DE432418C - Manufacture of molded silica gel - Google Patents

Manufacture of molded silica gel

Info

Publication number
DE432418C
DE432418C DEP50092D DEP0050092D DE432418C DE 432418 C DE432418 C DE 432418C DE P50092 D DEP50092 D DE P50092D DE P0050092 D DEP0050092 D DE P0050092D DE 432418 C DE432418 C DE 432418C
Authority
DE
Germany
Prior art keywords
percent
silica gel
manufacture
silica
colloidal
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
DEP50092D
Other languages
German (de)
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.)
KUNO WOLF DR ING
MAX PRAETORIUS DR
Original Assignee
KUNO WOLF DR ING
MAX PRAETORIUS DR
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 KUNO WOLF DR ING, MAX PRAETORIUS DR filed Critical KUNO WOLF DR ING
Priority to DEP50092D priority Critical patent/DE432418C/en
Application granted granted Critical
Publication of DE432418C publication Critical patent/DE432418C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00Silicon; Compounds thereof
    • C01B33/113Silicon oxides; Hydrates thereof
    • C01B33/12Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/157After-treatment of gels
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09CTREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/28Compounds of silicon
    • C09C1/30Silicic acid
    • C09C1/3009Physical treatment, e.g. grinding; treatment with ultrasonic vibrations
    • C09C1/3036Agglomeration, granulation, pelleting

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Colloid Chemistry (AREA)

Description

Herstellung von geformtem Kieselsäuregel. Es ist bekannt, daß man aus Kieselsäure- Cr ein geformtes Gel herstellen kann. Die hierzu benutzte Gallerte muß einen be- stimmten Wassergehalt besitzen, wenn das claraus durch Formung und Trocknung herge- stellte Präparat stabil sein soll. 'lan hat ferner versucht, die Einhaltung einer bestimmten Wassermenge der Galierte zu umgehen durch Beimischung heterogener Substanzen. wie z. B. Ton, IL olin, hicsel-tn- ti. dgl. Es wurde nun gefunden. daß man die Her- stellung von geformtem hieselsäuregel bedeu- tend vereinfachen kann, weni#- man folgender- maßen verfährt. Man durchknetet eine_hieselsätireg_tllerte, Welche ; 5 bis 95 Prozent Wasser c=lthält, finit eileer kolloiden Kieselsäurelösung, for int die Masse und trocknet bei rio bis iSo= in einer üblichen Trockenvorrichtung, wobei ein Zu- saninienfritten der Teilchen stattfindet und eine ihre Form beibehaltende Masse resultiert. Vorzti-sweise wir;' ertill@lun@sgemäß der Gallerte i bis 2 Prozent einer etwa Ioprozen- tigen kolloi(len I-Ziesels:itii-eliistni- zugemischt. Verwendet inan an Stelle der roprozentigen I:oiloi(len I@ie,el,attr@l#.ISttn@@ eine solche -voit r bis 5 Prozent, so nitili inan (las Tempo der Trocknung Verlangsamen. 11111 auch 1t1 (llesen1 Falle ein ''rauchbare, Produkt zu erhalten. :AIIS wirtschaftlichen Gründen wird 111a11 aller zu (1e11 lii>lierprozentigen ILicsels:iurel@i,ungell Treffen, 11-(i1 dadurch eine l;iii-zere Herstel- lungsdaller lle, Pr@@ciul;te, er1115glicht wird tillcl ci@_@lurch (li,# F@crstcllun,l;os;cn ,ich er- niedrigen. Erhnclttrlgsgeniäß besteht also das `"erfahren darin, daß man einer Iiieseisätire- gallerte von ;5 bis 95 Prozent Wassergehalt i bis 2 Prozent einer i- bis ioprozentigen kol- loiden Kiesels:iurelö sung mlnlischt, die 'lasse homogenisiert, formt und hierauf bei mo bis iSo° C: trocknet. Es wurde ferner gefunden, tlaß man unter AIn\'CndunD eines Autoklaven die zur Form- gebung dienende kolloide Iiieselsätirelösung aus der Itieselsätiregallerte selbst darstellen kann. Wird ninlllch Kieselsätiregallerte von etwa 6o bis 95 Prozent Wassergehalt in einen: Autoklaven allmählich auf höhere Temperatur gebracht, so löst sich ein Teil der Kieselsäure kolloidal in (lein Hv(lratwasser auf. Es läßt sich aus einigen Versuchen leicht feststellen, wie lange man erhitzen muß, urn die zur Fornigebtin- einer bestimmten Aushangs- nienge Gallerte nötige Menge kolloider Isiesel- ,ätirelösung herzustellen. Hierauf wird der Atitoldav entleert, (lieMasse geformt und bei 11l) bis 1 So' getrocknet. Beispiele: r. 11a11 Stellt ?0 l;- hiescls:iure@allerte finit S;1 1'rozellt Wasser (Sur eh Fällen Voll Wasser- glasl#')stlll,; mittels Satire in üblicher '''eise her. DMltl I111SCht Uran 200 g einer ioprozen- ti@en kolloiden Kieselsänrelösun- zti, durch- ki;clct und tnrlnt in üblicher ''-'eise. Dann trucknct man die geformte blasse bei r50 ini T roC1;e 11 Schrank. 2. 11:n1 crhitr@.ro kt; einer @iic@el@:iure- @allertc, I@cl%hc @i2 1'1-07c111 11Ta@@CI" cIItlI:ilt; in eineue Autoklaveti, während 3 Stunden auf i; o'. Dann wird der Autoklav entleert die Nla.se getörmt und bei i So° getrocknet.Manufacture of molded silica gel. It is known that silicic acid Cr can produce a shaped gel. The jelly used for this must have the right water content, if that claraus produced by shaping and drying The preparation should be stable. 'Lan has also tried to comply a certain amount of water to be circumvented by admixing heterogeneous Substances. such as B. Ton, IL olin, hicsel-tn- ti. like It has now been found. that one position of molded silica gel is important tend to simplify, less # - one follows- measured moves. One kneads a_hieselsätireg_tllerte, Which ; 5 to 95 percent water c = oil, finite eileer colloidal silica solution, for int die Mass and dries at rio to iSo = in one usual drying device, with a feed sanine frits of the particles takes place and a shape-retaining mass results. Preferably we; ' ertill @ lun @ s according to the Jelly 1 to 2 percent of an approximately 10 percent term colloi (len I-Ziesels: itii-eliistni- admixed. Used in place of the ro-percent I: oiloi (len I @ ie, el, attr @ l # .ISttn @@ such a -voit r to 5 percent, so nitili inan (read tempo of the Slow down drying. 11111 also 1t1 (lread1 Trap to get a smokable product. : AIIS economic reasons will be 111a11 of all to (1e11 lii> lier-percentage ILicsels: iurel @ i, ungell Meeting, 11- (i1 thereby a l; iii-zere manufacture lungsdaller lle, Pr @@ ciul; te, is made possible tillcl ci @ _ @ lurch (li, # F @ crstcllun, l; os; cn, i er low. In terms of receiving benefits, this is the case `" experience in the fact that one gelatinized from; 5 to 95 percent water content 1 to 2 percent of a 1 to 10 percent col- loid pebbles: acidic solution is mixed that leaves homogenizes, forms and then at mo bis iSo ° C: dries. It has also been found to be omitted AIn \ 'CndunD of an autoclave that is used to form colloidal diesel oil solution from the Itieselsätiregallerte represent themselves can. Will ninlllch silica gel jelly from about 6o to 95 percent water content in one: Autoclave gradually to higher temperature some of the silica dissolves colloidal in (lein Hv (water. It leaves can be easily ascertained from a few experiments how long you have to heat to get the Fornigebtin- a certain notice- small amount of gel required amount of colloidal Isiesel to produce ätirelösung. Then the Atitoldav emptied, (left mass formed and attached 11l) dried to 1 sun. Examples: r. 11a11 represents? 0 l; - hiescls: iure @ allerte finite S; 1 1'rozellt Wasser (sur eh cases full of water glasl # ') stlll ,; by means of satire in the usual '''way here. DMltl I111SCht uranium 200 g of an ioprozen- ti @ en colloidal silica solution, through- ki; clct and tnrlnt in the usual ''-'eise. then trucknct the molded pale at r50 ini T roC1; e 11 cabinet. 2. 11: n1 crhitr @ .ro kt; one @ iic @ el @: iure- @allertc, I @ cl% hc @ i2 1'1-07c111 11Ta @@ CI "cIItlI: ilt; in a new autoclave, for 3 hours on i; O'. Then the autoclave is emptied, the Nla.se is thrown and dried at 10 °.

Gegenüber den unter Zusatz von Beterogenen `ubstanzen geformten Kieselsäuregelen hat die leergestellte Masse den Vorzug, ein einheitliches, nicht durch Fremdsubstanzen verunreinigtes Produkt zu sein.Compared to the silica gels formed with the addition of heterogeneous substances the empty mass has the advantage of being uniform, not by foreign substances to be contaminated product.

Claims (2)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung von g efornitetn Kieselsättreäel, dadurch gekentizeichnet, daß mati eine Kieselsäuregallerte, welche 75 bis 95 Prozent Wasser enthält, mit i bis 2 Prozent einer i- bis roprozentigen kolloiden Kieselsäurelösung vermischt, darauf homogenisiert, formt und sodann bei iro bis iso° C trocknet. PATENT CLAIMS: i. Process for the production of shaped silica saturates, characterized in that mati a silica gel containing 75 to 95 percent water is mixed with 1 to 2 percent of a 1 to 10 percent colloidal silica solution, then homogenized, shaped and then at iro to iso ° C dries. 2. Abänderung des Verfahrens nach Anspruch i, dadurch gekennzeichnet, daß man die zur Formung erforderliche kolloide Kieselsäurelösung aus der Kieselsäctregallerte durch Erhitzen unter Druck bei ioo bis 300° in einem Autoklaven erzeugt und die Masse nach der Formung trocknet.2. Modification of the method according to claim i, characterized in that that the colloidal silicic acid solution required for molding was removed from the silicas generated by heating under pressure at 100 to 300 ° in an autoclave and the Mass dries after molding.
DEP50092D 1925-03-21 1925-03-22 Manufacture of molded silica gel Expired DE432418C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP50092D DE432418C (en) 1925-03-21 1925-03-22 Manufacture of molded silica gel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE249555X 1925-03-21
DEP50092D DE432418C (en) 1925-03-21 1925-03-22 Manufacture of molded silica gel

Publications (1)

Publication Number Publication Date
DE432418C true DE432418C (en) 1926-08-04

Family

ID=25768308

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP50092D Expired DE432418C (en) 1925-03-21 1925-03-22 Manufacture of molded silica gel

Country Status (1)

Country Link
DE (1) DE432418C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970132C (en) * 1948-12-31 1958-08-21 Monsanto Chemicals Process for converting silica hydrogel into silica hydrosol

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970132C (en) * 1948-12-31 1958-08-21 Monsanto Chemicals Process for converting silica hydrogel into silica hydrosol

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