DE467464C - Activation of silica - Google Patents

Activation of silica

Info

Publication number
DE467464C
DE467464C DEI27053D DEI0027053D DE467464C DE 467464 C DE467464 C DE 467464C DE I27053 D DEI27053 D DE I27053D DE I0027053 D DEI0027053 D DE I0027053D DE 467464 C DE467464 C DE 467464C
Authority
DE
Germany
Prior art keywords
silica
activation
gel
solidification
rotary kiln
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEI27053D
Other languages
German (de)
Inventor
Dr-Ing Hans Carstens
Dr Wolf Johannes Mueller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI27053D priority Critical patent/DE467464C/en
Application granted granted Critical
Publication of DE467464C publication Critical patent/DE467464C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Silicon Compounds (AREA)

Description

Aktivieren von Kieselsäure Aktives Kieselsäuregel wird bekanntlich so hergestellt, daß das aus dem Sol entstandene Gel ausgewaschen und darauf getrocknet wird. Damit es seine volle Wirksamkeit auch gegen organische Dämpfe erhält, muß es möglichst wasserfrei gemacht werden. Dies wird durch stufenweises Erhitzen auf 300° und darüber erreicht.Activating Silica Active silica gel is known manufactured in such a way that the gel formed from the sol was washed out and then dried will. In order for it to be fully effective against organic vapors, it must it should be made anhydrous as possible. This is done by gradually heating it up Reached 300 ° and above.

Die Durchführung dieses Verfahrens in gewöhnlichen C)fen erforderte bisher technisch umständliche Maßnahmen, bei denen die teure Handarbeit nicht zu vermeiden ist.It was necessary to carry out this procedure in ordinary C) ovens Previously technically cumbersome measures that did not involve expensive manual labor avoid is.

Es zeigte sich nun, daß die Aktivierung in technisch einfacher und wirtschaftlich billiger Weise ausgeführt werden kann, wenn man die bis zur Verfestigung des Gelgerüstes vorgetrocknete Kieselsäure im Drehofen bei bis zu 3oo bis 6oo° ansteigenden Temperaturen behandelt.It has now been shown that the activation is technically easier and economically cheaper way can be done if you get up to solidification of the gel structure predried silica in a rotary kiln at up to 3oo to 6oo ° increasing Treated temperatures.

Claims (1)

PATENTANSPRUCH: Verfahren zum Aktivieren von Kieselsäure durch Trocknen von Kieselsäuregel in zwei Stufen, dadurch gekennzeichnet, daß man bis zur Verfestigung des Gelgerüstes vorgetrocknetes Gel im Drehofen trocknet.PATENT CLAIM: Process for activating silica by drying of silica gel in two stages, characterized in that one up to solidification of the gel framework, pre-dried gel dries in the rotary kiln.
DEI27053D 1925-12-22 1925-12-23 Activation of silica Expired DE467464C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI27053D DE467464C (en) 1925-12-22 1925-12-23 Activation of silica

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE263483X 1925-12-22
DEI27053D DE467464C (en) 1925-12-22 1925-12-23 Activation of silica

Publications (1)

Publication Number Publication Date
DE467464C true DE467464C (en) 1928-10-25

Family

ID=25770770

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI27053D Expired DE467464C (en) 1925-12-22 1925-12-23 Activation of silica

Country Status (1)

Country Link
DE (1) DE467464C (en)

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