SOLID-STATE ION-EXCHANGE IN ZEOLITES .6. SYSTEM LACL3/NAY ZEOLITE

被引：15
|
作者：
KARGE, HG [1 ]
PALBORBELY, G [1 ]
BEYER, HK [1 ]
机构：
[1] HUNGARIAN ACAD SCI,CENT RES INST CHEM,BUDAPEST,HUNGARY
来源：
ZEOLITES | 1994年 / 14卷 / 07期
关键词：
SOLID-STATE ION EXCHANGE; LA; NAY ZEOLITE; X-RAY DIFFRACTION; MAS NMR; INFRARED SPECTROSCOPY; CATALYSIS OF ETHYLBENZENE DISPROPORTIONATION;
D O I：
10.1016/0144-2449(94)90183-X
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
La,NaY zeolite (I) is prepared by contact-induced ion exchange between solid LaCl3.7 H2O and NaY zeolite powder. La,NaY (I) is investigated by X-ray diffraction, Al-27 MAS n.m.r., Si-29 MAS n.m.r., Na-23 MAS n.m.r., and i.r. spectroscopy after various treatments. Results are compared with those obtained employing a conventionally exchanged La,NaY sample (76). It is shown that the behavior of La,NaY zeolites obtained via either route are very similar except for a somewhat lower thermal stability of the La,NaY (I) after heat-treatment at high temperature (850 K), treatment with water, and repeated high-temperature treatment. The catalytic performance of La,NaY (I) and La,Nay (74) is almost identical when tested for acid-catalyzed selective disproportionation of ethylbenzene.
引用
收藏
页码：512 / 518
页数：7
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