| 摘要 |
FIELD: chemical industry. SUBSTANCE: process comprises high- temperature dehydrogenation of iminodibenzyl on contact iron oxide/potassium salt catalyst in vapor phase at 500- 600 C. Catalyst comprises 44-85 wt.% of iron compound based on Fe<SB>2</SB>O<SB>3</SB> and 7-35 wt.% of potassium compound based on K<SB>2</SB>O, in addition to 0.0-3.5 wt.% of chromium compound based on Cr<SB>2</SB>O<SB>3</SB>, and typical promoters. Catalyst increases yield of iminostilbene as reaction is continuously carried out. EFFECT: more efficient preparation process. 13 cl, 23 ex, 6 tbl
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