{"id":1613,"date":"2024-12-09T11:25:29","date_gmt":"2024-12-09T11:25:29","guid":{"rendered":"https:\/\/catalysis.chem.uoi.gr\/?p=1613"},"modified":"2024-12-09T11:29:43","modified_gmt":"2024-12-09T11:29:43","slug":"double-ligand-fe-pnp-pp3-and-their-hybrids-fe-sio2pnp-pp3-as-catalysts-for-h2-production-from-hcooh","status":"publish","type":"post","link":"https:\/\/catalysis.chem.uoi.gr\/index.php\/2024\/12\/09\/double-ligand-fe-pnp-pp3-and-their-hybrids-fe-sio2pnp-pp3-as-catalysts-for-h2-production-from-hcooh\/","title":{"rendered":"Double-Ligand [Fe\/PNP\/PP3] and Their Hybrids [Fe\/SiO2@PNP\/PP3] as Catalysts for H2-Production from HCOOH"},"content":{"rendered":"\n
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Marinos Theodorakopoulos, Maria Solakidou, Yiannis Deligiannakis, MariaLouloudi.<\/p>\n\n\n\n

Energies<\/em> 2024<\/strong>, 17<\/em>(16), 3934; <\/p>\n\n\n\n

https:\/\/doi.org\/10.3390\/en17163934<\/a>
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Formic acid dehydrogenation; H2<\/sub> production; Double ligand; Iron catalysts; PNP ligands<\/p>\n<\/div>\n<\/div>\n\n\n\n

Abstract <\/strong><\/p>\n\n\n\n

Two types of iron-based catalysts, [Fe\/SiO2<\/sub>@iPro<\/sup>PNP\/PP3] and [Fe\/SiO2<\/sub>@tBu<\/sup>PNP\/PP3], for the dehydrogenation of formic acid (FADH), were synthesized. These catalysts were developed using a double-ligand approach combining a PNP ligand and a PP3 ligand, demonstrating functionality without the need for additional cocatalysts or additives. Furthermore, hybrid catalysts [Fe\/SiO2<\/sub>@iPro<\/sup>PNP\/PP3] and [Fe\/SiO2<\/sub>@tBu<\/sup>PNP\/PP3] were created by covalently grafting PNP ligands onto SiO2<\/sub> particles. The hybrid [Fe\/SiO2<\/sub>@iPro<\/sup>PNP\/PP3] exhibited enhanced recyclability, with turnover numbers (TONs) exceeding 74,000. In situ ATR-FTIR and UV-Vis spectroscopies were used to monitor the structure and dynamics of the catalysts under catalytic conditions, revealing the formation of active catalysts through the involvement of all components: [Fe (metal)\/PNP (first ligand)\/PP3 (second ligand)\/FA (substrate)], which are crucial to FADH catalysis. An Arrhenius study revealed that the hybrid [Fe\/SiO2<\/sub>@iPro<\/sup>PNP\/PP3] had a lower activation energy (Ea<\/sub> = 42.5 kJ\/mol) compared to its homogeneous counterpart (Ea<\/sub> = 48.2 kJ\/mol), indicating superior catalytic performance. Conversely, [Fe\/SiO2<\/sub>@tBu<\/sup>PNP\/PP3] showed an increased activation energy (Ea<\/sub> = 48.3 kJ\/mol) compared to its homogeneous form (Ea<\/sub> = 46.4 kJ\/mol). This study discusses the differing roles of tBu<\/sup>PNP and iPro<\/sup>PNP in catalyst configuration, highlighting the potential of double-ligand catalysts to enhance the performance and recyclability of PNP ligands in FADH, offering significant implications for the development of efficient and reusable catalytic systems.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Marinos Theodorakopoulos, Maria Solakidou, Yiannis Deligiannakis, MariaLouloudi. Energies 2024, 17(16), 3934;  https:\/\/doi.org\/10.3390\/en17163934 Formic acid dehydrogenation; H2 production; Double ligand; Iron catalysts; PNP ligands Abstract Two types of iron-based catalysts, [Fe\/SiO2@iProPNP\/PP3] and [Fe\/SiO2@tBuPNP\/PP3], for the dehydrogenation of formic acid (FADH), were synthesized. These catalysts were developed using a double-ligand approach combining a PNP ligand and a PP3 ligand, … Continue reading Double-Ligand [Fe\/PNP\/PP3] and Their Hybrids [Fe\/SiO2@PNP\/PP3] as Catalysts for H2-Production from HCOOH<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/posts\/1613"}],"collection":[{"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/comments?post=1613"}],"version-history":[{"count":6,"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/posts\/1613\/revisions"}],"predecessor-version":[{"id":1621,"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/posts\/1613\/revisions\/1621"}],"wp:attachment":[{"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/media?parent=1613"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/categories?post=1613"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/catalysis.chem.uoi.gr\/index.php\/wp-json\/wp\/v2\/tags?post=1613"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}