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Title: Fe doped aluminoborate PKU-1 catalysts for the ketalization of glycerol to solketal: Unveiling the effects of iron composition and boron

Journal Article · · Chinese Chemical Letters
ORCiD logo [1];  [2];  [3];  [2]; ORCiD logo [2];  [2];  [4]; ORCiD logo [5];  [3];  [6]
  1. Chongqing Technology and Business University (China); OSTI
  2. Chongqing Technology and Business University (China)
  3. University of Connecticut, Storrs, CT (United States)
  4. Chongqing Technology and Business University (China); University of Electronic Science and Technology of China, Huzhou (China)
  5. Chongqing University (China)
  6. University of South Florida, Tampa, FL (United States)

An inexpensive Fe doped aluminoborate consisted of 18% Fe in PKU-1 material that exhibits high selectivity of 4-hydroxymethy-2,2-dimethyl-1,3-dioxolane (Solketal, 98.3%), considerable activity (TOF 51.7 h-1), and recyclable ability in the ketalization of glycerol to Solketal with acetone at 318 K has been developed. Here our study demonstrated that the structure of Fe (less agglomerated iron species vs. FeOx clusters) can be tuned by changing Fe loading in the PKU-1 material, which correlated well with experimental observations. Furthermore, the surface boron sites were promoted by iron loading and behaved as Lewis-acid sites to facilitate the reaction process of glycerol ketalization, while the Solketal selectivity was closely related with the structure of iron species in PKU-1, which was proved by kinetic studies, density function theory (DFT) calculations, and a series of spectroscopy studies. This investigation demonstrates that the surface B sites can play important roles in the reaction instead of being spectators.

Research Organization:
University of Connecticut, Storrs, CT (United States)
Sponsoring Organization:
Chongqing Municipal Education Commission; Chongqing Technology and Business University; USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB)
Grant/Contract Number:
FG02-86ER13622
OSTI ID:
1976914
Journal Information:
Chinese Chemical Letters, Journal Name: Chinese Chemical Letters Journal Issue: 3 Vol. 33; ISSN 1001-8417
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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