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Flávio A. de Freitas

Observed names: Augusto de Freitas, Flávio, F.A. de Freitas, Flavio A. Freitas, Flavio A. de Freitas, Flavio Augusto Freitas, Flavio Augusto de Freitas, Flávio A. Freitas, Flávio Augusto De Freitas, Flávio Augusto Freitas, Flávio Augusto de FREITAS, Flávio Augusto de Freitas, Freitas, Flávio Augusto de
Observed institutions: Universidade Federal do Rio de Janeiro, Amazon (United States), Universidade Federal Rural do Rio de Janeiro, Instituto Nacional de Pesquisas da Amazônia, Curtin University, Universidade do Estado do Amazonas, Instituto Federal do Amazonas, Universidade Federal do Amazonas
ORCID: 0000-0001-7940-4910
Observed ORCID: 0000-0001-7940-4910
OpenAlex ID: A5046875144
New heterogeneous catalyst for biodiesel production from waste tucumã peels (Astrocaryum aculeatum Meyer): Parameters optimization study
2018 · Iasmin M. Mendonça, Orlando A.R.L. Paes, et al. · Renewable Energy · 246
Pineapple (Ananás comosus) leaves ash as a solid base catalyst for biodiesel synthesis
2020 · Silma de S. Barros, Wanison A.G. Pessoa Junior, et al. · Bioresource Technology · 143
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Application of calcined waste cupuaçu (Theobroma grandiflorum) seeds as a low-cost solid catalyst in soybean oil ethanolysis: Statistical optimization
2019 · Iasmin Maquiné Mendonça, Flavia Lopes Machado, et al. · Energy Conversion and Management · 81
Synthesis and evaluation of the potential of nonionic surfactants/mesoporous silica systems as nanocarriers for surfactant controlled release in enhanced oil recovery
2019 · Flávio A. de Freitas, David Keils, et al. · Fuel · 66
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The Synergic Effect of h -MoO 3 , α-MoO 3 , and β-MoO 3 Phase Mixture as a Solid Catalyst to Obtain Methyl Oleate
2024 · Gabrielle Sophie Medeiros Leão, Marcos Daniel Silva Ribeiro, et al. · ACS Applied Materials & Interfaces · 52
Enhanced conversion of used palm cooking oil to biodiesel by a green and recyclable palm kernel shell ash-derived catalyst: Process optimization by response surface methodology
2024 · Lidya Novita, Safni, et al. · Case Studies in Chemical and Environmental Engineering · 49
Heterogeneous catalysis for the ketalisation of ethyl levulinate with 1,2-dodecanediol: Opening the way to a new class of bio-degradable surfactants
2015 · Flávio A. Freitas, Domenico Licursi, et al. · Catalysis Communications · 46
Application of water treatment sludge as a low-cost and eco-friendly catalyst in the biodiesel production via fatty acids esterification: Process optimization
2020 · Wanison A.G. Pessoa Junior, Mitsuo L. Takeno, et al. · Energy · 42
Biodiesel Production From Fatty Acids of Refined Vegetable Oils by Heterogeneous Acid Catalysis and Microwave Irradiation
2015 · Michele C. Reis, Flavio A. Freitas, et al. · Química Nova · 36
Removal of rhodamine 6G from synthetic effluents using Clitoria fairchildiana pods as low-cost biosorbent
2019 · Andreza Miranda Barata da Silva, Naiany Oliveira Serrão, et al. · Environmental Science and Pollution Research · 31
Biological evaluation and quantitative analysis of antioxidant compounds in pulps of the Amazonian fruits bacuri (Platonia insignisMart.), ingá (Inga edulisMart.), and uchi (Sacoglottis uchiHuber) by UHPLC-ESI-MS/MS
2017 · Flávio A. de Freitas, Rafael C. Araújo, et al. · Journal of Food Biochemistry · 31
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Copper molybdate synthesized by sonochemistry route at room temperature as an efficient solid catalyst for esterification of oleic acid
2021 · J.L. Silva Junior, F.X. Nobre, et al. · Ultrasonics Sonochemistry · 30
A novel CaO-based catalyst obtained from silver croaker (Plagioscion squamosissimus) stone for biodiesel synthesis: Waste valorization and process optimization
2021 · Mitsuo L. Takeno, Iasmin M. Mendonça, et al. · Renewable Energy · 28
Alkyl glyceryl ethers as water-based lubricant additives in mixtures with xanthan gum
2021 · Fernando H.M. de Paula, Flávio A. de Freitas, et al. · Colloids and Surfaces A Physicochemical and Engineering Aspects · 26
A critical review on biofuels generation from pulp-paper mill sludge with emphasis on pretreatment methods: renewable energy for environmental sustainability
2025 · Vineet Kumar, Pradeep Verma, et al. · BMC Environmental Science · 24
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Photophysical properties of a perylene derivative for use as catalyst in ethanol eletrooxidation
2019 · Paulo José Sousa Maia, Julianna Ferreira Cruz, et al. · Research on Chemical Intermediates · 24
Development of sustainable cellulose‐based materials from oil palm bunch fiber waste from the Amazon region
2025 · Silma de Sá Barros, Bruno Las‐Casas, et al. · Polymer International · 22
Sementes de açaí (Euterpe precatoria Mart.) como uma nova fonte alternativa de celulose: Extração e caracterização
2021 · Silma de Sá Barros, Erick da Silva Oliveira, et al. · Research Society and Development · 22
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Synthesis and characterization of a perylene derivative and its application as catalyst for ethanol electro-oxidation
2017 · Paulo José Sousa Maia, Elizomar Medeiros Barbosa, et al. · Chemical Papers · 22
Application of chemically modified palm ( Elaeis guineensis ) bunch fibers in the biosorption of methylene blue: kinetic and thermodynamic parameters
2025 · Flávio Augusto de Freitas, Orlando Amazonas da Rocha Loureiro Paes, et al. · Biofuels Bioproducts and Biorefining · 20
Value aggregation of pine (Araucaria angustifolia) nuts agro-industrial waste by cellulose extraction
2021 · Silma de Sa Barros, Wanison André Gil Pessoa Jr., et al. · Research Society and Development · 20
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Curauá fiber from plants produced by tissue culture: thermal, mechanical, and morphological characterizations
2023 · Ana E. M. de Freitas, Felipe de J. Padilha, et al. · Cellulose · 18
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Application of sulfonated passion fruit seeds as a heterogeneous catalyst in the esterification of oleic and levulinic acids: Optimization of reaction parameters
2025 · Wyvirlany V. Lobo, Orlando A.R.L. Paes, et al. · Renewable Energy · 16
Removal of rhodamine B and methylene blue using residual Onecarpus bacaba Mart fibers as biosorbent: kinetic and thermodynamic parameters
2024 · Eberlanny Moraes Rolim, Andreza Miranda Barata da Silva, et al. · Discover Water · 15
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Biodiesel production from tucumã (Astrocaryum aculeatum Meyer) almond oil applying the electrolytic paste of spent batteries as a catalyst
2022 · Flávio A. de Freitas, Igor R.S. Mendonça, et al. · Renewable Energy · 14
Works count: 73
Citation count: 1,273
H-index: 20
I10-index: 29
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