AFM observation of double 4-rings on zeolite LTA crystals surface

被引：73

作者：

Sugiyama, S

Yamamoto, S

Matsuoka, O

Nozoye, H

Yu, J

Zhu, G

Qiu, S

Terasaki, I

机构：

[1] Mitsui Chem Inc, Performance Mat R&D Ctr, Sakae Ku, Yokohama, Kanagawa 2478567, Japan

[2] Natl Inst Mat & Chem Res, Tsukuba, Ibaraki 3058565, Japan

[3] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[4] Tohoku Univ, Japan Sci & Technol Corp, CREST, Sendai, Miyagi 9808578, Japan

[5] Jilin Univ, Key Lab Inorgan Synth & Preparat Chem, Changchun 130023, Peoples R China

[6] Tohoku Univ, Interdisciplinary Res Ctr, Sendai, Miyagi 9808578, Japan

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 1999年 / 28卷 / 01期

关键词：

atomic force microscopy; crystal growth; double; 4-rings; Linde type A; morphology; surface structure; zeolite;

D O I：

10.1016/S1387-1811(98)00271-6

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Atomic force microscopy (AFM) revealed two features of the surface structure of Linde type A (LTA) crystals for the first time. The first is that LTA crystals contained fine pyramidal structures lying side-by-side. All of the pyramidal edges were parallel to the edges of the cubic single crystals. The second feature is that the sloped sides of each pyramid had fine steps of different heights (0.7, 0.5 and 1.2 nm). These three different heights correspond well to the sizes of a double 4-ring (D4R) and combinations of D4R, suggesting that D4R is the key building unit for crystal growth of LTA. These results demonstrate the potential of using AFM to reveal the fine surface structure. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：1 / 7

页数：7

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