含杂原子分子筛B-Al-EU-1的快速合成和表征

 在HMBr2-Na2O-Al2O3-SiO2-H3BO3-H2O体系中，采用固相法快速合成了高结晶度的硼硅铝分子筛B-Al-EU-1, 合成时间由水热法的168 h缩短至48 h。采用XRD、XPS、TG-DTG和FT-IR等手段，对合成的B-Al-EU-1分子筛进行了表征。结果表明，随着B的加入，B-Al-EU-1分子筛中晶胞体积收缩，FT-IR骨架振动频率向高波数方向移动，在约906 cm-1处出现Si-O-B对称伸缩振动谱带；B-Al-EU-1分子筛中B1s电子结合能与偏硼酸HBO2中B1s的电子结合能非常接近，表明B原子进入分子筛骨架，并且以四配位方式存在。与水热体系合成的同种分子筛相比，固相法合成的B-Al-EU-1分子筛的晶胞体积明显变小。

RAPID SYNTHESIS AND CHARACTERIZATION OF HETEROATOMIC ZEOLITE B-Al-EU-1

B-Al-EU-1 zeolite was synthesized in HMBr2-Na2O-Al2O3-SiO2-H3BO3-H2O system by solid phase transformation with the crystallization time of 48 h, which was greatly shorter than the crystallization time of 168 h in preparation of the sample by hydrothermal method. The prepared B-Al-EU-1 samples were characterized by XRD, FT-IR, TG-DTG and XPS techniques. The results showed that with the addition of B, the unit cell volume of B-Al-EU-1 prepared by solid phase transformation shrank and the vibration band of its framework shifted to higher wave number and the symmetric stretching band of Si-O-B appeared at about 906 cm-1 in FT-IR spectrum, and the bonding energy of B1s in B-Al-EU-1 was similar to that in HBO2, indicating that B atoms substituted the Al atoms in the framework with a tetrahedral coordination. The unit cell volume of B-Al-EU-1 prepared by solid phase transformation was obviously smaller than that prepared by hydrothermal method.