Academic Journal
أعرض في EDS

Propriedades texturais e catalíticas de óxidos de ferro contendo cromo e cobre Textural and catalytic properties of chromium and copper-doped iron oxides

التفاصيل البيبلوغرافية
العنوان: Propriedades texturais e catalíticas de óxidos de ferro contendo cromo e cobre Textural and catalytic properties of chromium and copper-doped iron oxides
المؤلفون: Marluce Oliveira da Guarda Souza, Emerentino Brazil Quadro, Maria do Carmo Rangel
المصدر: Química Nova, Vol 21, Iss 4, Pp 428-433 (1998)
بيانات النشر: Sociedade Brasileira de Química, 1998.
سنة النشر: 1998
المجموعة: LCC:Chemistry
مصطلحات موضوعية: iron oxides, copper-doped catalysts, chromium-doped catalysts, Chemistry, QD1-999
الوصف: Chromium and copper-doped hematites were prepared with the aim of studying the synergistic effect of these dopants on the textural and on the catalytic properties of the iron oxides towards the high temperature shift reaction. It was found that the most active catalysts were those with the highest amount of copper. They had the Fe(II)/Fe(III) ratio near the stoichiometric value of magnetite, the highest surface areas under the reactional atmosphere and the greatest tendency to produce the active form; they also were poorly crystalline solids. The best performance was shown by the catalyst with Fe/Cu=10, heated at 300ºC. It can thus be concluded that copper acts both as textural and structural promoter in these catalysts.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
Spanish; Castilian
Portuguese
تدمد: 0100-4042
1678-7064
Relation: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40421998000400010; https://doaj.org/toc/0100-4042; https://doaj.org/toc/1678-7064
DOI: 10.1590/S0100-40421998000400010
URL الوصول: https://doaj.org/article/0e546012fcef4e3eaff53738ec95a2c8
رقم الانضمام: edsdoj.0e546012fcef4e3eaff53738ec95a2c8
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:01004042
16787064
DOI:10.1590/S0100-40421998000400010