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学科主题: 物理化学
题名: Rational synthesis of Beta zeolite with improved quality by decreasing crystallization temperature in organotemplate-free route
作者: Zhang, Haiyan2;  Xie, Bin2;  Meng, Xiangju1;  Mueller, Ulrich3;  Yilmaz, Bilge4;  Feyen, Mathias3;  Maurer, Stefan3;  Gies, Hermann5;  Tatsumi, Takashi6;  Bao, Xinhe7;  Zhang, Weiping8;  De Vos, Dirk9;  Xiao, Feng-Shou1
通讯作者: Feng-Shou Xiao
关键词: Beta zeolite ;  Organotemplate-free synthesis ;  Seeds-directed synthesis ;  High crystallinity ;  Framework defects
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2013-11-01
DOI: 10.1016/j.micromeso.2013.06.031
卷: 180, 页:123-129
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: 5
项目归属: 502
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
资助者: 7,10
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Beta zeolite as efficient catalyst has been widely used in industrial processes, and its synthesis is normally performed in the presence of tetraethylammonium hydroxide as organic template. Recent works show successful organotemplate-free and seed-directed synthesis of Beta zeolite (Beta-SDS) in the presence of Beta seeds at 140 degrees C, providing a novel route for synthesizing low-cost zeolite catalysts. Notably, in the case for synthesizing Beta-SDS at 140 degrees C (Beta-SDS140), the use of seeds is still very high (8-10% in silica source) and impurity of MOR zeolite easily appears due to the fast crystallization rate. We demonstrate here a rational synthesis of Beta-SDS at 120 degrees C (Beta-SDS120) with pure BEA structure and improved zeolite quality in the presence of a very small amount of Beta seeds (as low as 1.4%) by decreasing zeolite crystallization rate. X-ray diffraction patterns show that calcination at 550 degrees C for 4 h results in the loss of crystallinity at 8.0% and 15.8% for Beta-SDS120 and Beta-SDS140, respectively, suggesting that Beta-SDS120 has higher thermal stability than Beta-SDS140. N-2 adsorption isotherms show that Beta-SDS120 has much higher surface area (655 m(2)/g) and micropore volume (0.25 cm(3)/g) than Beta-SDS140 (450 m(2)/g, 0.18 cm(3)/g). These phenomena are reasonably assigned to that Beta-SDS120 samples have much less framework defects such as terminal Si-OH groups than Beta-SDS140. The Beta-SDS120 samples with good crystallinity, high thermal stability, large surface area and pore volume offer a good opportunity for their industrial applications as efficient and low-cost catalytic and adsorptive materials. (c) 2013 Elsevier Inc. All rights reserved.
关键词[WOS]: TEMPLATE-FREE SYNTHESIS ;  MAS NMR ;  TSCHERNICHITE ;  ALKYLATION ;  RESOLUTION ;  CATALYSTS ;  TOPOLOGY ;  SYSTEMS ;  ANALOG ;  ECR-1
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000324659200017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119248
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Zhejiang Univ, Dept Chem, Key Lab Appl Chem Zhejiang Prov, Hangzhou 310028, Zhejiang, Peoples R China
2.Jilin Univ, Coll Chem, Changchun 130012, Peoples R China
3.BASF SE, Chem Res & Engn, D-67056 Ludwigshafen, Germany
4.BASF Corp, Chem Res & Engn, Iselin, NJ 08830 USA
5.Ruhr Univ Bochum, Inst Geol Mineral & Geophys, D-44780 Bochum, Germany
6.Tokyo Inst Technol, Chem Resources Lab, Yokohama, Kanagawa 227, Japan
7.Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian, Peoples R China
8.Dalian Univ Technol, State Key Lab Fine Chem, Dalian, Peoples R China
9.Katholieke Univ Leuven, Ctr Surface Chem & Catalysis, Louvain, Belgium

Recommended Citation:
Zhang, Haiyan,Xie, Bin,Meng, Xiangju,et al. Rational synthesis of Beta zeolite with improved quality by decreasing crystallization temperature in organotemplate-free route[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2013,180:123-129.
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