Palladium(II) Chloride Complex Ion Recovery from Aqueous Solutions Using Adsorption on Activated Carbon

Wojnicki, Marek; Socha, Robert P.; Pędzich, Zbigniew; Mech, Krzysztof; Tokarski, Tomasz; Fitzner, K.

doi:10.1021/acs.jced.7b00885

Cited by 48 publications

(19 citation statements)

References 32 publications

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“…It was also shown previously [18], that the formation of PdCl 2 on the surface was observed, and this chemical compound is the final product of the reaction.…”

Section: Resultssupporting

confidence: 74%

“…Then, the proposed integral form resulting from the assumed model was fitted to the obtained kinetic curve, and respective parameters related to the process were derived. Taking into account the results obtained earlier [18] it was assumed that the studied process consists of two steps. This assumption is supported by the fact, that calculated Gibbs free energy for assumed single step process is positive.…”

Section: Resultsmentioning

confidence: 99%

“…Palladium(II) chloride complex was obtained according to the methodology described in our previse paper [18].…”

Section: Methodsmentioning

confidence: 99%

“…The process of Pd(II) chloride complex ions adsorption on activated carbon was described in our previous paper [18]. In the case of acidic solutions containing chloride ions, palladium forms chloride complexes.…”

Section: Introductionmentioning

confidence: 99%

“…In our previous work [18], we investigated and described the conditions of Pd(II) ion recovery through adsorption on activated carbon used as the sorbent.…”

Section: Introductionmentioning

confidence: 99%

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Kinetic modeling of the adsorption process of Pd(II) complex ions onto activated carbon

Wojnicki

Fitzner

2018

Reac Kinet Mech Cat

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In this work, the results of kinetic studies of Pd(II) chloride complex ion adsorption process on activated carbon are presented. The experiments were conducted for different temperatures, initial concentrations of Pd(II) complex ions as well as for different amount of activated carbon. These results confirmed that the mechanism of the adsorption process is complex and can be described by two step reaction model. A new form of the adsorption isotherm based on kinetic mechanism is suggested and can describe the observed process. Moreover, it was shown that for specific conditions, the proposed isotherm can be transformed into the Freundlich's isotherm. The activation energies of the subsequent stages of the studied process were determined and are equal to E 1 = -9 ± 9, E 2 = -6 ± 1.4 and E 3 = -85 ± 8.9 J mol -1 , respectively. It is also suggested that the observed positive Gibbs energy change during adsorption can be related only to the first step of this process which does not lead to the final product.

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“…It was also shown previously [18], that the formation of PdCl 2 on the surface was observed, and this chemical compound is the final product of the reaction.…”

Section: Resultssupporting

confidence: 74%

Section: Resultsmentioning

confidence: 99%

“…Palladium(II) chloride complex was obtained according to the methodology described in our previse paper [18].…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In our previous work [18], we investigated and described the conditions of Pd(II) ion recovery through adsorption on activated carbon used as the sorbent.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Kinetic modeling of the adsorption process of Pd(II) complex ions onto activated carbon

Wojnicki

Fitzner

2018

Reac Kinet Mech Cat

Self Cite

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Mechanistic Analysis and Control of Electro‐Fabrication with Soft Matter: Polysaccharide Self‐Assembly with Electrochemically Produced Metal Ions

Jind,

Jiménez‐Moreno,

Chauhan

et al. 2023

Adv Materials Inter

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Electro‐fabrication is an emerging additive manufacturing approach that includes a variety of mechanisms and crosslinking chemistries to induce the self‐assembly‐ of soft matter. Within electro‐fabrication techniques, anodic electro‐fabrication is of great interest, because it can use the electrode as a sacrificial source of metal ions for the controlled formation of chelated hydrogels. However, it remains challenging to understand how the various solution conditions (e.g., buffer capacity, ligands) and imposed voltages must be controlled to achieve the chelation and sol‐gel transition. Herein, a comprehensive thermodynamics‐based framework is built to guide the selection of conditions for the self ‐assembly of polysaccharide hydrogels by crosslinking with transition metal ions generated via corrosion. This methodology is demonstrated through real‐time spectro‐electrochemical monitoring and employed for the electro‐fabrication of chitosan hydrogels chelated with Au3+, Ag+, Cu2+, and Pd2+, and alginate hydrogels chelated with Cu2+. The presented guidelines are intended to extend the capabilities of the controlled fabrication of assemblies crosslinked with metal ions, opening new horizons for unprecedented materials design with precisely tailored structures and functions.

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Highly Efficient and Reusable Polymer Supported Palladium Catalyst for Copper Free Sonogashira Reaction in Water

Sruthi

Nimmi²,

Babu

et al. 2022

ChemistrySelect

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Development of a novel, greener and efficient heterogeneous catalytic system for copper free Sonogashira reaction in water is described. This novel catalyst can be easily prepared by a simple method through synthetic modification of nitrile group in Polyacrylonitrile (PAN) using monoethanolamine (MEA) followed by its complexation with palladium chloride (PdCl2). The resulting polymer Pd complex (mPAN‐Pd) was characterized by means of Fourier Transform Infrared Spectroscopy (FTIR), Energy‐Dispersive X‐ray Spectroscopy (EDAX), Inductively Coupled Mass Spectrometry (ICP‐MS) and X‐ray Photo Electron Spectroscopy (XPS) analyses. mPAN‐Pd was then explored as highly efficient heterogeneous catalyst for Sonogashira coupling reaction under copper and ligand free conditions in water affording the corresponding coupling products up to 97 % isolated yield. Moreover, the catalyst was recovered by simple filtration after the reaction and reused for next 5 cycles with excellent stability and activity. This is the first report on the use of ethanolamine modified PAN Pd (II) complex as an efficient heterogeneous catalyst for a coupling reaction.

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Palladium(II) Chloride Complex Ion Recovery from Aqueous Solutions Using Adsorption on Activated Carbon

Cited by 48 publications

References 32 publications

Kinetic modeling of the adsorption process of Pd(II) complex ions onto activated carbon

Kinetic modeling of the adsorption process of Pd(II) complex ions onto activated carbon

Mechanistic Analysis and Control of Electro‐Fabrication with Soft Matter: Polysaccharide Self‐Assembly with Electrochemically Produced Metal Ions

Highly Efficient and Reusable Polymer Supported Palladium Catalyst for Copper Free Sonogashira Reaction in Water

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