Method for non-oxidative production of formaldehyde from methanol

US6232507A · kind A · utility

Assignee

• Ticona LLC · US

Inventors

• Thomas Kaiser · Kelkheim, DE
• Elke Schweers · Bad Soden, DE
• Christine Meister · Pocking, DE

Key dates

• Filing date: Sep 26, 2000
• Grant date: May 15, 2001
• Expiry date: Sep 26, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for the nonoxidative preparation of formaldehyde from methanol The invention relates to a process for preparing formaldehyde from methanol by dehydrogenation in a reactor at temperatures in the range from 300 to 1000.degree. C. in the presence of a catalyst which is introduced into the reactor with the aid of a carrier gas to give a product gas mixture, wherein the formaldehyde is separated from the product gas mixture and at least part of the remaining product gas mixture is recirculated to the reactor in a circulating gas stream and the carrier gas used is a carbon-free gas or gas mixture.