Symmetric twisted carbon filaments formed from butadiene-1,3 on Ni-Cu/MgO-catalyst: growth regularities and mechanism

被引：33

作者：

Chesnokov, VV ^{[1
]}

Zaikovskii, VI ^{[1
]}

Buyanov, RA ^{[1
]}

机构：

[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2000年 / 158卷 / 01期

关键词：

carbon; filament; nickel; copper; alloy;

D O I：

10.1016/S1381-1169(00)00088-1

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：

High-resolution electron microscopy has been used to study the regularities of formation of symmetric helical carbon filaments from Ni-Cu/MgO-catalyzed butadiene-1,3 decomposition at 450 degrees C. Dissymetrical spirally twisted carbon filaments have been shown to grow from a single Ni-Cn alloy particle. As the filaments grow, a microphase of metastable nickel carbide Ni3C forms on the particles' frontal side, whereas the crystal particle of Ni-Cu alloy possesses a series of twinning planes (111) that is parallel to the dissymmetry plane of the crystal and separates the blocks of twins with a face-centered structure. The mechanism of symmetric helical filamentous carbon growth has been suggested. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：267 / 270

页数：4

共 8 条

[1] UNIQUE FORM OF FILAMENTOUS CARBON [J].