Effects of Si/Al Ratios on the Bulk-Type Zeolite Formation Using Synthetic Metakaolin-Based Geopolymer with Designated Composition

In this paper, synthetic metakaolin with fixed composition (Al2O3·2SiO2) was produced by a simple chemosynthetic route. The chemosynthetic metakaolin can eliminate the influence of impurities in metakaolin from natural kaolin miner...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Guoru Ma, Chengying Bai, Meirong Wang, Peigang He
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	geopolymer zeolite hydrothermal treatment metakaolin geopolymer composites Crystallography QD901-999
Acceso en línea:	https://doaj.org/article/2bbd9c6120734fd79bb0c811512145ed
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:2bbd9c6120734fd79bb0c811512145ed
record_format	dspace
spelling	oai:doaj.org-article:2bbd9c6120734fd79bb0c811512145ed2021-11-25T17:18:03ZEffects of Si/Al Ratios on the Bulk-Type Zeolite Formation Using Synthetic Metakaolin-Based Geopolymer with Designated Composition10.3390/cryst111113102073-4352https://doaj.org/article/2bbd9c6120734fd79bb0c811512145ed2021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4352/11/11/1310https://doaj.org/toc/2073-4352In this paper, synthetic metakaolin with fixed composition (Al<sub>2</sub>O<sub>3</sub>·2SiO<sub>2</sub>) was produced by a simple chemosynthetic route. The chemosynthetic metakaolin can eliminate the influence of impurities in metakaolin from natural kaolin minerals. The synthetic metakaolin together with NaOH and SiO<sub>2</sub>-sol were used to prepare Na-based geopolymer precursors with various molar ratios of Si/Al. The molar ratios of Si/Al from 1 to 2 were tailored by adding different contents of SiO<sub>2</sub>-sol. Zeolite/geopolymer composites or monolith-type zeolite were successfully fabricated from synthetic metakaolin-based geopolymer through a hydrothermal process. The effects of Si/Al ratios on the phase composition and microstructure of the produced zeolite/geopolymer composites or zeolites were studied. The results proved that the composition of synthetic metakaolin and geopolymer precursors can be facilely tuned, and the monolithic geopolymer precursors can be mostly, or even totally, transformed into zeolite after hydrothermal treatment.Guoru MaChengying BaiMeirong WangPeigang HeMDPI AGarticlegeopolymerzeolitehydrothermal treatmentmetakaolingeopolymer compositesCrystallographyQD901-999ENCrystals, Vol 11, Iss 1310, p 1310 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	geopolymer zeolite hydrothermal treatment metakaolin geopolymer composites Crystallography QD901-999
spellingShingle	geopolymer zeolite hydrothermal treatment metakaolin geopolymer composites Crystallography QD901-999 Guoru Ma Chengying Bai Meirong Wang Peigang He Effects of Si/Al Ratios on the Bulk-Type Zeolite Formation Using Synthetic Metakaolin-Based Geopolymer with Designated Composition
description	In this paper, synthetic metakaolin with fixed composition (Al<sub>2</sub>O<sub>3</sub>·2SiO<sub>2</sub>) was produced by a simple chemosynthetic route. The chemosynthetic metakaolin can eliminate the influence of impurities in metakaolin from natural kaolin minerals. The synthetic metakaolin together with NaOH and SiO<sub>2</sub>-sol were used to prepare Na-based geopolymer precursors with various molar ratios of Si/Al. The molar ratios of Si/Al from 1 to 2 were tailored by adding different contents of SiO<sub>2</sub>-sol. Zeolite/geopolymer composites or monolith-type zeolite were successfully fabricated from synthetic metakaolin-based geopolymer through a hydrothermal process. The effects of Si/Al ratios on the phase composition and microstructure of the produced zeolite/geopolymer composites or zeolites were studied. The results proved that the composition of synthetic metakaolin and geopolymer precursors can be facilely tuned, and the monolithic geopolymer precursors can be mostly, or even totally, transformed into zeolite after hydrothermal treatment.
format	article
author	Guoru Ma Chengying Bai Meirong Wang Peigang He
author_facet	Guoru Ma Chengying Bai Meirong Wang Peigang He
author_sort	Guoru Ma
title	Effects of Si/Al Ratios on the Bulk-Type Zeolite Formation Using Synthetic Metakaolin-Based Geopolymer with Designated Composition
title_short	Effects of Si/Al Ratios on the Bulk-Type Zeolite Formation Using Synthetic Metakaolin-Based Geopolymer with Designated Composition
title_full	Effects of Si/Al Ratios on the Bulk-Type Zeolite Formation Using Synthetic Metakaolin-Based Geopolymer with Designated Composition
title_fullStr	Effects of Si/Al Ratios on the Bulk-Type Zeolite Formation Using Synthetic Metakaolin-Based Geopolymer with Designated Composition
title_full_unstemmed	Effects of Si/Al Ratios on the Bulk-Type Zeolite Formation Using Synthetic Metakaolin-Based Geopolymer with Designated Composition
title_sort	effects of si/al ratios on the bulk-type zeolite formation using synthetic metakaolin-based geopolymer with designated composition
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2bbd9c6120734fd79bb0c811512145ed
work_keys_str_mv	AT guoruma effectsofsialratiosonthebulktypezeoliteformationusingsyntheticmetakaolinbasedgeopolymerwithdesignatedcomposition AT chengyingbai effectsofsialratiosonthebulktypezeoliteformationusingsyntheticmetakaolinbasedgeopolymerwithdesignatedcomposition AT meirongwang effectsofsialratiosonthebulktypezeoliteformationusingsyntheticmetakaolinbasedgeopolymerwithdesignatedcomposition AT peiganghe effectsofsialratiosonthebulktypezeoliteformationusingsyntheticmetakaolinbasedgeopolymerwithdesignatedcomposition
_version_	1718412520103870464

Effects of Si/Al Ratios on the Bulk-Type Zeolite Formation Using Synthetic Metakaolin-Based Geopolymer with Designated Composition

Ejemplares similares