Study of reverse water gas shift reaction by TPD, TPR and CO2 hydrogenation over potassium-promoted Cu/SiO2 catalyst
1
Department of Electronic Materials, Chin Min College, Shie-Fu Road, Tou-Fen, Maio-Li, Taiwan, ROC
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Publication type: Journal Article
Publication date: 2003-01-01
scimago Q2
wos Q2
SJR: 1.000
CiteScore: 8.6
Impact factor: 4.8
ISSN: 0926860X, 18733875
Catalysis
Process Chemistry and Technology
Abstract
The reverse water gas shift (RWGS) reaction over Cu/SiO 2 with and without potassium promoter was studied by means of CO 2 hydrogenation, temperature programmed reduction (TPR) and temperature programmed desorption (TPD). After addition of even a little amount of potassium, Cu/K 2 O/SiO 2 obviously offers better catalytic activity than Cu/SiO 2 . The coverage of formate species increases on Cu/K catalyst. TPD of CO 2 adsorbed on Cu/K 2 O/SiO 2 and TPR profile of Cu/K 2 O/SiO 2 showed that new active sites could be created at interface between Cu and K. The main role of K 2 O was to provide catalytic activity for decomposition of formates, besides acting as a promoter for CO 2 adsorption. A new reaction mechanism was suggested. Hydrogen was dissociatively adsorbed on Cu and could spill over to K 2 O to associate with CO 2 . This resulted in the formation of formate species for the production of CO.
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Chen C., Cheng W., Lin S. Study of reverse water gas shift reaction by TPD, TPR and CO2 hydrogenation over potassium-promoted Cu/SiO2 catalyst // Applied Catalysis A: General. 2003. Vol. 238. No. 1. pp. 55-67.
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Chen C., Cheng W., Lin S. Study of reverse water gas shift reaction by TPD, TPR and CO2 hydrogenation over potassium-promoted Cu/SiO2 catalyst // Applied Catalysis A: General. 2003. Vol. 238. No. 1. pp. 55-67.
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TY - JOUR
DO - 10.1016/S0926-860X(02)00221-1
UR - https://doi.org/10.1016/S0926-860X(02)00221-1
TI - Study of reverse water gas shift reaction by TPD, TPR and CO2 hydrogenation over potassium-promoted Cu/SiO2 catalyst
T2 - Applied Catalysis A: General
AU - Chen, Ching-Shiun
AU - Cheng, Wu-Hsun
AU - Lin, Shou-Shiun
PY - 2003
DA - 2003/01/01
PB - Elsevier
SP - 55-67
IS - 1
VL - 238
SN - 0926-860X
SN - 1873-3875
ER -
Cite this
BibTex (up to 50 authors)
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@article{2003_Chen,
author = {Ching-Shiun Chen and Wu-Hsun Cheng and Shou-Shiun Lin},
title = {Study of reverse water gas shift reaction by TPD, TPR and CO2 hydrogenation over potassium-promoted Cu/SiO2 catalyst},
journal = {Applied Catalysis A: General},
year = {2003},
volume = {238},
publisher = {Elsevier},
month = {jan},
url = {https://doi.org/10.1016/S0926-860X(02)00221-1},
number = {1},
pages = {55--67},
doi = {10.1016/S0926-860X(02)00221-1}
}
Cite this
MLA
Copy
Chen, Ching-Shiun, et al. “Study of reverse water gas shift reaction by TPD, TPR and CO2 hydrogenation over potassium-promoted Cu/SiO2 catalyst.” Applied Catalysis A: General, vol. 238, no. 1, Jan. 2003, pp. 55-67. https://doi.org/10.1016/S0926-860X(02)00221-1.