Extraction Chromatography of Pd<sup>2+</sup>-Thiourea Complex

Šulcek, Z.; Doležal, J.; Yusaf, M.

doi:10.1080/00032717108059682

Cited by 10 publications

(6 citation statements)

References 3 publications

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“…The elution band observed was narrow with almost no elution tailing in the elution curve, reflecting effective desorption and rapid elution kinetics of Pd(II) from the loaded BDBTP/SiO 2 ‐P. Namely, Pd(II) could be effectively complexed with CS functional group of thiourea molecule 33, 34. According to the Lewis theory of acid–base reactions, S atom is a soft–Lewis base, that is, a soft–electron‐pair donor, which is similar to N atom.…”

Section: Resultsmentioning

confidence: 98%

A Selective Ru‐Catalyzed Semireduction of Alkynes to Z Olefins under Transfer‐Hydrogenation Conditions

Belger

Neisius

Plietker

2010

Chemistry A European J

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Section: Resultsmentioning

confidence: 98%

A Selective Ru‐Catalyzed Semireduction of Alkynes to Z Olefins under Transfer‐Hydrogenation Conditions

Belger

Neisius

Plietker

2010

Chemistry A European J

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“…Considering the uptake results mentioned above and some advantages of the SiO 2 support, for instance, high resistance ability against temperature, HNO 3 concentration, and γ-irradiation, and so forth, − application of the triazine-containing silica adsorbent BisDiOTP@SiO 2 –P in the removal of Pd(II) is promising.…”

Section: Resultsmentioning

confidence: 99%

Minor Actinides Partitioning: Uptake of Palladium with Triazine-Containing Adsorbent under the Framework of SPMP Process

2016

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To remove Pd(II), a new triazine-containing silica adsorbent, BisDiOTP@SiO2–P, was prepared. The synthesis was achieved by impregnation in situ and immobilization of a multinitrogen ligand, BisDiOTP, into the pores of the SiO2–P support. The uptake of typical metals Sr(II), Pd(II), Li(I), Na(I), Cs(I), K(I), Rb(I), and Ba(II) onto BisDiOTP@SiO2–P was investigated. The effects of contact time and HNO3 concentration from 0.4 to 5.0 M were studied. The strong uptake ability and selectivity of BisDiOTP@SiO2–P for Pd(II) was indicated by six cycles of the batch uptake and desorption. The removal efficiency was always more than 99.2% for Pd(II) and less than 0.15% for others. In light of the results of batch experiments, the removal of Pd(II) from a simulated 1.0 M HNO3 was performed using BisDiOTP@SiO2–P as a stationary phase by extraction chromatography. Pd(II) adsorbed by BisDiOTP@SiO2–P was effectively desorbed with 0.2 M thiourea. An efficient removal of Pd(II) by BisDiOTP@SiO2–P was achieved. Some valuable data in chemical separation engineering of Pd(II) under the framework of SPMP process were obtained. It is promising to simultaneous removal of Pd(II) and MAs(III) from highly active liquid waste by the SPMP process developed.

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“…The elution band observed was narrow with almost no elution tailing in the elution curve, reflecting effective desorption and rapid elution kinetics of Pd(II) from the loaded BDBTP/SiO 2 -P. Namely, Pd(II) could be effectively complexed with C¼ ¼S functional group of thiourea molecule. 33,34 According to the Lewis theory of acid-base reactions, S atom is a soft-Lewis base, that is, a soft-electron-pair donor, which is similar to N atom. Because S is a softer base than that of N, thiourea shows stronger complexation with Pd(II) ion, a softLewis acid, than that of BDBTP.…”

Section: Chromatographic Partitioning Of Pd(ii)mentioning

confidence: 99%

Synthesis of a macroporous silica‐based derivative of pyridine material and its application in separation of palladium

2010

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A novel macroporous silica-based 2,6-bis(5,6-dibutyl-1,2,4-triazine-3-yl)pyridine (BDBTP) material, BDBTP/SiO 2 -P, was prepared through impregnation and immobilization of BDBTP and octanol into the pores of the SiO 2 -P particles. The adsorption of 10 typical fission and nonfission elements contained in highly active liquid waste (HLW) onto BDBTP/SiO 2 -P was investigated by examining the effect of contact time and the HNO 3 concentration in the range of 0.1-5.0 M. Pd(II), a weak Lewis acid and an electron-pair acceptor, was strongly complexed with nitrogen, a weak Lewis base and an electron-pair donor. BDBTP/SiO 2 -P showed excellent adsorption ability and high selectivity for Pd(II) over all the tested metals. The separation of Pd(II) from a simulated HLW was performed by BDBTP/SiO 2 -P packed column. Pd(II) was effectively eluted with 0.2 M thiourea and separated from the others. It demonstrated that in HNO 3 , application of the macroporous silica-based BDBTP/SiO 2 -P material in partitioning and recovery of Pd(II) from HLW is promising. V V C 2010 American Institute of Chemical Engineers AIChE J, 56: 3074-3083, 2010

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Extraction Chromatography of Pd²⁺-Thiourea Complex

Cited by 10 publications

References 3 publications

A Selective Ru‐Catalyzed Semireduction of Alkynes to Z Olefins under Transfer‐Hydrogenation Conditions

A Selective Ru‐Catalyzed Semireduction of Alkynes to Z Olefins under Transfer‐Hydrogenation Conditions

Minor Actinides Partitioning: Uptake of Palladium with Triazine-Containing Adsorbent under the Framework of SPMP Process

Synthesis of a macroporous silica‐based derivative of pyridine material and its application in separation of palladium

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Extraction Chromatography of Pd2+-Thiourea Complex

Cited by 10 publications

References 3 publications

A Selective Ru‐Catalyzed Semireduction of Alkynes to Z Olefins under Transfer‐Hydrogenation Conditions

A Selective Ru‐Catalyzed Semireduction of Alkynes to Z Olefins under Transfer‐Hydrogenation Conditions

Minor Actinides Partitioning: Uptake of Palladium with Triazine-Containing Adsorbent under the Framework of SPMP Process

Synthesis of a macroporous silica‐based derivative of pyridine material and its application in separation of palladium

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Extraction Chromatography of Pd²⁺-Thiourea Complex