Verfahren zum Entfernen von Metallverunreinigungen aus Auflösungen unter Verwendung von Xerogelen aus merkaptofunktionaler Silika

A method is disclosed herein for removing metal contaminates from solution using mercapto-functional silica xerogels. These mercapto-functional silica xerogels have a surface area greater than 400 m2/g, an average pore diameter of at least 6 nm and a pore volume of at least 2 cm3/g. They are particu...

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Bibliographische Detailangaben
Hauptverfasser:	REGGIO, GUY LEO, DENG, QIN, SU, KAI, HAHN, JAMES RICHARD, BURNS, GARY THOMAS
Format:	Patent
Sprache:	ger
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	A method is disclosed herein for removing metal contaminates from solution using mercapto-functional silica xerogels. These mercapto-functional silica xerogels have a surface area greater than 400 m2/g, an average pore diameter of at least 6 nm and a pore volume of at least 2 cm3/g. They are particularly useful for removing Group VIII metals of the Periodic Table of Elements, such as platinum, from solutions comprising polyorganosiloxane fluids and resins.