Molten solvent extraction behavior of palladium with 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone at 60 °C

• Autorzy: Bo Peng , Xiaojun Guo , Xuefen Mao , Jinzhang Gao
• Języki publikacji: EN

Abstrakty

EN

The solvent extraction behavior of precious metal palladium with 1-phenyl-3-methyl-4-benzoyl-5-pyrazone (PMBP) into molten paraffin wax has been studied in the temperature range from 55 to 75 °C. The complex consisting of PMBP and palladium was extracted into molten wax phase in the pH range from 1.0 to 3.5 at 60 °C. The extraction efficiency was up to 97% at the experimental pH. The stoichiometry of the extracted species of palladium was determined on the basis of slope analysis method. The effects of time to achieve equilibrium, temperature, and extractant concentration on the extraction were discussed. The thermodynamic data indicate that the extraction is an endothermic reaction and the increase of temperature promotes the extraction of palladium into molten paraffin wax and the extraction of palladium with PMBP is entropy controlled at high temperatures. [...]

Słowa kluczowe

EN

Molten solvent; extraction; paraffin wax; palladium; 1-phenyl-3-methyl-4-benzoyl-5-pyrazone; thermodynamic data

• Czasopismo: Open Chemistry
• Rocznik: 2007
• Tom: 5
• Numer: 3
• Strony: 912-921

Daty

wydano

2007-09-01

online

2007-04-12

Twórcy

autor

Bo Peng

• College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China

autor

Xiaojun Guo

• College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China

autor

Xuefen Mao

• College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China

autor

Jinzhang Gao

• College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China,

Bibliografia

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Identyfikatory

DOI

10.2478/s11532-007-0008-x