SYNTHESIS OF MESOPOROUS-CATALYST-SUPPORT-SILICA PARTICLES BY SOL-GEL PROCESS
Publish place: 06th International Congress on Chemical Engineering
Publish Year: 1388
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICHEC06_510
تاریخ نمایه سازی: 1 مهر 1388
Abstract:
Sol gel method is a good way for synthesis of inorganic networks with different shapes like spheres, rigid films and etc. In this work we used this method for synthesizing silicaparticles .As we wanted to get particles with spherical shape ,we used emulsion media. We used TEOS as a precursor for making silica networks. We saw that Water/TEOS ratio, concentration of NH4OH, PH and … are some parameters that affect on final particle size. We saw that particle size increased by increasing of TEOS concentration. And also we saw that our emulsion is so sensitive to the concentration of ammonia and alittle change in its contant may result in formation of a large network instead of particles in our emulsion. SEM, FTIR and optical microscope tests were performed and the results are reported.
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Authors
Z Sadredini
Dept.Polymer Engineering,Amirkabir University Of Tehran(Polytechnic),Tehran,Iranz_
S Pourmahdian
Dept.Polymer Engineering,Amirkabir University Of Tehran(Polytechnic),Tehran,Iranz_
M Mohseni
Dept.Polymer Engineering,Amirkabir University Of Tehran(Polytechnic),Tehran,Iranz_
S Qavi
Dept.Polymer Engineering,Amirkabir University Of Tehran(Polytechnic),Tehran,Iranz_