Journal of Petrochemical Universities

Journal of Petrochemical Universities ›› 2008, Vol. 21 ›› Issue (1): 12-15.

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Synthesis and Characterization of BAPO-5 Molecular Sieves

FENG Li-li, ZHU Yue-lin, QI Xing-yi**, LI Zheng   

  1. School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, P.R.China
  • Received:2007-03-31 Published:2008-03-20 Online:2017-06-28

BAPO-5分子筛的合成与表征

冯利利, 朱岳麟, 齐兴义** , 李 征   

  1. 北京航空航天大学材料科学与工程学院,北京100083
  • 作者简介:冯利利(1980-),女,河南博爱县,在读博士。
  • 基金资助:
    国家自然科学基金资助项目(90305011)。

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Abstract:  

A series of boron aluminophosphate molecular sieves (BAPO-5) were synthesized by static hydrothermally method using the gel composition n(B2O3)/n(Al2O3)/ nP2O5)/ n(Et3N)/ n(H2O)=x∶y ∶1.5∶2∶240 . Based on the synthesized BAPO-5 molecular sieves, many of characterization was carried out by XRD, SEM, BET, FT-IR, MAS-NMR methods. It shows that the series of boron aluminophosphate molecular sieves with different boron contents are prepared in the[KG*4] range of 0＜ n(B2O3)/ n(Al2O3)＜0.08. And the crystal structure of BAPO-5 molecular sieves is attributed to the AFI structure type, which is the same as AlPO4-5. With the increase of the boron content, BET surface area and pore volume of BAPO-5 molecular sieves are also increased. This provides evidence of boron as heteroatom in the framework of BAPO-5 molecular sieves. It is observed that coordination environments of Al and P in the framework of BAPO-5 are AlO4 and PO4. Therefore, AlPO4-5 framework-incorporated B atoms brings no change of coordination environments of Al and P and structure type of BAPO-5 molecular sieves. In addition, SEM images show that the synthesized BAPO-5 molecular sieves have a regular hexagonal prism morphology. 

Key words: Boron   , Heteroatom    ,  Aluminophospate molecular sieves

摘要： 采用静态水热合成法,活性胶液中各组分摩尔比为n(B2O3)/n(Al2O3)/n(P2O 5)/n(模板剂)/n
(H2O)=x∶y∶1.5∶2∶240合成了系列硼铝磷酸盐分子筛BAPO-5。利用XRD,SEM,BET,FT-IR和MASNMR
等方法对BAPO-5分子筛进行了多角度表征。结果表明,当活性胶液中0<n(B2O3)/n(Al2O3)<0.08时,
可合成出不同硼含量的BAPO-5,BAPO-5与未添加杂原子B的AlPO4-5具有相同的晶体结构;BAPO-5的比
表面积和比孔容均随B含量的增加而增大,表明BAPO-5中的硼为分子筛的骨架阳离子元素;BAPO-5骨架中的
Al和P的配位环境为AlO4 和PO 4,杂原子B的引入并未引起分子筛的骨架阳离子元素Al和P的配位环境和结构
类型的改变;此外,合成的BAPO-5具有规整的六方棱柱晶体外形。

关键词: 硼  ,  , 杂原子  ,   , 铝磷酸盐分子筛

Cite this article

FENG Li-li, ZHU Yue-lin, QI Xing-yi*, LI Zheng. Synthesis and Characterization of BAPO-5 Molecular Sieves[J]. Journal of Petrochemical Universities, 2008, 21(1): 12-15.

冯利利, 朱岳麟, 齐兴义*,李 征. BAPO-5分子筛的合成与表征[J]. 石油化工高等学校学报, 2008, 21(1): 12-15.

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