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مقاله Synthesis and characterization of nano SiO4 from rice husk ash by Precipitation method word دارای 5 صفحه می باشد و دارای تنظیمات در microsoft word می باشد و آماده پرینت یا چاپ است

فایل ورد مقاله Synthesis and characterization of nano SiO4 from rice husk ash by Precipitation method word کاملا فرمت بندی و تنظیم شده در استاندارد دانشگاه و مراکز دولتی می باشد.

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توجه : در صورت  مشاهده  بهم ریختگی احتمالی در متون زیر ،دلیل ان کپی کردن این مطالب از داخل فایل ورد می باشد و در فایل اصلی مقاله Synthesis and characterization of nano SiO4 from rice husk ash by Precipitation method word ،به هیچ وجه بهم ریختگی وجود ندارد

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بخشی از متن مقاله Synthesis and characterization of nano SiO4 from rice husk ash by Precipitation method word :

سال انتشار: 1390

محل انتشار: سومین همایش ملی تحقیقات نوین در شیمی و مهندسی شیمی

تعداد صفحات: 5

چکیده:

This work is presented as studies on the preparation of rice husk ash by burning at 777 oC for 3 and 6 h, respectively. Consequently, silica content obtained after heat treatment at 777 oC for 6 h was 981149. of rice husk ash (RHA) which was purified by alkaline extraction method by using 215N sodium hydroxide. Infrared spectral data supported the presence of hydrogen bonded silinol group and the siloxane groups in silica. Subsequently, the RHA was subjected to precipitation method in order to produce nanosilica. The precipitation was done by refluxing silica from RHA in boiling 215N NaOH. X-ray diffractograms and diffraction pattern showed that the obtained products were amorphous nanosilica. The size of the particle is determined from the number averaged particle radius by LPS that show Nanosilica particles which obtained from the rice husk ash were in the agglomerate form which dimension of 17-37 nm.

 

 

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