News Help Institutional access
Back to results
Bibliographic record · Consultation and access
Artículo

Thermal and structural analysis of the reaction pathways of α-spodumene with NH4HF2

Resentera Beiza, Alexander Cristian Jesús et al · Elsevier Science · 2020

Open-access full text
Quick overview. Review the resource’s basic details, then access the content using the main button. This page shows only the information needed to identify, cite, and open the work.
Author / responsible party
Resentera Beiza, Alexander Cristian Jesús et al
Publisher
Elsevier Science
Year
2020
ISSN
0040-6031
ISSN
0040-6031
Language
English

Resource access

Open the content from the main option or choose another available source.

CONICET Digital CONICET Digital OAI-PMH
Entrar por CONICET Digital
Main access

Open-access full text

Texto completo identificado como acceso abierto.
Open text

Summary

Descripción general del contenido del recurso.

In this work, the thermal and microstructural analysis of the reaction pathways of α-spodumene with NH4HF2 at low temperatures is presented. The thermal behavior of NH4HF2, mixtures α-LiAlSi2O6/NH4HF2 and by-products (NH4)3SiF6·F/(NH4)2SiF6, are analyzed by simultaneous thermogravimetry and differential thermal analysis (TGDTA). The study of the crystallite size and lattice strain in the solids is carried out using X-ray diffraction (XRD). The obtained results indicate that the heating rate has a remarkable influence on the processes. At low heating rates, 1 K/min, the reaction between the mineral and NH4HF2 begins at about 351 K and is completed around 426 K, approximately. The obtained products are LiF, (NH4)3SiF6·F, (NH4)3AlF6, NH3 and H2O. In the 368–429 K temperature range, the unreacted NH4HF2 is removed and (NH4)3SiF6·F starts to decompose to generate (NH4)2SiF6. Finally, (NH4)2SiF6 and (NH4)3AlF6 sublimate and decompose at 433 and 493 K, respectively. The main final product is a LiF/AlF3 mixture at 533 K. Fil: Resentera Beiza, Alexander Cristian Jesús. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Basicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Basicas.; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina Fil: Rosales, Gustavo Daniel. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Basicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Basicas.; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina

How to cite

Elegí el formato que necesitás y copiá la referencia al portapapeles.

APA 7

Resentera Beiza, A. C. J. E. A. (2020). Thermal and structural analysis of the reaction pathways of α-spodumene with NH4HF2. http://hdl.handle.net/11336/113375

MLA

Resentera Beiza, Alexander Cristian Jesús et al. "Thermal and structural analysis of the reaction pathways of α-spodumene with NH4HF2." 2020. http://hdl.handle.net/11336/113375.

Chicago

Resentera Beiza, Alexander Cristian Jesús et al. 2020. "Thermal and structural analysis of the reaction pathways of α-spodumene with NH4HF2.". http://hdl.handle.net/11336/113375.

Harvard

Resentera Beiza, A. C. J. E. A. 2020, Thermal and structural analysis of the reaction pathways of α-spodumene with NH4HF2, Elsevier Science, available at: http://hdl.handle.net/11336/113375 [Accessed 7 Aug. 2026].

Share and print

Save the record, copy its permanent link, or print it as a PDF.

Export reference

You can export the record in common formats for use in a reference manager.

RIS BibTeX

Resource details

Bibliographic information to help confirm that this is the correct material.

Title
Thermal and structural analysis of the reaction pathways of α-spodumene with NH4HF2
Author / contributors
Resentera Beiza, Alexander Cristian Jesús et al
Publisher
Elsevier Science
Publication year
2020
ISSN
0040-6031
ISSN
0040-6031
Language
English

Subjects

Explore related resources through these subjects.

LITHIUM; NH4HF2; THERMAL ANALYSIS; XRD; Α-SPODUMENE; https://purl.org/becyt/ford/1.4; https://purl.org/becyt/ford/1
Copied