Hydrogen production from catalytic formic acid ecomposition over Zn based catalysts under room temperature
The depletion of petroleum sources and global warming issues has increased awareness among scientists to produce alternative energy other than the one that we always depend on, which is petroleum. Hydrogen (H2) energy is one of the alternatives that was promising as an efficient and green fuel. Me...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2019
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| Online Access: | http://journalarticle.ukm.my/14311/1/19.pdf http://journalarticle.ukm.my/14311/ http://www.ukm.my/jkukm/volume-311-2019/ |
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| Summary: | The depletion of petroleum sources and global warming issues has increased awareness among scientists to produce
alternative energy other than the one that we always depend on, which is petroleum. Hydrogen (H2) energy is one of the
alternatives that was promising as an efficient and green fuel. Meanwhile, formic acid has been detected as one of the
convenient H2 source/storage material. Here, we introduce two heterogeneous catalysts for H2 generation from formic acid.
Fe0.1 Zn0.9 and Fe0.5 Zn0.5 were synthesized by a modified microwave method. In this study, we report the result of a detailed
study undertaken to investigate the decomposition of formic acid to H2 and carbon dioxide (CO2) using gas chromatography
with thermal conductivity detector (GC-TCD). The catalyst used to decompose the formic acid was characterized by x-ray
diffraction (XRD) to determine their physicochemical properties. Field emission scanning electron microscopy (FESEM)
and transmission electron microscopy (TEM) were also used to determine the surface morphology and the structure of the
synthesized catalysts. The result suggested that in the dehydrogenation reaction, 90-96% of H2 was selectively produced
from the formic acid with the presence of FeZn catalyst. For Fe0.1Zn0.9 catalyst, FESEM micrograph shows the particle was
well dispersed, existing both away from and close proximity to 50-70 nm in size. Both heterogeneous catalysts are able to
produce H2 from formic acid at room temperatures (30°C) with no additives added and with high selectivity. |
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