Ni-M-O (M=Sn, Ti and W) catalysts prepared from dry mixing method for oxidative dehydrogenation of ethane

Handle URI:
http://hdl.handle.net/10754/603943
Title:
Ni-M-O (M=Sn, Ti and W) catalysts prepared from dry mixing method for oxidative dehydrogenation of ethane
Authors:
Zhu, Haibo; Rosenfeld, Devon C.; Harb, Moussab ( 0000-0001-5540-9792 ) ; Anjum, Dalaver H.; Hedhili, Mohamed N. ( 0000-0002-3624-036X ) ; Ould-Chikh, Samy ( 0000-0002-3486-0944 ) ; Basset, Jean-Marie ( 0000-0003-3166-8882 )
Abstract:
A new generation of Ni-Sn-O, Ni-Ti-O, and Ni-W-O catalysts has been prepared by a solid state grinding method. In each case the doping metal varied from 2.5% to 20%. These catalysts exhibited higher activity and selectivity for ethane oxidative dehydrogenation (ODH) than conventionally prepared mixed oxides. Detailed characterisation was achieved using XRD, N2 adsorption, H2-TPR, SEM, TEM, and HAADF-STEM in order to study the detailed atomic structure and textural properties of the synthesized catalysts. Two kinds of typical structures are found in these mixed oxides, which are (major) “NixMyO” (M = Sn, Ti or W) solid solution phases (NiO crystalline structure with doping atom incorporated in the lattice) and (minor) secondary phases (SnO2, TiO2 or WO3). The secondary phase exists as a thin layer around small “NixMyO” particles, lowering the aggregation of nanoparticles during the synthesis. DFT calculations on the formation energies of M-doped NiO structures (M = Sn, Ti, W) clearly confirm the thermodynamic feasibility of incorporating these doping metals into NiO struture. The incorporation of doping metals into the NiO lattice decreases the number of holes (h+) localized on lattice oxygen (O2- + h+ ➔ O●-), which is the main reason for the improved catalytic performance (O●- is known to favor complete ethane oxidation to CO2). The high efficiency of ethylene production achieved in these particularly prepared mixed oxide catalysts indicates that the solid grinding method could serve as a general and practical approach for the preparation of doped NiO based catalysts.
KAUST Department:
KAUST Catalysis Center (KCC); KAUST Core Lab
Citation:
Ni-M-O (M=Sn, Ti and W) catalysts prepared from dry mixing method for oxidative dehydrogenation of ethane 2016 ACS Catalysis
Publisher:
American Chemical Society (ACS)
Journal:
ACS Catalysis
Issue Date:
25-Mar-2016
DOI:
10.1021/acscatal.6b00044
Type:
Article
ISSN:
2155-5435; 2155-5435
Sponsors:
The authors acknowledge financial support from The Dow Chemical Company.
Additional Links:
http://pubs.acs.org/doi/abs/10.1021/acscatal.6b00044
Appears in Collections:
Articles; KAUST Catalysis Center (KCC)

Full metadata record

DC FieldValue Language
dc.contributor.authorZhu, Haiboen
dc.contributor.authorRosenfeld, Devon C.en
dc.contributor.authorHarb, Moussaben
dc.contributor.authorAnjum, Dalaver H.en
dc.contributor.authorHedhili, Mohamed N.en
dc.contributor.authorOuld-Chikh, Samyen
dc.contributor.authorBasset, Jean-Marieen
dc.date.accessioned2016-03-30T07:24:30Zen
dc.date.available2016-03-30T07:24:30Zen
dc.date.issued2016-03-25en
dc.identifier.citationNi-M-O (M=Sn, Ti and W) catalysts prepared from dry mixing method for oxidative dehydrogenation of ethane 2016 ACS Catalysisen
dc.identifier.issn2155-5435en
dc.identifier.issn2155-5435en
dc.identifier.doi10.1021/acscatal.6b00044en
dc.identifier.urihttp://hdl.handle.net/10754/603943en
dc.description.abstractA new generation of Ni-Sn-O, Ni-Ti-O, and Ni-W-O catalysts has been prepared by a solid state grinding method. In each case the doping metal varied from 2.5% to 20%. These catalysts exhibited higher activity and selectivity for ethane oxidative dehydrogenation (ODH) than conventionally prepared mixed oxides. Detailed characterisation was achieved using XRD, N2 adsorption, H2-TPR, SEM, TEM, and HAADF-STEM in order to study the detailed atomic structure and textural properties of the synthesized catalysts. Two kinds of typical structures are found in these mixed oxides, which are (major) “NixMyO” (M = Sn, Ti or W) solid solution phases (NiO crystalline structure with doping atom incorporated in the lattice) and (minor) secondary phases (SnO2, TiO2 or WO3). The secondary phase exists as a thin layer around small “NixMyO” particles, lowering the aggregation of nanoparticles during the synthesis. DFT calculations on the formation energies of M-doped NiO structures (M = Sn, Ti, W) clearly confirm the thermodynamic feasibility of incorporating these doping metals into NiO struture. The incorporation of doping metals into the NiO lattice decreases the number of holes (h+) localized on lattice oxygen (O2- + h+ ➔ O●-), which is the main reason for the improved catalytic performance (O●- is known to favor complete ethane oxidation to CO2). The high efficiency of ethylene production achieved in these particularly prepared mixed oxide catalysts indicates that the solid grinding method could serve as a general and practical approach for the preparation of doped NiO based catalysts.en
dc.description.sponsorshipThe authors acknowledge financial support from The Dow Chemical Company.en
dc.language.isoenen
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urlhttp://pubs.acs.org/doi/abs/10.1021/acscatal.6b00044en
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Catalysis, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/acscatal.6b00044.en
dc.titleNi-M-O (M=Sn, Ti and W) catalysts prepared from dry mixing method for oxidative dehydrogenation of ethaneen
dc.typeArticleen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.contributor.departmentKAUST Core Laben
dc.identifier.journalACS Catalysisen
dc.eprint.versionPost-printen
dc.contributor.institutionThe Dow Chemical Company, 2301 N. Brazosport Blvd., Freeport, TX 77541, USAen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorZhu, Haiboen
kaust.authorHarb, Moussaben
kaust.authorAnjum, Dalaver H.en
kaust.authorHedhili, Mohamed N.en
kaust.authorOuld-Chikh, Samyen
kaust.authorBasset, Jean-Marieen
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