Phosphorus as a promoter of a nickel catalyst to obtain 1-phenylethanol from chemoselective hydrogenation of acetophenone
Two catalysts were prepared using monodisperse pre-synthetized nanoparticles of metallic nickel and nickel phosphides with the same average diameter. Both nanoparticles species were deposited on the same support: mesoporous silica nano-spheres of MCM-41. This support is suitable to inhibit agglomera...
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| Format: | Article |
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Elsevier
2019-06-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844019313775 |
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| author | Dolly Carolina Costa Analía Leticia Soldati José Fernando Bengoa Sergio Gustavo Marchetti Virginia Vetere |
| author_facet | Dolly Carolina Costa Analía Leticia Soldati José Fernando Bengoa Sergio Gustavo Marchetti Virginia Vetere |
| author_sort | Dolly Carolina Costa |
| collection | DOAJ |
| description | Two catalysts were prepared using monodisperse pre-synthetized nanoparticles of metallic nickel and nickel phosphides with the same average diameter. Both nanoparticles species were deposited on the same support: mesoporous silica nano-spheres of MCM-41. This support is suitable to inhibit agglomeration and sintering processes during preparation steps. Therefore, two supported and activated catalysts with the same average nanoparticles diameter were obtained. They differ only in the nature of the active species: metallic nickel and nickel phosphides. The effect of the presence of a second element (phosphorus), more electronegative than nickel, on the activity and selectivity in the chemoselective hydrogenation of acetophenone was studied. The reaction conditions were: H2 pressure of 1 MPa, 80 °C using n-heptane as solvent. With the aim to understand the catalytic results, nanoparticles, support and catalysts were carefully characterized by X-ray diffraction, diffuse light scattering, transmission electron microcopy, high resolution transmission electron microcopy, selected area electron diffraction, scanning electron microcopy, Fourier transformer infrared spectroscopy, N2 adsorption at -196 °C, atomic absorption, H2 and CO chemisorption and volumetric oxidation. Considering these results and geometric and electronic characteristics of the surface of both active species, a change in the adsorption intermediate state of acetophenone in presence of phosphorus is proposed to explain the hydrogenation chemoselectivity of nickel phospides. |
| first_indexed | 2024-12-22T03:38:00Z |
| format | Article |
| id | doaj.art-e017dfa42faf460a99d75bddbb072dcd |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-12-22T03:38:00Z |
| publishDate | 2019-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-e017dfa42faf460a99d75bddbb072dcd2022-12-21T18:40:19ZengElsevierHeliyon2405-84402019-06-0156e01859Phosphorus as a promoter of a nickel catalyst to obtain 1-phenylethanol from chemoselective hydrogenation of acetophenoneDolly Carolina Costa0Analía Leticia Soldati1José Fernando Bengoa2Sergio Gustavo Marchetti3Virginia Vetere4Centro de Investigación y Desarrollo en Ciencias Aplicadas “Dr. Jorge J. Ronco”-CINDECA (UNLP-CONICET-CICBA), Calle 47 N 257, 1900, La Plata, Bs. As, ArgentinaGrupo de Caracterización de Materiales, Centro Atómico Bariloche, CONICET. Av. Bustillo, 9500, San Carlos de Bariloche, Río Negro, ArgentinaCentro de Investigación y Desarrollo en Ciencias Aplicadas “Dr. Jorge J. Ronco”-CINDECA (UNLP-CONICET-CICBA), Calle 47 N 257, 1900, La Plata, Bs. As, ArgentinaCentro de Investigación y Desarrollo en Ciencias Aplicadas “Dr. Jorge J. Ronco”-CINDECA (UNLP-CONICET-CICBA), Calle 47 N 257, 1900, La Plata, Bs. As, ArgentinaCentro de Investigación y Desarrollo en Ciencias Aplicadas “Dr. Jorge J. Ronco”-CINDECA (UNLP-CONICET-CICBA), Calle 47 N 257, 1900, La Plata, Bs. As, Argentina; Corresponding author.Two catalysts were prepared using monodisperse pre-synthetized nanoparticles of metallic nickel and nickel phosphides with the same average diameter. Both nanoparticles species were deposited on the same support: mesoporous silica nano-spheres of MCM-41. This support is suitable to inhibit agglomeration and sintering processes during preparation steps. Therefore, two supported and activated catalysts with the same average nanoparticles diameter were obtained. They differ only in the nature of the active species: metallic nickel and nickel phosphides. The effect of the presence of a second element (phosphorus), more electronegative than nickel, on the activity and selectivity in the chemoselective hydrogenation of acetophenone was studied. The reaction conditions were: H2 pressure of 1 MPa, 80 °C using n-heptane as solvent. With the aim to understand the catalytic results, nanoparticles, support and catalysts were carefully characterized by X-ray diffraction, diffuse light scattering, transmission electron microcopy, high resolution transmission electron microcopy, selected area electron diffraction, scanning electron microcopy, Fourier transformer infrared spectroscopy, N2 adsorption at -196 °C, atomic absorption, H2 and CO chemisorption and volumetric oxidation. Considering these results and geometric and electronic characteristics of the surface of both active species, a change in the adsorption intermediate state of acetophenone in presence of phosphorus is proposed to explain the hydrogenation chemoselectivity of nickel phospides.http://www.sciencedirect.com/science/article/pii/S2405844019313775Materials chemistryOrganic chemistryPhysical chemistryChemical engineeringMaterials scienceNanoparticles |
| spellingShingle | Dolly Carolina Costa Analía Leticia Soldati José Fernando Bengoa Sergio Gustavo Marchetti Virginia Vetere Phosphorus as a promoter of a nickel catalyst to obtain 1-phenylethanol from chemoselective hydrogenation of acetophenone Heliyon Materials chemistry Organic chemistry Physical chemistry Chemical engineering Materials science Nanoparticles |
| title | Phosphorus as a promoter of a nickel catalyst to obtain 1-phenylethanol from chemoselective hydrogenation of acetophenone |
| title_full | Phosphorus as a promoter of a nickel catalyst to obtain 1-phenylethanol from chemoselective hydrogenation of acetophenone |
| title_fullStr | Phosphorus as a promoter of a nickel catalyst to obtain 1-phenylethanol from chemoselective hydrogenation of acetophenone |
| title_full_unstemmed | Phosphorus as a promoter of a nickel catalyst to obtain 1-phenylethanol from chemoselective hydrogenation of acetophenone |
| title_short | Phosphorus as a promoter of a nickel catalyst to obtain 1-phenylethanol from chemoselective hydrogenation of acetophenone |
| title_sort | phosphorus as a promoter of a nickel catalyst to obtain 1 phenylethanol from chemoselective hydrogenation of acetophenone |
| topic | Materials chemistry Organic chemistry Physical chemistry Chemical engineering Materials science Nanoparticles |
| url | http://www.sciencedirect.com/science/article/pii/S2405844019313775 |
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