Structure characterization of the supported amorphous Ni-B/SiO2 catalysts

被引：0

作者：

Zhang, XX ^{[1
]}

Ma, AZ

Mu, XH

Min, EZ

Huang, XQ

Wang, R

机构：

[1] Res Inst Petr Proc, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Beijing 100083, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2000年 / 16卷 / 02期

关键词：

Ni-B amorphous catalyst; crystallization; structure characterization;

D O I：

10.3866/PKU.WHXB20000216

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：

Amorphous Ni-B/SiO2 catalysts were prepared by chemical reduction of Ni2 + with KBH4. ICP was used to analyze the composition of alloys. XRD, TEM, SAED and HREM were used to examine the structures of samples fresh and after thermal treatment in different atmospheres. The results indicated that the supported NiB has a higher structural stability than ultrafine NiB amorphous alloy. Low temperature pretreatment in hydrogen can reduce nickel oxide on the surface of catalysts. However, treatment in hydrogen is more favorable than in atmosphere and nitrogen for keeping it in stable state.

引用

页码：180 / 183

页数：4

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