Dynamics of Bulk Oxygen in the Selective Oxidation of Acrolein

被引：10
作者：
Heid, Maurice [1 ]
Knoche, Stefan [1 ]
Gora, Niklas [1 ]
Ohlig, Dominik [1 ]
Drochner, Alfons [1 ]
Etzold, Bastian J. M. [1 ]
Vogel, Herbert [1 ]
机构：
[1] Tech Univ Darmstadt, Ernst Berl Inst Tech & Makromol Chem, Alarich Weiss Str 8, D-64287 Darmstadt, Germany
来源：
CHEMCATCHEM | 2017年 / 9卷 / 12期
关键词：
acrolein; mixed oxides; oxidation; pulse-technique; steady-state isotopic transient kinetic analysis (SSIKTA); W-MIXED-OXIDE; CATALYZED PARTIAL OXIDATION; ACRYLIC-ACID; DIFFUSION; PERFORMANCE; TRANSIENT; EXCHANGE; SYSTEMS;
D O I：
10.1002/cctc.201700124
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 gas-phase oxidation of acrolein to acrylic acid on a hydrothermally prepared mixed oxide catalyst was investigated by steady-state isotopic transient kinetic analysis (SSIKTA) as well as different types of concentration-programmed techniques (CPR-pulse, CPO) under in situ or process-relevant conditions. Balancing the amounts of active oxygen gives an overview of the quantities of participating bulk oxygen species. The dynamics of bulk oxygen lead to re-oxidation processes on the catalyst surface and thus influence the selectivity pattern of the network of acrolein oxidation. Furthermore, the bulk dynamics are activated by temperature.
引用
收藏
页码：2390 / 2398
页数：9
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