Single step preparation of CeO2/CeAlO3/γ-Al2O3 by solution combustion method: Phase evolution, thermal stability and surface modification

2007 ◽  
Vol 139 (1) ◽  
pp. 55-61 ◽  
Author(s):  
A.S. Prakash ◽  
C. Shivakumara ◽  
M.S. Hegde
Keyword(s):  
Thermal Stability ◽  
Surface Modification ◽  
Phase Evolution ◽  
Combustion Method ◽  
Single Step ◽  
Solution Combustion ◽  
Solution Combustion Method

Selective liquid phase benzyl alcohol oxidation over Cu-loaded LaFeO3 perovskite

RSC Advances ◽  
2016 ◽  
Vol 6 (6) ◽  
pp. 4469-4477 ◽  
Author(s):  
Rajib Mistri ◽  
Dipak Das ◽  
Jordi Llorca ◽  
Montserrat Dominguez ◽  
Tapas Kumar Mandal ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Benzyl Alcohol ◽  
Alcohol Oxidation ◽  
Combustion Method ◽  
Single Step ◽  
Solution Combustion ◽  
Solution Combustion Method ◽  
Benzyl Alcohol Oxidation

Copper loaded LaMO3 (M = Mn, Fe and Co) perovskites have been synthesized by a single-step solution combustion method.

Effective parameters for synthesis of chromium doped YAlO3 red pigment

2015 ◽  
Vol 44 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Sara Ahmadi ◽  
Alireza Aghaei ◽  
Bijan Eftekhari Yekta
Keyword(s):  
Thermal Stability ◽  
Citric Acid ◽  
Perovskite Structure ◽  
Phase Evolution ◽  
Combustion Method ◽  
Red Pigment ◽  
Effective Parameters ◽  
Solution Combustion ◽  
Solid State Method ◽  
Content Type

Purpose – The purpose of this article is to evaluate the role of mineralisers on the formation of perovskite structure, optimise the amounts of chromium content, soaking time and finally the ratio of fuel (citric acid) to oxidiser (metal nitrate) and investigation of the physical properties of resulted pigments. Design/methodology/approach – A red pigment based on perovskite structure (YAl1-yCryO3, y = (0.01-0.1) was synthesised by solution combustion method with various mineralisers, like NaF, MgF2 and Li2CO3. Thermal decomposition of the resulting nitrate-citrate gels and the phase evolution of calcined powders were investigated and the microstructure and colorimetry of the emerging products were characterised. Findings – The most effective mineraliser system for the formation of YAlO3 perovskite was NaF:MgF2:Li2CO3 (3:2:1 by weight). Furthermore, desirable pigments were obtained by firing the samples at 1,400°C for 4 hours. The highest redness parameter (a*) and reflectance value were obtained when y was 0.03 and 0.01, respectively. Increasing the fuel: oxidiser ratio led to an increase in the a* parameter. Use of the optimum prepared red pigment in the low and high firing temperature glazes gave a high chemical and thermal stability. Research limitations/implication – Only citric acid was used as fuel. Other fuels and different ratios of fuel to oxidiser could also be studied. Practical implications – The method developed provided a new approach for preparation to nontoxic, high-temperature, ceramic red pigment compared to the solid-state method. Originality/value – The methods for synthesis of pigment based on perovskite structure with different chromium contents and for evaluation of thermal stability of pigment in glaze were novel.

Photocatalytic decolorization of methylene blue using immobilized ZnO nanoparticles prepared by solution combustion method

2012 ◽  
Vol 44 (1-3) ◽  
pp. 174-179 ◽  
Author(s):  
Abbas Rezaee ◽  
Hossein Masoumbeigi ◽  
Reza Darvishi Cheshmeh Soltani ◽  
Ali R. Khataee ◽  
Seyedjamalodin Hashemiyan
Keyword(s):  
Methylene Blue ◽  
Zno Nanoparticles ◽  
Combustion Method ◽  
Solution Combustion ◽  
Solution Combustion Method ◽  
Photocatalytic Decolorization
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