J
José J.M. Órfão
Researcher at University of Porto
Publications - 177
Citations - 15151
José J.M. Órfão is an academic researcher from University of Porto. The author has contributed to research in topics: Catalysis & Activated carbon. The author has an hindex of 58, co-authored 175 publications receiving 13411 citations. Previous affiliations of José J.M. Órfão include Faculdade de Engenharia da Universidade do Porto & Instituto Superior de Engenharia do Porto.
Papers
More filters
Journal ArticleDOI
Hydrogenation of nitrobenzene over nickel nanoparticles stabilized by filamentous carbon
TL;DR: In this paper, a skeletal Raney-type skeletal nickel catalyst was used as a catalyst for the hydrogenation of nitrobenzene, and the active phase of the catalysts consists of nickel nanoparticles in reduced form with superficial oxide layers.
Journal ArticleDOI
The role of multiwalled carbon nanotubes (MWCNTs) in the catalytic ozonation of atrazine
Xiaolei Fan,Xiaolei Fan,João Restivo,José J.M. Órfão,Manuel Fernando R. Pereira,Alexei A. Lapkin +5 more
TL;DR: In this article, multiwalled carbon nanotubes (MWCNTs) were used as catalysts in ozonation of atrazine in aqueous solutions.
Journal ArticleDOI
Stabilized gold on cerium-modified cryptomelane: Highly active in low-temperature CO oxidation
Vera P. Santos,Sónia A. C. Carabineiro,Jasper J. W. Bakker,Olívia S. G. P. Soares,Xiaowei Chen,Manuel Fernando R. Pereira,José J.M. Órfão,José L. Figueiredo,Jorge Gascon,Freek Kapteijn +9 more
TL;DR: Cerium-doped cryptomelane stabilizes polyhedron Au nano-particles smaller than 3nm as mentioned in this paper, and is highly active for CO oxidation for gold.
Journal ArticleDOI
Exotemplated ceria catalysts with gold for CO oxidation
Sónia A. C. Carabineiro,S.S.T. Bastos,José J.M. Órfão,Manuel Fernando R. Pereira,Juan José Delgado,José L. Figueiredo +5 more
TL;DR: In this article, the catalytic performance of these ceria oxide materials alone and loaded with gold was tested in the oxidation of carbon monoxide, showing that the activity depends on the availability of surface oxygen.
Journal ArticleDOI
Carbon supported Ru-Ni bimetallic catalysts for the enhanced one-pot conversion of cellulose to sorbitol
TL;DR: Ru and Ni mono-and bimetallic catalysts were prepared by impregnation of two different supports (activated carbon and carbon nanotubes) and were characterized by TPR, TEM and N2 adsorption at −196°C as discussed by the authors.