Synthesis of catalytic materials based on system Ni/alfa-Al2O3 suported on monolith ceramic foams
Authors
Nikolić, VesnaKamberović, Željko
Anđić, Zoran
Korać, Marija
Sokić, Miroslav
Stojanović, Jovica
Conference object (Published version)
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In the present investigation, nanostructured Ni/Al2O3 catalyst supported on
reticulated alumina-mullite foam was synthesized by aerosol assisted coating. The
synthesis process was optimized from the technological and economic aspect.
Ultrasonically generated NiCl2 water solutions were applied to α-Al2O3-mullite foam
in a tubular quartz reactor. The first procedure involved calcination at 773 K for 1 h
in order to obtain NiO/Al2O3 precursor. The second procedure involved drying at
473 K for 1 h without oxidation. The activation step involved hydrogen reduction at
633 K. The effectiveness of the low-temperature hydrogen reduction was
compared for those systems. It was determined that the samples were reduced in
a high degree at 633 K for 90 minutes and the hydrogen flow rate of 20L/h.
However, SEM of calcined sample shows presence of agglomerates. The samples
reduced from NiCl2 had no agglomerates and the metallic phase was
homogeneously dispersed compared to the samples obta...ined by NiO reduction.
The most probable reason for the effective low-temperature reduction was the
formation of thin coatings consisted of oxide and chloride precursors for the
catalytically active components. XRD analyse of the samples after the reduction at
633 K for 90 minutes showed only metallic nickel, alumina and mullite phases.
Residual phases of NiO and NiCl2, as well as NiAl2O4, were not detected. The
production process can be simplified and economically more favourable by
avoiding the calcination step.
Keywords:
Nickel / Alumina / Reticulated foam / Catalyst / Aerosol assisted coatingSource:
Proceedings: First Metallurgical & Materials Engineering Congress of South-East Europe (MME SEE 2013), 2013, 414-420Publisher:
- Association of Metallurgical Engineers of Serbia (AMES)
- University of Belgrade – Faculty of Technology and Metallurgy Belgrade (TMF)
Funding / projects:
- Innovative synergy of by-products, waste minimization and clean technologies in metallurgy (RS-MESTD-Technological Development (TD or TR)-34033)
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Institution/Community
Inovacioni centar / Innovation CentreTY - CONF AU - Nikolić, Vesna AU - Kamberović, Željko AU - Anđić, Zoran AU - Korać, Marija AU - Sokić, Miroslav AU - Stojanović, Jovica PY - 2013 UR - http://cherry.chem.bg.ac.rs/handle/123456789/5160 AB - In the present investigation, nanostructured Ni/Al2O3 catalyst supported on reticulated alumina-mullite foam was synthesized by aerosol assisted coating. The synthesis process was optimized from the technological and economic aspect. Ultrasonically generated NiCl2 water solutions were applied to α-Al2O3-mullite foam in a tubular quartz reactor. The first procedure involved calcination at 773 K for 1 h in order to obtain NiO/Al2O3 precursor. The second procedure involved drying at 473 K for 1 h without oxidation. The activation step involved hydrogen reduction at 633 K. The effectiveness of the low-temperature hydrogen reduction was compared for those systems. It was determined that the samples were reduced in a high degree at 633 K for 90 minutes and the hydrogen flow rate of 20L/h. However, SEM of calcined sample shows presence of agglomerates. The samples reduced from NiCl2 had no agglomerates and the metallic phase was homogeneously dispersed compared to the samples obtained by NiO reduction. The most probable reason for the effective low-temperature reduction was the formation of thin coatings consisted of oxide and chloride precursors for the catalytically active components. XRD analyse of the samples after the reduction at 633 K for 90 minutes showed only metallic nickel, alumina and mullite phases. Residual phases of NiO and NiCl2, as well as NiAl2O4, were not detected. The production process can be simplified and economically more favourable by avoiding the calcination step. PB - Association of Metallurgical Engineers of Serbia (AMES) PB - University of Belgrade – Faculty of Technology and Metallurgy Belgrade (TMF) C3 - Proceedings: First Metallurgical & Materials Engineering Congress of South-East Europe (MME SEE 2013) T1 - Synthesis of catalytic materials based on system Ni/alfa-Al2O3 suported on monolith ceramic foams SP - 414 EP - 420 UR - https://hdl.handle.net/21.15107/rcub_cherry_5160 ER -
@conference{ author = "Nikolić, Vesna and Kamberović, Željko and Anđić, Zoran and Korać, Marija and Sokić, Miroslav and Stojanović, Jovica", year = "2013", abstract = "In the present investigation, nanostructured Ni/Al2O3 catalyst supported on reticulated alumina-mullite foam was synthesized by aerosol assisted coating. The synthesis process was optimized from the technological and economic aspect. Ultrasonically generated NiCl2 water solutions were applied to α-Al2O3-mullite foam in a tubular quartz reactor. The first procedure involved calcination at 773 K for 1 h in order to obtain NiO/Al2O3 precursor. The second procedure involved drying at 473 K for 1 h without oxidation. The activation step involved hydrogen reduction at 633 K. The effectiveness of the low-temperature hydrogen reduction was compared for those systems. It was determined that the samples were reduced in a high degree at 633 K for 90 minutes and the hydrogen flow rate of 20L/h. However, SEM of calcined sample shows presence of agglomerates. The samples reduced from NiCl2 had no agglomerates and the metallic phase was homogeneously dispersed compared to the samples obtained by NiO reduction. The most probable reason for the effective low-temperature reduction was the formation of thin coatings consisted of oxide and chloride precursors for the catalytically active components. XRD analyse of the samples after the reduction at 633 K for 90 minutes showed only metallic nickel, alumina and mullite phases. Residual phases of NiO and NiCl2, as well as NiAl2O4, were not detected. The production process can be simplified and economically more favourable by avoiding the calcination step.", publisher = "Association of Metallurgical Engineers of Serbia (AMES), University of Belgrade – Faculty of Technology and Metallurgy Belgrade (TMF)", journal = "Proceedings: First Metallurgical & Materials Engineering Congress of South-East Europe (MME SEE 2013)", title = "Synthesis of catalytic materials based on system Ni/alfa-Al2O3 suported on monolith ceramic foams", pages = "414-420", url = "https://hdl.handle.net/21.15107/rcub_cherry_5160" }
Nikolić, V., Kamberović, Ž., Anđić, Z., Korać, M., Sokić, M.,& Stojanović, J.. (2013). Synthesis of catalytic materials based on system Ni/alfa-Al2O3 suported on monolith ceramic foams. in Proceedings: First Metallurgical & Materials Engineering Congress of South-East Europe (MME SEE 2013) Association of Metallurgical Engineers of Serbia (AMES)., 414-420. https://hdl.handle.net/21.15107/rcub_cherry_5160
Nikolić V, Kamberović Ž, Anđić Z, Korać M, Sokić M, Stojanović J. Synthesis of catalytic materials based on system Ni/alfa-Al2O3 suported on monolith ceramic foams. in Proceedings: First Metallurgical & Materials Engineering Congress of South-East Europe (MME SEE 2013). 2013;:414-420. https://hdl.handle.net/21.15107/rcub_cherry_5160 .
Nikolić, Vesna, Kamberović, Željko, Anđić, Zoran, Korać, Marija, Sokić, Miroslav, Stojanović, Jovica, "Synthesis of catalytic materials based on system Ni/alfa-Al2O3 suported on monolith ceramic foams" in Proceedings: First Metallurgical & Materials Engineering Congress of South-East Europe (MME SEE 2013) (2013):414-420, https://hdl.handle.net/21.15107/rcub_cherry_5160 .