World's Best Scientists 2026 revealed!
José J.M. Órfão

José J.M. Órfão

D-Index & Metrics

Chemistry

D-Index
73
Citations
21228
World Ranking
4906
National Ranking
38

Overview

What is he best known for?

The fields of study he is best known for:

  • Catalysis
  • Organic chemistry
  • Oxygen

José J.M. Órfão spends much of his time researching Catalysis, Inorganic chemistry, Activated carbon, Adsorption and Carbon. The concepts of his Catalysis study are interwoven with issues in Carbon nanotube, Oxygen and Mineralization. His biological study spans a wide range of topics, including Aniline, Reactive dye and Catalytic oxidation.

His Activated carbon study introduces a deeper knowledge of Organic chemistry. His work investigates the relationship between Adsorption and topics such as Thermal treatment that intersect with problems in Dye molecule and Cationic polymerization. José J.M. Órfão brings together Carbon and Spectral line to produce work in his papers.

His most cited work include:

  • Modification of the surface chemistry of activated carbons (2186 citations)
  • Pyrolysis kinetics of lignocellulosic materials—three independent reactions model (608 citations)
  • Adsorption of anionic and cationic dyes on activated carbons with different surface chemistries. (544 citations)

What are the main themes of his work throughout his whole career to date?

His primary areas of study are Catalysis, Inorganic chemistry, Activated carbon, Carbon and Adsorption. José J.M. Órfão has included themes like Oxalic acid, Carbon nanotube and Mineralization in his Catalysis study. His Inorganic chemistry research incorporates themes from Bimetallic strip, Oxide, Catalytic oxidation and Nitrogen.

His Activated carbon course of study focuses on Ozone and Sulfur. When carried out as part of a general Carbon research project, his work on Carbon nanofiber is frequently linked to work in Filamentous carbon, therefore connecting diverse disciplines of study. His work deals with themes such as Peroxide, Hydrogen peroxide and Nuclear chemistry, which intersect with Adsorption.

He most often published in these fields:

  • Catalysis (83.15%)
  • Inorganic chemistry (64.61%)
  • Activated carbon (34.83%)

What were the highlights of his more recent work (between 2016-2021)?

  • Catalysis (83.15%)
  • Cellulose (8.43%)
  • Adsorption (25.84%)

In recent papers he was focusing on the following fields of study:

His scientific interests lie mostly in Catalysis, Cellulose, Adsorption, Carbon and Carbon nanotube. Organic chemistry covers José J.M. Órfão research in Catalysis. His research in Adsorption intersects with topics in Inorganic chemistry, Ethyl acetate and Nuclear chemistry.

His primary area of study in Inorganic chemistry is in the field of Cerium. He has included themes like Coke, Oxidative phosphorylation, Raman spectroscopy and Glycerol in his Carbon study. His work in Bromate covers topics such as Titanium dioxide which are related to areas like Activated carbon.

Between 2016 and 2021, his most popular works were:

  • Carbon supported Ru-Ni bimetallic catalysts for the enhanced one-pot conversion of cellulose to sorbitol (49 citations)
  • Effect of cobalt loading on the solid state properties and ethyl acetate oxidation performance of cobalt-cerium mixed oxides. (38 citations)
  • Catalytic reduction of bromate over monometallic catalysts on different powder and structured supports (28 citations)

In his most recent research, the most cited papers focused on:

  • Catalysis
  • Organic chemistry
  • Oxygen

José J.M. Órfão mainly focuses on Catalysis, Adsorption, Inorganic chemistry, Cellulose and Sorbitol. His Catalysis research integrates issues from Activated carbon, Ethyl acetate, Carbon nanotube and Nuclear chemistry. His Activated carbon research is multidisciplinary, relying on both Heterogeneous catalysis, Bimetallic strip, Carbon and Nickel.

The various areas that José J.M. Órfão examines in his Adsorption study include Oxide, Cobalt, Oxygen, Atomic ratio and Catalytic oxidation. His study of Cerium is a part of Inorganic chemistry. His Sorbitol research is multidisciplinary, incorporating perspectives in Polymer chemistry, Thermogravimetry, Crystallinity, Tissue paper and Cellulosic ethanol.

Best Publications

  • Modification of the surface chemistry of activated carbons

    J.L Figueiredo;M.F.R Pereira;M.M.A Freitas;J.J.M Órfão

  • Pyrolysis kinetics of lignocellulosic materials—three independent reactions model

    J.J.M. Orfão;F.J.A. Antunes;J.L. Figueiredo

  • Adsorption of anionic and cationic dyes on activated carbons with different surface chemistries.

    P.C.C Faria;J.J.M Órfão;M.F.R Pereira

  • Adsorption of dyes on activated carbons: influence of surface chemical groups

    Manuel Fernando R Pereira;Samanta F Soares;José J.M Órfão;José L Figueiredo

  • The role of lattice oxygen on the activity of manganese oxides towards the oxidation of volatile organic compounds

    V.P. Santos;M.F.R. Pereira;J.J.M. Órfão;J.L. Figueiredo

  • Adsorption of a reactive dye on chemically modified activated carbons—Influence of pH

    J.J.M. Órfão;A.I.M. Silva;J.C.V. Pereira;S.A. Barata

  • Adsorption of simple aromatic compounds on activated carbons.

    Francisco Villacañas;Manuel Fernando R. Pereira;José J.M. Órfão;José L. Figueiredo

  • Characterization of Active Sites on Carbon Catalysts

    José L. Figueiredo;Manuel F. R. Pereira;Maria M. A. Freitas;José J. M. Orfao

  • Activated carbon catalytic ozonation of oxamic and oxalic acids

    P.C.C. Faria;J.J.M. Órfão;M.F.R. Pereira

  • Oxidative dehydrogenation of ethylbenzene on activated carbon catalysts. I. Influence of surface chemical groups

    M.F.R. Pereira;J.J.M. Órfão;J.L. Figueiredo

  • Oxidation of CO, ethanol and toluene over TiO2 supported noble metal catalysts

    Vera P. Santos;Sónia A.C. Carabineiro;Pedro B. Tavares;Manuel F.R. Pereira

  • MWCNT activation and its influence on the catalytic performance of Pt/MWCNT catalysts for selective hydrogenation

    A. Solhy;B.F. Machado;J. Beausoleil;Y. Kihn

  • Structural and chemical disorder of cryptomelane promoted by alkali doping: Influence on catalytic properties

    V.P. Santos;O.S.G.P. Soares;J.J.W. Bakker;M.F.R. Pereira

  • Decolourisation of dye solutions by oxidation with H2O2 in the presence of modified activated carbons

    V.P. Santos;M.F.R. Pereira;P.C.C. Faria;J.J.M. Órfão

  • Influence of the surface chemistry of multi-walled carbon nanotubes on their activity as ozonation catalysts

    Alexandra G. Gonçalves;José L. Figueiredo;José J.M. Órfão;Manuel F.R. Pereira

  • Activated carbon and ceria catalysts applied to the catalytic ozonation of dyes and textile effluents

    P.C.C. Faria;J.J.M. Órfão;M.F.R. Pereira

  • Catalytic ozonation of sulphamethoxazole in the presence of carbon materials: catalytic performance and reaction pathways.

    Alexandra G. Gonçalves;José J.M. Órfão;Manuel Fernando R. Pereira

  • Mineralisation of coloured aqueous solutions by ozonation in the presence of activated carbon

    Patrícia C.C. Faria;José J.M. Órfão;Manuel Fernando R. Pereira

  • Catalytic activity of carbon nanotubes in the oxidative dehydrogenation of ethylbenzene

    Manuel Fernando R. Pereira;José L. Figueiredo;José J.M. Órfão;Philippe Serp

  • Ozonation of textile effluents and dye solutions under continuous operation: Influence of operating parameters.

    Olívia Salomé G.P. Soares;José J.M. Órfão;Dionísia Portela;António Vieira

Frequent Co-Authors

Manuel Fernando R. Pereira
Manuel Fernando R. Pereira University of Porto
José L. Figueiredo
José L. Figueiredo University of Porto
Sónia A. C. Carabineiro
Sónia A. C. Carabineiro Universidade Nova de Lisboa
Juan José Delgado
Juan José Delgado University of Cádiz
Xiaowei Chen
Xiaowei Chen University of Cádiz
Joaquim L. Faria
Joaquim L. Faria University of Porto
Josep Font
Josep Font University of Barcelona
Michalis Konsolakis
Michalis Konsolakis Technical University of Crete
Antonio Sepúlveda-Escribano
Antonio Sepúlveda-Escribano University of Alicante
Inmaculada Rodríguez-Ramos
Inmaculada Rodríguez-Ramos Spanish National Research Council

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