کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1654721 | 1517350 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of mesoporous Al2O3 macrospheres using the biopolymer chitosan as a template: A novel active catalyst system for CO2 reforming of methane
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
A new and simple method to prepare alumina containing mainly mesopores is described. This alumina has a high surface area (464 m2/g) and a large pore volume ranging from about 0.35 to 0.65 cm3/g. The present method was developed using a biopolymer (chitosan) and Al solution. The Al–chitosan solution was added to NH4OH solution in the form of drops. A hybrid macrosphere compound of aluminum hydroxide and organic polymer is formed. Through polymer elimination by thermal treatment, porous Al2O3 spheres with a high specific surface area are obtained. The Ni-impregnated Al2O3 spheres showed a high catalytic activity and stability for dry reforming of methane at 650 °C and a CH4 / CO2 = 1 molar ratio.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 59, Issues 29–30, December 2005, Pages 3963–3967
Journal: Materials Letters - Volume 59, Issues 29–30, December 2005, Pages 3963–3967
نویسندگان
Humberto V. Fajardo, Amarildo O. Martins, Rusiene M. de Almeida, Lúcia K. Noda, Luiz F.D. Probst, Neftalí L.V. Carreño, Antoninho Valentini,