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Kinetics Study on the Thermal Decomposition of Lanthanum Oxalate Catalysed by Zn-Cu Nano Ferrites

Author Affiliations

  • 1 P.G. Department of Chemistry, Orissa University of Agriculture and Technology, Bhubaneswar 751003(Orissa), INDIA

Res. J. Material Sci., Volume 3, Issue (2), Pages 1-8, June,16 (2015)


Nanostructured zinc-copper mixed ferrite was synthesized using sol-gel method. XRD patterns of different compositions of zinc copper ferrite, Zn(1 CuFe (x = 0.0, 0.25, 0.50, 0.75), revealed single phase inverse spinel ferrite in all the samples. With increasing copper concentration, the crystallite size increases from 30 nm to 50 nm. The surface morphology of all the samples studied by the Scanning Electron Microscopy showing porous structure of particles throughout the sample. The prepared samples were also analysed by XRD, FTIR, TEM. Catalytic activity of the prepared samples were studied on lanthanum oxalate decomposition by Thermogravimetric methods (TGA). The rate constant k has got the highest value with x=0.75 and 5 mol% concentration and highest value is attributed to high copper concentration and also due to ion pairs as a result of mutual charge interaction i.e. besides the one component sites Cu2+ Cu, Fe3+ Fe2+ , there will be also the mixed sites Cu2+ Fe as well as Cu Fe2+. In other words, the increasing activity of mixed oxides is attributed to enhanced concentration of active sites by creating new ion pairs. With increasing Zn content increases particle size thereby providing comparatively less surface area for the catalytic activities due to large ionic radii of Zinc. Catalytic activity of ferrite powders changes remarkably due to the changes of the valence state of the components of the ferrites, responsible for catalytic activities and that oxidises the carbon monoxide released from Lanthanum oxalate


  1. Sugimoto M, The past, present and future of ferrites, Journal of the American Ceramic Society, 82, 269-280. (1999)
  2. Suzuki Y., Epitaxial Spinel ferrite thin Films, Annual Review of Material Research, 31, 265-289, (2001)
  3. H. Nayak and Ashish K. Jena, Catalyst Effect of Transition Metal Nano Oxides on the Decomposition of Lanthanum Oxalate Hydrate: A Thermo gravimetric Study, International Journal of Science and Research (IJSR) , 3(11), 381-388 (2014)
  4. Rakesh Kumar Singh, A. Yadav, Kamal Prasad and A. Narayan, Dependence of magnetic and structural properties of Ni0.5 M0.5 Fe (M=Co, Cu) nanoparticles synthesized by citrate precursor method on annealing temperature, International Journal of Engineering, Science and Technology, 2(8), 73-79 (2010)
  5. Joelda Dantasa, Jakeline Raiane D. Santosa, Rodrigo Bruno L. Cunhaa, Ruth Herta G. A. Kiminamib and Ana Cristina F. M. Costaa, Use of Ni-Zn ferrites doped with Cu as catalyst in the transesterification of soybean oil to methyl esters, Materials Research, 16(3), 625-627 (2013)
  6. Prabhulkar S.G. and Patil R.M Synthesis, Characterization and Catalytic Properties of Nickel Substituted Copper Ferrospinel nanoparticles, Research Journal of Material Sciences, 1(4), 18-21, (2013)
  7. H. Nayak, Kinetic and Thermodynamic Studies on the Non-Isothermal Decomposition of Lanthanum Oxalate Hydrate, Catalysed By Transition Metal Nano Oxides,IOSR Journal of Applied Chemistry (IOSR-JAC), 7(11),15-23 (2014)
  8. Ch. Vinuthna, D. Ravinder, R. Madhusudan Raju D. Ravinder, Characterization of Co1-XZnFe Nano Spinal Ferrites Prepared By Citrate Precursor Method, Int. Journal of Engineering Research and Applications, 3(6),654-660 (2013)
  9. Gopathi Ravi Kumar, Katrapally Vijaya Kumar, Yarram Chetty Venudhar, Synthesis, Structural and Magnetic Properties of Copper Substituted Nickel Ferrites by Sol-Gel Method, Materials Sciences and Applications, 3, 87-91 (2012)
  10. C.O. Ramankutty and S. Sugunan, Surface properties and catalytic activity of ferrospinels of nickel, cobalt and copper, prepared by soft chemical methods, Applied Catalysis A: General, 218, 39-51 (2001)
  11. Anjaneyulu T., Narayana Murthy P., Narendra K and Vijaya Kumar, Structural and Magnetic Properties of Cu1-ZnFeNano-powders synthesised by Oxalate based precursors method International Journal of Basic and Applied Chemical Sciences, 3(1), 50-59 (2013)
  12. Hussain Abd-Elkariem Dawoud, Thermoelectric Power of Cu-Zn Ferrites, Materials Sciences and Applications, 2, 1572-1577 (2011)
  13. Nayakv H., Pati S.K. and Bhatta D., Decomposition of irradiated La(CCuO mixture: a non-isothermal study. Radiation effects and defects in solids, 159, 93-106 (2004)
  14. Anuj Jain, Ravi Kant Baranwal, Ajaya Bharti, Z. Vakil, and C.S. Prajapati.,Study of Zn-Cu Ferrite Nanoparticles for LPG Sensing, The ScientificWorld Journal, Volume 2013, Article ID 790359
  15. Nayak H. and Bhatta D., Catalytic effects of magnesium chromite spinel on the decomposition of lanthanum oxalate,Thermochim Acta, 389(1-2), 109-119 (2002)
  16. Koleva K.V., Velinov N.I., Tsoncheva T.S., Mitov I.G. and Kunev B.N., Preparation, structure and catalytic properties of ZnFe4, Bulgarian Chemical Communications, 45(4), 434439 (2013)
  17. Hussain Abd-Elkariem Dawoud, Thermoelectric Power of Cu-Zn Ferrites, Materials Sciences and Applications, 2,1572-1577 (2011)