Abstract
Ni catalysts supported on CaO-precoated Al2O3 were prepared and characterized by BET, XRD and TPR techniques. The Ni/CaO/Al 2O3 catalysts with various CaO loadings were applied to carbon dioxide reforming of CH4. All the catalysts showed a fairly good stability but the activity of Ni/CaO/Al2O3 depended upon the amount of CaO. Among the catalysts tested, the Ni/CaO/Al 2O3 catalyst with a Ca/Al ratio of 0.04 exhibited the highest activity and stability. The interaction between Ni and the support was changed with the addition of CaO and the variation of Ca/Al ratio. Based on the characterization results, the promotional effect of CaO on Ni/-Al 2O3 resulted from (1) the interaction between Ni and CaO, (2) the stabilization of CaO on Al2O3 and (3) the strong basicity of CaO. It was suggested that the highly dispersed CaO species are effective to obtain active and stable Ni/CaO/Al2O3 catalysts in carbon dioxide reforming of methane.
| Original language | English |
|---|---|
| Pages (from-to) | 762-767 |
| Number of pages | 6 |
| Journal | Journal of Industrial and Engineering Chemistry |
| Volume | 9 |
| Issue number | 6 |
| Publication status | Published - 2003 Dec 1 |
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All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
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Carbon dioxide reforming of methane over Ni/CaO/Al2O3. / Roh, Hyun Seog; Liu, Zhong Wen; Potdar, H. S.; Kim, Jae Woo; Jun, Ki Won.
In: Journal of Industrial and Engineering Chemistry, Vol. 9, No. 6, 01.12.2003, p. 762-767.Research output: Contribution to journal › Article
TY - JOUR
T1 - Carbon dioxide reforming of methane over Ni/CaO/Al2O3
AU - Roh, Hyun Seog
AU - Liu, Zhong Wen
AU - Potdar, H. S.
AU - Kim, Jae Woo
AU - Jun, Ki Won
PY - 2003/12/1
Y1 - 2003/12/1
N2 - Ni catalysts supported on CaO-precoated Al2O3 were prepared and characterized by BET, XRD and TPR techniques. The Ni/CaO/Al 2O3 catalysts with various CaO loadings were applied to carbon dioxide reforming of CH4. All the catalysts showed a fairly good stability but the activity of Ni/CaO/Al2O3 depended upon the amount of CaO. Among the catalysts tested, the Ni/CaO/Al 2O3 catalyst with a Ca/Al ratio of 0.04 exhibited the highest activity and stability. The interaction between Ni and the support was changed with the addition of CaO and the variation of Ca/Al ratio. Based on the characterization results, the promotional effect of CaO on Ni/-Al 2O3 resulted from (1) the interaction between Ni and CaO, (2) the stabilization of CaO on Al2O3 and (3) the strong basicity of CaO. It was suggested that the highly dispersed CaO species are effective to obtain active and stable Ni/CaO/Al2O3 catalysts in carbon dioxide reforming of methane.
AB - Ni catalysts supported on CaO-precoated Al2O3 were prepared and characterized by BET, XRD and TPR techniques. The Ni/CaO/Al 2O3 catalysts with various CaO loadings were applied to carbon dioxide reforming of CH4. All the catalysts showed a fairly good stability but the activity of Ni/CaO/Al2O3 depended upon the amount of CaO. Among the catalysts tested, the Ni/CaO/Al 2O3 catalyst with a Ca/Al ratio of 0.04 exhibited the highest activity and stability. The interaction between Ni and the support was changed with the addition of CaO and the variation of Ca/Al ratio. Based on the characterization results, the promotional effect of CaO on Ni/-Al 2O3 resulted from (1) the interaction between Ni and CaO, (2) the stabilization of CaO on Al2O3 and (3) the strong basicity of CaO. It was suggested that the highly dispersed CaO species are effective to obtain active and stable Ni/CaO/Al2O3 catalysts in carbon dioxide reforming of methane.
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M3 - Article
AN - SCOPUS:9744228410
VL - 9
SP - 762
EP - 767
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
SN - 1226-086X
IS - 6
ER -