Show simple item record

dc.contributor.authorHengne, Amol Mahalingappa
dc.contributor.authorSamal, Akshaya Kumar
dc.contributor.authorEnakonda, Linga
dc.contributor.authorHarb, Moussab
dc.contributor.authorGevers, Lieven
dc.contributor.authorAnjum, Dalaver H.
dc.contributor.authorHedhili, Mohamed N.
dc.contributor.authorSaih, Youssef
dc.contributor.authorHuang, Kuo-Wei
dc.contributor.authorBasset, Jean-Marie
dc.date.accessioned2018-04-16T11:27:44Z
dc.date.available2018-04-16T11:27:44Z
dc.date.issued2018-04-02
dc.identifier.citationHengne AM, Samal AK, Enakonda LR, Harb M, Gevers LE, et al. (2018) Ni–Sn-Supported ZrO2 Catalysts Modified by Indium for Selective CO2 Hydrogenation to Methanol. ACS Omega 3: 3688–3701. Available: http://dx.doi.org/10.1021/acsomega.8b00211.
dc.identifier.issn2470-1343
dc.identifier.issn2470-1343
dc.identifier.doi10.1021/acsomega.8b00211
dc.identifier.urihttp://hdl.handle.net/10754/627526
dc.description.abstractNi and NiSn supported on zirconia (ZrO2) and on indium (In)-incorporated zirconia (InZrO2) catalysts were prepared by a wet chemical reduction route and tested for hydrogenation of CO2 to methanol in a fixed-bed isothermal flow reactor at 250 °C. The mono-metallic Ni (5%Ni/ZrO2) catalysts showed a very high selectivity for methane (99%) during CO2 hydrogenation. Introduction of Sn to this material with the following formulation 5Ni5Sn/ZrO2 (5% Ni-5% Sn/ZrO2) showed the rate of methanol formation to be 0.0417 μmol/(gcat·s) with 54% selectivity. Furthermore, the combination NiSn supported on InZrO2 (5Ni5Sn/10InZrO2) exhibited a rate of methanol formation 10 times higher than that on 5Ni/ZrO2 (0.1043 μmol/(gcat·s)) with 99% selectivity for methanol. All of these catalysts were characterized by X-ray diffraction, high-resolution transmission electron microscopy (HRTEM), scanning transmission electron microscopy (STEM), X-ray photoelectron spectroscopy, CO2-temperature-programmed desorption, and density functional theory (DFT) studies. Addition of Sn to Ni catalysts resulted in the formation of a NiSn alloy. The NiSn alloy particle size was kept in the range of 10–15 nm, which was evidenced by HRTEM study. DFT analysis was carried out to identify the surface composition as well as the structural location of each element on the surface in three compositions investigated, namely, Ni28Sn27, Ni18Sn37, and Ni37Sn18 bimetallic nanoclusters, and results were in agreement with the STEM and electron energy-loss spectroscopy results. Also, the introduction of “Sn” and “In” helped improve the reducibility of Ni oxide and the basic strength of catalysts. Considerable details of the catalytic and structural properties of the Ni, NiSn, and NiSnIn catalyst systems were elucidated. These observations were decisive for achieving a highly efficient formation rate of methanol via CO2 by the H2 reduction process with high methanol selectivity.
dc.description.sponsorshipWe are thankful for the financial support from the King Abdullah University of Science and Technology.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/acsomega.8b00211
dc.rightsThis is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
dc.rights.urihttp://pubs.acs.org/page/policy/authorchoice_termsofuse.html
dc.subjectBiofuels
dc.subjectCatalysts
dc.subjectNanoclusters
dc.subjectQuantum mechanical methods
dc.titleNi–Sn-Supported ZrO2 Catalysts Modified by Indium for Selective CO2 Hydrogenation to Methanol
dc.typeArticle
dc.contributor.departmentChemical Science Program
dc.contributor.departmentElectron Microscopy
dc.contributor.departmentHomogeneous Catalysis Laboratory (HCL)
dc.contributor.departmentImaging and Characterization Core Lab
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSurface Science
dc.identifier.journalACS Omega
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionCentre for Nano and Material Sciences, Jain University, Jain Global Campus, Ramanagaram, Bangalore 562112, India
kaust.personHengne, Amol Mahalingappa
kaust.personSamal, Akshaya Kumar
kaust.personEnakonda, Linga
kaust.personHarb, Moussab
kaust.personGevers, Lieven
kaust.personAnjum, Dalaver H.
kaust.personHedhili, Mohamed N.
kaust.personSaih, Youssef
kaust.personHuang, Kuo-Wei
kaust.personBasset, Jean-Marie
refterms.dateFOA2018-06-14T04:22:03Z
dc.date.published-online2018-04-02
dc.date.published-print2018-04-30


Files in this item

Thumbnail
Name:
acsomega.8b00211.pdf
Size:
13.82Mb
Format:
PDF
Description:
Published version
Thumbnail
Name:
ao8b00211_si_001.pdf
Size:
2.321Mb
Format:
PDF
Description:
Supplemental files

This item appears in the following Collection(s)

Show simple item record