Carbamoylmethylphosphine oxide functionalised porous crosslinked polymers towards sequential separation of uranium (VI) and thorium (IV)

Activated carbon (AC) modified with triphenyl phosphine oxide (TPPO) was tested for thorium(IV) adsorption. Different factors affecting the adsorption process such as pH, contact time, modified AC dose, initial thorium concentration, triphenyl phosphine oxide (TPPO) concentration and temperature were investigated to optimize Th(IV) adsorption operating conditions. Kinetic and equilibrium studies of the adsorption process have been studied. The obtained most favorable conditions for Th(IV) adsorption were: pH 3.6, 40 min contact time, 0.5 g modified AC dose, 0.02 M TPPO in toluene and 400 mg/L of thorium concentration at room temperature. The maximum sorption capacity according to Langmuir isotherm reached 71.94 mg/g for modified AC. Adsorption kinetics obeys pseudo-second order kinetic model. Thorium(IV) was efficiently desorbed from the loaded composite using 0.5 M H 2 SO 4 solution. The optimized factors have been carried out to recover thorium(IV) from Abu Rusheid leach liquor, south Eastern Desert, Egypt.

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“…15). A comparative study [48][49][50][51][52][53][54][55] of thorium uptake capacities (mg/g) of different adsorbents is shown in (Table 6).…”

Section: Case Studymentioning

confidence: 99%

Thorium ions recovery using activated carbon modified with triphenyl phosphine oxide: kinetic and equilibrium studies

Yousef

Bakry

2019

SN Appl. Sci.

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“…The high coordinating ability of these compounds is due to the presence of polar phosphoryl and amide groups. CMPO are used in industrial processes for reprocessing spent nuclear fuel [ 18 , 19 ] and for the processing of radioactive waste and the separation of transplutonium elements [ 20 , 21 ], as well as for the preparation of composite materials for column chromatography [ 22 , 23 , 24 ]. Carbamoylmethylphosphine oxides modified with a dialkylamidomethyl coordination group in the methylene bridge are potential neuroprotective agents [ 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Conformational Analysis of N-Alkyl-N-[2-(diphenylphosphoryl)ethyl]amides of Diphenylphosphorylacetic Acid: Dipole Moments, IR Spectroscopy, DFT Study

et al. 2021

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Experimental and theoretical conformational analysis of N-methyl-N-[2-(diphenylphosphoryl)ethyl]diphenylphosphorylacetamide, N-butyl-N-[2-(diphenylphosphoryl)ethyl]diphenylphosphorylacetamide, and N-octyl-N-[2-(diphenylphosphoryl)ethyl]diphenylphosphorylacetamide was carried out by the methods of dipole moments, IR spectroscopy, and Density Functional Theory (DFT) B3PW91/6-311++G(df,p) calculations. In solution, these N,N-dialkyl substituted bisphosphorylated acetamides exist as a conformational equilibrium of several forms divided into two groups—with Z- or E-configuration of the carbonyl group and alkyl substituent, and syn or anti arrangement of the phosphoryl-containing fragments relative to the amide plane. The substituents at the phosphorus atoms have eclipsed cis- or staggered gauche-orientation relative to the P=O groups, and cis orientation of the substituents is due to the presence of intramolecular H-contacts P=O...H−Cphenyl or p,π conjugation between the phosphoryl group and the phenyl ring. Preferred conformers of acetamides molecules are additionally stabilized by various intramolecular hydrogen contacts with the participation of oxygen atoms of the P=O or C=O groups and hydrogen atoms of the methylene and ethylene bridges, alkyl substituents, and phenyl rings. However, steric factors, such as a flat amide fragment, the bulky phenyl groups, and the configuration of alkyl bridges, make a significant contribution to the realization of preferred conformers.

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“…Porous polymer monolith materials have found a wide range of application fields . They are used in chromatography and also can serve as effective sorbents of heavy metals , a matrix supports for catalysts , ion sensors . Usually, each of these cases requires different surface properties.…”

Section: Introductionmentioning

confidence: 99%

Facile Visible‐Light‐Induced Preparation and Hydrophobization of Porous polyEGDMA and polyTEGDMA Thick Monoliths

Len’shina

Arsenyev

Батенькин

et al. 2020

Polymer Engineering & Sci

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The simple low‐cost method for synthesis and post‐functionalization of thick macroporous polymer monoliths was proposed and realized by example of obtaining and hydrophobization of monoliths based on mono‐ and triethylene glycol dimethacrylates. Described procedures comprise using of ubiquitous visible‐light projection system and single photoinitiator (9,10‐phenanthrenequinone) in both cases. This approach eliminates the need in “material” photomasks and permit to operate with computer generated virtual photomask to form the pattern of functionalization. Macroporous polymer monoliths of 2 and 4 mm in thickness with a system of interconnected pores were synthesized and hydrophobized. The thick layers of functionalized porous polymer with wetting pattern through the entire sample thickness with the water contact angle for hydrophobic parts reaching120–125° were obtained. POLYM. ENG. SCI., 60:682–689, 2020. © 2020 Society of Plastics Engineers

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Carbamoylmethylphosphine oxide functionalised porous crosslinked polymers towards sequential separation of uranium (VI) and thorium (IV)

Cited by 19 publications

References 49 publications

Thorium ions recovery using activated carbon modified with triphenyl phosphine oxide: kinetic and equilibrium studies

Thorium ions recovery using activated carbon modified with triphenyl phosphine oxide: kinetic and equilibrium studies

Conformational Analysis of N-Alkyl-N-[2-(diphenylphosphoryl)ethyl]amides of Diphenylphosphorylacetic Acid: Dipole Moments, IR Spectroscopy, DFT Study

Facile Visible‐Light‐Induced Preparation and Hydrophobization of Porous polyEGDMA and polyTEGDMA Thick Monoliths

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