Results 11 to 20 of about 4,964,055 (321)
Indonesian Journal of Chemistry, 2022 Biodiesel is a renewable energy source that can be produced through esterification as well as transesterification reactions. This work presents a series of zirconia catalysts synthesized by hydrothermal method on various concentrations in acidic (H2SO4 0.
Sri Setyaningsih +5 more
doaj +1 more source
Synthesis of pure monetite by heterogeneous acid-base reaction
Revista Colombiana de Química, 2017 Five variations of the monetite (M) synthesis were evaluated modifying the stirring, the phosphoric acid addition rate, the homogeneity and the drying temperature. Products were assessed by means of XRD, FTIR, SEM-EDS analysis and chemical assay of Ca/P (
Luis Carlos Moreno Aldana +2 more
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Automated Exploration of Reaction Network and Mechanism via Meta-dynamics Nanoreactor [PDF]
, 2023 We developed an automated approach to construct the complex reaction network and explore the reaction mechanism for several reactant molecules. The nanoreactor type molecular dynamics was employed to generate possible chemical reactions, in which the meta-dynamics was taken to overcome reaction barriers and the semi-empirical GFN2-xTB method was used ...
arxiv +1 more source
ChemSusChem, 2016 The escalating atmospheric CO2 concentration is one of the most urgent environmental concerns of our age. To effectively capture CO2 , various materials have been studied.
Hao Li +5 more
semanticscholar +1 more source
Molecules, 2023 We herein report the acid/base-steered two distinct reaction pathways of 2-acylbenzoic acids with isatoic anhydrides. In the presence of Na2CO3, the cascade process consists of the cyclization of 2-acetylbenzoic acid and nucleophilic ring-opening ...
Ran Shi +6 more
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Propriedades relacionadas à acidez e basicidade a partir da abordagem em química computacional
Química Nova, 2014 Analytical Chemistry books lack a clear link between thermodynamic and equilibrium approaches involving acids and bases. In this work, theoretical calculations were performed to search for these relations.
Sérgio R. B. Silva +2 more
doaj +1 more source
Ultrasonic Assisted Synthesis, Characterization and Bioactivity Assessment of Novel Piperonal Based Schiff Base and Its Metal Complexes [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2020 A novel Schiff base was synthesized by the reaction of piperonal and anthranilic acid, which was further utilized in the synthesis of five novel complexes by reaction with different metal salts ultrasonically.
Obaid-Ur-Rahman Abid +6 more
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Química Nova, 2009 Pyrazinoic acid esters have been synthesized as prodrugs of pyrazinoic acid. In the literature, its preparation is reported through the reaction of pyrazinoyl chloride with alcohols and the reaction with DCC/DMAP.
João Paulo dos Santos Fernandes +1 more
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Chemical reaction planar fronts with a viscoelastic reaction product [PDF]
, 2021 A stress-affected chemical reaction front propagation is considered utilizing the concept of a chemical affinity tensor. A reaction between an elastic solid and diffusing constituents, localized at the reaction front, is considered. As a result of the reaction, the elastic constituent transforms into viscoelastic one.
arxiv +1 more source
Comparison of three methods for rendering plant fat transesterification
Research in Agricultural Engineering, 2013 Three most frequently used methods for fat transesterification were compared using rendering plant fat (RPF) as model. Acid-catalysed transesterification was found to be the most effective (conversion 90%) at optimum conditions (fat: methanol ratio 1:10,
A. Prošková +3 more
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