Neuere Anschauungen über die Hydrolyse anorganischer Salze und die Chemie der hochmolekularen Hydrolyseprodukte (einschließlich der Iso- und Heteropoly-verbindungen)

Jander, Gerhart; Jahr, Karl Friedrich

doi:10.1007/bf02556476

Cited by 44 publications

(3 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first attempt to interpret the experimental data of Figure 1 has been performed by using the general minimization program LETAGROPVRID12'13 largely used by the Scandinavian school to calculate hydrolysis constants. The failure to get even a poor fit of the data with any hydrolytic scheme implying the presence of soluble hydrolyzed species, together with the literature indications3'4'11 showing that the ultimate hydrolysis product is a solid (more or less polymerized), has induced us to try to interpret the experimental results along the pattern FelNO^3"1 + (3 -n)OH~-Fe(N03)"(0H)3_"(s) Ke (2) Since in a nitrate medium the complex formation equilibria Fe34 + 03 Fe(N03)"3'n Kn (3) are also present, we obtain for Ke {H+}3~n Ke ~KnKw 3"n {Fe3+} {N03T (4) where {}represents activity, the activities of the solid species and H20 have been set equal to 1, Ke and Kn are formation constants, and Kw is the dissociation constant of H20. Since in our experiments (N03~) is constant, eq 4 is further simplified to (H+)3~7(Fe3+) = K* = KeKnKw 3""(N03T If no soluble polynuclear hydrolysis products are present, Z must be equal to zero in a plot of Z vs. log h, till the formation of Fe(N03)n(0H)3_"(s) starts to take place.…”

Section: Resultsmentioning

confidence: 99%

Hydrolytic precipitation of iron(III) in 1 M sodium nitrate medium

Danesi¹,

Chiarizia²,

Scibona³

et al. 1973

Inorg. Chem.

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Hydrolytic precipitation of iron(III) in 1 M sodium nitrate medium

Danesi¹,

Chiarizia²,

Scibona³

et al. 1973

Inorg. Chem.

View full text Add to dashboard Cite

“…Jander and Jahr (8) had investigated the hydrolysis of inorganic salts, including zirconyl chlorate and nitrate, and the chemistry of their high-molecular products of hydrolysis. They found that most of the salts yield a number of products of hydrolysis and that their solutions contain several isopolybases in contact with one another.…”

Section: Onementioning

confidence: 99%

Titanium Sulfate Solutions

Hixson¹,

Stetkewicz²

1940

Ind. Eng. Chem.

View full text Add to dashboard Cite

Measurements of refractive index, dispersion, and viscosity were made on titanium sulfate solutions of acidities (ratios of sulfur trioxide to titanium dioxide) ranging from 1.001 to 3.004 and concentrations ranging from 0.5 to 26 per cent titanium dioxide. No definite break was found in the curves which might indicate complex or compound formation at any definite concentration or composition, but the viscosity measurements did produce evidence of complex formation.Refractivities were found to be additive. The course of a hydrolysis by boiling was followed by refractive index measurements and by analyses, and commercial use of refractive index in conjunction with density is suggested.

show abstract

“…This formula is derived from the idea of "isopolybases" found by Jander (16) from diffusion studies of aqueous solutions of aluminum and other metal salts just before the precipitation of the hydroxide. However, Eigenberger's own experiments do not give much support for this formula.…”

mentioning

confidence: 99%

Studies on Aluminum Soaps. II. The Composition, Structure, and Gelling Properties of Aluminum Soaps.

Gray¹,

Alexander²

1949

J. Phys. Chem.

View full text Add to dashboard Cite

The aliiminiin salts of the higher fat'ty acids find considerable use in t,he manufacture of paint.s, for thickening hydrocarbon oils (greases), and ns stabilizers for emulsions (13,20). Their nature and composition are, ho\vever, siuprisingly obscure. Corninercially they are made by an aqueous double decomposil ion process (13,20). The composition and thickening (often termed "gelling") pi'operties of the find product depend critically on a number of factors, siich as the pH and tempernture during the precipitat,ion, the speed of mising, the size of the particles formed, etc. One Trery important factor is the ma8nner nntl est8eiits of t81ie drying of the precipit#ute once it has been formed and \rashecl. In scienl ific in~estigat~ions of t,heir composition a non-aqueous double tleconiposit'ion react ion, such as that' Iiet'iveen an aluminum alkoside and rl. fatty acid, has much to i'ecommend it, as t,lie little-knonii influence of writer can be eliminated 01' conti-oiCerI.McBain and ,1IcClatchie (21), \\rho reacted aluininiun ethoside \\.it,h pnlmit ic acid, fount1 that not more ihan ti\co fatt'y acid groups coiild lie atltnclietl t,o each aliiminum :Itom, m t l they concluded th:Lt the tjrisoap does not, exist. In point, of fact, t'heir most reliable an:tlyais figures intlicnt8e 2% lower extent of react ion e\-en than t,\\,o fntt'y acid groups. Thliies of 5.2-5.4 per cent) A41,0a \yere found; nluminim etlioside \\.ith 13 fnttp acid groups replaced by pa1mit)ic acid coinresponds t,o 5.44 per cent AI?O3. AlcBain's co\yorliers ( 2 i ) have 1,eceiitly considered t,he qiiest'ion in greater detail. From a study using the aqueous pi*ecipit8ation met,hod t'hey conclridecl tlint bot'h the monolnurate and the dilanrate exist, ns tlefiii ite clirinical indivicliials and t'lie x-ray tlat'a are claimed t o support this T.ie\y.Eigenliei3ger and Eigenher~er-Bitt'i~er (11, 12), in n yery full esamiiintioll of l)otjh tlic nqiieous and noli-aqiieous precipitat'ion methods, conclutlecl t hat, in Iioth 1 Prcsciited at the Twciity-second Nntioiial Colloid Symposium, which WLS licit1 U I I C I C~ t h e nuspices of tjhe Division of Colloid Chemistry of the Biiierican Clielnicnl RocictJ, nt Cniiil)t~itlge, 1Inssnchuset ts, Julie 23-25, 194s.

show abstract

Neuere Anschauungen über die Hydrolyse anorganischer Salze und die Chemie der hochmolekularen Hydrolyseprodukte (einschließlich der Iso- und Heteropoly-verbindungen)

Cited by 44 publications

References 37 publications

Hydrolytic precipitation of iron(III) in 1 M sodium nitrate medium

Hydrolytic precipitation of iron(III) in 1 M sodium nitrate medium

Titanium Sulfate Solutions

Studies on Aluminum Soaps. II. The Composition, Structure, and Gelling Properties of Aluminum Soaps.

Contact Info

Product

Resources

About