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At this temperature, especially the condensation reaction of pyridine into quaternary nitrogen occurred in the semi-coke of Yaojie oil shale sample, while quaternary nitrogen represented the nitrogen atoms in the interior of precursors of the graphene layers.
The rate minimum for the hydrolysis and condensation reactions occurs at approximately pH 7 and pH 4, respectively.
The resulting formulation was then vacuum dried to constant weight to ensure the removal of any alcohol generated from the condensation reaction [10].
This proposed condensation reaction may improve the stability of wood against weathering effects.
Each atomic species involved in condensation reactions would have a preferred means of being coordinated with the surface, in a manner dependent on their atomic orbitals.
By catalytic condensation reaction of 4-chloro-3-nitro-2H-[1]-benzopyran-2-one (2) and substituted aminotriazoles 3(a-b) and 2-aminobenzothiazoles 3(c-e), 4-triazolylamino-3 -nitro-2H-[1]-benzopyran-2-ones 4(a-b) and 4-benzothiazolylamino-3-nitro-2H[1]-benzopyran-2-ones 4(c-e) are synthesized in good yield.
Further work is undergoing to investigate the effectiveness of this technique in other Knoevenagel Condensation Reactions.
Early studies involving condensation reactions of silicic acid, Si(OH)[.
Resins, dependent on condensation reactions for their formation, leave water inside the mold.
Various homogeneous and heterogeneous catalysts have been investigated in Knoevenagel condensation reactions, such as organo-bases, Lewis acids, heteropolyacids, molecular sieves functionalized with amino groups, metal organic framework based materials, and nitrogen-containing carbon [6-8].
Project development will focus on the overall process sustainability: (a) developing new environmentally friendly transformation protocols; (b) selective CO2 cycloaddition/alternate condensation reactions for the preparation of novel renewable-based cyclic and (poly)carbonates; (c) designing novel and simplified catalytic one-pot CO2 conversion protocols for non-functionalized renewable-based molecules; (d) preparing novel structural complex polycarbonates by alternate CO2 polycondensation reactions with renewable-based synthons blends.
4) Fine-tuning of material composition, kinetic of hydrolysis and condensation reactions, catalysts selection, and additives like corrosion inhibitors, plasticizers, and functional fillers was found to be determinant to achieve coatings, which featured long-lasting chemical inertness, and adequate mechanical response (i.