Hydrodehalogenation of 2,4-dibromophenol by electrochemical reduction

Cheng, H.; Scott, K.; Christensen, P.A.
October 2003
Journal of Applied Electrochemistry;Oct2003, Vol. 33 Issue 10, p893
Academic Journal
The electrochemical hydrodehalogenation (HDH) of 2,4-dibromophenol (DBP) has been carried out by electrochemical reduction in H-cells and solid polymer electrolyte (SPE) cells using catalysed cathodes. The electrochemical process gave high conversions of up to 95%, high selectivities of up to 98%, high current efficiencies of up to 98.5% and energy consumption as low as 2.2 kW h (kg DBP)-1. The type of the catalyst plays a decisive role in the efficiency of the HDH of DBP, with palladium being an attractive material. The effect of current density, DBP concentration, supporting electrolyte and temperature, on the HDH is reported.


Related Articles

  • ELECTROREDUCTION OF ALIPHATIC ALDEHYDES ON ALUMINUM CATHODE. Ledovskykh, Volodymyr; Davydenko, Oleksandr // Proceedings of National Aviation University;2015, Vol. 63 Issue 2, p106 

    The article represents the results of the research on the reduction of aliphatic aldehydes on aluminum in aqueous-alcohol solutions. They show that relatively high overpotential of hydrogen on aluminum cathode promotes effective processes of conversion of carbonyl compounds into the...

  • Electrochemical reduction of indigo in fixed and fluidized beds of graphite granules. Roessler, A.; Crettenand, D.; Dossenbach, O.; Rys, P. // Journal of Applied Electrochemistry;Oct2003, Vol. 33 Issue 10, p901 

    Reducing agents required in the dyeing process for vat and sulfur dyes cannot be recycled and lead to problematic waste products. The electrochemical reduction of indigo on a fixed bed cathode consisting of graphite granules has been investigated by spectrophotometric experiments in laboratory...

  • Electrocatalytic Activity of Nanoporous Perovskite La1-xCaxCoO3 Towards Hydrogen Peroxide Reduction in Alkaline Medium. Shuxin Zhuang; Suqin Liu; Chenghuan Huang; Feiyue Tu; Jinbao Zhang; Yanhua Li // International Journal of Electrochemical Science;Jan2012, Vol. 7 Issue 1, p338 

    Perovskite-type series of La1-xCaxCoO3 compounds were synthesized by a modified amorphous citrate precursor method. Their catalytic activities for hydrogen peroxide electroreduction in 3.0 mol dm-3 KOH at 25 ºC were evaluated by cyclic voltammetry and galvanostatic measurement. The influence...

  • Electrolytic partitioning of uranium and plutonium based on a new type of electrolytic mixer-settler. Yuan, Z.; Yan, T.; Zheng, W.; Zuo, C.; Li, H.; Bian, X.; Zhang, B.; Li, C.; Cao, Z.; Xian, L.; Di, Y.; Liu, F. // Radiochimica Acta;Sep2013, Vol. 101 Issue 9, p547 

    The design of a new type of electroreduction mixer-settler for the partitioning of uranium and plutonium during the Purex process, which is featured with E-shaped cathodes and U-shaped anodes in settling chamber, is described and the operational results achieved using this equipment are...

  • Nonlinear time-series analysis of current signal in cathodic contact glow discharge electrolysis. Allagui, Anis; Rojas, Andrea Espinel; Bonny, Talal; Elwakil, Ahmed S.; Abdelkareem, Mohammad Ali // Journal of Applied Physics;5/28/2016, Vol. 119 Issue 20, p203303-1 

    In the standard two-electrode configuration employed in electrolytic process, when the control dc voltage is brought to a critical value, the system undergoes a transition from conventional electrolysis to contact glow discharge electrolysis (CGDE), which has also been referred to as...

  • Q&A: Molecular origami with fluorine chemistry. HUNTER, LUKE // Chemistry in Australia;Oct2011, Vol. 78 Issue 9, p23 

    The article provides an answer to a question on what makes fluorine a useful element.

  • Electrochemical reduction of nitrate ion on various cathodes - reaction kinetics on bronze cathode. Polatides, C.; Kyriacou, G. // Journal of Applied Electrochemistry;May2005, Vol. 35 Issue 5, p421 

    The electrochemical reduction of NOin 0.1 M K2SO4 and 0.05MKNO3 solution was studied on various electrodes in two different cell configurations, a divided and an undivided one. The products in all cases were NO, NH3, N2 and small amounts of NO2 and NO. The more efficient cathodes as regards the...

  • Influence of polymer nature on electrochemical reduction of oxygen. Shapoval, G. S.; Kruglyak, O. S. // Polymer Journal (18181724);2013, Vol. 35 Issue 1, p69 

    Electrochemical reduction of oxygen on the copper electrode with adsorbed polymers is investigated. The polymers serve as models of hydrophilic sides of bio-membranes and namely are: polyacrylamide (PAA), albumin and poly aniline (PANI). It is determined that adsorption of PANI and PAA decreases...

  • Electrochemical reduction of dilute chromate solutions on carbon felt electrodes. Frenzel, Ines; Holdik, Hans; Barmashenko, Vladimir; Stamatialis, Dimitrios; Wessling, Matthias // Journal of Applied Electrochemistry;Mar2006, Vol. 36 Issue 3, p323 

    Carbon felt is a potential material for electrochemical reduction of chromates. Very dilute solutions may be efficiently treated due to its large specific surface area and high porosity. In this work, the up-scaling of this technology is investigated using a new type of separated cell and...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics