【作者】 徐烨明； 于然波； 邢献然； 王丹；

【Author】 Xu Yeming, Yu Ranbo, Xing Xianran, Wang Dan (Department of Physical Chemistry, University of Science & Technology Beijing, Beijing 100083, China; Multiphase Reaction Lab,Institute of Process Engineering Chinese Academy of Sciences, Beijing 100080, China)

【机构】 北京科技大学物理化学系； 中国科学院过程工程研究所多相反应重点实验室；

【摘要】 采用水热合成方法,以硫酸铈为铈源,吡啶作为有机模板剂,硫酸和磷酸同时存在的条件下,在140℃晶化4 d制备出一种无色双棱锥状晶体。对获得的结晶性产物以XRD,SEM,TG-DSC,FT-IR,EDS,UV-Vis等手段进行了表征。结果表明,该化合物为新型的有机模板硫酸铈,晶体属正交晶系,晶胞参数为a=0．68025 nm,b=0．84725 nm,c=1．71921 nm;晶体尺寸为150-300 μm。此外, 该化合物在700℃以下表现了良好的热稳定性。更多还原

【Abstract】 A colorless bi-pyramid crystal was synthesized by hydrothermal technology. The starting composition was as follows: CeSO4·4H2O as the cerium resource; pyridine as the organic template; H3PO4, H2SO4, and deionized water. This mixture was sealed in Teflon-lined stainless steel autoclaves and heated at 140℃ for 4 d. The crystalline product was characterized by means of XRD, SEM, TG-DSC, FT-IR, EDS, UV-Vis etc. The results show that the compound is a novel organically templated cerium sulfate. Its structure belongs to the orthorhombic system, with lattice parameters of a=0 .68025 , b= 0.84725 , c=1.71921 nm; the crystal size is 150-300 μm. Additionally, it shows a high thermal stability up to 700℃.更多还原