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Ca4(SiO4)(SO4)Cl2的制造及特性
PREPARATION AND PROPERTIES OF Ca4(SiO4)(SO4)CI2
【摘要】 <正> 一、引言 近年来,在CaO-SiO2-CaCl2系统的研究中,中国和德意志民主共和国在同一时期各自独立地进行了多种实验并取得了类同的结果。最近,我们在工作中又取得了新的成果,今作如下介绍。 据我们所知,文献只报道了一种具有磷灰石结构的氯硫硅酸钙Ca10(SiO4)3(SO4)3·Cl2。我们进行过下述实验:对Belinit中的Ca8Mg(SiO4)4Cl2,以硫酸盐和硫化
【Abstract】 A new calcium silicate sulfate chloride Ca4(SiO4)(SO4)Cl2 has been synthesized at 800℃ in a CaCl2 flux using calcium carbonate, silica and calcium sulfate. From the X-ray diffraction photographs a structure very similar to calcium chlorospodiosite Ca4(PO4)(PO4)Cl2 is deduced, orthorhombic, a=6.28(?), b=7.00(?), c=10.90(?). The 2(?)Si NMR MAS spectrum suggests random alternation of SiO44- and SO42- tetrahedra. Ca4(SiO4)(SO4)Cl2 is hydraulically active. The main advantage of a hydraulic binder on the basis of this compound is preparated at very low temperature(800℃) and the possibility of industrial wastes utilization.
- 【文献出处】 硅酸盐学报 ,Journal of The Chinese Ceramic Society , 编辑部邮箱 ,1988年05期
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