Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 6, Issue 11, Pages 14704-14712Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b03268
Keywords
Sorbitol dehydration; Solid acid; Sulfated zirconia; biorefining; platform chemicals
Categories
Funding
- EPSRC
- UK Catalysis Hub [EP/K014749/1, EP/K014706/1]
- British Council through the Global Innovation Initiative under the GB3-Net project
- EPSRC [EP/K036548/1, EP/K014706/1, EP/J020184/2, EP/K036548/2, EP/K014749/1, EP/G007594/2] Funding Source: UKRI
Ask authors/readers for more resources
Isosorbide is a widely touted intermediate for the production of biorenewable polymers and plastics, accessible through the aqueous phase cascade conversion of D-sorbitol to isosorbide via 1,4-sorbitan. However, existing routes to isosorbide typically employ mineral acids under forcing conditions, and hence alternative heterogeneously catalyzed processes are highly desirable. Aqueous phase D-sorbitol conversion was therefore investigated over families of sulfated zirconia (SZ) solid acid catalysts, with the effect of employing monoclinic, tetragonal ZrO2, or Zr(OH)(4) as the parent support compared. The cascade proceeds via a stepwise dehydration to 1,4-sorbitan and subsequently isosorbide, with the latter favored over stronger acid sites. Monoclinic SZ exhibits superior activity to tetragonal SZ, reflecting a higher acid site density and pyrosulfate formation at lower SO42- loadings than over the other supports. Isosorbide selectivity at iso-conversion was proportional to acid site density, but independent of zirconia phase.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available