An unusal effect of charcoal on the purification of alkylimidazolium iodide room temperature ionic liquids

Indian Journal of Chemistry - Section A Inorganic, Physical, Theoretical and Analytical Chemistry

Volumn 49, Issue 5-6, 2010, Pages 757-761

  Srivastava, Nitin ^a   Shukla, Madhulata ^a   Saha, Satyen ^a  

^a BANARAS HINDU UNIVERSITY   (India)

Author keywords

Activated charcoal; Iodine; Ionic liquids; Purification; Room temperature ionic liquids

Indexed keywords

EID: 77956076583     PISSN: 03764710     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (20)

1. Seddon K R, Stark A & Torres M J, Pure Appl Chem, 72 (2000) 2275.
2. Earle M J, Esperanca J M S S, Gilea M A, Canongia Lopes L J N, Rebelo L P N, Magee J W, Seddon K R & Widegren J A, Nature, 439 (2006) 831.
3. Earle M J, Gordon C M, Plechkova N V, Seddon K R & Welton T, Anal Chem, 79 (2007) 758.
4. Burell A K, Del Sesto R E, Baker S N, McCleskey T M & Baker G A, Green Chem, 9 (2007) 449.
5. Paul A, Mandal P K & Samanta A, Chem Phys Lett, 402 (2005) 375.
6. Saha S & Hamaguchi H, J Phys Chem B, 110 (2006) 2777.
7. Clare B R, Bayley P M, Best A S, Forsyth M & MacFarlane D R, Chem Commun, (2008) 2689.
8. Electrochemical Aspects of Ionic Liquids, edited by H Ohno, (Wiley, New York) 2005.
9. Bonhote P, Dias A P, Papageorgiou N, Kalyanasundaram K & Gratzel M, Inorg Chem, 35 (1996) 1168.
10. Jovanovski V, Orel B, Jerman I, Hocevar S B & Ogorevc B, Electrochem Commun, 9 (2007) 2062.
11. Wang H, Liu X, Wang Z, Li H, Li D, Meng Q & Chen L, J Phys Chem B, 110 (2006) 5970.
12. Turner E A, Pye C C & Singer R D, J Phys Chem A, 107 (2003) 2277.
13. 2-H bond) was found to be responsible for the pale yellow colour.
14. - respectively (vide Supplementary Data).
15. 2, two moles of water molecules are required. It may appear that water molecules intruded in the ionic liquid system are responsible. We have specially dried the solvents and carried out the reaction and workup in dry conditions to rule out the possibility of interference of water. The result that we obtained using dry condition is same, i.e., darkening of bmiml on passing through the charcoal. Moreover, we have not observed any change in IR spectra of charcoal treated in comparison to untreated bmiml.
16. Gardner J M, Abrahamsson M, Farnum B H & Meyer G J, J Am Chem Soc, 131 (2009) 16206.
17. Huddleston J G, Visser A E, Reichert W M, Willauer H D, Broker G A & Rogers R D, Green Chem, 3 (2001) 156.
18. Jacquemin J, Husson P, Padua A A H & Majer V, Green Chem, 8 (2006) 172.
19. Iwata K, Okajima H, Saha S & Hamaguchi H, Acc Chem Res, 40 (2007) 1114.
20. 2, it is obvious that some other species is reduced in the process and balances the net charge of the system. However, as of now, we have not been able to identify this species. Work in this direction is currently underway.