E3S Web of Conferences,
Год журнала:
2024,
Номер
581, С. 01013 - 01013
Опубликована: Янв. 1, 2024
This
study
uses
biomass
to
produce
hydrogen
from
via
pyrolysis
meet
renewable
energy
demand
and
reduce
environmental
effect.
Pyrolysis
revealed
substantial
variations
in
cellulose,
hemicellulose,
lignin
content
samples.
was
tested
with
different
compositions,
Catalyst
D
converting
at
80%.
Biomass
4
produced
the
most
120
g/L.
sustainable,
1.8
kWh/kg
usage,
0.05
kg/kg
trash,
0.15
CO2
emissions,
according
an
impact
evaluation.
The
percentage
change
highlighted
D’s
significant
performance
sustainability
gains.
These
results
show
that
green
may
increase
biomass-to-hydrogen
production
efficiency
sustainability,
advancing
clean
technology
a
more
sustainable
future.
Hydrodeoxygenation
(HDO)
is
a
common
strategy
for
upgrading
lignin-derived
phenolic
compounds
into
high-quality
liquid
fuels,
and
the
support
rational
design
of
HDO
catalysts
critical
to
achieve
good
reaction
performance.
This
work
proposed
novel
Ru-based
catalyst
with
biochar
Al
RSC Sustainability,
Год журнала:
2023,
Номер
1(7), С. 1722 - 1736
Опубликована: Янв. 1, 2023
The
developments
in
enzymology
and
biocatalytic
processes
designed
as
per
the
rules
of
green
chemistry
engineering
are
keys
to
concepts
biorefinery
bioeconomy
which
turn
enable
sustainable
development.
Heliyon,
Год журнала:
2024,
Номер
10(5), С. e26690 - e26690
Опубликована: Фев. 23, 2024
One
of
the
most
promising
solutions
to
current
energy
crisis
is
an
efficient
catalytic
transformation
abundant
low-cost
renewable
raw
biomass
into
high-quality
biofuel.
Herein,
a
highly
effective
catalyst
was
constructed
systematically
for
selective
synthesis
2,5-dimethylfuran
(DMF)
biofuel
from
biomass-derived
5-hydroxymethylfurfural
(HMF)
via
green
transfer
hydrogenolysis
(CTH)
using
nitrogen-doped
ordered
mesoporous
carbon
(N-CMK-1)
decorated
ruthenium
(Ru)-based
in
i-propanol
as
hydrogen
source.
The
structures
and
properties
different
catalysts
were
characterized
by
characterization
techniques
such
FTIR,
XRD,
N2-sorption,
CO2-sorption,
TGA,
TEM,
ICP-AES,
CHNO
analysis,
acid-base
back
titration.
A
complete
HMF
conversion
with
high
DMF
yield
88%
achieved
under
optimized
reaction
conditions.
Regarding
substrate
product
yield,
influence
temperature,
time,
donors
thoroughly
investigated.
nitrogen-promoted
support
enhanced
dispersion
Ru
due
formation
appropriate
basic
site
density
which
could
efficiently
promote
activation
alcohol
hydroxyl
subsequent
release
active
species.
In
meantime,
dispersed
surface
nanoparticles
(NPs)
beneficial
both
carbonyl
groups
HMF.
Moreover,
Arrhenius
kinetic
analysis
studied
identifying
5-methyl
furfural
(5-MF)
2,5-bishydroxymethylfuran
(BHMF)
two
key
intermediates
that
dominate
distinct
pathway
during
CTH.
Furthermore,
stability
without
obvious
loss
activity
after
three
consecutive
cycles
observed
fabricated
N-CMK-1
Ru-based
result
superior
metal-support
interaction
framework
nature
catalyst.
These
findings
would
not
only
offer
robust
synthetic
approach
but
also
open
new
avenue
exploitation
specialty
chemicals
advanced
biofuels.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Ноя. 1, 2024
This
paper
presents
the
synthesis
and
application
of
a
novel
catalyst
for
carbon-carbon
bond
formations,
comprising
palladium
immobilized
on
2-(5-hydroxyquinolin-8-yl)-1H-benzo[d]imidazole-5-carboxylic
acid
modified
superparamagnetic
iron
oxide
nanoparticles
(Pd@HQBI-SPION).
The
involved
attachment
HQBI
ligands
to
SPION
using
APTES,
followed
by
immobilization
palladium.
Characterization
techniques,
including
FTIR,
TEM,
magnetic
measurements,
confirmed
successful
structural
integrity
Pd@HQBI-SPION.
catalytic
activity
Pd@HQBI-SPION
was
evaluated
in
various
formation
reactions,
demonstrating
high
efficiency
reusability.
8
different
derivatives
bearing
several
electron
withdrawing
donating
functionalities
were
used
as
starting
materials
products
obtained
isolated
yields
(75-97%).
exhibited
excellent
performance
one-pot
phenanthroline-dimedone
polycyclic
via
C-alkylation
intramolecular
O-alkylation
phenanthroline
with
dimedone.
are
is
described.
protocol
highly
selective
synthetic
method
construction
aromatic
compounds
containing
nitrogen
oxygen
atoms.
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Май 6, 2024
Abstract
This
paper
presents
the
synthesis
and
application
of
a
novel
catalyst
for
carbon-carbon
bond
formations,
comprising
palladium
immobilized
on
2-(5-hydroxyquinolin-8-yl)-1H-benzo[d]imidazole-5-carboxylic
acid
modified
superparamagnetic
iron
oxide
nanoparticles
(Pd@HQBI-SPION).
The
involved
attachment
HQBI
ligands
to
SPION
using
APTES,
followed
by
immobilization
palladium.
Characterization
techniques,
including
FTIR,
XRD,
TEM,
magnetic
measurements,
confirmed
successful
structural
integrity
Pd@HQBI-SPION.
catalytic
activity
Pd@HQBI-SPION
was
evaluated
in
various
formation
reactions,
demonstrating
high
efficiency
reusability.
exhibited
excellent
performance
one-pot
phenanthroline-dimedone
polycyclic
derivatives
via
C-alkylation
intramolecular
O-alkylation
phenanthroline
with
dimedone.
products
are
obtained
yields
is
described.
protocol
highly
selective
synthetic
method
construction
aromatic
compounds
containing
nitrogen
oxygen
atoms.
