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Iranian Journal of Materials Science and Engineering، جلد ۸، شماره ۴، صفحات ۵۰-۵۶
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عنوان انگلیسی EFFECT OFACID ACTIVATION ON STRUCTURALAND BLEACHING PROPERTIES OFABENTONITE
چکیده انگلیسی مقاله  A natural bentonite obtained from Khorasan, Iran, was submitted to acid activation with sulphuric acid. Sample aliquots (5gr)were leached with 100 ml H2SO4 solutions of various concentrations (2–7N) at 80±2 oC for 2 hours. X–ray diffraction, chemical analysis, infrared spectroscopy and specific surface area measurements were performed in order to evaluate important structural modifications occurring as a result of acid attack. Octahedral sheet was affected by acid activation resulting into the dissolution of cations (Mg2+, Fe2+, Al3+) and consequent decomposition of montmorillonite structure. Bentonite samples were then tested in order to verify their capacity to bleach colza–soybean oil, and their performances were compared to that of a commercial bleaching clay. The bleaching ability of the natural clay was poor when compared with that of the industrial adsorbent. Acid activation of the bentonite sample with 7N sulphuric acid yielded an adsorbent material which was highly efficient in the bleaching of the oil functioned better than the commercial clay product under the same conditions.
کلیدواژه‌های انگلیسی مقاله Acid activation, Bentonite, Oil bleaching
نویسندگان مقاله m m کاشانی مطلق | m m kashani motlagh
department of chemistry, iran university of science and technology, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علم و صنعت ایران (Iran university of science and technology)

a a یوزباشی | a a youzbashi
department of semiconductors, materials and energy research centre, meshkin dasht, karaj, iran.


z امیری ریگی | z amiri rigi
department of chemistry, iran university of science and technology, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علم و صنعت ایران (Iran university of science and technology)

نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-3-159&slc_lang=en&sid=en
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کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده گروه مهندسی مواد . مباحث ویژه
نوع مقاله منتشر شده Research paper
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