Scholarly record
EFFECT OF THE REACTOR TYPE AND SOLVENT NATURE ON THE BEHAVIOR OF POLYMER-SUPPORTED PALLADIUM CATALYSTS OF SELECTIVE HYDROGENATION OF TRIPLE BOND
Abstract
This work is aimed at the search of optimal conditions of selective hydrogenation of 2-methyl-3-butyn-2-ol (MBY) to 2-methyl-3-buten-2-ol (MBE). The main question was if the common slurry reactors are suitable for this reaction under ambient hydrogen pressure with the use of environmentally friendly solvents. Thus, we investigated the effect of the reactor type (shaker-type or slurry), temperature and solvent nature (isopropanol, n-butanol or toluene were used) on the behavior of a palladium catalysts (1 wt.% of Pd) deposited on amorphous aromatic polymers in the reaction of selective hydrogenation of MBY to MBE. Aromatic polymers were synthesized by the one-step cross-linking of such monomers as benzene and naphthalene using methylal as an external cross-linking agent. These polymers are simple in synthesis and possess high porosity (specific surface area is about 1000 m2/g) that favors stabilization of Pd nanoparticles into the polymers- pores. It was demonstrated that synthesized catalysts allow achieving high selectivity with respect to MBE (95-96% at almost complete conversion of MBY). Moreover, since the reaction was carried out at ambient hydrogen pressure, the method of hydrogen supply and sampling has strong influence as well as the nature of the solvent, which affects not only the hydrogen partial pressure, but also the hydrogen solubility and the adsorption of the reagents.
Publication Impact Profile
- Captures
- Mendeley - Readers: 1
Publication details
References12
Roessler F., Catalytic hydrogenation in the liquid phase, Chimia, vol. 57, pp. 791-798, 2003. DOI: 10.2533/000942903777678416
Tungler A., Tarnai T., Heged�s L., Fodor K., M�th� T., Palladium-mediated heterogeneous catalytic hydrogenations, Platinum Metals Rev., vol. 42, pp. 108-115, 1998. DOI: 10.1595/003214098x423108115
Zhao X., Chang Y., Chen W.-J., Wu Q., Pan X., Chen K., Weng B., Recent progress in Pd-based nanocatalysts for selective hydrogenation, ACS Omega, vol. 7, pp. 17-31, 2022. DOI: 10.1021/acsomega.1c06244
Xie K., Xu K., Liu M., Song X., Xu S., Si H., Catalysts for selective hydrogenation of acetylene: A review, Mater. Today Catal., vol. 3, pp. 100029, 2023. DOI: 10.1016/j.mtcata.2023.100029
Zhang H., Wang Y., Wang Y., Cao J., Kang P., Tang Q., Ma M., Highly dispersed PdNPs/a-Al2O3 catalyst for the selective hydrogenation of acetylene prepared with monodispersed Pd nanoparticles, Catalysts, vol. 7, pp. 128, 2017. DOI: 10.3390/catal7050128
Segura Y., L�pez N., P�rez-Ram�rez J., Origin of the superior hydrogenation selectivity of gold nanoparticles in alkyne + alkene mixtures: Triple- versus double-bond activation, J. Catal., vol. 247, pp. 383-386, 2007. DOI: 10.1016/j.jcat.2007.02.019
McCue A.J., Guerrero-Ruiz A., Ramirez-Barria C., Rodr�guez-Ramos I., Anderson J.A., Selective hydrogenation of mixed alkyne/alkene streams at elevated pressure over a palladium sulfide catalyst, J. Catal., vol. 355, pp. 40-52, 2017. DOI: 10.1016/j.jcat.2017.09.004
Bonrath W., Eggersdorfer M., Netscher T., Catalysis in the industrial preparation of vitamins and nutraceuticals, Catal. Today, 1vol. 21, pp. 45-57, 2007. DOI: 10.1016/j.cattod.2006.11.021
Chen X., Shi C., Liang C. Highly selective catalysts for the hydrogenation of alkynols: A review, Chin. J. Catal., vol. 42, pp. 2105-2121, 2021. DOI: 10.1016/s1872-2067(20)63773-1
Tshabalala T.A., Ojwach S.O., Kinetics and chemoselectivity studies of hydrogenation reactions of alkenes and alkynes catalyzed by (benzoimidazol-2-ylmethyl)amine palladium(II) complexes, Inorg. Chim. Acta, vol. 483, pp. 148-155, 2018. DOI: 10.1016/j.ica.2018.08.004
Li X.-T., Chen L., Shang C., Liu Z.-P., Selectivity control in alkyne semihydrogenation: Recent experimental and theoretical progress, Chin. J. Catal., vol. 43, pp. 1991-2000, 2022. DOI: 10.1016/s1872-2067(21)64036-6
Li B., Gong R., Wang W., Huang X., Zhang W., Li H., Hu C., Tan B., A new strategy to microporous polymers: knitting rigid aromatic building blocks by external cross-linker, Macromolecules, vol. 44, pp. 2410-2414, 2011. DOI: 10.1021/ma200630s
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.