Synthesis of lactide from L-Lactic acid over iso-reticular zeolites derived from Al-UTL

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F23%3A10470973" target="_blank" >RIV/00216208:11310/23:10470973 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=XXz86wOJem" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=XXz86wOJem</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apcata.2023.119379" target="_blank" >10.1016/j.apcata.2023.119379</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Synthesis of lactide from L-Lactic acid over iso-reticular zeolites derived from Al-UTL

Popis výsledku v původním jazyce

Controlling the reaction selectivity by use of rationally designed catalysts provides high yields of desired products rendering the process more efficient and sustainable. In this study, we investigated a series of isoreticular zeolites (Al-IPC-n, n 1/4 2, 4, 6, and 7), in the synthesis of lactide from L-Lactic acid as an intermediate for the polylactic acid production. Catalytic tests allowed a thorough understanding of the structure-acidity activity relationship and the control of the shape selectivity. The lactide and the dimers of the lactic acid were obtained in one step with a high selectivity (&gt;55% for lactide and &gt;70% for the dimer of the lactic). The selectivity to L,L-lactide was comparable with that on more acidic commercial BEA. A balance between the acidity and the pore size afforded high yields of the dimer, avoiding the poisoning of the catalyst and the production of the larger oligomers.

Název v anglickém jazyce

Synthesis of lactide from L-Lactic acid over iso-reticular zeolites derived from Al-UTL

Popis výsledku anglicky

Controlling the reaction selectivity by use of rationally designed catalysts provides high yields of desired products rendering the process more efficient and sustainable. In this study, we investigated a series of isoreticular zeolites (Al-IPC-n, n 1/4 2, 4, 6, and 7), in the synthesis of lactide from L-Lactic acid as an intermediate for the polylactic acid production. Catalytic tests allowed a thorough understanding of the structure-acidity activity relationship and the control of the shape selectivity. The lactide and the dimers of the lactic acid were obtained in one step with a high selectivity (&gt;55% for lactide and &gt;70% for the dimer of the lactic). The selectivity to L,L-lactide was comparable with that on more acidic commercial BEA. A balance between the acidity and the pore size afforded high yields of the dimer, avoiding the poisoning of the catalyst and the production of the larger oligomers.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GX19-27551X" target="_blank" >GX19-27551X: ADORable katalyzátory</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Applied Catalysis A: General

ISSN

0926-860X

e-ISSN

1873-3875

Svazek periodika

665

Číslo periodika v rámci svazku

September

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

119379

Kód UT WoS článku

001069386300001

EID výsledku v databázi Scopus

2-s2.0-85168501421