Synthesis of Polymer Protected Pd-Ag/ZnO Catalysts for Phenylacetylene hydrogenation

[EN] A simple and environmentally friendly method, based on sequential adsorption of polyacrylamide (PAM) and transition metal ions (Pd2+, Ag+) on zinc oxide precipitated from water solution, was used to synthesize supported mono- and bimetallic catalysts with various Pd:Ag ratios. The catalyst characterization results indicated that PAM and metal ions are completely adsorbed by zinc oxide, forming polymer-stabilized Pd and Ag nanoparticles of 1¿3 nm in size, evenly distributed on the support surface. The catalysts were studied in the hydrogenation of phenylacetylene under mild conditions (0.1 MPa, 40 °C). This work was carried out with the financial support of the State Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan (Grants Nos. AP09563383 and AP09259638). JMLN thanks also Spanish Government for financial support (CRTl2018-099668-B-C21 project). Zharmagambetova, A.; Auyezkhanova, A.; Talgatov, E.; Jumekeyeva, A.; Buharbayeva, F.; Akhmetova, S.; Myltykbayeva, Z... (2022). Synthesis of Polymer Protected Pd-Ag/ZnO Catalysts for Phenylacetylene hydrogenation. Journal of Nanoparticle Research. 24(12). https://doi.org/10.1007/s11051-022-05621-1 Blaser HU, Schnyder A, Steiner H, Rossler F, Baumeister P (2008) Handbook of Heterogeneous Catalysis. In: Ertl G, Knozinger H, Scüth F, Weitkamp J (eds) Selective Hydrogenation of Functionalized Hydrocarbons. Wiley-VCH Verlag, Weinheim, pp 3284–3308. https://doi.org/10.1002/9783527610044.hetcat0167 Cordoba M, Coloma-Pascual F, Quiroga ME, Lederhos CR (2019) Olefin purification and selective hydrogenation of alkynes with low loaded Pd nanoparticle catalysts. Ind Eng Chem Res 58:17182–17194. https://doi.org/10.1021/acs.iecr.9b02081 Huang F, Jia Zh, Diao J, Yuan H, Da Su, Liu H (2019) Palladium nanoclusters immobilized on defective nanodiamond-graphene core-shell supports for semihydrogenation of phenylacetylene. J Energy Chem 33:31–36. https://doi.org/10.1016/j.jechem.2018.08.006 Nikolaev SA, Zanaveskin LN, Smirnov VV, Averyanov VA, Zanaveskin KL (2009) Catalytic hydrogenation of alkyne and alkadiene impurities from alkenes. Practical and theoretical aspects. Russ Chem Rev 78:231–247. https://doi.org/10.1070/RC2009v078n03ABEH003893 Yang L, Yu S, Peng C, Fang X, Cheng Z, Zhou Z (2019) Semihydrogenation of phenylacetylene over nonprecious Ni-based catalysts supported on AlSBA-15. J Catal 370:310–320. https://doi.org/10.1016/j.jcat.2019.01.012 Markov PV, Mashkovsky IS, Bragina GO, Wär