INVESTIGADORES
SEDRAN Ulises Anselmo
artículos
Título:
Synthesis of methyl tert-butyl ether on sulfur - promoted ZrO2
Autor/es:
M. QUIROGA; N. FIGOLI; U. SEDRAN
Revista:
CHEMICAL ENGINEERING JOURNAL
Editorial:
ELSEVIER SCIENCE SA
Referencias:
Lugar: Amsterdam; Año: 1997 vol. 67 p. 199 - 203
ISSN:
1385-8947
Resumen:
The
synthesis of methyl tert-butyl
ether (MTBE) from methanol and isobutylene in a gas?solid heterogeneous system
over sulfur-promoted zirconias calcined at different temperatures between 400
and 700°C was studied. The reaction temperature was varied in the range 90?110
°C, and methanol to isobutylene molar ratios were changed from 1.0 to 1.3. The
catalyst acidity was a direct function of the sulfur load, in turn a consequence
of the calcination temperature. Temperature programmed reduction experiments
allowed us to observe that the sulfur reduction process is different according
to the calcination temperature. The highest activity was observed on the sample
calcined at 600 °C, which was comparable with that of the reference catalyst
Amberlyst 15 under the same conditions. A direct relationship between catalyst
acidity and conversion was not observed. The injection of water completely
poisoned the catalyst activity in a reversible manner.