The effects of seeding in the synthesis of zeolite ZSM-48 in the presence of tetramethylammonium ion

被引：34
|
作者：
Suzuki, K [1 ]
Hayakawa, T [1 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, Adv Mfg Res Inst, Tsukuba, Ibaraki 3058565, Japan
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2005年 / 77卷 / 2-3期
关键词：
ZSM-48; seed; synthesis; tetramethylammonium; ZSM-39;
D O I：
10.1016/j.micromeso.2004.08.022
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The hydrothermal synthesis of ZSM-48 has been investigated using tetramethylammonium (TMA) ion with and without addition of ZSM-48 seeds. Without addition of seed crystals, main product was ZSM-39. Only cristobalite was formed without addition of TMA in the seeded system. Hence, addition of both seeds and TMA ions is essential to obtain the well-crystallized ZSM-48 samples The morphology of resultant ZSM-48 crystals in the seeded system was hexagonal rod. It was suggested that the ZSM-48 seeds would accelerate the crystallization of ZSM-48 zeolite and avoid the formation of ZPA-39. TMA might assist the growing process of ZSM-48 over seed crystals and stabilize the ZSM-48 structure. (C) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码：131 / 137
页数：7
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