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View article: Sn- and Mo-Modified Sulfonated Carbons: Properties and Evaluation as Catalysts for Fructose Conversion in Water and DMSO
Sn- and Mo-Modified Sulfonated Carbons: Properties and Evaluation as Catalysts for Fructose Conversion in Water and DMSO Open
Sulfonated carbon-based materials produced from residual glycerol from biodiesel were modified with metallic species (Sn and Mo) to modulate their acidic properties. The materials C, CSn3, CMo3, and CSn3Mo3 presented surface areas of 46.8,…
View article: From Waste to Catalyst: The Properties of Mixed Oxides Derived from Layered Double Hydroxide Mg/Al Synthesized from Aluminum Residues and Their Use in Transesterification
From Waste to Catalyst: The Properties of Mixed Oxides Derived from Layered Double Hydroxide Mg/Al Synthesized from Aluminum Residues and Their Use in Transesterification Open
Mixed oxides were obtained via calcination at 550 °C from layered double hydroxides (LDHs), which were synthesized in a previous study via co-precipitation and co-precipitation followed by hydrothermal treatment using aluminum residues as …
View article: Alkoxide‐Catalyzed Synthesis and Characterization of Acylglycerol‐Estolide Biolubricants From Neat Castor Oil
Alkoxide‐Catalyzed Synthesis and Characterization of Acylglycerol‐Estolide Biolubricants From Neat Castor Oil Open
Estolides are fatty acid oligomers that can be employed in the formulation of lubricants as an environmentally friendly alternative to mineral and synthetic oils. These bio‐based esters often exhibit improvements in essential lubricant pro…
View article: Potential of Nb2O5 as a Catalyst in Biodiesel Production: A Study with Different Feedstock
Potential of Nb2O5 as a Catalyst in Biodiesel Production: A Study with Different Feedstock Open
The objective of this study was to evaluate the catalytic performance of commercial Nb2O5, supplied by CBMM, in the production of biodiesel by transesterification and esterification, using different feedstocks (soybean, corn, sunflower, an…
View article: Esterification of Levulinic Acid with Different Alcohols Using Mesoporous Stannosilicates As the Catalyst
Esterification of Levulinic Acid with Different Alcohols Using Mesoporous Stannosilicates As the Catalyst Open
The mesoporous stannosilicates SnMCM-41-25 and SnMCM-41-80, synthesized, respectively, at 25 and 80 °C and exhibiting a well-ordered hexagonal structure, were applied for the first time as heterogeneous catalysts in the esterification of l…
View article: Doped Ruthenium/Hypercrosslinked Polystyrene (HPS) Catalysts in the Modification of Fatty Acid Methyl Esters
Doped Ruthenium/Hypercrosslinked Polystyrene (HPS) Catalysts in the Modification of Fatty Acid Methyl Esters Open
The modification of fatty substrates using heterogeneous catalysts have extensive industrial application and has an emphatic position in a sustainable context. Herein ruthenium, nickel, cobalt and copper-doped ruthenium, supported on hyper…
View article: Influence of Synthesis Methodology on the Properties and Catalytic Performance of Tin, Niobium, and Tin-Niobium Oxides in Fructose Conversion
Influence of Synthesis Methodology on the Properties and Catalytic Performance of Tin, Niobium, and Tin-Niobium Oxides in Fructose Conversion Open
Pure and mixed oxides were synthesized using three methods, namely, coprecipitation, hydrothermal treatment using CTAB and Pechini treatment using glycerol, and investigated for the transformation of fructose, aiming to determine the influ…
View article: Development of a Fast Gc-Response Factor Method to Quantify Total Fames in Biodiesel from Various Fatty Acid Sources
Development of a Fast Gc-Response Factor Method to Quantify Total Fames in Biodiesel from Various Fatty Acid Sources Open
View article: Estolide Production from Neat Castor Via Simultaneous Chemical Trans- and Interesterification Reactions
Estolide Production from Neat Castor Via Simultaneous Chemical Trans- and Interesterification Reactions Open
View article: Investigation of CeO2, MoO3, and Ce2(MoO4)3, Synthesized by the Pechini Method, as Catalysts for Fructose Conversion
Investigation of CeO2, MoO3, and Ce2(MoO4)3, Synthesized by the Pechini Method, as Catalysts for Fructose Conversion Open
Cerium oxide (Ce100), molybdenum oxide (Mo100), and a material containing Ce and Mo (CeMo) were synthesized by the Pechini method, using glycerol as a polyol. These materials were applied for fructose conversion in an aqueous medium. The c…
View article: Optimization of biodiesel production via transesterification of soybean oil using α-MoO3 catalyst obtained by the combustion method
Optimization of biodiesel production via transesterification of soybean oil using α-MoO3 catalyst obtained by the combustion method Open
A catalyst based on MoO3 was synthesized by a simple and fast pilot-scale combustion reaction method and applied to the conversion of soybean oil to biodiesel via transesterification. For that, the statistical analysis of the catalyst amou…
View article: Interaction of Lead and Calcium with Biochar Produced from Cassava Waste: Perspectives for Agricultural and Environmental Application
Interaction of Lead and Calcium with Biochar Produced from Cassava Waste: Perspectives for Agricultural and Environmental Application Open
Biochar from slow pyrolysis under controlled conditions is favorable in the transformation of waste into materials that serve as soil conditioners, and/or environmental remediation. Thus, this work aimed to produce and characterize biochar…
View article: Catalisadores do Tipo Estanossilicatos Mesoporosos: Uma Breve Revisão
Catalisadores do Tipo Estanossilicatos Mesoporosos: Uma Breve Revisão Open
The incorporation of tin in the structure of mesoporous silicas has been the focus of many studies, mainly for its application as heterogeneous catalysts, due to the acidity given to the system.Thus, promising catalytic activities and sele…
View article: Optimization of Biodiesel Production Via Transesterification of Soybean Oil Using Α-Moo3 Catalyst Obtained by the Combustion Method
Optimization of Biodiesel Production Via Transesterification of Soybean Oil Using Α-Moo3 Catalyst Obtained by the Combustion Method Open
View article: Contributions of Catalysis in the Search for Sustainability
Contributions of Catalysis in the Search for Sustainability Open
The strategic role played by the Catalysis to achieve a sustainable development is crucial and is reflected by the fact that it is involved, directly or indirectly, in at least nine of the seventeen sustainable development goals (SDGs) of …
View article: Interaction of Lead and Calcium with Biochar Produced from Cassava Waste: Perspectives for Agricultural and Environmental Application
Interaction of Lead and Calcium with Biochar Produced from Cassava Waste: Perspectives for Agricultural and Environmental Application Open
The biochar from slow pyrolysis under controlled conditions is favorable in the transformation of waste into materials that serve as soil conditioners, and/or environmental remediation. Thus, this work aimed to produce and characterize bio…
View article: Benzodiazepines: Drugs with Chemical Skeletons Suitable for the Preparation of Metallacycles with Potential Pharmacological Activity
Benzodiazepines: Drugs with Chemical Skeletons Suitable for the Preparation of Metallacycles with Potential Pharmacological Activity Open
The synthesis of organometallic compounds with potential pharmacological activity has attracted the attention of many research groups, aiming to take advantage of aspects that the presence of the metal-carbon bond can bring to the design o…
View article: Comparação entre a sacarificação enzimática e química da hidrólise de biomassa para a produção de bioetanol: uma breve revisão.
Comparação entre a sacarificação enzimática e química da hidrólise de biomassa para a produção de bioetanol: uma breve revisão. Open
A dependencia do petroleo e de demais recursos fosseis levanta preocupacoes e questionamentos globais, por nao serem considerados sustentaveis no ponto de vista economico e ambiental. A demasiada disponibilidade de material residual agrico…
View article: Aplicação de óxidos de metais como catalisadores heterogêneos na isomerização da glicose em meio aquoso
Aplicação de óxidos de metais como catalisadores heterogêneos na isomerização da glicose em meio aquoso Open
RESUMO: Atualmente, o uso de fontes renováveis e sustentáveis para produzir energia e produtos químicos associados ao desenvolvimento de catalisadores heterogêneos é uma estratégia promissora, pois esses possuem a vantagem de serem recuper…
View article: Sn Species as a Potential Catalyst in Fructose Conversion in Molecules of Industrial Interest
Sn Species as a Potential Catalyst in Fructose Conversion in Molecules of Industrial Interest Open
In Brazil and worldwide, there are several challenges for strengthening and expanding the use of renewable sources to obtain chemical and energy inputs, with the objective of consolidating a sustainable industrial segment.In this context, …
View article: Gold Nanorods Capped with Different Ammonium Bromide Salts on the Catalytic Chemical Reduction of p-Nitrophenol
Gold Nanorods Capped with Different Ammonium Bromide Salts on the Catalytic Chemical Reduction of p-Nitrophenol Open
It is known that the reactivity of the nanocatalytic systems is related to the particle size and shape and also to the features of the capping agents on the nanostructures. In this study, gold nanorods (AuNRs) were synthesized by the seed-…
View article: Synthesis of MoO <sub>3</sub> by Pilot Scale Combustion Reaction: Evaluation in Biodiesel Production from Residual Oil
Synthesis of MoO <sub>3</sub> by Pilot Scale Combustion Reaction: Evaluation in Biodiesel Production from Residual Oil Open
View article: Comparison Between Chemical and Enzymatic Hydrolysis of Lignocellulosic Biomass for Bioethanol Production: a Review
Comparison Between Chemical and Enzymatic Hydrolysis of Lignocellulosic Biomass for Bioethanol Production: a Review Open
The dependence on oil and other fossil resources raises global concerns and questions, as they are not considered sustainable from an economic and environmental point of view.The excess availability of residual agricultural material, the g…
View article: From Disposal to Reuse: Production of Sustainable Fatty Acid Alkyl Esters Derived from Residual Oil Using a Biphasic Magnetic Catalyst
From Disposal to Reuse: Production of Sustainable Fatty Acid Alkyl Esters Derived from Residual Oil Using a Biphasic Magnetic Catalyst Open
The development of technologies to promote residual oil reuse has been encouraged, aiming to reduce the environmental impact and promote sustainability. In this study, a biphasic magnetic catalyst with composition equal to ZnO-Ni0.5Zn0.5Fe…
View article: Methods for the Determination of Triacylglycerols Composition: A Review of the Past Decade
Methods for the Determination of Triacylglycerols Composition: A Review of the Past Decade Open
Over the last years (2008-2019), the most employed and innovative techniques for the analysis of triacylglycerol composition are presented and discussed in this article.Determining the composition of these molecules is of great importance …
View article: Prospecção Tecnológica de Catalisadores Empregados em Reações de Transesterificação e Esterificação
Prospecção Tecnológica de Catalisadores Empregados em Reações de Transesterificação e Esterificação Open
O desenvolvimento de novos materiais é crescente ao longo das décadas, tendo como destaque os catalisadores, os quais exercem papel importante nos processos industriais atuando em reações como de transesterificação e esterificação na produ…
View article: IMPROVEMENT OF AN ANALYTICAL METHOD BASED ON HPLC WITH REFRACTIVE INDEX DETECTION FOR THE ANALYSIS OF GLYCEROL OXIDATION PRODUCTS
IMPROVEMENT OF AN ANALYTICAL METHOD BASED ON HPLC WITH REFRACTIVE INDEX DETECTION FOR THE ANALYSIS OF GLYCEROL OXIDATION PRODUCTS Open
The optimized analytical methodology described herein is based on an ion exchange column and an H3PO4 solution (pH 2.24) as the mobile phase, with a flow rate of 0.4 mL min-1 and refractive index detection (RID). On applying the methodolog…
View article: IMPROVEMENT OF AN ANALYTICAL METHOD BASED ON HPLC WITH REFRACTIVE INDEX DETECTION FOR THE ANALYSIS OF GLYCEROL OXIDATION PRODUCTS
IMPROVEMENT OF AN ANALYTICAL METHOD BASED ON HPLC WITH REFRACTIVE INDEX DETECTION FOR THE ANALYSIS OF GLYCEROL OXIDATION PRODUCTS Open
The optimized analytical methodology described herein is based on an ion exchange column and an H3PO4 solution (pH 2.24) as the mobile phase, with a flow rate of 0.4 mL min-1 and refractive index detection (RID). On applying the methodolog…
View article: Different Strategies to Anchor Organotin Methoxides on Silica and Their (Re)Use as Heterogeneous Catalysts for Transesterification Reactions
Different Strategies to Anchor Organotin Methoxides on Silica and Their (Re)Use as Heterogeneous Catalysts for Transesterification Reactions Open
Catalysts were prepared by the heterogenization of the tributyltin(IV) methoxide (n-Bu3Sn(OMe)) and dibutyltin(IV) dimethoxide (n-Bu2Sn(OMe)2) on silica by two strategies: (i) anchoring of the organotin(IV) compounds on silica and (ii) anc…
View article: Different Strategies to Anchor Organotin Methoxides on Silica and Their (Re)Use as Heterogeneous Catalysts for Transesterification Reactions
Different Strategies to Anchor Organotin Methoxides on Silica and Their (Re)Use as Heterogeneous Catalysts for Transesterification Reactions Open
Catalysts were prepared by the heterogenization of the tributyltin(IV) methoxide (n-Bu3Sn(OMe)) and dibutyltin(IV) dimethoxide (n-Bu2Sn(OMe)2) on silica by two strategies: (i) anchoring of the organotin(IV) compounds on silica and (ii) anc…