English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Conference Paper

Deactivation and Regeneration of Mn-Promoted Sulfated Zirconia Alkane Isomerization Catalysts: An In-Situ Spectroscopic Study

MPS-Authors
/persons/resource/persons21737

Klose,  Barbara S.
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21674

Jentoft,  Rolf E.
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21999

Ressler,  Thorsten
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21682

Joshi,  Pradnya
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22181

Trunschke,  Annette
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22071

Schlögl,  Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21673

Jentoft,  Friederike C.
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

Locator
There are no locators available
Fulltext (public)

klose-jentoft_dg25[1].11.04.pdf
(Any fulltext), 419KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Klose, B. S., Jentoft, R. E., Ressler, T., Joshi, P., Trunschke, A., Schlögl, R., et al. (2004). Deactivation and Regeneration of Mn-Promoted Sulfated Zirconia Alkane Isomerization Catalysts: An In-Situ Spectroscopic Study. In S. Ernst, A. Jess, J. Lercher, M. Marchionna, P. Prinz, & E. Schwab (Eds.), Proceedings of the DGMK-Conference C4/C5-Hydrocarbons: Routes to higher value-added products (pp. 23-30). Hamburg, Germany: DGMK Deutsche Wissenschaftliche Gesellschaft für Erdöl, Erdgas und Kohle e.V.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-0E08-3
Abstract
Abstract Mn-promoted sulfated zirconia (0.5 or 2 wt% Mn) was investigated during activation (in inert or oxidizing atmosphere at 703–773 K), during n-butane isomerization (323–333 K, 1 kPa n-butane) and during regeneration (see activation conditions) using in situ UV–vis–NIR, diffuse reflectance IR, and X-ray absorption spectroscopies. While the activation atmosphere did not influence the degree of hydration and the state of the sulfate, manganese—which was always present as a mixture of Mn2+ and higher oxidation states—was slightly reduced in the absence of oxygen. Catalytic data did not give a clear picture as to whether activation in oxygen-containing atmosphere is advantageous or not. The catalysts deactivated within hours, but complete recovery in O2 was possible. Heating of a deactivated catalyst in N2 produced an inactive material and unsaturated compounds on the surface.