Solid Base Bi 24 O 31 Br 10 (OH) δ with Active Lattice Oxygen for the Efficient Photo-Oxidation of Primary Alcohols to Aldehydes

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DOI

  • Yitao Dai, Synfuels China Technology Co.Ltd.
  • ,
  • Pengju Ren, Synfuels China Technology Co.Ltd.
  • ,
  • Yaru Li, Synfuels China Technology Co.Ltd.
  • ,
  • Dongdong Lv, Syngaschem BV
  • ,
  • Yanbin Shen, Synfuels China Technology Co.Ltd.
  • ,
  • Yongwang Li, Synfuels China Technology Co.Ltd., Institute of Coal Chemistry Chinese Academy of Sciences
  • ,
  • Hans Niemantsverdriet, Synfuels China Technology Co.Ltd., Syngaschem BV
  • ,
  • Flemming Besenbacher
  • Hongwei Xiang, Synfuels China Technology Co.Ltd., Institute of Coal Chemistry Chinese Academy of Sciences
  • ,
  • Weichang Hao, Beihang University
  • ,
  • Nina Lock
  • Xiaodong Wen, Synfuels China Technology Co.Ltd., Institute of Coal Chemistry Chinese Academy of Sciences
  • ,
  • James P. Lewis, Institute of Coal Chemistry Chinese Academy of Sciences, West Virginia University
  • ,
  • Ren Su

The selective oxidation of primary alcohols to aldehydes by O 2 instead of stoichiometric oxidants (for example, Mn VII , Cr VI , and Os IV ) is an important but challenging process. Most heterogeneous catalytic systems (thermal and photocatalysis) require noble metals or harsh reaction conditions. Here we show that the Bi 24 O 31 Br 10 (OH) δ photocatalyst is very efficient in the selective oxidation of a series of aliphatic (carbon chain from C 1 to C 10 ) and aromatic alcohols to their corresponding aldehydes/ketones under visible-light irradiation in air at room temperature, which would be challenging for conventional thermal and light-driven processes. High quantum efficiencies (71 % and 55 % under 410 and 450 nm irradiation) are reached in a representative reaction, the oxidation of isopropanol. We propose that the outstanding performance of the Bi 24 O 31 Br 10 (OH) δ photocatalyst is associated with basic surface sites and active lattice oxygen that boost the dehydrogenation step in the photo-oxidation of alcohols.

Original languageEnglish
JournalAngewandte Chemie
Volume131
Issue19
Pages (from-to)6265-6270
Number of pages6
ISSN0044-8249
DOIs
Publication statusPublished - May 2019

    Research areas

  • active lattice oxygen, photo-oxidation, primary alcohols, solid base, visible-light photocatalysis

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