Full-text resources of PSJD and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl
Preferences help
Polish version English version Language
enabled [disable] Abstract
Number of results

Results found: 4

Number of results on page
first rewind previous Page / 1 next fast forward last

Search results

Search:
in the keywords:  mechanism
help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1
Content available remote

Meso-tetraphenylporphyriniron(iii) chloride catalyzed oxidation of aniline and its substituents by magnesium monoperoxyphthalate in aqueous acetic acid medium

100%
Manickam R., Kulandaivelu K.
Polish Journal of Chemical Technology
|
2012
|
vol. 14
|
issue 4
35-41
EN
The catalytic properties of the first generation catalyst meso-tetraphenylporphyriniron(III) chloride and magnesium monoperoxyphthalate (MMPP) as oxidant have been studied in the oxidation of aniline and its substituents in acetic acid medium. The thermodynamic parameters for the oxidation have been determined and discussed. It confirms the Exner relationship (only at the low range of temperatures) and also some of the activation parameters to the isokinetic relationships. The magnesium monoperoxyphthalate oxidation with 18 ortho- meta- and para-substituted anilines fulfills with isokinetic relationship but not to any of the linear free energy relationships. The reaction mechanism and the rate law were proposed.
2
Content available remote

Effect of temperature on ethanol conversion over the surface of Zr-modified zeolite ZSM-5

100%
Ivanovna K. R., Yurievich P. A.
Catalysis for Sustainable Energy
|
2014
|
vol. 2
|
issue 1
EN
In this paper, we have shown modification of high-silicon zeolite ZSM-5 by zirconium, and the results of ethanol conversion on this catalyst. Effect of process parameters on the selectivity of ethanol dehydration products was analyzed. In addition, a mechanism of aromatic hydrocarbons formation including reactions of dehydrogenation, dehydrocyclization and alkylation of intermediates was discussed. It was found that with increasing temperature a selectivity decreased for reactions of isomerization and increased selectivity for aromatic products and products of cracking reactions. The data also confirms that hexene-1 is an intermediate in the conversion process of ethanol and the catalyst system with 1% Zr-ZSM-5 has a bi-functionality. Catalytic properties of the system in the conversion of hydrocarbons are determined by the presence on their surface of both Broensted and Lewis acid sites.
3
Publication available in full text mode
Content available

Chemical Reduction of Gold(III) Bromide Complexes Using Sodium Nitrite – Kinetic Aspects

100%
Pacławski K., Pacławski K.
|
4
Publication available in full text mode
Content available

Methods of geometric parameters estimation for a mechanism based on point coordinates measurements

94%
Knapczyk J., Maniowski M., Knapczyk J., Maniowski M.
Archive of Mechanical Engineering
|
2009
|
vol. 56
|
issue 3
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.