𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Vanadium pentoxide as catalyst in the air gasification of chars

✍ Scribed by Carlos Moreno-Castilla; José Rivera-Utrilla; Antonio J. López-Peinado


Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
503 KB
Volume
68
Category
Article
ISSN
0016-2361

No coin nor oath required. For personal study only.

✦ Synopsis


Air-gasification at low temperatures (733-773 K) of chars from Spanish coals catalysed by V,O, has been studied and the results have been compared with those obtained previously using copper as catalyst. Under the reaction conditions, both catalysts showed high activity due to their ability to undergo redox cycles at the interface and to wet, more or less extensively, the surface of the carbon. However, samples containing copper showed the highest reactivity, in contrast to the findings of other authors at higher temperatures.


📜 SIMILAR VOLUMES


The state of calcium as a char gasificat
✍ J.P. Joly; D. Cazorla-Amoros; H. Charcosset; A. Linares-Solano; N.R. Marcilio; A 📂 Article 📅 1990 🏛 Elsevier Science 🌐 English ⚖ 809 KB

The purpose of this study was to characterize the calcium (nature, amount of various species and state of division) in carbonaceous materials such as low-rank coal char or a model char (obtained by pyrolysis of a polymeric resin at 1273 K under an inert gas). Ca loading (~6 wt%) was performed by imp

153. Formation of stable oxygen complexe
✍ R.L. Taylor; P.L. Walker Jr. 📂 Article 📅 1982 🏛 Elsevier Science 🌐 English ⚖ 143 KB

The formation of surface complexes on active sites during the reaction of Saran char with air at 648K has been investigated. The oxygen complexes were thermally desorbed up to 1223K as CO and CO2 following gasification of the char to different levels of burn-off. Areas occupied by the complex increa

A study of the role of alkali metal salt
✍ Bernard J. Wood; Robert D. Brittain; K.H. Lau 📂 Article 📅 1985 🏛 Elsevier Science 🌐 English ⚖ 544 KB

## Knudsen cell mass spectrometry has been used to determine the gaseous species in thermodynamic equilibrium with admixtures of carbon and alkali metal salts. Both halides and carbonates were used as additives. In addition to measurements of equilibrium vapor pressures, the effect of added steam

Mixtures of potassium sulphate and iron
✍ Klaus J. Hüttinger; Roland Minges 📂 Article 📅 1985 🏛 Elsevier Science 🌐 English ⚖ 441 KB

Previously it was shown that certain mixtures of K2S04 and FeSO, were excellent raw materials for catalytic watervapourgasification of carbon. It was suggested from the results that the iron salt catalyses the reduction of K2S04 to K as the main catalyticly active species of gasification. This paper