The non-linear behaviour of the NO-H-2 reaction over Rh surfaces

被引：4

作者：

Janssen, NMH ^{[1
]}

Neill, JA ^{[1
]}

Cobden, PD ^{[1
]}

Nieuwenhuys, BE ^{[1
]}

Ikai, M ^{[1
]}

Tanaka, K ^{[1
]}

机构：

[1] LEIDEN UNIV, GORLAEUS LABS, LEIDEN INST CHEM, NL-2300 RA LEIDEN, NETHERLANDS

来源：

CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 1996年 / 74卷 / 05期

关键词：

NO-H-2 reaction over Rh; non-linearity; Rh(533); Rh(100); Rh(711);

D O I：

10.1002/cjce.5450740509

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this paper we describe the non-linearity of the NO-H-2 reaction over Rh surfaces. Rate oscillations have been observed over a stepped (111) surface with (100) steps, (Rh(533) at low pressures (10(-4) Pa) below 500 K, while no oscillations could be observed under these conditions over a Rh(100) surface and a stepped (100) surface with (ii I) steps, Rh(711). The thermal stability of the N atoms formed during the reaction explains the observed structure sensitivity. Moreover, the results suggest that diffusion of N atoms is needed to synchronise the rate oscillations, a process that is absent on Rh(100) and Rh(711).

引用

页码：606 / 611

页数：6

共 24 条

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