中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
学科主题: 物理化学
题名: Investigation of the Crystallization Process of SAPO-35 and Si Distribution in the Crystals
作者: Tian, Peng1;  Li, Bing1, 2;  Xu, Shutao1;  Su, Xiong1, 2;  Wang, Dehua1, 2;  Zhang, Lin1;  Fan, Dong1, 2;  Qi, Yue1;  Liu, Zhongmin1
通讯作者: 刘中民
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2013-02-28
DOI: 10.1021/jp311334q
卷: 117, 期:8, 页:4048-4056
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: DNL12
项目归属: DNL1202
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
资助者: 1,1
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: The hydrothermal crystallization of SAPO-35 molecular sieve is examined in the present study. Many characterization methods including XRD, SEM, XRF, XPS, EDS, and various solid-state NMR techniques are applied to monitor the formation process of SAPO-35 and the development of the local environments of Si, P, and Al atoms as a function of crystallization time. The results show that an intermediate phase with ordered structure and AlPO compositions first forms. Subsequently, SAPO-35 crystallizes at the expense of the intermediate phase. Si takes part in the formation of SAPO-35 since the initial crystallization. The Si concentration in SAPO-35 shows an increasing trend with time, which leads to the change of both Si and Al coordination environments. More information is obtained from two-dimensional Al-27 MQ MAS and Al-27 -> P-31 MQ-MAS HETCOR NMR. Moreover, XPS analysis reveals the enrichment of Si on the crystal surface. On the basis of the characterization results, it is supposed that the distribution of Si in the SAPO-35 crystals is not uniform, showing a gradual increase from the core to the external surface.
关键词[WOS]: SOLID-STATE NMR ;  SILICOALUMINOPHOSPHATE MOLECULAR-SIEVES ;  MICROPOROUS ALUMINOPHOSPHATE ALPO4-11 ;  DIFFERENT FRAMEWORK TOPOLOGIES ;  DRY-GEL CONVERSION ;  ANGLE-SPINNING NMR ;  INORGANIC SOLIDS ;  SPECTROSCOPY ;  ZEOLITES ;  KINETICS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000318211800041
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119420
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
2013MSa9yY1uhE.PDF(1247KB)----开放获取View Download

作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Natl Engn Lab Methanol Olefins, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Tian, Peng,Li, Bing,Xu, Shutao,et al. Investigation of the Crystallization Process of SAPO-35 and Si Distribution in the Crystals[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2013,117(8):4048-4056.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Tian, Peng]'s Articles
 [Li, Bing]'s Articles
 [Xu, Shutao]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Tian, Peng]‘s Articles
 [Li, Bing]‘s Articles
 [Xu, Shutao]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
文件名: 2013MSa9yY1uhE.PDF
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace