J
José Roberto Zamian
Researcher at Federal University of Pará
Publications - 49
Citations - 1589
José Roberto Zamian is an academic researcher from Federal University of Pará. The author has contributed to research in topics: Catalysis & Biodiesel. The author has an hindex of 19, co-authored 46 publications receiving 1191 citations. Previous affiliations of José Roberto Zamian include Federal University of São Carlos.
Papers
More filters
Journal ArticleDOI
Production of biodiesel by esterification of palmitic acid over mesoporous aluminosilicate Al-MCM-41
Alipio C. Carmo,Luiz K. C. de Souza,Carlos E.F. da Costa,Elson Longo,José Roberto Zamian,Geraldo Narciso da Rocha Filho +5 more
TL;DR: In this paper, the catalytic acids were synthesized at room temperature and characterized by atomic absorption spectrometry (AAS), thermal analysis (TG/DTA), X-ray diffraction (XRD), nitrogen absorption (BET/BJH), infrared spectroscopy (IR), scanning electron microscopy (SEM) and transmission electron microscope (TEM).
Journal ArticleDOI
Blue pigments based on CoxZn1−xAl2O4 spinels synthesized by the polymeric precursor method
Luiz K. C. de Souza,José Roberto Zamian,Geraldo Narciso da Rocha Filho,Luiz E. B. Soledade,Ieda M. G. Santos,Antonio G. Souza,T. Scheller,Rômulo Simões Angélica,Carlos Costa +8 more
TL;DR: The CoxZn1−xAl2O4 system was synthesized by the polymeric precursor method and characterized by the techniques XRD, TG-DTA, IR, UV-vis and colorimetry as discussed by the authors.
Journal ArticleDOI
Esterification of oleic acid over solid acid catalysts prepared from Amazon flint kaolin
Luís Adriano Santos do Nascimento,Laura M.Z. Tito,Rômulo Simões Angélica,Carlos E.F. da Costa,José Roberto Zamian,Geraldo Narciso da Rocha Filho +5 more
TL;DR: In this paper, a new eco-friendly catalyst for the esterification of oleic acid with methanol has been prepared from a waste material, Amazon flint kaolin, that was thermally treated (at 850 and 950°C) and activated with sulfuric acid solutions (1 and 4 m).
Journal ArticleDOI
Determination of the oxidative stability by DSC of vegetable oils from the Amazonian area.
Juliana J. R. Pardauil,Luiz K. C. de Souza,Fábio Alberto de Molfetta,José Roberto Zamian,Geraldo Narciso da Rocha Filho,C. E. F. da Costa +5 more
TL;DR: Differential scanning calorimetry and a Rancimat method apparatus were applied to evaluate the oxidative stability of buriti pulp oil, rubber seed oil, and passion fruit oil to indicate a good correlation between the DSC T(0) and oxidative stability index (OSI) values.
Journal ArticleDOI
Optimization of biodiesel production using sulfonated carbon-based catalyst from an amazon agro-industrial waste
Rafael Roberto Cardoso Bastos,Ana Paula da Luz Corrêa,Patrícia Teresa Souza da Luz,Geraldo Narciso da Rocha Filho,José Roberto Zamian,Leyvison Rafael Vieira da Conceição +5 more
TL;DR: Murumuru kernel shell, an agro-industrial waste, was used as the precursor biomass in the synthesis of an acid biochar that was employed as a catalyst in the production of biodiesel originated from jupati oil.