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Phosphoric acid

Growth and Characterization of Aspirin Crystal in the Phosphoric acid Medium

Growth and Characterization of Aspirin Crystal in the Phosphoric acid Medium

... The powder X–ray diffraction study of aspirin crystalline sample was carried out, using XPERT–PRO X–ray diffractometer with Cu Kα (λ = 1.54060 Å) radiation. The X–ray powder diffraction pattern for aspirin crystal is ...

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Some Aspects of Mechanism of Electropolishing of Copper in Phosphoric Acid

Some Aspects of Mechanism of Electropolishing of Copper in Phosphoric Acid

... wt% phosphoric acid at the applied potential, which leads to a limiting ...wt% phosphoric acid was not glossy, and conventional electropolishing models could not adequately explain the ...

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Enthalpy and free energy of Formation of Diamido and monoamido phosphoric acid.

Enthalpy and free energy of Formation of Diamido and monoamido phosphoric acid.

... . The enthalpy of diamido phosphoric acid is calculated to be -821.9 kJ/mol , and found that reaction (4) is exergonic. This shows that processs of nitrogen containing phosphate inorganic glasses noted in ...

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Research on Dihydrate Calcium Sulphate Crystallization during the Production of Phosphoric Acid by Wet Process

Research on Dihydrate Calcium Sulphate Crystallization during the Production of Phosphoric Acid by Wet Process

... of phosphoric acid ...sulfonic acid and sulfonate of tall oil to control nuclear generation of semihydrate; Japanese like Wei Jingzhi adopt the alkyl benzene sulfonic acid to refrain the ...

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A Ternary Inhibitor for X80 Steel Corrosion in Phosphoric Acid Solution

A Ternary Inhibitor for X80 Steel Corrosion in Phosphoric Acid Solution

... Phosphoric acid is used to derust and degrease on metal surface in certain ...circumstances. Phosphoric acid is a kind of moderate inorganic acid which can cause corrosion damage of ...

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Lipid and Protein Quality of Poultry By-Products Preserved by Phosphoric Acid Stabilization

Lipid and Protein Quality of Poultry By-Products Preserved by Phosphoric Acid Stabilization

... feed-grade phosphoric acid and stored at ambient temperature effectively preserved protein quality, and it produced the most favorable poultry mortality silage for subsequently use as a feed ...feed-grade ...

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Electrochemical characterization of rust converter based on phosphoric acid

Electrochemical characterization of rust converter based on phosphoric acid

... A rust converter based on phosphoric acid hadbeen designed and analyzed for the corrosion of mild steel in neutral and acid media. The corrosion inhibition efficiency of the converter was evaluated ...

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An in-situ Study of Copper Electropolishing in Phosphoric Acid Solution

An in-situ Study of Copper Electropolishing in Phosphoric Acid Solution

... In this study, the working electrode was a copper wire (99.99%) coated with the polyurethane resin. The wire diameter was 0.4 mm. To generate fresh metal surface for each test, a new disposable surgery blade was used to ...

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4 Aminoantipyrine as corrosion inhibitor for zinc in phosphoric acid

4 Aminoantipyrine as corrosion inhibitor for zinc in phosphoric acid

... in phosphoric acid containing 4-aminoantipyrine has been studied at different acid concentrations, inhibitor concentration and ...of acid and the ...

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The Cyclic Voltametric Characteristics of the Interaction Between Phosphoric Acid and Adrenaline

The Cyclic Voltametric Characteristics of the Interaction Between Phosphoric Acid and Adrenaline

... current. The factors, we think, should be the oxyacid and oxyacid radical ion in the three systems, which will interact with adrenaline and produce different impact on the electron transfer properties of adrenaline. The ...

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29% P2O5 Phosphoric Acid Desulphation: Improving the Performance of the Unit of Concentration

29% P2O5 Phosphoric Acid Desulphation: Improving the Performance of the Unit of Concentration

... the phosphoric acid manu- ...the phosphoric acid to be concentrated, amount of barium carbonate, temperature and time, were studied using de- sign of experiment (DOE) methodology with ...

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Optimized Activation of Bentonite for Adsorption of Magnesium and Cadmium from Phosphoric Acid

Optimized Activation of Bentonite for Adsorption of Magnesium and Cadmium from Phosphoric Acid

... industrial phosphoric acid onto 4 samples of clays: crude (a), purified (b), activated (c) and purified-activated (d) bentonite have been studied using a batch ...industrial phosphoric acid; ...

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Effect of Some Organic Aldehydes on the Electropolishing of Copper in Phosphoric Acid

Effect of Some Organic Aldehydes on the Electropolishing of Copper in Phosphoric Acid

... in phosphoric acid is considered as corrosion rate of copper and due to the economic importance of copper there are several researches deals with acceleration and inhibition of this ...

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Influence of Elemental Sulphur, Oxalic Acid, and Phosphoric Acid as Acidulating Agents on Phosphorous Dissolution from Rock Phosphate

Influence of Elemental Sulphur, Oxalic Acid, and Phosphoric Acid as Acidulating Agents on Phosphorous Dissolution from Rock Phosphate

... sulphuric acid because of cost and ...of phosphoric acid produced from sulphuric acid acidulation there are five tons of phosphogypsum ...of acid or alkali, and production of chelating ...

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Electrochemical Corrosion Inhibition of Al-Si Alloy in Phosphoric Acid

Electrochemical Corrosion Inhibition of Al-Si Alloy in Phosphoric Acid

... using the weight loss method. The use of inhibitors for the control of corrosion of metals and alloys which are in contact with aggressive environment is an accepted practice. The use of corrosion inhibitor is one of the ...

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Continuous Melt Suspension Crystallization of Phosphoric Acid

Continuous Melt Suspension Crystallization of Phosphoric Acid

... normally applied in the purification of organic com- pounds [15], such as canola oil [16] and cocoa butter [17], can be performed continuously at low energy consump- tion and high product yield. Suspension ...

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Fermentation of Microalgae Biomass through Mild Acid Pretreatment for Bioethanol Production

Fermentation of Microalgae Biomass through Mild Acid Pretreatment for Bioethanol Production

... using phosphoric acid as the hydrolysis ...The phosphoric acid solution was prepared by diluting concentrated phosphoric acid with distilled water to obtain acid ...

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SEM evaluation of apical intraradicular dentine cleanliness and degree of erosion after the application of three irrigating solutions

SEM evaluation of apical intraradicular dentine cleanliness and degree of erosion after the application of three irrigating solutions

... nitric acid did not remove the smear layer from the apical third of the ...this acid used as irrigating solutions in ...and phosphoric acid have been reported in several studies ...

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Organic dye removal from aqueous media by using acid modified Clinoptilolite

Organic dye removal from aqueous media by using acid modified Clinoptilolite

... Sulfuric acid and phosphoric acid were used to modify the adsorbent surface and increase the adsorption ...sulfuric acid-modified clinoptilolite had higher efficiency in DR23 adsorption than ...

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Balanced NP- And NPK-Fertilizers Based On Purified Ammophos Suspension, Nitrogen Fertilizers And Potassium Chloride

Balanced NP- And NPK-Fertilizers Based On Purified Ammophos Suspension, Nitrogen Fertilizers And Potassium Chloride

... The largest producers of LCF are the United States and Canada. Significant volumes of LCF are used in Western European countries such as Russia, the Great Britain, France, Denmark, Italy, Spain, Belgium, Holland, Poland, ...

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