Communication
Green Chemistry
Table 2 Organosolv lignin conversion over Ni7Au3 and Ni catalystsa
structural properties of Ni catalysts, providing guiding principles
for future catalyst design for lignin valorization and beyond.
Acknowledgements
This work was financially supported by the Start-up Grant
from NUS, under WBS: R-279-000-368-133. XAS experiment
was performed at the beamline NW10a, Photon Factory
Advanced Ring (PF-AR), KEK, Tsukuba, Japan, under the
approval of the Photon Factory Advisory Committee (Proposal
No. 2012G601). P.Z. acknowledges NSERC Canada for support-
ing the XAFS analysis program.
Catalyst
T (°C)
t (h)
Yield (wt%)
Ni7Au3
Ni7Au3
Ni7Au3
Ni
130
170
170
170
170
170
1
1
12
1
1
1
0.5
1.4
3.2
0.5
0
1.0
3.8
9.3
1.6
0
0.3
0.6
1.7
0.1
0
b
—
NaClc
0
0
0
a Reaction conditions: 50 mg organosolv lignin, 3 mL freshly prepared
aqueous solution containing 0.022 mmol metal and 0.44 mmol PVP,
10 bar H2, reaction temperature and time can be found in the table.
b Control experiment without a metal catalyst but with 0.22 mmol
NaBH4 and 0.44 mmol PVP. c Control experiment without
a
Notes and references
metal catalyst but with 0.044 mmol NaCl, 0.22 mmol NaBH4 and
0.44 mmol PVP.
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