DEP0052598DA - Process for the preparation of a reversible acidic silica gel. - Google Patents
Process for the preparation of a reversible acidic silica gel.Info
- Publication number
- DEP0052598DA DEP0052598DA DEP0052598DA DE P0052598D A DEP0052598D A DE P0052598DA DE P0052598D A DEP0052598D A DE P0052598DA
- Authority
- DE
- Germany
- Prior art keywords
- brine
- reversible
- gels
- gel
- converted
- 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
Links
- 230000002378 acidificating effect Effects 0.000 title claims description 5
- 230000002441 reversible effect Effects 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title description 9
- 239000000741 silica gel Substances 0.000 title 1
- 229910002027 silica gel Inorganic materials 0.000 title 1
- 239000000499 gel Substances 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 6
- 239000012267 brine Substances 0.000 claims description 5
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 5
- 150000007513 acids Chemical class 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 125000003277 amino group Chemical group 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 241000283925 Spermophilus Species 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- 239000004566 building material Substances 0.000 claims 1
- 239000003054 catalyst Substances 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000003801 milling Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 235000019353 potassium silicate Nutrition 0.000 claims 1
- 230000001376 precipitating effect Effects 0.000 claims 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims 1
- 229910021653 sulphate ion Inorganic materials 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- ANCLJVISBRWUTR-UHFFFAOYSA-N diaminophosphinic acid Chemical compound NP(N)(O)=O ANCLJVISBRWUTR-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005370 electroosmosis Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Description
JBADISGHE AHILIN- & SODA-FABRIK J BADISGHE AHILIN & SODA FACTORY
I0 Gf0 Farbenindus trie Aktiengesellschaft »In Auflösung"I 0 Gf 0 Farbenindus trie Aktiengesellschaft »In dissolution"
52598JEgb/12 j52598JEgb / 12 j
Unser Zeiohenj 0ΛΖ« 15 564o Hb/Hao Our Zeiohenj 0 Λ Ζ «15 564o Hb / Ha o
, 19.August 1949ο, August 19, 1949ο
sux verstellung eines reversiblen sauren JEieselgele ρ sux adjustment of a reversible acidic diesel gel ρ
Es ist "bekannt, aus Siiioiumdioxyd enthaltenden Stoffen, Z0B0' AlfeäliaiXikaten* Pjbonolith u$wo, durch Zersetzen mit Säuren oder SaIs en in I/ösungen saure Kieselaole heraus teilen, die ^e nac& den angewandten Bedingungen r&soh ©der langsam zu einem Kieeelgel ersrfcaxreiie Die eo erhaltenen Gele sind in (Leu meisten fällen nieht rerersibel und im übrigen stark durch Salze verunreinigt f die sich x< schwer und "unvollständig durch Auswaschen entfernen lassen^ Es ward© zwar sehen versucht, Sole, die auoh aus reversiblen Kiesel« gelen hergestellt sein können, v©r der Gelfällung durch Dialjse oder Elektr®@smoee &o au reinigen, dass sich der etwa bleibend® Salzgehalt bei der Weiterverarbeitung nicht mehr störend auswirkt ο Die genannten Ma&a&hmen ergeben aber bei diesem, sehr umständlichen und zeitraubenden Eeinigungsverfahren nur S©ie von sehr geringes1 Konzentrat ion ο Auch bei der herstellung veia Kieselsolen mit solchen. Säuren., die zur Bildung schwerlöslicher, leicht abtrennbarer Salze führen, ist noch eine nachträgliche Dialyse oder Elektroosmose erforderlich* wenn man möglichst reine Sole bswo reine daraus erhaltene Gele gewinnen willo It is known that from substances containing silicon dioxide, Z 0 B 0 'AlfeäliaiXikaten * Pjbonolite u $ w o , by decomposing with acids or sals in solutions, acidic silica oils split out, which slowly depending on the conditions used to a Kieeelgel ersrfcaxreiie The eo obtained gels are in (Leu most cases not rerersible and otherwise strongly contaminated by salts f which can be x & lt difficult and "incompletely removed by washing out ^ It was tried to see brine, which auoh made of reversible pebbles «Gels can be produced, before gel precipitation by dialjse or Elektr® @ smoee & o au clean so that the remaining salt content no longer has a disruptive effect on further processing ο However, the measures mentioned result from this very laborious and time-consuming cleaning process Only from a very low 1 concentration ο Also in the manufacture of silica sols with acids that are easily separated to form poorly soluble ones nable salts lead, a subsequent dialysis or electroosmosis is necessary * if you want to obtain the purest possible brine or pure gels obtained from it or the like
Es hat si oh nun gezeigt, class man in einfacher Weise reversible saure Kieselgele herstellen kaany wenn man Silikatlösungen mit mehrbasischen Mineralsäuren versetzt, bei denen ein leil der OH-Sruppen dureh Amino- oder grafostitnlerte Aminogruppen ersetzt ist β Man erhält so Produkte, bei denen sich ein besonderes Heini~ gungsverfahren ey&brigt, weil die ^ bei der ^iliciumdiGxydbil» dung etwa entgteheaden Terunreiaigungen ungehadlioh sind^ Als lällungsmittel der genannten Art kommen 3oBo Amidosulf©säure, Amino-It has now shown that reversible acidic silica gels can be produced in a simple manner by adding polybasic mineral acids to silicate solutions in which a portion of the OH groups have been replaced by amino or graphite-containing amino groups a special Heini ~ approval procedures ey & brigt because the ^ at ^ iliciumdiGxydbil »-making about entgteheaden Terunreiaigungen ungehadlioh are ^ As lällungsmittel of the type mentioned are 3oB o Amidosulf © acid, amino
fflethjlamidosulf©säure oder Diamidophosphorsäurefflethjlamidosulph © acid or diamidophosphoric acid
Claims (1)
Family
ID=
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