Furfural
and
levulinic
acid
(LA)
are
valuable
platform
compounds
that
can
be
produced
by
catalyzed
conversion
of
xylose.
This
paper
reported
the
synthesis
characterization
a
heterogeneous
catalyst
consisting
HSiW/MCM-41
its
application
in
producing
furfural
LA.
The
was
prepared
impregnation
MCM-41
with
different
contents
HSiW
(20
wt%-50
wt%).
Among
various
these
catalysts,
40
wt%
superior
site
density
(Brønsted
59.35
μmol/g,
Lewis
33.69
μmol/g)
showed
excellent
catalytic
activity
as
it
exposed
most
acidic
sites
had
appropriate
porosity
surface
characteristics.
rate
xylose
high
99.01%,
maximum
yield
could
reach
56.75%,
LA
18.88%
HSiW/MCM-41.
study
provided
new
insights
into
development
efficient
sustainable
systems
for
biomass-derived
compounds.
Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
57(36), P. 13579 - 13587
Published: Sept. 1, 2023
The
traditional
hydrolysis–cooling–adsorption
process
for
coke
oven
gas
(COG)
desulfurization
urgently
needs
to
be
improved
because
of
its
complex
nature
and
high
energy
consumption.
One
promising
alternative
replacing
the
last
two
steps
is
selective
catalytic
oxidation.
However,
most
catalysts
used
in
oxidation
require
a
temperature
achieve
effective
desulfurization.
Herein,
robust
30Fe-MCM41
catalyst
developed
direct
at
medium
temperatures
after
hydrolysis.
This
exhibits
excellent
stability
over
300
h
breakthrough
sulfur
capacity
(2327.6
mgS
gcat–1).
Introducing
Ag
into
(30Fe5Ag-MCM41)
further
enhances
H2S
removal
efficiency
selectivity
120
°C.
Its
outstanding
performance
can
attributed
synergistic
effect
Fe–Ag
clusters.
During
oxidation,
Fe
serves
as
active
site
adsorption
dissociation,
while
functions
promoter,
increasing
dispersion,
reducing
catalyst,
improving
desorption
sulfur,
facilitating
reaction
between
oxygen
species
[HS].
provides
potential
route
enhancing
COG
