A5023320354- Biodiesel Production and Applications
- Advanced Combustion Engine Technologies
- Vehicle emissions and performance
- Catalysis and Hydrodesulfurization Studies
- Mesoporous Materials and Catalysis
- Enzyme Catalysis and Immobilization
- Catalysis for Biomass Conversion
- Zeolite Catalysis and Synthesis
- Polyoxometalates: Synthesis and Applications
- Catalytic Processes in Materials Science
- Engineering Applied Research
- Multicomponent Synthesis of Heterocycles
- Pigment Synthesis and Properties
- Chemistry Education and Research
- Enzyme-mediated dye degradation
- Soil Geostatistics and Mapping
- Mosquito-borne diseases and control
- Pesticide and Herbicide Environmental Studies
- Transportation Systems and Safety
- Wireless Sensor Networks for Data Analysis
- Scientific Measurement and Uncertainty Evaluation
- Engine and Fuel Emissions
- Supercapacitor Materials and Fabrication
- Technical Engine Diagnostics and Monitoring
- Chromium effects and bioremediation
Universidade Federal do Amapá
2019-2024
Universidade Federal do Pará
2012-2024
Amazon (United States)
2024
University of Florence
2022
Universidade Federal do Rio de Janeiro
2022
Agricultural Biotechnology Institute
2022
Biocat
2022
Bioinova (Czechia)
2022
Pontifícia Universidade Católica de Minas Gerais
2012-2021
Centro Universitário de Belo Horizonte
2021
This review provides a state-of-the-art summary of distributed zeolite technology, as well identifying strategies to further promote the absorption these materials in various areas study. Zeolites are that can be synthesized or found natural rock deposits with basic composition consisting Al, Si, and O. Zeolite’s consideration future material is due many facile synthesis methods obtain different structures variations pore size, surface area, volume physical properties. These developed using...
This paper analyses the impacts of application an exhaust gas recirculation (EGR) system on performance and emissions a stationary, direct-injection diesel engine operating with oil containing 7% biodiesel (B7). Experiments were carried out in 49-kW power generator adapted EGR system, evaluated for different load settings. The results compared its original configuration without revealed reduction peak cylinder pressure fuel conversion efficiency, mainly at high loads. use caused opposite...
Two bentonites from Paraíba (Northeastern Brazil) were impregnated with heteropoly phosphomolybdic H3PMo12O40 (HPMo). The materials produced characterized by various techniques such as N2 adsorption-desorption (specific surface area, SSA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Thermogravimetric analysis (TGA/DTG), Scanning Electron Microscopy (SEM) equipped Dispersive Energy (EDS), ultraviolet-visible (UV-vis), acid-base titration analysis. catalytic...
The growing global demand for renewable energy sources can be reached using biofuels such as biodiesel, example. most used route to produce biodiesel is the transesterification reaction of oils or fats with short-chain alcohols, generating fatty acid esters (biodiesel) and a very important by-product, glycerol (Gly). Gly widely in different sectors industry, order add value this heterogeneous catalysis becomes relevant tool, whether transform into other chemical products interest even use it...
Glycerol is a platform molecule allowing the production of high value-added molecules with numerous industrial applications in many different fields.
Amazon flint kaolin, considered useless from an economic and industrial point of view, was calcined at 850 950 °C to obtain metakaolin samples. These samples were subsequently treated with sulfuric acid (4 M) by assisted heating microwave radiation. The prepared characterized X-ray diffraction, scanning electron microscopy N2 physisorption; the surface acidity determined titration 0.2 M KOH. materials obtained used as catalysts in esterification oleic methanol. Metakaolin that activated 400...
A new prepared catalyst, 12-molybdophosphoric acid (HPMo) anchored to the mesoporous aluminosilicate AlSiM, synthesized from Amazon kaolin, was characterized and used as a heterogeneous catalyst for production of eugenyl acetate by acetylation eugenol with acetic anhydride. The effect various reaction parameters, such concentration, eugenol/acetic anhydride molar ratio, temperature time, studied optimize conditions maximum conversion eugenol. kinetics studies showed that in acetylation,...
O objetivo deste trabalho foi identificar a estrutura de dependência espacial atributos do solo e sua interferência na produção biomassa epígea pastagem capim‑marandu (Urochloa brizantha). Amostras Latossolo Vermelho‑Amarelo foram coletadas em rede pontos georreferenciados, para determinação físicos químicos da pastagem, no verão outono 2010/2011. Verificou-se das variáveis, por meio análise geoestatística com construção ajuste semivariogramas, interpolação krigagem ordinária espacialização...
The present work was aimed to investigate the catalytic activity of a mesoporous catalyst synthesized from 3-mercaptopropyltrimethoxysilane (MPTS) functionalized Amazonian flint kaolin in acetylation eugenol with acetic anhydride. Materials were characterized by thermogravimetry (TGA), N2 adsorption (BET), X-ray dispersive energy spectroscopy (EDX), diffraction (XRD), Fourier transform infrared (FTIR) and acid-base titration. results presented proved efficiency as an alternative source...
This work presents the application of an exhaust gas recirculation (EGR) system in a direct injection diesel engine operating with oil containing 7% biodiesel (B7). EGR rates up to 10% were applied primary aim reduce oxides nitrogen (NOx) emissions. The experiments conducted 44 kW power generator evaluate performance and emissions for different load settings. use caused peak pressure reduction during combustion process decrease thermal efficiency, mainly at high loads. A NOx 26% was...
The distillate from the deodorization of palm oil (DDPO) is an agro-industrial residue, approximately 84% which consists free fatty acids (FFAs), can be used for production acid ethyl esters (FAEE). A catalyst (10HPMo/AlSiM) obtained a waste material, Amazon flint kaolin, was applied in esterification DDPO, reaching conversion index 94%, capable maintaining satisfactory activity (>75%) after four consecutive cycles. Flint kaolin therefore proven to efficient option search new...
Background: Biodiesel has been shown to be effectively produced by immobilized enzymatic catalysts. The selection of support material is a prominent factor for obtaining an efficient lipase. Silk fibroin (SF) natural polymer glands some arthropods, especially the Bombyx mor, attracting attention immobilization Objective: This paper presents novel method obtain silk microfibers (SMF) from Oxone® salt in water, used as Amano AK lipase Pseudomonas fluorescens biodiesel production deodorization...
Brazil's territory encloses six terrestrial biomes (Amazon, Pantanal, Savannah, Atlantic Rainforest, and Caatinga-Savannah cactus) a marine biome following the long coastline, yielding wealth of native microbial species. Fungi found in different parts Brazil are being studied for their enzymatic potential biotransformation organic synthesis processes. This review summarizes various studies on bioreduction activated C = double bonds catalyzed by ene-reductases using fungi (filamentous yeast)...