Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 53, Issue -, Pages 333-340Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2017.05.004
Keywords
Phenol hydrogenation; Pd@CN; Deactivation; Regeneration; After-treatment
Funding
- National Key Research and Development Plan [2016YFB0301503]
- Jiangsu Natural Science Foundation for Distinguished Young Scholars [BK20150044]
- National Natural Science Foundation [91534110, 21606124]
- Natural Science Foundation of Jiangsu Province [BK20160978]
- Foundation from State Key Laboratory of Materials-Oriented Chemical Engineering [ZK201402, ZK201407]
- Technology Innovation Foundation for Science and Technology Enterprises in Jiangsu Province of China [BC2015008]
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The deactivation mechanism of Pd@CN catalyst in the liquid-phase phenol hydrogenation was investigated by designing many experiments. The phenol conversion decreased by 40% through five reaction cycles. The catalyst deactivation could be mainly ascribed to the surface coverage and the pore blockage with organic matters including cyclohexanone and other derivatives. Three after-treatment methods, i.e., water washing, drying and storing in water, strongly affected the catalytic activity of Pd@CN. After the reaction, by storing the recovered Pd@CN catalyst in water, its catalytic performance could be maintained. These findings provide in-depth insights on the deactivation and recycling of Pd@CN catalyst. (C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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