THE ALO+O-2 REACTION SYSTEM OVER A WIDE TEMPERATURE-RANGE

被引：36

作者：

BELYUNG, DP ^{[1
]}

FONTIJN, A ^{[1
]}

机构：

[1] RENSSELAER POLYTECH INST,ISERMANN DEPT CHEM ENGN,HIGH TEMP REACT KINET LAB,TROY,NY 12180

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1995年 / 99卷 / 32期

关键词：

D O I：

10.1021/j100032a027

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：

The kinetics of the AlO + O-2 reaction system has been studied in a high-temperature fast-flow reactor (HTFFR) from 7 to 100 mbar. The relative AlO concentrations were monitored by laser-induced fluorescence at the B-2 Sigma-X(2) Sigma and (CII)-I-2-X(2) Sigma transitions. Below about 1000 K the AlO consumption is pressure-dependent, that is, leading initially to AlO3, with log k(305-1010 K) = -25.36 - 1.69 log(T/K) cm(6) molecule(-2) s(-1), as obtained by weighted linear regression. At higher temperatures the system becomes pressure independent with AlO2 and O as the likely products. For this process k(1200-1690 K) = 7.7 x 10(-10) exp(-10008 K/T) cm(3) molecule(-1) s(-1). The accuracy estimates are discussed in the text. The reactions are suggested to proceed through an OAlOO addition complex of similar structure as identified in solid matrices.

引用

页码：12225 / 12230

页数：6

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