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Enhancing both selectivity and coking-resistance of a single-atom Pd1/C3N4 catalyst for acetylene hydrogenation
Abstract
Selective hydrogenation is an important industrial catalytic process in chemical upgrading, where Pd-based catalysts are widely used because of their high hydrogenation activities. However, poor selectivity and short catalyst lifetime because of heavy coke formation have been major concerns. In this work, atomically dispersed Pd atoms were successfully synthesized on graphitic carbon nitride (g-C 3 N 4 ) using atomic layer deposition. Aberration-corrected high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) confirmed the dominant presence of isolated Pd atoms without Pd nanoparticle (NP) formation. During selective hydrogenation of acetylene in excess ethylene, the g-C 3 N 4 -supported Pd NP catalysts had strikingly higher ethylene selectivities than the conventional Pd/Al 2 O 3 and Pd/SiO 2 catalysts. In-situ X-ray photoemission spectroscopy revealed that the considerable charge transfer from the Pd NPs to g-C 3 N 4 likely plays an important role in the catalytic performance enhancement. More impressively, the single-atom Pd 1 /C 3 N 4 catalyst exhibited both higher ethylene selectivity and higher coking resistance. Our work demonstrates that the single-atom Pd catalyst is a promising candidate for improving both selectivity and coking-resistance in hydrogenation reactions.
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Cites
Metal-free efficient photocatalyst for stable visible water splitting via a two-electron pathway
Liu, J., Liu, Y., Liu, N., Han, Y., Zhang, X., Huang, H., Lifshitz, Y., Lee, S.-T., Zhong, J., & Kang, Z. (2015) · Science · doi:10.1126/science.aaa3145 · Cited by 4,468
Cited by
Xiao, X., Gao, Y., Zhang, L., Zhang, J., Zhang, Q., Li, Q., Bao, H., Zhou, J., Miao, S., Chen, N., et al. (2020) · Advanced Materials · doi:10.1002/adma.202003082 · Cited by 528
Chen, W., Pei, J., He, C., Wan, J., Ren, H., Zhu, Y., Wang, Y., Dong, J., Tian, S., Cheong, W., et al. (2017) · Angewandte Chemie International Edition · doi:10.1002/anie.201710599 · Cited by 519
Self-citationPan, Y., Zhang, C., Liu, Z., Chen, C., & Li, Y. (2020) · Matter · doi:10.1016/j.matt.2019.11.014 · Cited by 341
Single-atom catalysis enables long-life, high-energy lithium-sulfur batteries
Zhuang, Z., Kang, Q., Wang, D., & Li, Y. (2020) · Nano Research · doi:10.1007/s12274-020-2827-4 · Cited by 322
Metadata
- Authors
- Huang, X., Xia, Y., Cao, Y., Zheng, X., Pan, H., Zhu, J., Ma, C., Wang, H., Li, J., You, R., Wei, S., Huang, W., & Lu, J.
- Venue
- Nano Research
- Publisher
- Tsinghua University Press
- Published
- 2017-02-20
- Volume
- 10
- Issue
- 4
- Pages
- 1302-1312
- ISSN
- 1998-0000 (ISSN-L)
- 1998-0124
- OpenAlex
- W2590889333
- Cited by
- 277
- References
- 1
- FWCI
- 11.17
- Type
- journal article
- Language
- en
- Open access
- closed
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- Huang, X., Xia, Y., Cao, Y., Zheng, X., Pan, H., Zhu, J., Ma, C., Wang, H., Li, J., You, R., Wei, S., Huang, W., & Lu, J. (2017). Enhancing both selectivity and coking-resistance of a single-atom Pd1/C3N4 catalyst for acetylene hydrogenation. Nano Research. https://doi.org/10.1007/s12274-016-1416-z
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