On the Effect of the M3+ Origin on the Properties and Aldol Condensation Performance of MgM3+ Hydrotalcites and Mixed Oxides

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F21%3A39918025" target="_blank" >RIV/00216275:25310/21:39918025 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22310/21:43922259 RIV/60461373:22320/21:43922259 RIV/60461373:22350/21:43922259

Result on the web

<a href="https://www.mdpi.com/2073-4344/11/8/992" target="_blank" >https://www.mdpi.com/2073-4344/11/8/992</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/catal11080992" target="_blank" >10.3390/catal11080992</a>

Result language

angličtina

Original language name

On the Effect of the M3+ Origin on the Properties and Aldol Condensation Performance of MgM3+ Hydrotalcites and Mixed Oxides

Original language description

&quot;Hydrotalcites (HTCs) are promising solid base catalysts to produce advanced biofuels by aldol condensation. Their main potential lies in the tunability of their acid-base properties by varying their composition. However, the relationship between the composition of hydrotalcites, their basicity, and their catalytic performance has not yet been fully revealed. Here, we investigate systematically the preparation of HTCs with the general formula of Mg6M23+(OH)(16)CO3 center dot 4H(2)O, where M3+ stands for Al, Ga, Fe, and In, while keeping the Mg/M3+ equal to 3. We use an array of analytical methods including XRD, N-2 physisorption, CO2-TPD, TGA-MS, FTIR-ATR, and SEM to assess changes in the properties and concluded that the nature of M3+ affected the HTC crystallinity. We show that the basicity of the HTC-derived mixed oxides decreased with the increase in atomic weight of M3+, which was reflected by decreased furfural conversion in its aldol condensation with acetone. We demonstrate that all MgM3+ mixed oxides can be fully rehydrated, which boosted their activity in aldol condensation. Taking all characterization results together, we conclude that the catalytic performance of the rehydrated HTCs is determined by the &quot;&quot;host&quot;&quot; MgO component, rather than the nature of M3+.&quot;

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10403 - Physical chemistry

Project

<a href="/en/project/GA19-22978S" target="_blank" >GA19-22978S: Quantifying the basicity of reconstructed layered double hydroxides and correlating this with their performance in base-catalysed reactions</a><br>

Continuities

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

Publication year

2021

Confidentiality

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

Name of the periodical

Catalysts

ISSN

2073-4344

e-ISSN

—

Volume of the periodical

11

Issue of the periodical within the volume

8

Country of publishing house

CH - SWITZERLAND

Number of pages

16

Pages from-to

"992-1"-"992-16"

UT code for WoS article

000688926300001

EID of the result in the Scopus database

2-s2.0-85113188227