Hydrogenation of carbon dioxide over copper-pyrochlore/zeolite composite catalysts

✍ Scribed by M. Fujiwara; R. Kieffer; L. Udron; H. Ando; Y. Souma

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 365 KB
• Volume: 29
• Category: Article
• ISSN: 0920-5861
• DOI: 10.1016/0920-5861(95)00302-9

✦ Synopsis

The hydrogenation of CO 2 was studied over composite catalysts obtained by mixing Cu-based methanol synthesis catalyst and HY zeolite. A mechanism associating methanol synthesis and MTG (methanol to gasoline) reaction allowed the formation of CI-C 4 hydrocarbons. It was found that the catalytic behaviors of the composite catalysts were favorably influenced by the characteristics of the methanol synthesis catalysts. The Cu-La2Zr20 7 catalyst we recently developed associated with HY zeolite exhibited interesting performances in hydrocarbon synthesis. The addition of ZrO 2 to Cu-La2Zr2OT/HY enhanced the ability to produce hydrocarbons. Comparing composite catalyst systems prepared with different Cu-based methanol synthesis catalysts, the effect of Na contamination on methanol and hydrocarbon formation over composite catalysts were also discussed.