Chemistry is an experimental science, Product Details of 100-48-1, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 100-48-1, Name is Isonicotinonitrile, molecular formula is C6H4N2, belongs to pyridine-derivatives compound. In a document, author is Wang, Gang.
Cooperative catalytic effects between Bronsted and Lewis acid sites and kinetics for production of methyl methacrylate on SO42-/TiO2-SiO2
Either the ethylene or isobutene-based route for industrial production of methyl methacrylate (MMA) contains the esterification step between methacrylic acid (MAA) and methanol, therefore it is necessary to develop highly active and stable catalyst. Herein, series of superacid catalysts of SO42-/TiO2-SiO2 were prepared for esterification of MAA with methanol to produce MMA. The Bronsted and Lewis acid site den-sities and their ratios in SO42-/TiO2-SiO2 could be modulated by controlling the impregnated (NH4)(2)SO4 concentration, which were identified by pyridine titration and FT-IR. And no changes in structural skeleton and crystal phase of the SO42-/TiO2-SiO2 during the acid properties regulation process were noticed with FT-IR and XRD. The cooperative catalytic effects between Bronsted and Lewis acid sites were observed through catalytic evaluation. The kinetic studies indicated the catalytic pathway followed L H mechanism and the activation barrier of forward esterification (48 kJ/mol) was greater than that of reverse hydrolysis (40 kJ/mol) step. (c) 2020 Elsevier Ltd. All rights reserved.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 100-48-1, in my other articles. Product Details of 100-48-1.
Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem