Naturaleza Y Formación De Los Complejos Intermedios Del Sistema ...

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Is Open AccessNaturaleza y formación de los complejos intermedios del sistema SnCl2 - NH4OH - H2Oresearch-article Author(s): A. Ortiz , M. Mendoza , J.E. Rodríguez Paez Publication date (Print and electronic): October 2001 Journal: Materials Research Publisher: ABM, ABC, ABPol Keywords: tin oxide, synthesis, controlled precipitation, intermediate complexes

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Current technological advances require that the raw materials used in the production of electric devices and structural materials present special characteristics of chemical purity, size distribution and morphology of the particles. Tin oxides are mainly used as gas sensor and as surges suppressor (varistor). To achieve an appropriate control on the mentioned characteristics, we use the method of controlled precipitation (MPC), which allowed us to obtain certain characteristics in other oxides. When using the MPC, it is necessary to determine the complexes that are formed and their nature. In this work we present results of study on the formation of complexes in the system SnCl2 - NH4OH - H2O. To study the system during the constant addition of the base (NH4OH) to the solution of tin salt, we used potentiometric and conductimetric titration. For the determination of the nature of the formed tin complexes, the solid phase was characterized using X-ray diffraction (XRD) while the liquid phase was analyzed by UV-visible and infrared spectroscopies.

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The Infrared Spectra of Minerals

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Infrared characteristic group frequencies

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Aquatic chemistry

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Journal

Journal ID (publisher-id): mr Title: Materials Research Abbreviated Title: Mat. Res. Publisher: ABM, ABC, ABPol (São Carlos, , Brazil ) ISSN (Print): 1516-1439 ISSN (Electronic): 1980-5373 Publication date (Print and electronic): October 2001 Volume: 4 Issue: 4 Pages: 266-272

Affiliations

[01] orgnameUniversidad del Cauca orgdiv1Departamento de Química [02] Popayán - Cauca orgnameUniversidad del Cauca orgdiv1Departamento de Física orgdiv2Grupo CYTEMA Colombia jnpaez@ 123456ucauca.edu.co

Article

Publisher ID: S1516-14392001000400008 Publisher ID: S1516-1439(01)00400408 DOI: 10.1590/S1516-14392001000400008SO-VID: 03208b74-d468-4418-b2de-574a0a243976 License:

This work is licensed under a Creative Commons Attribution 4.0 International License.

History

Date received : 01 January 2001 Date revision received : 01 September 2001

Page count

Figures: 0, Tables: 0, Equations: 0, References: 20, Pages: 7

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Keywords: tin oxide,synthesis,controlled precipitation,intermediate complexesData availability: Keywords: tin oxide, synthesis, controlled precipitation, intermediate complexes

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