Abstract

Crystallization of molecular sieves SAPO-41 from gels containing layered 2D silicoaluminophosphates with various SiO₂/Al₂O₃ molar ratios (from 0.1 to 0.3) was studied using X-ray photoelectron spectroscopy (XPS), X-ray fluorescence analysis (XRF), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), N₂ adsorption–desorption, and IR spectroscopy with pyridine adsorption. The effect of the presence of layered phases in gels on the chemical and phase compositions, acid properties, and porous structure characteristics of their crystallization products was established. A procedure for the synthesis of SAPO-41 of high phase purity and degree of crystallinity was proposed. The catalytic properties of Pt-containing catalytic systems prepared on the basis of the obtained molecular sieves in the hydroisomerization of n-hexadecane were studied.

中文翻译：

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不同SiO2/Al2O3比的层状二维硅铝磷酸盐凝胶制备分子筛的性能研究

摘要

_{使用 X 射线光电子能谱 (XPS)、X 射线荧光分析 (XRF) 研究了分子筛 SAPO-41 从含有不同 SiO 2} /Al ₂ O ₃摩尔比（0.1 至 0.3）的层状2D 硅铝磷酸盐的凝胶中的结晶。, 拉曼光谱, 扫描电子显微镜 (SEM), 透射电子显微镜 (TEM), N ₂吸附-解吸和吡啶吸附红外光谱。确定了凝胶中层状相的存在对其结晶产物的化学和相组成、酸性质和多孔结构特征的影响。提出了高相纯度和结晶度的 SAPO-41 的合成方法。研究了基于所得分子筛制备的含Pt催化体系在正十六烷加氢异构化中的催化性能。