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Nitrate-citrate sol-gel synthesis of hydrated calcium

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The influence of solvents on sol–gel derived calcium …

2015-10-1 · High purity calcium aluminate (CA) samples were derived by a sol–gel method using aluminium-sec-butoxide (ASB) and calcium nitrate tetrahydrate (CN). In order to facilitate the controllable synthesis process an ethyl acetoacetate (EAA) was used as a chelating agent for ASB (EAA:ASB=3:2). Synthesis was performed using different solvents

Nitrate-Citrate Sol-Gel Synthesis of Hydrated Calcium

Sol-gel technique was used to develop a method for synthesis of hydrated tricalcium aluminate Ca3[Al(OH)6]2 and surface-layered gas-chromatographic sorbents on its basis. The materials obtained were examined by X-ray diffraction analysis, scanning electron microscopy, X-ray fluorescence microanalysis, adsorption porosimetry, and gas chromatography.

Synthesis and characterization of low cost nanosilica from

Synthesis and characterization of low cost nanosilica from sodium silie solution and their appliions in ceramic engobes their aggregation and specific surface area. One example of these methods, production by sol–gel process for rice husk (RH) Synthesis and characterization of some calcium aluminate 10.1016/j.bsecv.2020.07.006.

The influence of solvents on sol–gel derived calcium …

High purity calcium aluminate (CA) samples were derived by a sol–gel method using aluminium-sec-butoxide (ASB) and calcium nitrate tetrahydrate (CN). In order to facilitate the controllable synthesis process an ethyl acetoacetate (EAA) was used as a chelating agent for ASB (EAA:ASB=3:2).

Comparison of solid state and sol¬タモgel derived calcium

sol–gel processing of calcium aluminate has also been highlighted to emphasize here the relevance of the latter. 2. Experimental Synthesis of calcium aluminate precursor by sol–gel route has been discussed in our earlier work along with the preparation of coated graphite by that precursor [14]. The sol–gel

Sol-gel synthesis and sorption properties of calcium

Method for synthesis of calcium aluminate and sorbents based on this compound was developed on its basis of the sol-gel technology. The method makes it possible to obtain the target product with specific surface areas in the range from 7 to 120 m2 g–1. The compounds obtained were characterized by scanning electron microscopy, X-ray phase analysis, and X-ray fluorescence microanalysis.

Coustion synthesis of calcium aluminates - ScienceDirect

1996-10-1 · Commercial calcium aluminate cements for refractory use are known to contain various phases, the hydration behavior of which is interdependent and not fully understood. Hydration studies normally require that pure oxides be synthesized. Solid-state synthesis of single aluminates requires high temperatures and full conversion is not guaranteed.

Synthesis of Calcium Aluminate-Based Luminophores by …

Microwave-assisted sol–gel process was used to synthesize calcium aluminate and luminescent materials based on it, which find wide use in the manufacture of construction materials, alysts, optical emission sources, and display devices. The major processes involved in the formation of crystalline calcium aluminate were identified resorting to powder X-ray diffraction, thermal analysis

The influence of solvents on sol–gel derived calcium …

Calcium aluminate Ca3Al2O6 and phosphors based on it were obtained by sol-gel method. Complex studies were used to identify the dynamics of phase and structural transformations in the synthesis of

Comparison of solid state and sol-gel derived calcium

This paper entails an extended investigation on sol-gel thin film of calcium aluminate (CaAl 2O 4) over graphite flakes that improved their oxidation resistance and water wettability. The commercial preparation of calcium aluminate has been compared with the sol-gel synthesis by differential thermal

Sol-gel synthesis and sorption properties of calcium

Method for synthesis of calcium aluminate and sorbents based on this compound was developed on its basis of the sol-gel technology. The method makes it possible to obtain the target product with specific surface areas in the range from 7 to 120 m2 g–1. The compounds obtained were characterized by scanning electron microscopy, X-ray phase analysis, and X-ray fluorescence microanalysis.

Nitrate-Citrate Sol-Gel Synthesis of Hydrated Calcium

Request PDF | Nitrate-Citrate Sol-Gel Synthesis of Hydrated Calcium Aluminate and Sorption Materials on Its Basis | Sol-gel technique was used to develop a method for synthesis of hydrated

Reaction of Aluminum with Water to Produce Hydrogen

2008-6-26 · The formation of sodium aluminate was observed, as well as the regeneration of sodium hydroxide via the precipitation of aluminum hydroxide. Stockburger et.al. (10) described hydrogen generators in which aluminum was reacted with an aqueous solution of 5.75 M sodium hydroxide.

Sol-gel synthesis and sorption properties of calcium

Request PDF | Sol-gel synthesis and sorption properties of calcium monoaluminate | Method for synthesis of calcium aluminate and sorbents based on this compound was developed on its basis of the

Synthesis of sol-gel derived calcium silie particles and

2019-11-27 · Synthesis of sol-gel derived calcium silie particles and development of a bioactive endodontic cement. Dental Materials ( IF 5.304 ) Pub Date : 2019-11-26 , DOI: 10.1016/j.dental.2019.11.004

Reaction of Aluminum with Water to Produce Hydrogen

2008-6-26 · The formation of sodium aluminate was observed, as well as the regeneration of sodium hydroxide via the precipitation of aluminum hydroxide. Stockburger et.al. (10) described hydrogen generators in which aluminum was reacted with an aqueous solution of 5.75 M sodium hydroxide.

The sol-gel synthesis of calcium aluminate using various

Download Citation | On Dec 1, 2016, Tat''yana V. Belyaninova and others published The sol-gel synthesis of calcium aluminate using various polymerizing agents | Find, read and cite all the research

A low-temperature sol-gel route for the synthesis of …

2012-8-14 · A low-temperature sol-gel route for the synthesis of bioactive calcium silies Yong-Sen Sun a, , Ai-Ling Li a, , Fu-Jian Xu b, , Dong Qiu a, , 1. a Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;

Chelation Aided Sol-Gel Synthesis of Calcium Aluminate

Calcium aluminate (CaAl2O4, CA) is the main crystalline phase of aluminate cement and an important refractory material. The traditional technique of preparing pure calcium aluminates is by solid state reactions of calcium and aluminium oxides. This process takes a lot of time and energy and does not allow the fine control of the phase composition and the microstructure due to limitations of

Preparation and Characteristics of Polyaluminium Chloride

Clay-brine process employing activated clay, NaCl, HCl, and HF as raw materials is the primarily advanced technology to synthesize cryolite in the present industrial grade. However, plenty of byproducts of fluorine-containing waste HCl at the concentration of …

Facile metal-free reduction-based synthesis of pristine

Facile metal-free reduction-based synthesis of pristine and ion-doped conductive mayenite†. Karim Khan * a, Ayesha Khan Tareen b, Sayed Elshahat a, Naseer Muhammad a, Jia Li b, Israa Aboodd a, Luigi Bibbò a, Ashish Yadav a, Rizwan Ur …

Sol-gel synthesis and sorption properties of calcium

2016-6-15 · Method for synthesis of calcium aluminate and sorbents based on this compound was developed on its basis of the sol-gel technology. The method makes it possible to obtain the target product with specific surface areas in the range from 7 to 120 m2 g–1. The compounds obtained were characterized by scanning electron microscopy, X-ray phase analysis, and X-ray fluorescence …

Sol–Gel Synthesis and Characterization of …

2005-4-29 · Sol–Gel Synthesis and Characterization of Alumina–Calcium Hexaaluminate Composites. K. Vishista, Corresponding Author. Department of Ceramic Technology, Anna University, Chennai 600 025, India Calcium nitrate to yield 0–20 vol% calcia was added to the boehmite sol. The boehmite with additives was calcined at 600°C for 3 h.

PAPER OPEN ACCESS Sol-Gel Synthesis of Fluorescent

Calcium aluminate Ca 3 Al 2 O 6 and phosphors based on it were obtained by sol-gel method. Complex studies were used to identify the dynamics of phase and structural . transformations in the synthesis of Ca. 3. Al. 2. O. 6. We used thermal analysis, IR spectroscopy, X-ray phase analysis, scanning electron microscopy and micro-X-ray spectral

The influence of solvents on sol–gel derived calcium …

High purity calcium aluminate (CA) samples were derived by a sol–gel method using aluminium-sec-butoxide (ASB) and calcium nitrate tetrahydrate (CN). …

The influence of solvents on sol–gel derived calcium …

High purity calcium aluminate (CA) samples were derived by a sol–gel method using aluminium-sec-butoxide (ASB) and calcium nitrate tetrahydrate (CN). In order to facilitate the controllable synthesis process an ethyl acetoacetate (EAA) was used as a chelating agent for ASB (EAA:ASB=3:2).

Calcium Oxide Nanoparticles - Nanografi Nano Technology

Calcium oxide (CaO), commonly known as burnt lime or quicklime, is an alkaline earth metal oxide. Calcium is a Block S, Group 2, Period 4 element, while oxygen is a Block P, Period 2 element. Calcium oxide is a white, alkaline, caustic, crystalline solid at room …

Comparison of solid state and sol–gel derived calcium

Abstract This paper entails an extended investigation on sol–gel thin film of calcium aluminate (CaAl 2 O 4 ) over graphite flakes that improved their oxidation resistance and water wettability. The commercial preparation of calcium aluminate has been compared with the sol–gel synthesis by differential thermal analysis (DTA) and X-ray diffraction (XRD) to assess the feasibility of the

Calcium Precursors for the Production of CaO Sorbents for

2009-12-23 · A screening of potential calcium precursors for the production of CaO sorbents for CO2 capture at high temperature was conducted in this work. The precursors studied include microsized calcium carbonate (CC-CaO), calcium hydroxide (CH-CaO), nanosized (<70 nm) calcium carbonate (CC70 nm-CaO), nanosized (<160 nm) calcium oxide (CaO160 nm-CaO), calcium acetate hydrate (CA-CaO), calcium …

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