𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Dynamic kinetics of catalytic dehydrogenation of methanol to formaldehyde

✍ Scribed by Philippe Zaza; Harvey Randall; Ralf Doepper; Albert Renken

Book ID
103934030
Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
615 KB
Volume
20
Category
Article
ISSN
0920-5861

No coin nor oath required. For personal study only.

✦ Synopsis

Methanol dehydrogenation to formaldehyde was operated in a continuous fixed-bed reactor with external recycling in the presence of sodium carbonate catalyst supported on active carbon. Due to the importance of gas phase decompositions of methanol and mainly formaldehyde, selectivity of formaldehyde in such a reactor is small compared to that obtained in a fixed-bed reactor. Furthermore, the contribution of gas phase reactions to formaldehyde synthesis through global dehydrogenation of methanol complicates steady-state kinetic studies. However, transient and methanol isotope (CD,OD and CH,OD) transient experiments showed that a hydrogen species and also a methoxy and/or a hydroxymethyl intermediate (s) are strongly adsorbed on the catalyst surface. Based on these facts, a mechanism of methanol dehydrogenation on sodium carbonate catalyst supported on active carbon is proposed.

This reaction is thermodynamically reversible in the temperature range of concern, according to calculations with the data of Daubert and Danner [4]. In order to produce pure formaldehyde without a unit operation of separation a high conversion of methanol is

πŸ“œ SIMILAR VOLUMES

Catalytic dehydrogenation of methanol to
Catalytic dehydrogenation of methanol to water-free formaldehyde
✍ Dr. Shoujin Su; Dipl.-Chem.-Ing. Philippe Zaza; Prof. Dr. Albert Renken πŸ“‚ Article πŸ“… 1994 πŸ› John Wiley and Sons 🌐 English βš– 697 KB

## Abstract Catalytic dehydrogenation of methanol is a promising process of producing water‐free formaldehyde. The present paper reviews research in this field. As effective catalysts mainly transition metal compounds as well as oxides and salts containing sodium have been reported. Several catalys

Kinetics of the catalytic oxidation of m
Kinetics of the catalytic oxidation of methanol to formaldehyde
✍ Elio Santacesaria; Massimo Morbidelli; Sergio CarrΓ  πŸ“‚ Article πŸ“… 1981 πŸ› Elsevier Science 🌐 English βš– 787 KB

## Ahstraet -The kinetics of the oxidation of methanol to formaldehyde, over iron molybdate as catalyst, have been studied. The kinetic runs have been performed with a CSTR reactor. The results can be described with a kinetic model derived on the basis of a redox mechanism partially hindered by th