Crystallization and Quantification of Crystalline and Non-Crystalline Phases in Kaolin-Based Cordierites

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F19%3A10242534" target="_blank" >RIV/61989100:27360/19:10242534 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27710/19:10242534

Result on the web

<a href="https://www.mdpi.com/1996-1944/12/19/3104" target="_blank" >https://www.mdpi.com/1996-1944/12/19/3104</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma12193104" target="_blank" >10.3390/ma12193104</a>

Result language

angličtina

Original language name

Crystallization and Quantification of Crystalline and Non-Crystalline Phases in Kaolin-Based Cordierites

Original language description

Kaolin is most often used as traditional raw material in ceramic industry. The purpose of the study was to obtain understanding of the structural and chemical variability of cordierite ceramics influenced by chemical and mineralogical properties of six raw kaolins taken from dierent localities when they are applied in ceramics mixtures with vermiculite and sintered up to 1300 C. The X-ray diraction and simultaneous thermogravimetric and dierential thermal analysis were used to identify and characterize crystalline mineral phases and the course of reactions during the heating. The percentages of the crystalline and non-crystalline phases were newly determined by recalculation of the bulk chemical analyses of kaolins and cordierite ceramics using Chemical Quantitative Mineral Analysis (CQMA) method. Varying amounts of minerals in kaolins: kaolinite from 73.3 to 85.0, muscovite from 4.2 to 9.9, and quartz from 6.0 to 19.5 (mass %) aected amount of cordierite/indialite from 75.2 to 85.1, enstatite from 5.8 to 8.9 (when are calculated as their maximal possible percentages), and non-crystalline phases from 8.8 to 15.1 (mass %) in cordierite ceramics. Regression analysis predicted high relationship between quantity of: (a) kaolinite in kaolins and crystalline cordierite and (b) quartz in kaolins and non-crystalline phases in the ceramics. The migration of potassium from muscovite into the cordierite structure, melting point and crystallization of cordierite/indialite phases and pore size variability in relation to impurity of kaolins are documented and discussed.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10406 - Analytical chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Materials

ISSN

1996-1944

e-ISSN

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Volume of the periodical

12

Issue of the periodical within the volume

19

Country of publishing house

CH - SWITZERLAND

Number of pages

13

Pages from-to

1-13

UT code for WoS article

000493308500053

EID of the result in the Scopus database

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