✦ LIBER ✦
Solid catalysts treated with anions: XXI. Zirconia-supported chromium catalyst for dehydrocyclization of hexane to benzene
✍ Scribed by Kazushi Arata; Makoto Hino; Hiromi Matsuhashi
- Book ID
- 103963154
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 478 KB
- Volume
- 100
- Category
- Article
- ISSN
- 0926-860X
No coin nor oath required. For personal study only.
✦ Synopsis
A dehydrogenation catalyst for alkanes was obtained by immersing Zr (OH), in 0.05 M ( NH4 )&rO,, followed by calcination in air at 600~899°C and reduction at 550°C (0.5 wt.-% Cr). This catalyst converted hexane into benzene with a selectivity of up to 89% under pulse conditions, and the yield of benzene at 550°C was steady up to 6 h with 76% selectivity in a flow system at atmospheric pressure. HfOp was also effective as a support, but A1203, SiO*, TiOs, and SnOz were not. Measurements of ESR and XPS showed the ZrOs catalyst to be Cf"-Crrv, created by reduction of CrOz-/ZrOs.