Influences of synthesis methods and modifier addition on the properties of Ni-based catalysts supported on reticulated ceramic foams

Nikolić, Vera; Kamberović, Željko; Anđić, Zoran; Korać, Marija; Sokić, Miroslav; Maksimović, Vesna

doi:10.1007/s12613-014-0974-x

Cited by 8 publications

(21 citation statements)

References 22 publications

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“…In addition, the authors concluded that Ni-based catalysts, prepared by using aerosol assisted impregnation and calcined at 773 K, had undesirable agglomerates on the α-Al 2 O 3 -based foam surface. Ni-based catalysts prepared by using the same method and obtained from chloride precursors reached significantly higher reduction degrees at same temperatures [23].…”

Section: Resultsmentioning

confidence: 89%

“…Previously, Ni/Al 2 O 3 and Ni-M/Al 2 O 3 catalysts, modified by additives M = Pd, Cu or Fe, were synthesized by aerosol assisted impregnation [23]. Oxides and chlorides were used as precursors for metals.…”

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confidence: 99%

“…Reduction of chloride precursor at 633 K, without previous calcination, resulted in optimal morphology of Ni coating. Modification with Pd enabled the highest reduction efficiency of all precursors [23] due to the hydrogen spillover effect [24,25]. Chloride precursors for Ni-Pd coating reached significantly higher reduction degree (98.2 wt.…”

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confidence: 99%

“…On the basis of previously obtained results [23], Ni--based catalysts were synthesized by aerosol assisted impregnation using chlorides as precursors. Catalysts were supported on previously prepared α-Al 2 O 3 -based foams [26,27] The foams were produced by polymer replication route that is described elsewhere [26,27].…”

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confidence: 99%

“…The catalysts were reduced by hydrogen at 533 and 633 K for 90 min. Set-up for the aerosol assisted impregnation and the synthesis method details are presented elsewhere [23].…”

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confidence: 99%

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Nickel-based catalysts: Dependence of properties on nickel loading and modification with palladium

Nikolić¹,

Kamberovic²,

Korać³

et al. 2016

Hem Ind

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The aim of this study was comparative analysis of catalysts with 5 and 20 wt.% Ni loading, with and without Pd additive, and it included: determination of reduction degrees, investigation on microstructure by scanning electron microscopy and chemical analysis by energy-dispersive spectroscopy. Ni/Al 2 O 3 and Ni-Pd/Al 2 O 3 catalysts supported on α-Al 2 O 3-based foams were synthesized by aerosol assisted impregnation. Impregnation of the foams by ultrasonically aerosolized chlorides was followed by drying at 473 K and hydrogen reduction at 533 and 633 K. Lower Ni loading resulted in higher reduction degrees. Ni loading of 20 wt.% enabled relatively uniform coverage of the foam with a metallic coating. Nearly complete reduction was achieved at both temperatures with activity modifier (Pd). Reduction degrees reached 99.4 and 98.2 wt.% at 533 K for 5 and 20 wt.% of Ni, respectively.

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Section: Resultsmentioning

confidence: 89%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

“…The catalysts were reduced by hydrogen at 533 and 633 K for 90 min. Set-up for the aerosol assisted impregnation and the synthesis method details are presented elsewhere [23].…”

mentioning

confidence: 99%

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