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Encapsulation of compounds biphenyls into SBA-15: synthesis of composites for application
(2018-02)
In the present work two novel hybrid mesoporous material BVA-SBA and BEG-SBA were designed and synthesized by a process assisted by microwave. The nanoparticles were studied by UV-vis and fluorescence spectroscopy, elemental ...
Design and synthesis of the new bis-vainilline derivatives containing hydralazine and isoniazide moieties for the detection of trivalent metal cations
(2016-11)
In the present work the design and synthesis of new chemosensors for the determination of metal cations
represent an area of hight interest in supramolecular chemistry. The detection and cuantification is important in ...
Microwave-assisted embedding of bis-vanillin and bis-eugenol into SBA-15: Synthesis of chemosensors precursors for the detection of metal cations.
(2017)
In this work we evaluate the necessary experimental conditions to carry out the embedding of bis-vanillin and bis-eugenol, two potential precursors of chemosensors, in the porous structure of the mesoporous silica SBA-15 ...
Byphenyl Hydrazone SiO2 Composite: Synthesis and Evaluation of a New Chemosensor System for the Detection of Cu2+
(2018)
In the present work a byphenyl hydrazone/SiO2 composite was synthetized by a simple procedure. First, the mesoporous SiO2 and the byphenyl hydrazone ligand were prepared. To prepare the composite, the mesoporous silica and ...
Introducing organic chemistry students to the extraction of natural products found in vegetal species
(2017)
This work constitutes a new strategy for teaching-learning the chemistry of natural products, being the students active participants in the process. Results showed in this activity contributed not only to the understanding ...
Teaching of chemistry applied. Development of a laboratory-scale fire started
(2018)
The present laboratory work based in the preparation of fire started is proposed as an alternative in the teaching of chemistry for students of high school, with the purpose of articulate and integrate the abilities of ...
Synthesis and encapsulation of bis-eugenol in a mesoporous solid material: Enhancement of the antioxidant activity of a natural compound from Clove Oil.
(2018)
In the present work, microwave extraction conditions to recover high eugenol content in the crude extract from clove were investigated. The effect of factors like temperature, stirring, time, liquid: Solid ratio and solutions ...
Mesoporous materials as supports of active molecules: a versatile strategy of functionalization of inorganic oxides
(2019)
Ordered mesoporous silica and alumina were functionalized with vanillin, eugenol and their bis-compounds through a microwave assisted process. The physicochemical charac-terization of these materials confirmed the successful ...
Antioxidant activity of natural compounds supported on mesoporous Silica
(2019)
The preparation of new composites and their antioxidant properties are
reported in this study. Eugenol, vanillin and cinnamaldehyde were supported on silica material, through a microwave assisted process. N2
adsorption ...
Preparation of gel alcohol flavored with essential oils. An employ of laboratory techniques in the organic chemistry study
(2017)
The main aim of this work is to teach chemistry through a practical application. In it is described a chemical experiment for high school students. They learn fundamental concepts through the preparation of gel
alcohol ...