Effect of accelerators on thoria based nuclear fuels for rapid and quantitative pyrohydrolytic extraction of F− and Cl− and their simultaneous determination by ion chromatography

Pandey, Ashish; Kelkar, Anoop; Singhal, R. K.; Baghra, Chetan; Prakash, Amrit; Afzal, Muhammad; Panakkal, J.P.

doi:10.1007/s10967-012-1672-7

Cited by 14 publications

(3 citation statements)

References 11 publications

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“…The small amounts of Fretained in zeolite can be removed by pyrolydrolytic extraction techniques, which are commonly employed to remove trace quantities of Ffrom glasses, rocks and minerals and raw materials or products in some industrial processes. 41,42 Interactions between F and Al atoms in the various intermediates species formed during the crystallization process were further studied by a 2D 19 F- 27 Al heteronuclear correlation (HETCOR) NMR technique ( Figure 5c). 39,43 At the initial stage of the crystallization process no correlation was detected, as shown in Figure 5c (t = 0 h).…”

Section: The Proposed Mechanism Of Crystallizationmentioning

confidence: 99%

Seed- and solvent-free synthesis of ZSM-5 with tuneable Si/Al ratios for biomass hydrogenation

et al. 2020

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Section: The Proposed Mechanism Of Crystallizationmentioning

confidence: 99%

Seed- and solvent-free synthesis of ZSM-5 with tuneable Si/Al ratios for biomass hydrogenation

et al. 2020

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“…49 Thorium oxide, an important nuclear material, is a refractory material and difficult to pyrohydrolyse. A pandey et al 50 had studied the pyrohydrolytic behaviour of thoria using different accelerators (V 2 O 5 , WO 3 and MoO 3 ). An application of…”

Section: Pyrohydrolysis In Nuclear Industrymentioning

confidence: 99%

Pyrohydrolysis, a clean separation method for separating non-metals directly from solid matrix

Vg¹,

Jeyakumar²

2018

OAJS

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Pyrohydrolysis is a sample preparation technique widely employed for the separation of fluorine, chlorine, bromine, iodine, boron and sulphur from solid samples which include refractive materials that are difficult to dissolve. There is a growing interest in the application of this technique to samples of diverse nature. Pyrohydrolysis is based on the principle that pulverization of a soild sample due to the combined action of heat and steam at high temperature produces volatile compounds of the analytes which are trapped in an alkaline solution for subsequent analysis. Studies reported in the recent past have investigated the effect of various pyrohydrolysis conditions required to pulverise the matrix as well as to convert the analytes into their volatile oxides. Hence, the physico-chemical investigation on one type of the sample is different from the other and such information is very useful while dealing with a new material for its pyrohydrolysis. This mini review is an attempt to highlight a few pyrohydrolytic separations which have significant importance.

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“…Over the years, a number of analytical techniques were developed and employed for the detection of metal ions. These includes atomic absorption spectroscopy (AAS) [11][12][13], ion chromatography (IC) [14,15], inductively coupled plasma mass spectrometry (ICP-MS) [16,17], thermometric titration method [18], pH electrode [19]etc. However, aforementioned techniques suffer from one and/or more drawbacks such as tedious procedures for sample preparation, sophisticated instrumentation, requirement of skilled manpower and lack of achievability and practicability.…”

Section: Introductionmentioning

confidence: 99%

Thiadiazole Functionalized Salicylaldehyde-Schiff Base as a pH-responsive and chemo-reversible “Turn-Off” fluorescent probe for selective cu (II) detection: Logic Gate Behaviour and Molecular Docking Studies

et al. 2022

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A novel thiadiazole functionalized schiff base chemoreceptor (E)-2,4-dichloro-6-(((5-mercapto-1,3,4thiadiazol-2-yl)imino)methyl)phenol (SB-1) has been synthesized and characterized spectroscopically by using various techniques. Its photophysical behaviour was scanned towards a variety of metal ions in mixed aqueous media. The chemosensor (SB-1) displayed excellent selectivity towards Cu 2+ ion through uorescent diminishment (turn-off phenomenon). Colorimetric analyses showed a rapid colour change from yellow to dark red under visible light upon addition of Cu 2+ ions. Interestingly, the original yellow colour reappeared back instantly after the addition of EDTA 2anions, thus con rming the reversible nature of SB-1. Competitive experiments validated no interference from the other co-existing metal ions in the recognition process of SB-1 towards Cu 2+ ion. Job's plot con rmed 1:1 binding stoichiometry between SB-1 and Cu 2+ ion with the binding constant value of 3.87×10 4 M -1 . The limit of detection was determined to be 1.01×10 -7 M suggesting good sensitivity of SB-1 towards Cu 2+ ions. Furthermore, pH-dependent UV-Vis spectral behaviour of SB-1 con rmed that it could act as an effective optical pH-sensor for highly acidic environment as well. Portable nature of probe SB-1 was explored by fabricating "easy-to-use" paper test strips, which allow robust and rapid detection of Cu 2+ ions. Based on the multi-responsive properties of SB-1, a 'NOR' logic gate was constructed by applying Cu 2+ and EDTA 2as chemical inputs (ln1: Cu 2+ , ln2: EDTA 2-) while emission intensity observed at 560 nm was considered as output signal (O1). DFT optimized geometries con rmed that chemosensor SB-1 exists in Azo form (Enol form) in its ground state. Molecular docking of the SB-1 and its copper complex, into the binding site of TRK protein tyrosine kinase (PDB: 1t46) was also carried out to explore their biological activity and their potential use as TRK inhibitors.

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Effect of accelerators on thoria based nuclear fuels for rapid and quantitative pyrohydrolytic extraction of F− and Cl− and their simultaneous determination by ion chromatography

Cited by 14 publications

References 11 publications

Seed- and solvent-free synthesis of ZSM-5 with tuneable Si/Al ratios for biomass hydrogenation

Seed- and solvent-free synthesis of ZSM-5 with tuneable Si/Al ratios for biomass hydrogenation

Pyrohydrolysis, a clean separation method for separating non-metals directly from solid matrix

Thiadiazole Functionalized Salicylaldehyde-Schiff Base as a pH-responsive and chemo-reversible “Turn-Off” fluorescent probe for selective cu (II) detection: Logic Gate Behaviour and Molecular Docking Studies

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