3</sub>.9H<sub>2</sub>O in 0.5; 0.75; 1; 1.25 and 1.5, the pH of a solution of copper (Cu) 3-7 and contact time of 30-120 minutes in batch system. The results revealed that the allophane-like has the same functional group with nature allophane indicated by the FTIR data that has the same peak at 3431-3252; 1631; 1071; 785; and 562-457 cm<sup>-1</sup>. XRD analysis results, acidity and surface area showed different characteristics. The best conditions adsorption of copper (Cu) metal ion occured at the composition of TEOS dan Al(NO<sub>3</sub>)<sub>3</sub>.9H<sub>2</sub>O in 1.5, pH 6, the contact time of 120 minutes, the absorption percentage of 41.79% and adsorption capacity of 0.97865 mg/g.</p>

Reaction Between Aluminum Nitrate Nonahydrate and Tetraethoxysilane in Ethanol

1995 ◽  
Vol 16 (1) ◽  
pp. 31-50 ◽  
Author(s):  
Johan Sjöblom ◽  
Stig E. Friberg ◽  
Ali Amran
Keyword(s):  
Aluminum Nitrate ◽  
Aluminum Nitrate Nonahydrate ◽  
Nitrate Nonahydrate

Development of Aluminum Nitrate Nonahydrate and Optimization of Various Reaction Parameters

2013 ◽  
Vol 38 (7) ◽  
pp. 1749-1755 ◽  
Author(s):  
Fadia Shaheen ◽  
Wajid Ali Shah ◽  
Muhammad Irfan ◽  
Bakht Bahadur Rana ◽  
Muhammad Farooq ◽  
...  
Keyword(s):  
Aluminum Nitrate ◽  
Reaction Parameters ◽  
Aluminum Nitrate Nonahydrate ◽  
Nitrate Nonahydrate

scholarly journals Ceramic Processing of Silicon Carbide Membranes with the Aid of Aluminum Nitrate Nonahydrate: Preparation, Characterization, and Performance

Membranes ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 714
Author(s):  
Esra Eray ◽  
Victor Manuel Candelario ◽  
Vittorio Boffa
Keyword(s):  
Silicon Carbide ◽  
Pore Size ◽  
Mechanical Stability ◽  
Sintering Temperature ◽  
Pure Water ◽  
Aluminum Nitrate ◽  
Membrane Properties ◽  
Basic Medium ◽  
Aluminum Nitrate Nonahydrate ◽  
Nitrate Nonahydrate

The development of a low-cost and environmentally-friendly procedure for the fabrication of silicon carbide (SiC) membranes while achieving good membrane performance is an important goal, but still a big challenge. To address this challenge, herein, a colloidal coating suspension of sub-micron SiC powders was prepared in aqueous media by employing aluminum nitrate nonahydrate as a sintering additive and was used for the deposition of a novel SiC membrane layer onto a SiC tubular support by dip-coating. The sintering temperature influence on the structural morphology was studied. Adding aluminum nitrate nonahydrate reduced the sintering temperature of the as-prepared membrane compared to conventional SiC membrane synthesis. Surface morphology, pore size distribution, crystalline structure, and chemical and mechanical stability of the membrane were characterized. The membrane showed excellent corrosion resistance in acidic and basic medium for 30 days with no significant changes in membrane properties. The pure water permeance of the membrane was measured as 2252 L h−1 m−2 bar−1. Lastly, the final membrane with 0.35 µm mean pore size showed high removal of oil droplets (99.7%) in emulsified oil-in-water with outstanding permeability. Hence, the new SiC membrane is promising for several industrial applications in the field of wastewater treatment.

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