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本文采用La(NO_3)_3·6H_2O与HZSM-5分子筛相混合研磨,并在不同时间,不同温度(低于La(NO_3)_3·6H_2O的分解温度393K)下,加热。用X射线晶体衍射,X射线光电子能谱检测其分散情况。实验证明,La(NO_3)_3能够以单层形式分散在HZSM-5表面上。
In this paper, La (NO_3) _3 · 6H_2O was mixed with HZSM-5 molecular sieve and ground at different temperatures and temperatures (lower than the decomposition temperature of La (NO_3) _3 · 6H_2O 393K). X-ray crystal diffraction and X-ray photoelectron spectroscopy were used to detect the dispersion. Experiments show that La (NO_3) _3 can be dispersed as a monolayer on the surface of HZSM-5.