Sentence examples for variation of catalyst from inspiring English sources

Open image in new window Fig. 4 The biodiesel yield obtained from different experiments at the variation of catalyst loading and type of catalyst.

Based on the online sampling study, axial variation of catalyst activity along the riser reactor was obtained, which indicated that the activity of catalyst rapidly decreased to 40 50 % of the initial level in the feeding zone.

The variation of catalyst activity and selectivity with time on stream and temperature is illustrated while the possible role of thermodynamic limitations is addressed.

The special variation of catalyst loading is considered in two direction, "across the layer" from membrane/CL interface to gas diffusion layer (GDL) and "in catalyst plane" under the channels and land areas in the channel direction.

Both variation of catalyst calcination temperature between 473 and 773 K and promotion with 0.1 wt% of Pt had no significant affect on the size of supported Co3O4 crystallites.

For the selective oxidation of isoprene in a microchannel reactor mass transfer limitations are experimentally excluded by the variation of catalyst particle diameter and the change of the inert gas nitrogen to helium.

The effects of active components, promoters and reforming reaction on structure variation of catalysts for carbon dioxide reforming with methane are extensively investigated.

In the past two decades, the development of density functional theory (DFT) and surface kinetics make it feasible to theoretically evaluate and predict the catalytic activity variation of catalysts within a descriptor-based framework.

Further variation of catalysts 1 by introducing different esters on the aryl group of the ureas showed that para-substitution leads to a slightly reduced selectivity (Table 1, entries 37 and 38).

The variation of the catalyst structure along the catalyst bed was determined by X-ray absorption spectroscopy.

The effect of the silicon ortho- to pyrophosphate ratio on the final catalyst was investigated by variation of key catalyst preparation parameters, namely: H3PO4 concentration, impregnation and calcination temperature and water addition.