Sentence examples for modification of catalyst from inspiring English sources

Modification of catalyst (HZSM-5) was carried out by impregnation of magnesium and boron producing Mg (5 % -HZSM-5 and B (4 % -HZSM-5.

Furthermore, the results showed that α,α-disubstituted aziridinemethanols with electron-withdrawing groups led to much higher enantioselectivity than those with electron-donating groups, which allowed the rational modification of catalyst structure to achieve optimal enantioselectivity.

Possible effects of these dopants such as zeolite dealumination, modification of catalyst acidity and the formation of mixed molybdenum containing phases or re-dispersion of the MoO3 phase can be advanced as potential explanations for the observed effects.

From the effects of time, temperature, H2/HC ratio and modification of catalysts, it was found that probability of chain growth on both sites were the same.

Modification of catalysts with metal oxides additives (Fe or Mg) was used as a tool for transforming and stabilizing gold species.

These results led us to conclude that the magnetic modification of catalysts through heat treatment have no practical contributions to the catalysis of MOR.

In general, there are three main trends in preparing catalysts using plasma technologies: (1) plasma chemical synthesis of ultrafine particle catalysts; (2) plasma assisted deposition of catalytically active compounds on various carriers, especially plasma spraying for the preparation of supported catalysts; (3) plasma enhanced preparation or plasma modification of catalysts.

Many efforts have been made to improve light olefins selectivity and lifetime of the catalysts by modification of H-ZSM-5 H-ZSM-5 H-ZSM-5

7,  8 Herein, we present a new way to improve the performance of Pt-based WGSR catalysts through surface modification of the catalyst with molten alkali salts.

The surface modification of Pt/C catalyst with Ag and the electrocatalytic oxidation of ethanol on the Ag modified Pt/C catalysts are investigated.

Vapor-grown carbon fibers (VGCFs) were added to the anode catalyst layer of a direct methanol fuel cell to improve the cell performance through structural modification of the catalyst layer.