Fifth unsteady-state processes in catalysis; A special issue of chemical engineering science

✍ Scribed by Toshimitsu Suzuki; Tomohiko Tagawa; Takashi Aida

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 45 KB
• Volume: 63
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/s0009-2509(08)00486-7

✦ Synopsis

Fifth unsteady-state processes in catalysis; A special issue of chemical engineering science Most of the chemical reaction processes including catalytic are conducted under steady-state conditions while transition to forced unsteady-state processes can improve the process performance substantially. The unsteady-states can be created by periodic changes in input flow parameters, such as changes in inlet temperature and composition, catalyst circulation through reaction and regeneration zones, or periodic flow reversals through fixed catalyst beds. This can result in increased productivity, selectivity, capital savings and operating cost reduction (higher energy efficiency). Using the unsteadystate or transient experimental technique such as temporal analysis of products (TAP) provides new opportunities for studying the catalytic reactions.