Sol–gel combustion synthesis and antiferromagnetic properties of orthorhombic perovskite-type MFeO3:R3+ (M=La, Gd; R=Eu, Er, Ho) nanocrystalline powders

2020 ◽  
Vol 282 ◽  
pp. 121087
Author(s):  
Peixi Hao ◽  
Linwen Jiang ◽  
Hanlei Zhao ◽  
Jiangtao Li ◽  
Shiwen Qiu ◽  
...  
Keyword(s):  
Combustion Synthesis ◽  
Sol Gel ◽  
Nanocrystalline Powders ◽  
Gel Combustion ◽  
Orthorhombic Perovskite ◽  
Perovskite Type

Sol-gel Combustion Synthesis of Merwinite and its Biomedical Applications

2021 ◽  
pp. 130108
Author(s):  
Subhashree Praharaj ◽  
Senthil Kumar Venkatraman ◽  
R. Vasantharaman ◽  
Sasikumar Swamiappan
Keyword(s):  
Combustion Synthesis ◽  
Biomedical Applications ◽  
Sol Gel ◽  
Gel Combustion

La and Co substituted M-type barium ferrites processed by sol–gel combustion synthesis

2013 ◽  
Vol 48 (11) ◽  
pp. 4449-4453 ◽  
Author(s):  
Wangchang Li ◽  
Xiaojing Qiao ◽  
Mingyu Li ◽  
Ting Liu ◽  
H.X. Peng
Keyword(s):  
Combustion Synthesis ◽  
Sol Gel ◽  
Gel Combustion ◽  
Barium Ferrites

Optimized Preparation of Fe2O3/Al2O3 Composite with Sol-Gel Combustion Synthesis Method Based on Orthogonal Experimental Design

2011 ◽  
Vol 341-342 ◽  
pp. 215-220
Author(s):  
Bao Wen Wang ◽  
Chuan Chang Gao ◽  
Hai Bo Zhao ◽  
Chu Guang Zheng
Keyword(s):  
Experimental Design ◽  
Combustion Synthesis ◽  
Ignition Temperature ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Synthesis Method ◽  
Influential Factor ◽  
Molar Ratio ◽  
Orthogonal Experimental Design ◽  
Gel Combustion

Fe2O3/Al2O3 composite at the mass ratio of 3:2 was prepared by sol-gel combustion synthesis using urea as fuel. The optimized preparation parameters were determined by the robust orthogonal experimental design (OED) method. Standard L9(34) orthogonal array was adopted, and the four factors were determined as the molar ratio of oxidizer nitrates to fuel urea Ф, relative amount of the deionized water added Rw, ignition temperature and sintering temperature. Range analysis of the relative importance of those four factors on the mean weight loss rate for the reduction of synthesized Fe2O3/Al2O3 with 50 vol% H2 indicated that the most influential factor was Ф, sintering temperature, Rw and ignition temperature in the descending order. And the optimized preparation parameters for Fe2O3/Al2O3 composite were Ф=1, Rw=7.5, ignition and sintering temperatures stabilized as 600°C and 950°C,respectively. Finally, the reaction characteristics of Fe2O3/Al2O3 prepared by SGCS and the other two reference methods (including sol-gel method and mechanical mixing method) were compared and the results verified that the optimized SGCS was the best option to synthesize Fe2O3/Al2O3 composite with good reaction performance.

Sol-Gel Combustion Synthesis of Silica/ Carbon Black Pigment

2012 ◽  
Vol 554-556 ◽  
pp. 636-639
Author(s):  
Qi Fu Bao ◽  
Wei Xia Dong ◽  
Qi Bing Chang ◽  
Jian Er Zhou
Keyword(s):  
High Temperature ◽  
Carbon Black ◽  
Combustion Synthesis ◽  
Raw Materials ◽  
Sol Gel ◽  
Black Pigment ◽  
Prepared Sample ◽  
Gel Combustion ◽  
Combustion Technique

A green silicon-containing carbon black pigment was synthesized via a sol-geo combustion technique using TEOS and black ink as raw materials. The obtained black pigment was characterized by XRD, TEM and UV-vis absorption spectrophotometer. The results show that the silicon coated with carbon black pigment can be formed at pH ≥ 2 and the black pigment does not change its color after calcinations at 1300 °C in air implying the carbon black is coated completely with SiO2. When pH is 4, the properties of as-prepared sample are similar with the conventional high-temperature pigment. XRD and SEM further confirm that silicon coats with carbon black fully. The silica/ carbon black pigment may represent an opportunity for the applications in the decoration of the high-temperature ceramic.

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