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Brandt, R.; Petričević, R.; Pröbstle, H.; Fricke, J.

doi:10.1023/a:1027486401135

Cited by 64 publications

(42 citation statements)

References 30 publications

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“…Synthetic strategies for preparing nanoporous foams of many nonmetallic substances exist, including foams (aerogels) of silica; [7][8][9] main group, transition, lanthanide, and actinide metal oxides; [10][11][12][13][14][15][16] metal chalcogenides; [17,18] metal phosphides; [19] carbon; [20,21] organic polymers; [20,22] and even carbon nanotubes. [23,24] Additionally, numerous approaches for preparing macrocellular foams of various metals exist, [25,26] such as foaming of metal alloys using bubbled gas or decomposition of metal hydrides, [27,28] investment casting, [25,29] chemical vapor deposition onto polymer foam templates, [30] and cooling of liquid metal/hydrogen solutions through their eutectic points (the GASAR process).…”

Section: Introductionmentioning

confidence: 99%

Nanoporous Metal Foams

2010

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Nanoporous metal foams (NMFs) have been a long sought-after class of materials in the quest for high-surface-area conductive and catalytic materials. Herein we present an overview of newly developed synthetic strategies for producing NMFs along with an in-depth discussion of combustion synthesis as a versatile and scalable approach for the preparation of nanoporous, nanostructured metal foams. Current applications of NMFs prepared using combustion synthesis are also presented including hydrogen storage and catalysis.

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Section: Introductionmentioning

confidence: 99%

Nanoporous Metal Foams

2010

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“…Es gibt zahlreiche Synthesestrategien für die Herstellung nanoporöser Schäume aus nichtmetallischen Stoffen wie Quarz, [7][8][9] Hauptgruppenmetall-, Übergangsmetall-, Lanthanoid-und Actinoidoxiden, [10][11][12][13][14][15][16] Metallchalkogeniden, [17,18] Metallphosphiden, [19] Kohlenstoff, [20,21] organischen Polymeren [20,22] und Kohlenstoff-Nanoröhren. [23,24] Auch zur Synthese makrozellulärer Schaumstoffe aus Metallen sind zahlreiche Methoden bekannt, [25,26] z.…”

Section: Introductionunclassified

Nanoporöse Metallschäume

2010

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Nanoporöse Metallschäume (NMFs) werden seit langem als eine Klasse von Stoffen für leitfähige und katalytische Materialien mit großen Oberflächen untersucht. Dieser Aufsatz gibt einen Überblick über neue Strategien für die Herstellung von NMFs mit einem Schwerpunkt auf der Verbrennungssynthese und diskutiert aktuelle Anwendung von NMFs, unter anderem zur Speicherung von Wasserstoff und in der Katalyse.

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“…In principle, highly porous carbon xerogels like the system investigated offer themselves for many applications, however, the sodium impurity detected confines the underlying system to applications, where a higher ash content is uncritical. If highly pure carbons are required, other base systems using catalysts without metal cations are to be preferred [14,19,38,39].…”

Section: Discussionmentioning

confidence: 99%

Porous organic and carbon xerogels derived from alkaline aqueous phenol–formaldehyde solutions

2011

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Porous carbons were synthesized from the low cost precursors phenol and formaldehyde in aqueous solution, catalysed with NaOH. The xerogels were ambient pressure dried without prior solvent exchange. For an excess of formaldehyde, the resulting carbon xerogels show porosities up to 90%, with a predominant fraction of macroporosity, specific surface areas up to 768 m 2 /g and mesopore volumes up to 0.59 cm 3 /g. Small-angle X-ray scattering reveals fractal behaviour for many samples. Relevant sodium impurities up to 3-4 wt% in the organic and carbon samples cannot be avoided, even by washing of the samples. As possible reason for the high sodium content, the formation of crown ether like calix [6] arene is assumed. Overall, the sodium impurities detected confine the use of this system to applications, where higher ash contents are uncritical.

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Cited by 64 publications

References 30 publications

Nanoporous Metal Foams

Nanoporous Metal Foams

Nanoporöse Metallschäume

Porous organic and carbon xerogels derived from alkaline aqueous phenol–formaldehyde solutions

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