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Direct hydrothermal synthesis and characterization of framework-substituted Co(Mn)-Beta zeolites

Isomorphously substituted Co(Mn)-Beta zeolites were directly synthesized through a static hydrothermal approach. The silica-metal precursor was prepared by co-hydrolysis of tetraethylorthosilicate with cobalt or manganese nitrates in acidic media, which was adjusted to the strong basic condition by... Full description

Journal Title: Journal of Porous Materials 2013, Vol.20(4), pp.891-896
Main Author: Yao, Yue
Other Authors: Cao, Fangfang , Gu, Jing , Wu, Yajing , Zhou, Yu , Wang, Jun
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 1380-2224 ; E-ISSN: 1573-4854 ; DOI: 10.1007/s10934-012-9666-y
Link: http://dx.doi.org/10.1007/s10934-012-9666-y
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recordid: springer_jour10.1007/s10934-012-9666-y
title: Direct hydrothermal synthesis and characterization of framework-substituted Co(Mn)-Beta zeolites
format: Article
creator:
  • Yao, Yue
  • Cao, Fangfang
  • Gu, Jing
  • Wu, Yajing
  • Zhou, Yu
  • Wang, Jun
subjects:
  • Microporous materials
  • Zeolite
  • Hydrothermal synthesis
  • Crystal growth
  • Zeolite Beta
ispartof: Journal of Porous Materials, 2013, Vol.20(4), pp.891-896
description: Isomorphously substituted Co(Mn)-Beta zeolites were directly synthesized through a static hydrothermal approach. The silica-metal precursor was prepared by co-hydrolysis of tetraethylorthosilicate with cobalt or manganese nitrates in acidic media, which was adjusted to the strong basic condition by adding the structural directing agent (tetraethylammonium hydroxide) and Al source (sodium aluminate) for the subsequent hydrothermal crystallization. The products were characterized by X-ray diffraction, inductively coupling plasma elemental analysis, Brunauer–Emmett–Teller surface area, nitrogen sorption isotherm, FT-IR, UV–vis, and SEM. The results show that Co or Mn ions are incorporated into the framework of zeolite Beta, and the thus obtained Co(Mn)-Beta zeolites are nano-structured zeolite crystallites. The acidic co-hydrolysis/considention is proposed to facilitate the formation of metal-bearing nucleus for growing Co(Mn)-Beta crystals.
language: eng
source:
identifier: ISSN: 1380-2224 ; E-ISSN: 1573-4854 ; DOI: 10.1007/s10934-012-9666-y
fulltext: fulltext
issn:
  • 1573-4854
  • 15734854
  • 1380-2224
  • 13802224
url: Link


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titleDirect hydrothermal synthesis and characterization of framework-substituted Co(Mn)-Beta zeolites
creatorYao, Yue ; Cao, Fangfang ; Gu, Jing ; Wu, Yajing ; Zhou, Yu ; Wang, Jun
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subjectMicroporous materials ; Zeolite ; Hydrothermal synthesis ; Crystal growth ; Zeolite Beta
descriptionIsomorphously substituted Co(Mn)-Beta zeolites were directly synthesized through a static hydrothermal approach. The silica-metal precursor was prepared by co-hydrolysis of tetraethylorthosilicate with cobalt or manganese nitrates in acidic media, which was adjusted to the strong basic condition by adding the structural directing agent (tetraethylammonium hydroxide) and Al source (sodium aluminate) for the subsequent hydrothermal crystallization. The products were characterized by X-ray diffraction, inductively coupling plasma elemental analysis, Brunauer–Emmett–Teller surface area, nitrogen sorption isotherm, FT-IR, UV–vis, and SEM. The results show that Co or Mn ions are incorporated into the framework of zeolite Beta, and the thus obtained Co(Mn)-Beta zeolites are nano-structured zeolite crystallites. The acidic co-hydrolysis/considention is proposed to facilitate the formation of metal-bearing nucleus for growing Co(Mn)-Beta crystals.
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abstractIsomorphously substituted Co(Mn)-Beta zeolites were directly synthesized through a static hydrothermal approach. The silica-metal precursor was prepared by co-hydrolysis of tetraethylorthosilicate with cobalt or manganese nitrates in acidic media, which was adjusted to the strong basic condition by adding the structural directing agent (tetraethylammonium hydroxide) and Al source (sodium aluminate) for the subsequent hydrothermal crystallization. The products were characterized by X-ray diffraction, inductively coupling plasma elemental analysis, Brunauer–Emmett–Teller surface area, nitrogen sorption isotherm, FT-IR, UV–vis, and SEM. The results show that Co or Mn ions are incorporated into the framework of zeolite Beta, and the thus obtained Co(Mn)-Beta zeolites are nano-structured zeolite crystallites. The acidic co-hydrolysis/considention is proposed to facilitate the formation of metal-bearing nucleus for growing Co(Mn)-Beta crystals.
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doi10.1007/s10934-012-9666-y
pages891-896
date2013-08