A comparative study on hydrogenation of carbon dioxide and carbon monoxide over iron catalyst

✍ Scribed by Hisanori Ando; Yasuyuki Matsumura; Yoshie Souma

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 174 KB
• Volume: 154
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/s1381-1169(99)00359-3

✦ Synopsis

Hydrogenation of CO to hydrocarbons over iron catalysts reduced with hydrogen at 3508C and 5008C has been 2 compared with that of CO. The space time yield of hydrocarbons from CO at 2508C is significantly lower than from CO 2 and the selectivity to olefin compounds is also lower from CO . During the reaction with CO, x-Fe C is formed, and the 2 2 . 2 surface, which is oxidized even after the reduction at 5008C, is further reduced. On the other hand, formation of the carbide species is slight in hydrogenation of CO while the surface is rather oxidized. The formation of the carbide species, which is 2 probably the active site of hydrocarbon formation, is suppressed in the presence of CO .