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zhangwengui330(½ð±Ò+3):ллӦÖú£¡£¡ 2010-09-19 11:19:42
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http://en.wikipedia.org/wiki/Isoelectric_point

The following list gives the pH25¡ãC of isoelectric point at 25 ¡ãC for selected materials in water:

Note: The list is ordered by increasing pH values.

tungsten(VI) oxide WO3: 0.2-0.5 [3]
antimony(V) oxide Sb2O5: <0.4 to 1.9 [3]
vanadium(V) oxide (vanadia) V2O5: 1-2 [4] (3 [3])
silicon oxide (silica) SiO2: 1.7-3.5 [3]
silicon carbide (alpha) SiC: 2-3.5 [5]
tantalum(V) oxide, Ta2O5: 2.7-3.0 [3]
tin(IV) oxide SnO2: 4-5.5 (7.3 [6])
zirconium(IV) oxide (zirconia) ZrO2: 4-11 [3]
manganese(IV) oxide MnO2: 4-5
delta-MnO2 1.5, beta-MnO2 7.3 [4]
titanium(IV) oxide (titania) (rutile or anatase) TiO2: 3.9-8.2 [3]
silicon nitride Si3N4: 6-7
iron (II, III) oxide (magnetite) Fe3O4: 6.5-6.8 [3]
gamma iron (III) oxide (maghemite) Fe2O3: 3.3-6.7 [3]
cerium(IV) oxide (ceria) CeO2: 6.7-8.6 [3]
chromium(III) oxide (chromia) Cr2O3: 7 [4] (6.2-8.1 [3])
gamma aluminium oxide (gamma alumina) Al2O3: 7-8
thallium(I) oxide Tl2O: 8 [7]
alpha iron (III) oxide (hematite) Fe2O3: 8.4-8.5 [3]
alpha aluminium oxide (alpha alumina, corundum) Al2O3: 8-9
silicon nitride Si3N4: 9 [6]
yttrium(III) oxide (yttria) Y2O3: 7.15-8.95 [3]
copper(II) oxide CuO: 9.5 [6]
zinc oxide ZnO: 8.7-10.3 [3]
lanthanum(III) oxide La2O3: 10
nickel(II) oxide NiO: 10-11 [6] (9.9-11.3 [3])
lead(II) oxide PbO: 10.7-11.6 [3]
magnesium oxide (magnesia) MgO: 12-13 (9.8-12.7 [3])
7Â¥2010-09-15 13:19:18
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Originally posted by ÐíÓбø at 2010-09-14 19:15:30:
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ÒýÓÃÎÄÏ×£ºJ. Am. Ceram. Soc., 83 [10] 2341¨C59 (2000)
Colloidal Processing of Ceramics
Jennifer A. Lewis
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Originally posted by ÄÉÃ×³æ³æ at 2010-09-15 13:19:18:
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http://en.wikipedia.org/wiki/Isoelectric_point

The following list gives the pH25¡ã ...

8Â¥2010-09-17 10:48:00
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