Humin Formation on SBA-15-pr-SO₃H Catalysts during the Alcoholysis of Furfuryl Alcohol to Ethyl Levulinate: Effect of Pore Size on Catalyst Stability, Transport, and Adsorption.

ABSTRACT: Herein, the alcoholysis of furfuryl alcohol in a series of SBA-15-pr-SO₃H catalysts with different pore sizes is reported. Elemental analysis and NMR relaxation/diffusion methods show that changes in pore size have a significant effect on catalyst activity and durability. In particular, the decrease in catalyst activity after catalyst reuse is mainly due to carbonaceous deposition, whereas leaching of sulfonic acid groups is not significant. This effect is more pronounced in the largest-pore-size catalyst C3, which rapidly deactivates after one reaction cycle, whereas catalysts with a relatively medium and small average pore size (named, respectively, C2 and C1) deactivate after two reaction cycles and to a lesser extent. CHNS elemental analysis showed that

SUBMITTER: Di Carmine G 

PROVIDER: S-EPMC10214382 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature