Sentence examples for catalyst modification from inspiring English sources

Catalyst modification using dopants has also been disclosed in other patents [19, 24, 55].

NH3-TPD analysis indicates that the support acidity decreases after catalyst modification with ZrO2.

Moreover a structural catalyst modification is pointed out to occur during the in situ stability tests.

The Fecralloy® and aluminium substrates reacted with the catalytic active components resulting in catalyst modification.

Hence, catalyst modification techniques such as partial deactivation of external surface acid sites, narrowing of pore channels, increasing diffusion path length (crystal size), etc., have been used to enhance p-DEB selectivity during ethylbenzene disproportionation.

The activity results obtained in this study are different from those reported previously [Appl. Catal. A 144 (1996) 343], suggesting that the extent of catalyst modification by fluorination is strongly dependent on the conditions of catalyst preparation.

The catalyst modifications occurring during reaction were followed by operando Raman GC methodology.

After the proposal of MTA was lifted, many efforts have been made to investigate the MTA process with respecting to both reaction conditions and catalyst modifications.

A direct link between the catalyst modifications and the reaction pathway was established by applying a simple reaction model to compare the rate constants of the intermediate processes.

Subsequent catalyst modifications have allowed for improvement in selectivity in the key step.

Effect of the process parameters and catalysts modification on the oxidative conversion of methane to C2-hydrocarbons and formaldehyde has been investigated in this paper.