Ein Beitrag zur Kinetik der Fällungskristallisation

Hähnert, M.; Kleber, W.

doi:10.1007/bf01513072

Cited by 16 publications

(4 citation statements)

References 8 publications

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“…In studies of precipitation from similar solutions that were stirred continuously, nucleation and crystal growth were highly erratic. The precipitates from the stirred acid mixtures were very finely divided and difficult to filter and wash, in agreement with the results reported by Hahnert and Kleber (6).…”

Section: And Discussionsupporting

confidence: 90%

Effect of impurities on density and viscosity of simulated wet-process phosphoric acid

Cate¹,

Deming²

1970

J. Chem. Eng. Data

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Each of the common metallic impurities-Al, Fe, K, Ca, and Mg-increased the density and viscosity at 25°C. of simulated wet-process phosphoric acids containing 50, 75, and 104.4% H3PO4. Common anionic impurities-Cl, F, S04, and S1O2had little effect on either viscosity or density. When two or more impurities were present, their effects were roughly additive, but no general relationship of the effects of the different impurities could be established.

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Section: And Discussionsupporting

confidence: 90%

Effect of impurities on density and viscosity of simulated wet-process phosphoric acid

Cate¹,

Deming²

1970

J. Chem. Eng. Data

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“…This leads to low nucleation rates, growth of older particles, and a large final particle size. Fischer (4) and Hahnert and Kleber (5) have reported on barium sulfate precipitations carried out by dropwise addition of one reagent to the other. With 0.1 M reagents, particles larger than those of Suito and Takiyama were obtained.…”

Section: Discussion Of Precipitation Resultsmentioning

confidence: 99%

Effect of Mixing Conditions in Barium Sulfate Precipitation

O'Hern¹,

Rush²

1963

Ind. Eng. Chem. Fund.

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“…The influence of epitaxial impurity adsorption on the crystallization kinetics was considered in the series of systems with "anomalous" isomorphism [10][11][12][13][14][15][16][17][18][19]. The kinetic data for most of these systems are described sufficiently well by the simple Bliznakov equation, which is based on the Langmuir adsorption equation.…”

Section: Introductionmentioning

confidence: 99%

Growth kinetics and micromorphology of NH4Cl:Mn2+ crystals formed in the NH4Cl-MnCl2-H2O-CONH3 system

et al. 2012

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The growth kinetics and elementary growth processes on the surface of NH 4 Cl:Mn 2+ heteroge neous crystals formed in the NH 4 Cl-MnCl 2 -H 2 O-CONH 3 system are experimentally studied. It is found that a change in the composition of complexes in an NH 4 Cl crystal from Mn(NH 4 ) 2 Cl 4 · 2H 2 O to MnCl 2 · 2CONH 3 leads to the occurrence of a local maximum in the kinetic curve and a change in the shape of dis location growth centers from flat to conical. The growth kinetics of {100} faces of heterogeneous NH 4 Cl:Mn 2+ crystals is described within the Bliznakov model using the Fowler-Guggenheim adsorption isotherm, which takes into account the lateral interaction of adsorbed particles. Fig. 10. Increase in the (a) height and (b) width of a sharp vertex hillock with time.

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Ein Beitrag zur Kinetik der Fällungskristallisation

Cited by 16 publications

References 8 publications

Effect of impurities on density and viscosity of simulated wet-process phosphoric acid

Effect of impurities on density and viscosity of simulated wet-process phosphoric acid

Effect of Mixing Conditions in Barium Sulfate Precipitation

Growth kinetics and micromorphology of NH4Cl:Mn2+ crystals formed in the NH4Cl-MnCl2-H2O-CONH3 system

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