Johannes N., Danish physical chemist, 1879-1947. See: Brønsted acid, Brønsted base, Brønsted theory.
References in periodicals archive ?
The unique crystalline nature of composite catalysts plays role in isomerization reaction as mesoporous promotes faster diffusion of reactant/product molecule to active centers, better accessibility to guest molecules to Bronsted active sites and also assists in faster mass and heat transfer mechanisms.
Shwan [16] examined the effect of hydrothermal aging for Fe-BEA and proposed a model based on an evolution of active sites density--monomeric iron, dimeric iron, iron particles and Bronsted acid sites--after hydrothermal treatment.
Hydrocarbonate ions, produced during hydrolysis of carbamide, bond with Lewis and Bronsted active sites on surface of metals oxyhydroxides.
However, it is risky to use clay as compatibilizer because transesterification reaction between PC and PMMA chains can be catalyzed as this aluminosilicate can produce Lewis or Bronsted sites at high temperatures.
2] surface can be considered as Lewis and/or Bronsted acid/base reaction.
Therefore, protic ionic liquids (PIL) with comparatively cheap and easy stoichiometric combination of a Bronsted acid with a Bronsted base have gained much attention [7].
Green, one-pot, solvent-free synthesis of 1,2,4,5-Tetrasubstituted imidazoles using a bronsted acidic ionic liquid as novel and reusable catalyst, Synthetic Communications, 40: 2588-2591.
Si solo se emplea la esterificacion con acidos bronsted (sulfuricos y sulfonicos), a pesar de resultar altos rendimientos en esteres alquilicos, las reacciones son lentas, necesitando temperaturas mayores a 100[grados]C y mas de tres horas para completar la conversion (Deng et al.
Por lo tanto, la formacion preferente de cis-2-penteno en esta reaccion de deshidratacion del alcohol isoamilico es consistente con las reacciones de deshidratacion previamente reportadas para el butanol (tasa de conversion baja), en presencia de catalizadores con sitios acidos de Lewis y de Bronsted, Knozinger et al.
Conversely, the fluorinated polymers, bearing the MAA side-chains in their free-acid form, bound more strongly to marble via possible Bronsted acid-base interactions between carboxylic acid and calcium carbonate.
The most likely reaction pathway involves the attack of a proton associated with a BrOnsted acid site to the aromatic rings of PS, due to the reactivity of its side phenyl groups towards electrophilic reagents.