Exemplos de uso de Activity and selectivity em Inglês e suas traduções para o Português
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The pdo/m-zro2 catalyst has shown high activity and selectivity for acetic acid in this reaction.
The Tonsil APT series has multiple products for each process to meet the different requirements in terms of activity and selectivity.
After the catalytic tests the catalytic activity and selectivity were determined by high precision liquid chromatography.
Different supported ormixed oxides have been developed in order to increase the activity and selectivity to olefins.
In this work, we investigated the activity and selectivity of copper catalysts supported on zirconium oxide, obtained by differentpreparation methods, in the ethanol dehydrogenation reaction.
Improved design will allow nanozymes to compete with natural enzymes in terms of catalytic activity and selectivity.
The catalytic activity and selectivity evaluation reactions were performed in fixed bed tubular reactor at 573 k, 583 and 593 k, under 40 bar pressure in trickle bed flow regime.
The nature of the support can influence the size distribution of silver particles, hence, on activity and selectivity to ethylene oxide.
The development of new catalysts with bigger activity and selectivity has been the main focus of the chemical industry, as well as the academy, to evaluate environmental and economic concerns.
As described in the first report submitted to FAPESP,we observed that the catalyst activity and selectivity is strongly affected by the preparation method.
During the trip up the riser,the cracking catalyst is"spent" by reactions which deposit coke on the catalyst and greatly reduce activity and selectivity.
It is a high performance catalyst that has high stress resistance and reliably delivers the required activity and selectivity over a long period of time, even when small quantities are used.
In this work, the activity and selectivity of bimetallic materials composed by ruthenium and niobium, added on carbon matrix printex 6l, for electrogeneration of hydrogen peroxide from oxygen reduction reaction.
The four catalysts have been tested for hydrogenation of levulinic and showed high activity and selectivity to gamma-valerolactone, more than 90%.
The homogeneous catalysts displayed activity and selectivity in propene oligomerization; the highest activity was attained by c1 with al/ni ratio 200(32,3¿103 h¿1), and the highest selectivity for c6 was attained by c3 with al/ni ratio 200 91.
Phytochemical studies showed that copaiba oils obtained from threes of copaifera genus present several terpenes that show high activity and selectivity against trypanosoma cruzi.
For ni/ceo2 catalysts,the results showed that the morphology of the support did not influence the activity and selectivity of the products obtained in the steam reforming of ethanol held to 573 k. however, the catalysts showed differences as the amount of carbon formed on the catalyst surface.
In the present work, alternative catalysts based on copper and nickel were evaluated in the no reduction by co, in order, to evaluate the activity and selectivity toward n2.
It was observed that the choice of synthesis method affects the activity and selectivity of the co2 hydrogenation, in the studied conditions. among the catalysts with metal content 1:1(cu: zn), the one prepared by impregnation of the metals over al2o3 support was the most active and selective to dimethyl ether.
The main objective of this work was to study the effect of incorporation of different carbon contents to a alumina on the activity and selectivity of mos2-based catalysts in the thiophene hds model reaction.
This paper reported the synthesizes by hydrothermal method, and characterization of mesoporous heterogeneous catalysts, the sba-15 type with addition of metals cerium and aluminum,evaluating their activity and selectivity in the thermal degradation of heavy oil.
The catalysts were characterized by powder x-ray diffraction and transmission electron microscopy, among other techniques.the experimental data presented high catalytic activity and selectivity in hydrogenation of some molecules, like styrene to ethylbenzene(yields greater than 99%) and 1,5- cyclooctadiene to cyclooctene yields greater than 83.
The usually catalysts are materials based on noble metals that have the drawback of high cost and also loss of activity and selectivity due to poisoning with residual carbon monoxide.
The resulting material is a combination of organic and inorganic materials,which confers to them potentiated properties as good catalytic activity and selectivity, as well as uniform high porosity, ordered structure and structural flexibility.
In our times, the chemical catalysis of the hydrolysis reaction, solubilization and degradation of cellulose,the base metal has attracted great interest due to the large potential in terms of activity and selectivity, or the possibility of developing products and/ or chemical processes that are associated with the use of clean technologies.
Hdt catalysts with similar structural and textural features have showed distinct catalytic activities and selectivities.
The 3.4-diidroisocoumarin(1.57) was the most active compound of the series, exhibiting a potent antiproliferative activity and high selectivity against breast cancer cells mcf-7, gi50=0,66¿g ml-1.