Carbonized Melamine Cyanurate as a Palladium Catalyst Support for the Dehydrogenation of N-heterocyclic Compounds in LOHC Technology Full article
| Journal |
C-Journal of Carbon Research
ISSN: 2311-5629 |
||
|---|---|---|---|
| Output data | Year: 2023, Volume: 9, Number: 3, Article number : 83, Pages count : 19 DOI: 10.3390/c9030083 | ||
| Tags | g-C3N4; melamine cyanurate; Pd catalysts; hydrogen storage; LOHC; dehydrogenation | ||
| Authors |
|
||
| Affiliations |
|
Funding (3)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0005 |
| 2 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0010 |
| 3 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0003 |
Abstract:
In this work, the use of graphite-like carbon nitride (g-C3N4) with improved texture characteristics for the synthesis of supported palladium catalysts of dehydrogenation of nitrogen-containing heterocycles was studied. This process is key to the creation of liquid organic carrier technology (LOHC) using N-heterocycles as reversibly hydrogenated/dehydrogenated substrates. For the preparation of graphite-like carbon nitride supports with advanced textural characteristics, well-established technology of the melamine cyanurate complex carbonization and standard techniques of adsorption precipitation together with wet impregnation were used for the synthesis of Pd-containing systems. The activity of the synthesized catalysts was studied in decahydroquinoline dehydrogenation. The high weight content of extractable hydrogen (7.2 wt%) and the high extraction rate, respectively, make it possible to consider these substances as the most promising N-heterocyclic compounds for this technology. It was shown that an increase in the specific surface area of g-C3N4 allows for achieving a slightly lower but comparable fineness of palladium particles for the 1 wt% Pd/MCA-500 sample, compared to the standard 1 wt% Pd/C. In this case, the catalytic activity of 1 wt% Pd/MCA-500 in the dehydrogenation of both substrates exceeded the analogous parameter for catalysts supported by nitrogen-free supports. This regularity is presumably associated with the electron-donor effect of surface nitrogen, which favorably affects the dehydrogenation rate as well as the stability of catalytic systems.
Cite:
Koskin A.P.
, Larichev Y.V.
, Stepanenko S.A.
, Dubinin Y.V.
, Ayupov A.B.
, Saraev A.A.
, Suprun E.A.
, Yeletsky P.M.
Carbonized Melamine Cyanurate as a Palladium Catalyst Support for the Dehydrogenation of N-heterocyclic Compounds in LOHC Technology
C-Journal of Carbon Research. 2023. V.9. N3. 83 :1-19. DOI: 10.3390/c9030083 WOS Scopus РИНЦ AN OpenAlex
Carbonized Melamine Cyanurate as a Palladium Catalyst Support for the Dehydrogenation of N-heterocyclic Compounds in LOHC Technology
C-Journal of Carbon Research. 2023. V.9. N3. 83 :1-19. DOI: 10.3390/c9030083 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Jun 30, 2023 |
| Accepted: | Aug 24, 2023 |
| Published online: | Aug 30, 2023 |
| Published print: | Sep 1, 2023 |
Identifiers:
| Web of science: | WOS:001076920400001 |
| Scopus: | 2-s2.0-85172809089 |
| Elibrary: | 54948166 |
| Chemical Abstracts: | 2023:2053623 |
| OpenAlex: | W4386286852 |
Altmetrics:
