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题名: UV Raman spectroscopic study on the crystallization of microporous boron-aluminum crystalline BAC(10)
作者: Yu, Y;  Yu, JH;  Xiong, G;  Li, C;  Xiao, FS
刊名: PHYSICAL CHEMISTRY CHEMICAL PHYSICS
发表日期: 2001
卷: 3, 期:13, 页:2692-2696
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Chemistry ;  Physics
英文摘要: Boron aluminum oxo chloride [BAC(10)], a microporous material, and its crystallization were investigated by X-ray diffraction (XRD), adsorption isotherms of probing molecules, infrared (IR), magic-angle spinning nuclear magnetic resonance (MAS NMR), visible Raman and ultraviolet (UV) Raman spectroscopy. XRD and adsorption isotherms indicate that BAC(10) consists of novel microporous crystals, and IR and NMR results confirmed that the primary building units are triangular BO3, tetrahedral BO4 and octahedral AlO6. No Raman signal in the visible Raman spectrum of BAC(10) was detected owing to the weakness of Raman scattering and strong fluorescence interference. However, strong Raman bands of this material were observed in the UV Raman spectra owing to the avoidance of fluorescence. The UV Raman spectra show that, during the crystallization process, the number of BO3 groups (bands at 300-700 cm(-1)) decrease with increasing number of BO4 groups (bands at 900-1000 cm(-1)) in the solid phase. These results suggest that in the crystallization of BAC(10), the polyborate anions are quickly depolymerized to monoborate species including BO3 and BO4 groups, which are then gradually crystallized to the framework of microporous BAC(10).
关键词[WOS]: COKE FORMATION ;  GAMMA-ALUMINA ;  ZEOLITE-Y ;  RESONANCE ;  OXOCHLORIDE ;  FRAMEWORK ;  CATALYSTS ;  MOLYBDATE ;  CHLORIDE
语种: 英语
WOS记录号: WOS:000169525300024
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139016
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.Jilin Univ, Dept Chem, Changchun 130023, Peoples R China
2.Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130023, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Yu, Y,Yu, JH,Xiong, G,et al. UV Raman spectroscopic study on the crystallization of microporous boron-aluminum crystalline BAC(10)[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2001,3(13):2692-2696.
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