Changes of Crystallinity During Dealumination of NaY Zeolite by Oxalic Acid

被引：0

作者：

草酸脱铝NaY分子筛结晶度的变化规律

机构：

[1] Wang, Zijian

[2] Fu, Qiang

[3] Zhang, Chengxi

[4] Li, Yongxiang

来源：

Li, Yongxiang (liyx.ripp@sinopec.com) | 2018年 / Science Press卷 / 34期

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D O I：

10.3969/j.issn.1001-8719.2018.04.002

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学科分类号：

摘要：

Herein, Detailed studies on the laws of crystallinity change of NaY zeolite upon acid treatment are demonstrated. Oxalic acid was used to modify NaY zeolite under different treatment conditions, including acid concentration, treatment temperature, treatment time and the liquid/solid ratio. XRD, XRF, 29Si MAS NMR and 27Al MAS NMR were adopted to characterize the structure and component of samples. The change of crystallinity of NaY zeolite along with acid treatment conditions was summarized, and recommendatory acid treatment conditions were concluded. It is found that prolonging treatment time and increasing the liquid/solid ratio is helpful to maintain relatively high crystallinity, but of no influence on the extent of dealumination. © 2018, Editorial Office of Acta Petrolei Sinica(Petroleum Processing Section). All right reserved.

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