Abstract

This study investigates, for the first time, the effects of steam heating of hierarchical porous-structured granular Y zeolite samples and of their subsequent treatment with aqueous nitric and citric acid solutions on the acid properties and porous structure characteristics of the samples. It was demonstrated that acid treatment of a sample not subjected to preliminary steam heating stabilization leads to its decationation, dealumination, and partial amorphization of its crystal lattice. In contrast, acid treatment of a steam-stabilized sample was found to mitigate the lattice destruction.

中文翻译：

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通过蒸汽加热和酸处理改性高结晶度Y型沸石的理化性质

摘要

这项研究首次调查了分层多孔结构的粒状Y沸石样品的蒸汽加热及其随后用硝酸和柠檬酸水溶液处理对样品酸性质和多孔结构特征的影响。结果表明，对未经初步蒸汽加热稳定处理的样品进行酸处理会导致其发生阳离子化，脱铝和晶格部分非晶化。相反，发现对蒸汽稳定的样品进行酸处理可减轻晶格破坏。