Sentence examples for surface acid from inspiring English sources

The activation of catalyst during the reaction cycle due to the leaching of surface acid sites (the acidity of fresh catalyst was 0.815 mg n-butylamine/g and after 5th cycle was 0.423 mg n-butylamine/g) and the formation of humin in the active sites of the catalyst.

The addition of basic surface potassium oxide to Al2O3 possessing surface acid sites completely suppressed reactions from the surface acidic sites and formed a surface with only basic characteristics.

The ammonia thermodesorption results give clear evidence for the presence of surface acid sites of different strengths going from weak to strong acidities.

The amount and acid strength of surface acid sites of SPW increase as the loading increased.

Liquid phase transalkylation showed that catalytic activity of SPW is determined by amount and strength of surface acid sites.

Although the concentrations of all surface acid sites decrease upon the hydrothermal treatment, this effect is not uniform.

A qualitative correlation between surface acid-base characteristics and their catalytic properties has been established.

The role of the catalyst surface acid-base properties on the heterogeneously-catalyzed oxidation reaction mechanisms is discussed.

In addition, K doping changed the surface acid-basic properties of the catalyst, which instead favor the gasifcation and water-gas shift reactions.

It is considered that the strength of base and distance of the specific surface acid-base pairs over the catalysts are favored to bimolecular side-chain alkylation reaction.

In general, the reversible Ce3+/Ce4+ redox pair and the surface acid-base properties contribute to the superior intrinsic catalytic capability of CeO2, and hence yield enhanced catalytic phenomenon in many reactions.