Publisher: Wiley

Issue: 12

License: [{"start"=>{"date-parts"=>[[2023, 10, 24]], "date-time"=>"2023-10-24T00:00:00Z", "timestamp"=>1698105600000}, "content-version"=>"vor", "delay-in-days"=>0, "URL"=>"http://creativecommons.org/licenses/by/4.0/"}]

Publication date(s): 2023/12/24 (online)

Pages:

Volume: 88 Issue: 12

Journal: ChemPlusChem

Link: https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cplu.202300413

URL: http://dx.doi.org/10.1002/cplu.202300413

Abstract5‐hydroxymethylfurfural represents a key chemical in the drive towards a sustainable circular economy within the chemical industry. The final step in 5‐hydroxymethylfurfural production is the acid catalysed dehydration of fructose, for which supported organoacids are excellent potential catalyst candidates. Here we report a range of solid acid catalysis based on sulphonic acid grafted onto different porous silica nanosphere architectures, as confirmed by TEM, N2 porosimetry, XPS and ATR‐IR. All four catalysts display enhanced active site normalised activity and productivity, relative to alternative silica supported equivalent systems in the literature, with in‐pore diffusion of both substrate and product key to both performance and humin formation pathway. An increase in‐pore diffusion coefficient of 5‐hydroxymethylfurfural within wormlike and stellate structures results in optimal productivity. In contrast, poor diffusion within a raspberry‐like morphology decreases rates of 5‐hydroxymethylfurfural production and increases its consumption within humin formation.