|
NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.51A [2012] >
IJC-A Vol.51A(09-10) [September-October 2012] >
| Title: | Carbon dioxide reforming of methane over ruthenium substituted strontium titanate perovskite catalysts |
| Authors: | Gurav, Hanmant R
Bobade, Richa
Das, Vineetha Lakshmi
Chilukuri, Satyanarayana |
| Keywords: | Carbon dioxide reforming
Dry reforming
Methane reforming
Catalysts
Doped catalysts
Ruthenium doped catalysts
Citrate gel method
Syngas
Reverse water gas shift
Perovskites
Strontium titanate |
| Issue Date: | Sep-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Strontium titanate (SrTiO3)
doped with varying amounts of ruthenium (7.9, 15.6 and 31 wt%) have been
prepared by the citrate gel synthesis method. Structural and textural characterizations reveal that at lower
concentrations, a major part of Ru is incorporated in the lattice of SiTiO3. The content of surface Ru (outside
lattice) increases with increasing amounts of the doped Ru. The surface
Ru reduced at lower temperatures compared to Ru incorporated into the lattice.
The reduction of the lattice substituted Ru occurs only at temperatures above
the collapse of the perovskite structure. The catalyst sample with 7.9 wt% of
Ru shows good conversions in the dry reforming of methane with CO2.
The conversion of CO2 is in excess compared to methane under the
studied reaction conditions. As a result, H2/CO ratio of the product
gases which should have been equivalent to unity is lower than the stoichiometric
value. This ratio is particularly low when lower reaction temperatures (873–973
K) were used. Similar was the case when high space velocities were used. Low
methane conversion and reverse water gas shift reaction are the causes for the
low H2/CO ratios.
|
| Page(s): | 1339-1347 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Source: | IJC-A Vol.51A(09-10) [September-October 2012]
|
|
