Pd/C Catalysts Based on Synthetic Carbons with bi- and tri-Modal Pore-Size Distribution: Applications in Flow Chemistry Full article
Journal |
Catalysis Science and Technology
ISSN: 2044-4753 , E-ISSN: 2044-4761 |
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Output data | Year: 2016, Volume: 6, Number: 7, Pages: 2387-2395 Pages count : 9 DOI: 10.1039/c5cy01401h | ||||||||||||||
Tags | Catalyst supports; Catalysts; Hydrogenation; Nanoparticles; Pore size; Size distribution | ||||||||||||||
Authors |
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Affiliations |
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Funding (4)
1 | Engineering and Physical Sciences Research Council | EP/C519736/1 |
2 | The University of Bath | |
3 | Royal Society | |
4 | The University of Bath |
Abstract:
Two new types of phenolic resin-derived synthetic carbons with bi-modal and tri-modal pore-size distributions were used as supports for Pd catalysts. The catalysts were tested in chemoselective hydrogenation and hydrodehalogenation reactions in a compact multichannel flow reactor. Bi-modal and tri-modal micro-mesoporous structures of the synthetic carbons were characterised by N2 adsorption. HR-TEM, PXRD and XPS analyses were performed for characterising the synthesised catalysts. N2 adsorption revealed that tri-modal synthetic carbon possesses a well-developed hierarchical mesoporous structure (with 6.5 nm and 42 nm pores), contributing to a larger mesopore volume than the bi-modal carbon (1.57 cm3 g−1versus 1.23 cm3 g−1). It was found that the tri-modal carbon promotes a better size distribution of Pd nanoparticles than the bi-modal carbon due to presence of hierarchical mesopore limitting the growth of Pd nanoparticles. For all the model reactions investigated, the Pd catalyst based on tri-modal synthetic carbon (Pd/triC) show high activity as well as high stability and reproducibility. The trend in reactivities of different functional groups over the Pd/triC catalyst follows a general order alkyne ≫ nitro > bromo ≫ aldehyde.
Cite:
Fan X.
, Sans V.
, Sharma S.K.
, Plucinski P.K.
, Zaikovskii V.I.
, Wilson K.
, Tennison S.R.
, Kozynchenko A.
, Lapkin A.A.
Pd/C Catalysts Based on Synthetic Carbons with bi- and tri-Modal Pore-Size Distribution: Applications in Flow Chemistry
Catalysis Science and Technology. 2016. V.6. N7. P.2387-2395. DOI: 10.1039/c5cy01401h WOS Scopus РИНЦ
Pd/C Catalysts Based on Synthetic Carbons with bi- and tri-Modal Pore-Size Distribution: Applications in Flow Chemistry
Catalysis Science and Technology. 2016. V.6. N7. P.2387-2395. DOI: 10.1039/c5cy01401h WOS Scopus РИНЦ
Files:
Full text from publisher
Dates:
Submitted: | Aug 25, 2015 |
Accepted: | Nov 13, 2015 |
Published online: | Nov 19, 2015 |
Published print: | Apr 7, 2016 |
Identifiers:
Web of science | WOS:000373608400040 |
Scopus | 2-s2.0-84963837784 |
Elibrary | 27010472 |
Chemical Abstracts | 2015:1868989 |
Chemical Abstracts (print) | 164:410206 |
OpenAlex | W2175820171 |