Does the structure of CuZn hydroxycarbonate precursors affect the intrinsic hydrogenolysis activity of CuZn catalysts?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F20%3A43920344" target="_blank" >RIV/60461373:22320/20:43920344 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22350/20:43920344 RIV/61989100:27710/20:10245010

Výsledek na webu

<a href="https://doi.org/10.1039/d0cy00143k" target="_blank" >https://doi.org/10.1039/d0cy00143k</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d0cy00143k" target="_blank" >10.1039/d0cy00143k</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Does the structure of CuZn hydroxycarbonate precursors affect the intrinsic hydrogenolysis activity of CuZn catalysts?

Popis výsledku v původním jazyce

A comparative study of the properties and hydrogenolysis activity of catalysts derived from single-phase CuZn precursors was carried out to elucidate the effect of the precursor structure on the catalyst activity in hydrogenolysis and to examine their potential to replace the classical CuCr catalysts. Three CuZn catalysts were prepared by co-precipitation aiming at Cu/Zn ratios of 0.7, 5.0 and 1.6 to obtain single-phase aurichalcite, zincian malachite and a mixture of both phases, respectively. The catalyst precursors were calcined at temperatures of 300 and 450 °C, reducedin situand tested in dimethyl adipate hydrogenolysis. The properties of the precursors and catalysts were analyzed usingin situXRD, TGA-MS, TPR-H2, nitrogen physisorption and N2O chemisorption methods. According to the characterization data, aurichalcite-derived catalysts had superior structural properties to zincian malachite-derived catalysts: smaller copper crystallites, larger total and copper surface areas, and stable surface areas during the experiment. Consequently, aurichalcite-derived catalysts outperformed catalysts prepared from zincian malachite in the studied range of phase and elemental CuZn compositions. Nonetheless, the calculated intrinsic hydrogenolysis activity of surface Cu sites (TOF) was similar for all three catalysts. © The Royal Society of Chemistry 2020.

Název v anglickém jazyce

Does the structure of CuZn hydroxycarbonate precursors affect the intrinsic hydrogenolysis activity of CuZn catalysts?

Popis výsledku anglicky

A comparative study of the properties and hydrogenolysis activity of catalysts derived from single-phase CuZn precursors was carried out to elucidate the effect of the precursor structure on the catalyst activity in hydrogenolysis and to examine their potential to replace the classical CuCr catalysts. Three CuZn catalysts were prepared by co-precipitation aiming at Cu/Zn ratios of 0.7, 5.0 and 1.6 to obtain single-phase aurichalcite, zincian malachite and a mixture of both phases, respectively. The catalyst precursors were calcined at temperatures of 300 and 450 °C, reducedin situand tested in dimethyl adipate hydrogenolysis. The properties of the precursors and catalysts were analyzed usingin situXRD, TGA-MS, TPR-H2, nitrogen physisorption and N2O chemisorption methods. According to the characterization data, aurichalcite-derived catalysts had superior structural properties to zincian malachite-derived catalysts: smaller copper crystallites, larger total and copper surface areas, and stable surface areas during the experiment. Consequently, aurichalcite-derived catalysts outperformed catalysts prepared from zincian malachite in the studied range of phase and elemental CuZn compositions. Nonetheless, the calculated intrinsic hydrogenolysis activity of surface Cu sites (TOF) was similar for all three catalysts. © The Royal Society of Chemistry 2020.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Catalysis Science and Technology

ISSN

2044-4753

e-ISSN

—

Svazek periodika

10

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

3303-3314

Kód UT WoS článku

000538156300013

EID výsledku v databázi Scopus

2-s2.0-85085933541