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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Journal of Porous Media
Импакт фактор: 1.49 5-летний Импакт фактор: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN Печать: 1091-028X
ISSN Онлайн: 1934-0508

Выпуски:
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Journal of Porous Media

DOI: 10.1615/JPorMedia.v20.i11.20
pages 971-976

PREPARATION AND CHARACTERIZATION OF Co-Cu BIMETALLIC SHAPED CATALYST SUPPORTED ON TiO2

Vida Nourozi Rad
Department of Chemistry, Science and Research Branch, Islamic Azad University, Poonak-Hesarak, Tehran, Iran
Mansoor Anbia
Research Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University of Science and Technology, Farjam Street, Narmak, P.O. Box 16846-13114, Tehran, Iran
Moayed Hossaini Sadr
Department of Chemistry, Science and Research Branch, Islamic Azad University, Poonak-Hesarak, Tehran, Iran
Karim Zare
Department of Chemistry, Science and Research Branch, Islamic Azad University, Poonak-Hesarak, Tehran, Iran

Краткое описание

Bimetallic Co-Cu/TiO2 catalyst was prepared through a co-impregnation method with anatase-TiO2 as support. The catalyst powder was shaped by three different binders (bentonite, polyvinyl alcohol, and polyethylene glycol) into extrudes. Samples were characterized using X-ray powder diffraction, temperature-programmed reduction (TPR), Brunauer–Emmett–Teller analysis, Barrett–Joyner–Halenda analysis, scanning electron microscopy (SEM), and energy dispersive X-ray techniques. Among the catalysts prepared, an optimal catalyst with the composition 65% TiO2 and a mixture of 1% polyvinyl alcohol, 2% PEG-1000, and 25% bentonite was selected with suitable properties. The specific surface area of the catalyst was found to be 127 m2·g-1 with a pore diameter of 9.28 nm. TPR results reveal that the presence of Cu lowers the reduction temperature of Co. The TPR profile is in good agreement with the results shown by SEM that the metal species were well dispersed over the TiO2 support.

Ключевые слова: anatase-TiO2, binder, bimetallic catalyst, extrude