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dc.contributor.authorDe, Sudipta
dc.contributor.authorGevers, Lieven
dc.contributor.authorEmwas, Abdul-Hamid M.
dc.contributor.authorGascon, Jorge
dc.date.accessioned2019-03-27T06:22:51Z
dc.date.available2019-03-27T06:22:51Z
dc.date.issued2019-01-16
dc.identifier.citationDe S, Gevers L, Emwas A-H, Gascon J (2019) Conversion of Formic Acid into Methanol Using a Bipyridine-Functionalized Molecular Heterogeneous Catalyst. ACS Sustainable Chemistry & Engineering 7: 3933–3939. Available: http://dx.doi.org/10.1021/acssuschemeng.8b05070.
dc.identifier.issn2168-0485
dc.identifier.issn2168-0485
dc.identifier.doi10.1021/acssuschemeng.8b05070
dc.identifier.urihttp://hdl.handle.net/10754/631731
dc.description.abstractAlthough the conversion of carbon dioxide (and its derivatives) into methanol has attracted remarkable attention in the last two decades, performing this process over a heterogeneous catalyst under mild conditions is still a challenging task. We report bipyridine-functionalized iridium-based heterogeneous catalysts for the hydrogenation of formic acid to produce methanol at low temperature. The solid catalysts were obtained by postsynthetic metalation of bipyridine-functionalized organosilica nanotubes with a [Cp*Ir(H2O)3]SO4 (Cp* = η5-pentamethylcyclopentadienyl) complex. Detailed studies including N2 physisorption, TEM, XPS, and 13C CP MAS NMR confirmed the stable structures of nanotube supports and the molecular nature of the active species. The catalysts showed competitive methanol selectivities compared to their homogeneous counterpart under similar reaction conditions. Addition of strong acids (such as triflic acid) showed improved methanol selectivity, whereas the presence of free bipyridine groups was found to promote the dehydrogenation of formic acid, resulting in low methanol selectivity. The catalyst showed excellent reusability over four consecutive cycles without any significant loss in activity and maintained its heterogeneous nature in extremely high acidic environment.
dc.description.sponsorshipResearch reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/acssuschemeng.8b05070
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Sustainable Chemistry & Engineering, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acssuschemeng.8b05070.
dc.subjectHydrogen storage
dc.subjectHydrogenation of formic acid
dc.subjectIridium-bipyridine complex
dc.subjectMethanol production
dc.subjectMolecular heterogeneous catalysis
dc.titleConversion of Formic Acid into Methanol Using a Bipyridine-Functionalized Molecular Heterogeneous Catalyst
dc.typeArticle
dc.contributor.departmentChemical Engineering Program
dc.contributor.departmentCore Labs
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentNMR
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalACS Sustainable Chemistry & Engineering
dc.conference.date2018-07-18 to 2018-07-21
dc.conference.name40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2018
dc.conference.locationHonolulu, HI, USA
dc.eprint.versionPost-print
kaust.personDe, Sudipta
kaust.personGevers, Lieven
kaust.personEmwas, Abdul-Hamid M.
kaust.personGascon, Jorge
dc.date.published-online2019-01-16
dc.date.published-print2019-02-18


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