METHODS FOR CONTROLLING THE QUALITY OF METAL NANOCATALYST FOR GROWING HIGH YIELD CARBON NANOTUBES

Method and processes for determining the particle size distribution of metal catalysts are provides. Superconducting Quantum Interference Device (SQUID) magnetometer is used to evaluate the magnetic catalyst particle sizes dispersed in the support material. Dependence on variation of the metal/suppo...

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Bibliographische Detailangaben
Hauptverfasser:	HARUTHYUNYAN, AVETIK, FERNANDEZ, ELENA, MORA, TOKUNE, TOSHIO
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING NATURAL OR ARTIFICIAL THREADS OR FIBRES PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS SPINNING TESTING TEXTILES THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	Method and processes for determining the particle size distribution of metal catalysts are provides. Superconducting Quantum Interference Device (SQUID) magnetometer is used to evaluate the magnetic catalyst particle sizes dispersed in the support material. Dependence on variation of the metal/support material ratio, which defines the metal particle sizes, the catalyst can show paramagnetic, superparamagnetic, and ferromagnetic behaviors. L'invention concerne un procédé et des processus permettant de déterminer la distribution granulométrique de catalyseurs métalliques. On utilise un magnétomètre à interféromètre quantique supraconducteur (SQUID) pour évaluer les dimensions de particules de catalyseur magnétique dispersées dans le matériau support. En fonction de la variation du rapport métal/matériau support, qui définit les dimensions des particules métalliques, le catalyseur peut présenter des comportements paramagnétiques, superparamagnétiques et ferromagnétiques.