Synthesis and Characterization of Aluminium Phosphate Nanoparticles

Devamani, R. Hepzi Pramila; Alagar, M.

doi:10.6088/ijaser.0020101078

Cited by 26 publications

(9 citation statements)

References 10 publications

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“…The spectrum showed absorption peak in the range 1200-1300 cm -1 , due to the bending mode of aluminum-oxygen bonds [20]. The broad and weak peak around 2750 cm -1 may indicate the hydroxyl absorption of the aluminum hydroxide appeared in the XRD pattern.…”

Section: Resultsmentioning

confidence: 97%

“…In pH 10 at 3 hours reaction period and 80 mA/cm 2 current density the removal of suspended materials was 100%. In pH 3, in 3 hours reaction period at 80 mA/cm 2 current density the removal of suspended materials was also 100% [16][17][18][19][20][21][22][23]. The chemical oxygen demand, COD in tannery wastewater, was reduced to variable extents at the different parameters of the treatment, but it is still higher the allowed limits, except when the current density was 80 mA for 3 hours period where 955 ppm value was obtained.…”

Section: Resultsmentioning

confidence: 99%

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Treatment of Tannery Wastewater with Nano-Electrocoagulation Process

Osman¹,

Elamin²,

Almalki³

2017

J Environ Anal Toxicol

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Treatment of Tannery Wastewater with Nano-Electrocoagulation Process

Osman¹,

Elamin²,

Almalki³

2017

J Environ Anal Toxicol

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“…It is known that aluminum phosphate (AlPO 4 ) has a structure similar to quartz glass [23], so it is easily embedded in the SiO 2 lattice. Uniform distribution of aluminum phosphate particles in quartz glass is assumed to compact the structure of ceramic materials.…”

Section: One Of the Significant Disadvantages Of Quartz Glassbased Mamentioning

confidence: 99%

Determination of the influence of aluminum phosphate on the properties of quartz ceramics

Karasik

Kozyreva

Dushyn

2021

EEJET

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One of the significant disadvantages of quartz glass-based materials is their tendency to crystallize cristobalite during firing and, as a consequence, a significant deterioration in performance. In order to prevent crystallization of quartz ceramics during sintering, a number of additives are used. However, all known options some disadvantages, namely, relatively low strength values and increased coefficient of linear thermal expansion of products.In this regard, a promising area of research is to study the effect of aluminum phosphate additives on the properties of quartz ceramics. According to the totality of properties, the addition of AlPO4 in an amount of 20 wt % has the most positive effect on the characteristics of quartz ceramics. According to differential thermal analysis, it is noted that up to a temperature of 1,200 °C, no noticeable phase and modification transformations occur in the base mixtures. In the course of the work, it was found that the most appropriate firing mode is as follows: oxidizing medium; the products are immersed in a hot furnace, after being held at the maximum temperature, they are removed from the hot furnace, cooling occurs slowly in the air. The materials obtained in this way are characterized by the following properties: α=31.6·10-7 deg-1; σcomp=153 MPa; P=2.7 %; tgδ and ε (frequency 1010 Hz, temperature 20 °C) 0.001 and 10, respectively. It is noted that the main crystal phase prevailing in the samples is aluminum phosphate. The microstructure of the material is characterized by the presence of a small number of residual pores and a densely sintered shard.The proposed solution will significantly reduce power consumption, improve production performance and increase the basic properties of polyfunctional quartz ceramic products

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“…The band registered between 1647 and 1638 cm −1 corresponds to undissociated water molecules [30]. In this region the stretching and deformation vibration bands of the OH groups of the support also appear [31]; however, because phosphoric acid was used to prepare these materials, the vibrations in the mentioned range could correspond to water molecules associated with phosphate ions P-OH [32,33].…”

Section: Diffuse Reflectance Infrared Fourier Transform Spectra (Drifts)mentioning

confidence: 99%

Effect of Chitosan on the Performance of NiMoP-Supported Catalysts for the Hydrodesulfurization of Dibenzothiophene

Ríos-Caloch¹,

Santes²,

Escobar

et al. 2016

Journal of Nanomaterials

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Chitosan-added NiMoP catalysts supported on alumina and alumina-titania were studied in the hydrodesulfurization (HDS) of dibenzothiophene (DBT). The preparation of catalysts containing Mo (12 wt%), Ni (3 wt%), P (1.6 wt%), and chitosan/nickel = 2 (mol ratio) was accomplished by sequential pore-filling impregnation varying the order of chitosan integration. Materials were characterized by DRIFTS, TPR, TG-DTA, and XPS techniques. The TG-DTA study showed that the nature of the support influences the degradation of chitosan onto the catalytic materials and also influences the HDS of DBT and the product distribution as well. The series of catalysts supported on alumina presented the most remarkable effect of chitosan, in which the OH and NH groups of the organic molecule interact with acid sites of the support weakening the interaction between alumina and deposited metal phases. In all cases, DBT was converted mainly through direct sulfur removal. The catalysts ChP3/A (alumina support impregnated with chitosan in phosphoric acid solution, prior to NiMoP deposition) and ChP4/AT (alumina-titania support impregnated with NiMoP solution, prior to contacting with a solution comprising chitosan and phosphorus) exhibited the best performance in HDS reactions and also showed the highest selectivity in biphenyl formation. Presence of carbonaceous residua on the catalyst’s surface, as shown by XPS, could enhance the HDS activity over the ChP4/AT sample.

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Synthesis and Characterization of Aluminium Phosphate Nanoparticles

Cited by 26 publications

References 10 publications

Treatment of Tannery Wastewater with Nano-Electrocoagulation Process

Treatment of Tannery Wastewater with Nano-Electrocoagulation Process

Determination of the influence of aluminum phosphate on the properties of quartz ceramics

Effect of Chitosan on the Performance of NiMoP-Supported Catalysts for the Hydrodesulfurization of Dibenzothiophene

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