Synthesis and Catalytic Properties of Polymer-Immobilized Nanoparticles of Cobalt and Nickel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10402666" target="_blank" >RIV/00216208:11310/18:10402666 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Nepi7O8SxS" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Nepi7O8SxS</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1134/S2070050418040037" target="_blank" >10.1134/S2070050418040037</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Synthesis and Catalytic Properties of Polymer-Immobilized Nanoparticles of Cobalt and Nickel

Popis výsledku v původním jazyce

It is shown that copolymers of polyethylene- and polypropyleneglycolmaleates (p-EGM and p-PGM) with acrylic acid (AA) can be used as matrices for the preparation of effective metal-polymer complexes for hydrogenation of organic compounds. Electron microscope and dynamic scattering are used to determine the average nanoparticle size of 112 nm; the nanoparticles are spheres with a uniform distribution along the polymer&apos;s cross section. The contents of nickel and cobalt in p-EGM/AA are 0.52 and 0.48 wt %, respectively, and 0.49 and 0.51 wt % in p-PGM/AA, respectively. It is found that raising the temperature from 25 to 40 degrees C allows the rate of pyridine hydrogenation to be increased substantially as a result of catalyst activation and an increase in the number of catalyst active centers, due to the swelling of the polymer network and its transition from the tight globular to the expanded state. Raising the current&apos;s strength from 1 to 3 A lowers the yield of piperidine, which does not allow the increase in the current density to be used to shorten the length of synthesis. It may be concluded that the experimental data allow a final product of hydrogenation with higher rates and yields to be obtained.

Název v anglickém jazyce

Synthesis and Catalytic Properties of Polymer-Immobilized Nanoparticles of Cobalt and Nickel

Popis výsledku anglicky

It is shown that copolymers of polyethylene- and polypropyleneglycolmaleates (p-EGM and p-PGM) with acrylic acid (AA) can be used as matrices for the preparation of effective metal-polymer complexes for hydrogenation of organic compounds. Electron microscope and dynamic scattering are used to determine the average nanoparticle size of 112 nm; the nanoparticles are spheres with a uniform distribution along the polymer&apos;s cross section. The contents of nickel and cobalt in p-EGM/AA are 0.52 and 0.48 wt %, respectively, and 0.49 and 0.51 wt % in p-PGM/AA, respectively. It is found that raising the temperature from 25 to 40 degrees C allows the rate of pyridine hydrogenation to be increased substantially as a result of catalyst activation and an increase in the number of catalyst active centers, due to the swelling of the polymer network and its transition from the tight globular to the expanded state. Raising the current&apos;s strength from 1 to 3 A lowers the yield of piperidine, which does not allow the increase in the current density to be used to shorten the length of synthesis. It may be concluded that the experimental data allow a final product of hydrogenation with higher rates and yields to be obtained.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Catalysis in Industry

ISSN

2070-0504

e-ISSN

—

Svazek periodika

10

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

RU - Ruská federace

Počet stran výsledku

9

Strana od-do

270-278

Kód UT WoS článku

000455594600002

EID výsledku v databázi Scopus

2-s2.0-85060156179