Study of the effects of acidic after treatment on the gamma alumina powder properties

سال انتشار: 1396
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 275

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شناسه ملی سند علمی:

ISPTC20_286

تاریخ نمایه سازی: 2 تیر 1397

چکیده مقاله:

Increasing the pore volume and pore diameter of gamma alumina powder is the purpose of this research. In order to increase the pore volume and pore diameter of gamma alumina powder, the effects of acidic after treatment on physical chemistry of gamma alumina are studied. In this regard, the boehmite powder from the Azarshahr Nephlinsinite ore is calcinated at 650 ̊C for 6 hours and gamma alumina powder is obtained. In order to obtain the gamma alumina powder with desired pore volume and pore diameter, after treatments in hydrochloric acid and nitric acid and after treatment with different steps (first, second and third steps) on the boehmite powder are performed. The pore volume, pore diameter and surface area of the final prepared gamma alumina were studied by the BET techniques and the results shows that after treatment in hydrochloric acid and nitric acid with third steps are effective to increase the pore volume and pore diameter of the gamma alumina powder.

نویسندگان

Zahra Shahidian

Iranian Institute of Research and Design in Chemical Industries (Acecr), Karaj, Iran

Azadeh Papan

Iranian Institute of Research and Design in Chemical Industries (Acecr), Karaj, Iran

Fatemeh Tavakolzadeh

Iranian Institute of Research and Design in Chemical Industries (Acecr), Karaj, Iran

Sara Beshkoofeh

Iranian Institute of Research and Design in Chemical Industries (Acecr), Karaj, Iran