2024
DOI: 10.1021/acscatal.3c05625
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Carbon Vacancies in Graphitic Carbon Nitride-Driven High Catalytic Performance of Pd/CN for Phenol-Selective Hydrogenation to Cyclohexanone

Xinlei Ding,
Ruyi Gao,
Yun Chen
et al.

Abstract: A series of modified carbon nitride with a controlled amount of carbon vacancies is prepared successfully by simple acid treatment, and the performances of the corresponding Pd/CN-X catalysts in phenol-selective hydrogenation are investigated. It is found that the Pd/CN-30 catalyst exhibits the highest activity, while Pd/CN-60 shows a very low activity. The characterization of powder X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectra, temperature-programmed desorption of phenol an… Show more

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Cited by 12 publications
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“…The 13 C solid-state nuclear magnetic resonance (ssNMR) spectra of the samples are shown in Figure e. Two resonance signals were observed near 164 and 156 ppm, attributed to C 3N (denoted as C 1 ) and C 2N‑NH x (denoted as C 2 ) in heptazine, respectively . The peak area ratio of C 1 to C 2 gradually decreased from 0.45 to 0.40 for the three samples, further demonstrating the formation of carbon vacancies in DCN and TDCN, mainly caused by the loss of carbon atoms at the C 1 position.…”
Section: Resultsmentioning
confidence: 99%
“…The 13 C solid-state nuclear magnetic resonance (ssNMR) spectra of the samples are shown in Figure e. Two resonance signals were observed near 164 and 156 ppm, attributed to C 3N (denoted as C 1 ) and C 2N‑NH x (denoted as C 2 ) in heptazine, respectively . The peak area ratio of C 1 to C 2 gradually decreased from 0.45 to 0.40 for the three samples, further demonstrating the formation of carbon vacancies in DCN and TDCN, mainly caused by the loss of carbon atoms at the C 1 position.…”
Section: Resultsmentioning
confidence: 99%