thorium phosphate prepared

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Turmeric/polyvinyl alcohol Th(IV) phosphate electrospun fibers

2.2.3. Preparation of hybrid exchanger turmeric/PVA Th(IV) phosphate. Hybrid exchanger PVA Th(IV) phosphate was prepared by procedure adopted by Mohammad et al. [14]. Thorium nitrate (0.1 M) and orthophosphoric acid (0.2 M) solutions were mixed in 1:3 mixing volume ratio with continuous stirring to get a homogeneous …

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Studies in thorium phosphate gels

THORIUM phosphate gels were first prepared by Satya Prakash 1 by directly mixing solutions of thorium nitrate and potassium phosphate. A precipitate which is first …

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Studies on thorium phosphate ion exchanger

Thorium phosphate has been prepared by mixing solutions of 0.1 M Th(NO 3) 4 ·4H 2 O in 1 M nitric acid and 1 M phosphoric acid. Four different thorium phosphate materials were obtained under various conditions with PO 4:Th ratios of 1.9, 2.1, 1.69 and 1.9. Preprative procedures, chemical stability, derivative thermogravimetric analysis …

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SOLVENT EXTRACTION OF THORIUM FROM RARE …

An aqueous solution of thorium was prepared by weighing about 0.10 g of thorium concentrate and dissolving it in 4 M of HNO 3 in a 100-ml volumetric flask at room temperature. A solution of thorium nitrate was prepared by ... Monazite, which is a rare-earth and thorium phosphate mineral ((Ce, La, Nd, Th) PO 4), are the best primary …

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Turmeric/polyvinyl alcohol Th(IV) phosphate electrospun fibers

Turmeric/polyvinyl alcohol (PVA) thorium(IV) phosphate hybrid cation exchange nanofibers were prepared for wastewater treatment along with antimicrobial activity. The physicochemical properties of elec-trospun fibers like thermal stability, surface

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(PDF) Turmeric/polyvinyl alcohol Th(IV) phosphate

ries of inorganic precipitates of thorium phosphate prepared by. mixing (0. 1 M Th(NO. 3).5H. 2. O and 2 M H. 3. PO. 4. in 1:3 ratio) and vary-ing amounts of pol yvinyl alcohol (4, 5 and 6 g ...

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SWLDQPRQD]LWHPLQHUDODFLGSURFHVV 4

45% thorium content in case of ideal optimized whole process. The purification was carried out after the caustafication and leaching with hydrochloric acid followed by the addition of oxalic acid at pH 0.3-0.4 to produce thorium oxalate with 91.68 % purity. Thorium oxalate was transformed to oxide by caustafication then washed and …

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Solubility product of the thorium phosphate hydrogen-phosphate …

The thorium phosphate hydrogen-phosphate hydrate (TPHPH) sample was prepared by wet chemical synthesis [17]; 3.63 g of the prepared thorium nitrate solution …

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Chemical Conditions of Synthesis of Th4(PO4)4P2O7

Thorium phosphate-diphosphate, Th4 (PO4)4P2O7, is obtained, at high temperature (800-1250 °C), for a given ratio r = PO4/Th equal to 3/2 from a thorium …

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Studies on thorium phosphate ion exchanger

Thorium phosphate has been prepared by mixing solutions of 0.1 M Th(NO 3) 4 ·4H 2 O in 1 M nitric acid and 1 M phosphoric acid. Four different thorium phosphate materials were obtained under various conditions with PO 4:Th ratios of 1.9, 2.1, 1.69 and 1.9.Preprative procedures, chemical stability, derivative thermogravimetric analysis …

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Synthesis and characterization of uranium (IV) phosphate

These solid solutions, obtained by precipitation, separation from the mother liquor then drying, will afterwards be heated at high temperature to prepare the thorium-actinide (IV) phosphate-diphosphate β-Th 4− x An x (PO 4) 4 P 2 O 7 ceramics [30].

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Chemical Conditions of Synthesis of Th4(PO4)4P2O7

Thorium phosphate has been prepared by mixing solutions of 0.1 M Th(NO3)4·4H2O in 1 M nitric acid and 1 M phosphoric acid. Four different thorium phosphate materials were obtained under various ...

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Method of preparing a product based on phosphate of thorium …

Process for the preparation of thorium phosphate/diphosphate of formula Th 4 (PO 4) 4 P 2 O 7, wherein a product based on thorium(IV) phosphate is prepared by carrying out the process according to claim 1 using, in stage a), a solution comprising thorium and phosphoric acid and wherein the product based on thorium(IV) phosphate is subjected …

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Studies on thorium phosphate ion exchanger

Abstract Thorium phosphate has been prepared by mixing solutions of 0.1 M Th (NO 3) 4 ·4H 2 O in 1 M nitric acid and 1 M phosphoric acid. Four different thorium …

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Incorporation of thorium in the rhabdophane structure: Synthesis …

Thorium incorporation in the rhabdophane structure as Pr 1-2x Ca x Th x PO 4 ·nH 2 O solid solutions was successfully achieved and resulted in the preparation of a low temperature precursor of the monazite-cheralite type Pr 1-2x Ca x Th x PO 4.The rhabdophane compounds are considered as potential neoformed phases in case of …

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Thorium phosphates, method for preparing same, and use …

This novel thorium phosphate can be prepared from a thorium compound and a phosphating agent either by a wet process, or by a dry process, provided that use is made of quantities of the thorium compound and the phosphating agent corresponding to a molar ratio Th/P from 1/4 to 2/3.

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Removal of lead (II) from aqueous environment by a fibrous ion

A number of samples of polycinnamamide thorium (IV) phosphate were prepared by adding different molar solutions of cinnamamide (0.01–1.0 M) and their sodium and lead ion exchange capacities were determined by column process (Table 1). The cation exchange capacity was found to depend on the concentration of cinnamamide.

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Synthesis of some new thorium phosphates

Some thorium phosphates have been synthesised: caesium–thorium phosphate, barium–thorium phosphate, thorium fluoride phosphate, thorium …

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Synthesis of some new thorium phosphates

Thorium phosphate–diphosphate (TPD), Th 4 ... The same kind of mixture was prepared using sulphuric acid (instead of hydrofluoric acid) with the molar ratio Th 4+:H 3 PO 4:H 2 SO 4 = 2:2:1. After two months, the solids obtained from these syntheses were filtered, washed with de-ionised water, then dried at 120 °C and analysed.

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Mineral Commodity Summaries 2022

Prepared by Madan M. Singh [Contact Daniel J. Cordier, (703) 648–7707, [email protected]] THORIUM (Data in kilograms, gross weight, unless otherwise noted) …

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Fluoride adsorption from aqueous solution by a hybrid thorium phosphate

Present investigation aims to remove fluoride by polycinnamamide thorium (IV) phosphate. Polycinnamamide thorium (IV) phosphate was synthesized by co-precipitation method and was characterized by SEM and FTIR. ... XRD, FT-IR, and TGA techniques were used to characterize the prepared adsorbent. Batch adsorption studies were performed to …

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Adsorption of thorium (IV) ions by metal ion doped ZnO …

Adsorption of thorium (IV) ions by metal ion doped ZnO nanomaterial prepared with combustion synthesis: Empirical modelling and process optimization by response surface methodology (RSM) ... Chen et al. reported that the phosphate rock apatite (PRA) could be a favourable adsorbent for removal of uranium in mining …

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Thorium phosphate

Thorium is most commonly found in the rare-earth thorium-phosphate mineral, monazite, which contains 8% 10% thorium. Current production of thorium is, therefore, linked to the production of monazite, which varies between 5500 and 6500 tonnes per year, with approximately 300 to 600 tonnes of thorium recovered (NEA/IAEA, 2006a).

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Patent 2937621 Summary

A PROCESS FOR THE PRODUCTION OF THORIUM PHOSPHATE (54) French Title: UN PROCEDE DE PRODUCTION DE PHOSPHATE DE THORIUM Status: Allowed: Bibliographic Data (51) International Patent Classification (IPC): C22B 3/46 (2006.01) C01B 25/26 (2006.01) C01B 15/00 ...

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Thorium

Prepared by Daniel J. Cordier [(703) 648–7707, [email protected]] THORIUM (Data in kilograms, gross weight, unless otherwise noted) Domestic Production and Use: The …

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(PDF) Th4(PO4)4P2O7, a New Thorium Phosphate: Synthesis

Thus, phosphate matrixes have been found attractive for their potential use for radwaste storage. These materials have been pointed out because of their resistance to radiation effects 2 and low solubility compared to those of glasses.

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Thorium processing | Uses, Benefits & Risks | Britannica

thorium processing, preparation of the ore for use in various products. Thorium (Th) is a dense (11.7 grams per cubic centimetre) silvery metal that is softer than steel. It has a high melting temperature of approximately 1,750 °C (3,180 °F). Below about 1,360 °C (2,480 °F), the metal exists in the face-centred cubic (fcc) crystalline form ...

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Extraction of Ce (IV), Yb (III) and Y(III) and recovery of some rare

Introduction. Monazite is a phosphate mineral which constitutes one of the main sources of rare earth metals. It also contains thorium and a small amount of uranium which are undesirable because of their radioactivity and therefore must be removed at some point in the monazite processing ideally ahead of the main processing operations …

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Modified acidic leaching for selective separation of thorium, phosphate

The objective of the present work was oriented to develop a technological separation process of phosphate, thorium and rare earth element (REE) concentrates from Egyptian monazite.In this respect, monazite digestion was carried out in sulfuric acid media with low or high acid/monazite ratio. These two ratios were designed to explore the acid …

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Synthesis, characterization and analytical applications of lead (II

So, a polyacrylonitrile thorium (IV) phosphate has been prepared, which possesses a fibrous structure with high mechanical strength and a good ion exchange capacity. Thorium phosphate has been selected because of its fibrous nature already reported earlier [2], [3]. Following pages summarize the synthesis, ion exchange …

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