铝离子在beta沸石晶化过程中对多形体A富集的影响

引用本文: 鲁婷婷, 高攀, 徐君, 王永睿, 闫文付, 于吉红, 邓风, 慕旭宏, 徐如人. 铝离子在beta沸石晶化过程中对多形体A富集的影响[J]. 催化学报, 2015, 36(6): 889-896. doi: 10.1016/S1872-2067(14)60300-4 shu

Citation: Tingting Lu, Pan Gao, Jun Xu, Yongrui Wang, Wenfu Yan, Jihong Yu, Feng Deng, Xuhong Mu, Ruren Xu. Influence of Al³⁺ on polymorph A enrichment in the crystallization of beta zeolite[J]. Chinese Journal of Catalysis, 2015, 36(6): 889-896. doi: 10.1016/S1872-2067(14)60300-4 shu

铝离子在beta沸石晶化过程中对多形体A富集的影响

鲁婷婷 ^a, ,
高攀 ^b, ,
徐君 ^b, ,
王永睿 ^c, ,
闫文付 ^{a,
,} ,
于吉红 ^a, ,
邓风 ^b, ,
慕旭宏 ^c, ,
徐如人 ^a,

通讯作者: 闫文付,电话/传真: (0431)85168609; 电子信箱: yanw@jlu.edu.cn

基金项目:
国家自然科学基金(21171063) (21171063)

优秀青年科学基金(21222103) (21222103)

国家重点基础研究发展计划(2011CB808703) (2011CB808703)

石油化工催化材料与反应工程国家重点实验室(中国石化石油化工科学研究院)开放课题基金 (中国石化石油化工科学研究院)

长江学者和创新团队发展计划(IRT101713018). (IRT101713018)

摘要: 以四乙基氢氧化铵为有机结构导向剂, 采用超浓水热方法, 从氟离子体系合成出手性多形体A(简称A形体)富集的全硅beta沸石. 在同样的初始混合物中引入铝源后, 所合成的beta沸石中A形体含量明显降低, 产物为普通的硅铝beta沸石. 用粉末X射线衍射、元素分析、热重-差热分析、氮气吸附、扫描电子显微镜和固体魔角自旋核磁共振等表征手段对全硅beta沸石和硅铝beta沸石进行了详细的表征, 并研究了其晶化过程. 结果表明, 铝源的引入可以加速beta沸石的晶化, 得到的硅铝beta沸石晶体粒径明显减小. 在硅铝beta沸石的晶化过程中生成了五配位铝物种, 五配位铝物种可能是导致产物中A形体含量降低的原因.

关键词:

beta沸石
/ 手性
/ A形体
/ 富集

English

Influence of Al³⁺ on polymorph A enrichment in the crystallization of beta zeolite

Tingting Lu ^a, ,
Pan Gao ^b, ,
Jun Xu ^b, ,
Yongrui Wang ^c, ,
Wenfu Yan ^{a,
,} ,
Jihong Yu ^a, ,
Feng Deng ^b, ,
Xuhong Mu ^c, ,
Ruren Xu ^a,

1.
a State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, Jilin, China;

Corresponding author: 闫文付,电话/传真: (0431)85168609; 电子信箱: yanw@jlu.edu.cn

Received Date: 25 December 2014
Available Online: 20 June 2015
Fund Project:
国家自然科学基金(21171063)

优秀青年科学基金(21222103)

国家重点基础研究发展计划(2011CB808703)

石油化工催化材料与反应工程国家重点实验室(中国石化石油化工科学研究院)开放课题基金

长江学者和创新团队发展计划(IRT101713018).

Abstract: Using tetraethylammonium hydroxide as the organic structure-directing agent and in the presence of fluoride, polymorph A-enriched silica beta zeolite was synthesized under concentrated hydrothermal conditions. The introduction of Al species into the same starting mixture resulted in a decrease in the degree of enrichment of polymorph A in beta zeolite and an Al-incorporated beta zeolite resulted. The crystallized polymorph A-enriched silica beta zeolite and the Al-incorporated beta zeolite and their crystallization processes were investigated by X-ray diffractometry, elemental analysis, thermogravimetric analysis-differential thermal analysis, nitrogen adsorption, scanning electron microscopy, and solid-state magic angle spinning nuclear magnetic resonance. The introduction of Al species accelerated crystallization and reduced the crystal size of Al-incorporated beta zeolite. The intermediate of five-coordinated Al species accounted for a decrease in the degree of enrichment of polymorph A in the crystallization of Al-incorporated beta zeolite.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

铝离子在beta沸石晶化过程中对多形体A富集的影响

通讯作者: 闫文付,电话/传真: (0431)85168609; 电子信箱: yanw@jlu.edu.cn

English

Influence of Al³⁺ on polymorph A enrichment in the crystallization of beta zeolite

Corresponding author: 闫文付,电话/传真: (0431)85168609; 电子信箱: yanw@jlu.edu.cn

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铝离子在beta沸石晶化过程中对多形体A富集的影响

通讯作者: 闫文付,电话/传真: (0431)85168609; 电子信箱: yanw@jlu.edu.cn

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Corresponding author: 闫文付,电话/传真: (0431)85168609; 电子信箱: yanw@jlu.edu.cn

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Influence of Al³⁺ on polymorph A enrichment in the crystallization of beta zeolite

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