Process for the preparation of a temperature-stable TiO2/SiO2 mixed-oxide and its use as a catalyst carrier
Preparation of a titanium dioxide/silicone dioxide mixture, their hydrates and/or oxide hydrates comprises adding a titanium compound and/or their hydrolysis product with a silicic acid compound in an aqueous medium and hydrolyzing the titanium compound in presence or absence of the silicic acid com...
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| creator | DALLMANN, KAI BRASCH, ANDREA FREESE, UTE SCHIMANSKI, JUERGEN ROLFS, SOENKE DOELLING, KAI |
| description | Preparation of a titanium dioxide/silicone dioxide mixture, their hydrates and/or oxide hydrates comprises adding a titanium compound and/or their hydrolysis product with a silicic acid compound in an aqueous medium and hydrolyzing the titanium compound in presence or absence of the silicic acid compound comprising an aqueous silicic acid sol, where the titanium dioxide/silicone dioxide mixture comprises 0.5-95 wt.% of silicone and the titanium compound is a titanium alcoholate exhibiting at least 1-16C alcoholates. An independent claim is included for the titanium dioxide/silicone dioxide mixture comprising less than 25 wt.% of silicone dioxide and greater than 75, preferably 95 wt.% of the titanium dioxide that is present in titanium dioxide phase, where the titanium dioxide/silicone dioxide mixture exhibits pore volumes of greater than 0.35, preferably 0.50 ml/g and a rutile transformation temperature of greater than 850, preferably 1000[deg]C. |
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An independent claim is included for the titanium dioxide/silicone dioxide mixture comprising less than 25 wt.% of silicone dioxide and greater than 75, preferably 95 wt.% of the titanium dioxide that is present in titanium dioxide phase, where the titanium dioxide/silicone dioxide mixture exhibits pore volumes of greater than 0.35, preferably 0.50 ml/g and a rutile transformation temperature of greater than 850, preferably 1000[deg]C.</description><language>eng ; fre ; ger</language><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; CHEMISTRY ; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F ; INORGANIC CHEMISTRY ; METALLURGY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; THEIR RELEVANT APPARATUS ; TRANSPORTING</subject><creationdate>2006</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20061108&DB=EPODOC&CC=EP&NR=1719737A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20061108&DB=EPODOC&CC=EP&NR=1719737A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>DALLMANN, KAI</creatorcontrib><creatorcontrib>BRASCH, ANDREA</creatorcontrib><creatorcontrib>FREESE, UTE</creatorcontrib><creatorcontrib>SCHIMANSKI, JUERGEN</creatorcontrib><creatorcontrib>ROLFS, SOENKE</creatorcontrib><creatorcontrib>DOELLING, KAI</creatorcontrib><title>Process for the preparation of a temperature-stable TiO2/SiO2 mixed-oxide and its use as a catalyst carrier</title><description>Preparation of a titanium dioxide/silicone dioxide mixture, their hydrates and/or oxide hydrates comprises adding a titanium compound and/or their hydrolysis product with a silicic acid compound in an aqueous medium and hydrolyzing the titanium compound in presence or absence of the silicic acid compound comprising an aqueous silicic acid sol, where the titanium dioxide/silicone dioxide mixture comprises 0.5-95 wt.% of silicone and the titanium compound is a titanium alcoholate exhibiting at least 1-16C alcoholates. 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An independent claim is included for the titanium dioxide/silicone dioxide mixture comprising less than 25 wt.% of silicone dioxide and greater than 75, preferably 95 wt.% of the titanium dioxide that is present in titanium dioxide phase, where the titanium dioxide/silicone dioxide mixture exhibits pore volumes of greater than 0.35, preferably 0.50 ml/g and a rutile transformation temperature of greater than 850, preferably 1000[deg]C.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F INORGANIC CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING |
| title | Process for the preparation of a temperature-stable TiO2/SiO2 mixed-oxide and its use as a catalyst carrier |
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