High temperature process for selective production of 3-methylpyridine
US5149816A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1991 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | Jan 4, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the selective production of 3-methylpyridine in high yield comprising the step of contacting a vaporized feed stream containing 2-methyl-1,5-pentanediamine with a metal-oxide catalyst of other than an alkali metal at a temperature of about 500.degree.-600.degree. C. for a contact time of less than about 30 seconds. The catalyst may be on a suitable heterogeneous support, and additives in the feed stream may include 3-methylpiperidine as well as water, hydrogen, ammonia, or nitrogen or some other inert gas. A fluid-bed reactor is preferred, with recycling of by-product and continuous effective runs without catalyst regeneration being accomplished at the stated temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.