| dc.contributor.author |
Das, D. |
|
| dc.contributor.author |
Mishra, H.K. |
|
| dc.contributor.author |
Dalai, A.K. |
|
| dc.contributor.author |
Parida, K.M. |
|
| dc.date.accessioned |
2018-10-01T12:22:13Z |
|
| dc.date.available |
2018-10-01T12:22:13Z |
|
| dc.date.issued |
2004 |
|
| dc.identifier.citation |
Catalysis Letters, 93(3-4), 2004: 185-193 |
|
| dc.identifier.issn |
1011-372X |
|
| dc.identifier.uri |
http://ore.immt.res.in/handle/2018/1125 |
|
| dc.description.abstract |
Sulfated zirconia-titania and its transition metal doped compositions with 1.5 wt% iron, and 0.5 wt% manganese were prepared and characterized for surface acidity, and activity towards benzene alkylation. Acidity measurement of the 600degreesC calcined samples showed that upon doping with Mn, the protonic acid strength of the material increased, whereas iron doping decreased the strength of surface protons and followed the order Mn-SO42-/ZrO2-TiO2>SO42-/ZrO2-TiO2>Fe-SO42-/ZrO2-TiO2. Samples calcined at 110 and 600degreesC were XRD amorphous. However, on calcination at 800degreesC these samples showed crystalline phases characteristic of ZrTiO4. The Mn doped catalyst also showed highest activity and improved catalyst stability towards isopropylation of benzene. A good correlation between surface acidity and isopropylation activity was obtained. Increase in acidity in case of Mn doped sample was attributed to the increased stability of the surface sulfate groups. |
|
| dc.language |
en |
|
| dc.publisher |
Kluwer Academic Publishers |
|
| dc.relation.isreferencedby |
SCI |
|
| dc.rights |
Copyright [2004]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository. |
|
| dc.subject |
Chemical Sciences |
|
| dc.title |
Iron, and manganese doped SO42-/ZrO2-TiO2 mixed oxide catalysts: studies on acidity and benzene isopropylation activity |
|
| dc.type |
Journal Article |
|
| dc.affiliation.author |
Univ Saskatchewan, Dept Chem Engn, Catalysis & Chem React Engn Labs, Saskatoon, SK S7N 0W0, Canada |
|