Long-Time Stability vs Deactivation of Pd–Ag/Al2O3 Egg-Shell Catalysts in Selective Hydrogenation of Acetylene
Publication type: Journal Article
Publication date: 2015-06-26
scimago Q1
wos Q2
SJR: 0.828
CiteScore: 6.7
Impact factor: 3.9
ISSN: 08885885, 15205045
General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering
Abstract
Industrial relevant Pd–Ag/Al2O3 egg-shell catalysts with varying Pd/Ag mole ratios were prepared, characterized (CO chemisorption, DRIFTS, EPMA, STEM, coupled with EELS and EDX, as well as TPR) and tested for selective hydrogenation of acetylene under tail-end conditions. Characterization suggests a reduction of the total number of Pd surface atoms nPd,surf as well as an isolation of large Pd ensembles. The effect of silver addition on byproduct formation and deactivation behavior was investigated, representing a higher long time stability of Pd5–Ag95/Al2O3 in comparison to silver free Pd100/Al2O3 egg-shell catalysts, due to a decrease of green oil and coke formation. The selectivity to C6 compounds is a fundamental indicator for long-term stability of palladium catalysts that is often overlooked in the literature. Furthermore, this study implicates selective hydrogenation of acetylene as a structure sensitive reaction originating from a geometric effect.
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Citations from 2025:
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Kuhn M., Lucas M., CLAUS P. Long-Time Stability vs Deactivation of Pd–Ag/Al2O3 Egg-Shell Catalysts in Selective Hydrogenation of Acetylene // Industrial & Engineering Chemistry Research. 2015. Vol. 54. No. 26. pp. 6683-6691.
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Kuhn M., Lucas M., CLAUS P. Long-Time Stability vs Deactivation of Pd–Ag/Al2O3 Egg-Shell Catalysts in Selective Hydrogenation of Acetylene // Industrial & Engineering Chemistry Research. 2015. Vol. 54. No. 26. pp. 6683-6691.
Cite this
RIS
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TY - JOUR
DO - 10.1021/acs.iecr.5b01682
UR - https://doi.org/10.1021/acs.iecr.5b01682
TI - Long-Time Stability vs Deactivation of Pd–Ag/Al2O3 Egg-Shell Catalysts in Selective Hydrogenation of Acetylene
T2 - Industrial & Engineering Chemistry Research
AU - Kuhn, Martin
AU - Lucas, Martin
AU - CLAUS, Peter
PY - 2015
DA - 2015/06/26
PB - American Chemical Society (ACS)
SP - 6683-6691
IS - 26
VL - 54
SN - 0888-5885
SN - 1520-5045
ER -
Cite this
BibTex (up to 50 authors)
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@article{2015_Kuhn,
author = {Martin Kuhn and Martin Lucas and Peter CLAUS},
title = {Long-Time Stability vs Deactivation of Pd–Ag/Al2O3 Egg-Shell Catalysts in Selective Hydrogenation of Acetylene},
journal = {Industrial & Engineering Chemistry Research},
year = {2015},
volume = {54},
publisher = {American Chemical Society (ACS)},
month = {jun},
url = {https://doi.org/10.1021/acs.iecr.5b01682},
number = {26},
pages = {6683--6691},
doi = {10.1021/acs.iecr.5b01682}
}
Cite this
MLA
Copy
Kuhn, Martin, et al. “Long-Time Stability vs Deactivation of Pd–Ag/Al2O3 Egg-Shell Catalysts in Selective Hydrogenation of Acetylene.” Industrial & Engineering Chemistry Research, vol. 54, no. 26, Jun. 2015, pp. 6683-6691. https://doi.org/10.1021/acs.iecr.5b01682.