A5030617376- Biodiesel Production and Applications
- Catalysis and Hydrodesulfurization Studies
- Lubricants and Their Additives
- Enzyme Catalysis and Immobilization
- Catalysis for Biomass Conversion
- Thermochemical Biomass Conversion Processes
- Edible Oils Quality and Analysis
- Agricultural and Food Sciences
- Phytochemicals and Antioxidant Activities
- Microbial Metabolic Engineering and Bioproduction
- Biofuel production and bioconversion
- biodegradable polymer synthesis and properties
- Natural Products and Biological Research
- Thermal and Kinetic Analysis
- Antioxidant Activity and Oxidative Stress
- Food Chemistry and Fat Analysis
- Botanical Research and Applications
- Essential Oils and Antimicrobial Activity
- Heavy Metals in Plants
- Bee Products Chemical Analysis
- Amazonian Archaeology and Ethnohistory
- Insect Utilization and Effects
- Growth and nutrition in plants
- Catalytic Processes in Materials Science
- Dye analysis and toxicity
Universidade Federal do Pará
2013-2025
Graduate School USA
2020
Institute of Catalysis and Petrochemistry
2020
Amazon Research Foundation
2020
Universidade de São Paulo
2016-2019
In the present study, heterogeneous acid catalysts for fatty esterification reactions were synthesized using agro-industrial waste from murumuru kernel shells. The was carbonized and functionalized with concentrated sulfuric under different sulfonation conditions, obtaining sulfonated biochar. results indicate that best conditions obtained a contact time of 4 h, temperature 200 °C, solid-acid ratio 1 : 10 (w/v). catalyst characterized by acid-base titration determination total density, X-ray...
The influence of pyrolysis temperature on the activity and catalytic stability sulfonated biochar, from agro-industrial residue murumuru kernel shell, was evaluated in esterification reaction. Carbonaceous materials were synthesized by direct at 450, 600 750 °C functionalized with sulfuric acid 200 for a 4 h period. characterized density sulfonic groups, SEM, EDS, Elementary Analysis, ATR-FTIR, Raman Spectroscopy, TG XPS analysis. data obtained showed that functionalization occurred directly...
This study investigates the use of bean husks as a precursor for synthesis an efficient and regenerable catalyst, with aim offering economical sustainable alternative biodiesel production. Residual shell biomass (RBBH) was calcined at different temperatures (350-500 °C) times (1-4 h) to determine optimum conditions. The catalyst obtained characterized by various methods, such X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), Energy...
Heteropolyacids (HPA) with Keggin structures, such as H3PMo12O40 (H3PMo), have been described efficient catalysts in trans/esterification reactions due to their tolerance water and free fatty acids contents, particularly well-suited characteristics of high proton mobility stability. The versatile array HPA is considerably increased when are supported onto solid matrices. In this sense, Al2O3 was assessed support for H3PMo be used produce biodiesel from high-acid feedstocks. catalyst...
This study aims to synthesize a WO 3 /CuFe 2 O 4 catalyst through wet impregnation method and use it as new magnetic acid in the transesterification process of waste cooking oil (WCO).
In the present study, a new magnetic acid solid catalyst composed of an agro-industrial waste (rice husk ash-RHA) magnetized with cobalt ferrite (CoFe2O4) and impregnated MoO3 was synthesized applied in methyl transesterification reaction frying oil (WFO) for biodiesel production. The by wet impregnation method characterized following techniques: surface acidity, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy dispersion...
The focus on diversity in the Amazon forest is related to fruits and oilseeds that have diverse nutritional functional values their composition contribute human health. Therefore, this research aims study constituents of lipid extracts obtained from peach palm (Bactris gasipaes Kunt) red variety by green extraction with assistance ultrasound probe. methodology followed established internationally accepted standards, comparative analyses quality oils, fatty acid profile gas chromatography...
This study represents a pioneering investigation and comparative analysis of lipid extracts from four different colors peach palm (Bactris gasipaes Kunt) fruits—red, yellow, green, white—by employing green method based on ethanolic ultrasound-assisted extraction. examined the extraction yield, physico-chemical-quality attributes, chromatographic profiles (GC), color measurements, total carotenoid content, differential thermogravimetry (TG/DTA), infrared spectroscopy (FTIR). The obtained...
This study investigates the potential and applicability of a novel solid magnetic catalyst constructed by incorporating molybdenum oxide (MoO3) into zinc ferrite (ZnFe2O4) to biodiesel production using Waste Frying Oil (WFO) as residual raw material. The amounts (5, 15, 25, 35 45%) present in were studied demonstrated great characteristics high acid properties, well superior catalytic attributes. one variable at time (OVAT) optimization method revealed that application MoO3/ZnFe2O4 resulted...