View in EDS

TiO2 nanotubes supported NiW hydrodesulphurization catalysts: Characterization and activity

Saved in:
Bibliographic Details
Title: TiO2 nanotubes supported NiW hydrodesulphurization catalysts: Characterization and activity
Authors: Palcheva, R.1 r.d.palcheva@smn.uio.no, Dimitrov, L.2, Tyuliev, G.1, Spojakina, A.1, Jiratova, K.3
Source: Applied Surface Science. Jan2013, Vol. 265, p309-316. 8p.
Subjects: Titanium dioxide, Nanotubes, Desulfurization, Catalyst supports, Surface area, Chemical synthesis, Raman spectroscopy
Abstract: Abstract: High surface area TiO2 nanotubes (Ti-NT) synthesized by alkali hydrothermal method were used as a support for NiW hydrodesulphurization catalyst. Nickel salt of 12-tungstophosphoric acid – Ni3/2PW12O40 was applied as oxide precursor of the active components. The catalyst was characterized by S BET, XRD, UV–vis DRS, Raman spectroscopy, XPS, TPR and HRTEM. The results obtained were compared with those for the NiW catalysts prepared over high surface area titania and alumina supports. A polytungstate phase evidenced by Raman spectroscopy was observed indicating the destruction of the initial heteropolyanion. The catalytic experiments revealed two times higher thiophene conversion on NiW catalyst supported on Ti-NT than those of catalysts supported on alumina and titania. Increased HDS activity of the NiW catalyst supported on Ti-NT could be related to a higher amount of W oxysulfide entities interacting with Ni sulfide particles as consequence of the electronic effects of the Ti-NT observed with XPS analysis. [Copyright &y& Elsevier]
Copyright of Applied Surface Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 84596561
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: TiO<subscript>2</subscript> nanotubes supported NiW hydrodesulphurization catalysts: Characterization and activity
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Palcheva%2C+R%2E%22">Palcheva, R.</searchLink><relatesTo>1</relatesTo><i> r.d.palcheva@smn.uio.no</i><br /><searchLink fieldCode="AR" term="%22Dimitrov%2C+L%2E%22">Dimitrov, L.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Tyuliev%2C+G%2E%22">Tyuliev, G.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Spojakina%2C+A%2E%22">Spojakina, A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Jiratova%2C+K%2E%22">Jiratova, K.</searchLink><relatesTo>3</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Applied+Surface+Science%22">Applied Surface Science</searchLink>. Jan2013, Vol. 265, p309-316. 8p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Titanium+dioxide%22">Titanium dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Nanotubes%22">Nanotubes</searchLink><br /><searchLink fieldCode="DE" term="%22Desulfurization%22">Desulfurization</searchLink><br /><searchLink fieldCode="DE" term="%22Catalyst+supports%22">Catalyst supports</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+area%22">Surface area</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+synthesis%22">Chemical synthesis</searchLink><br /><searchLink fieldCode="DE" term="%22Raman+spectroscopy%22">Raman spectroscopy</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: High surface area TiO2 nanotubes (Ti-NT) synthesized by alkali hydrothermal method were used as a support for NiW hydrodesulphurization catalyst. Nickel salt of 12-tungstophosphoric acid – Ni3/2PW12O40 was applied as oxide precursor of the active components. The catalyst was characterized by S BET, XRD, UV–vis DRS, Raman spectroscopy, XPS, TPR and HRTEM. The results obtained were compared with those for the NiW catalysts prepared over high surface area titania and alumina supports. A polytungstate phase evidenced by Raman spectroscopy was observed indicating the destruction of the initial heteropolyanion. The catalytic experiments revealed two times higher thiophene conversion on NiW catalyst supported on Ti-NT than those of catalysts supported on alumina and titania. Increased HDS activity of the NiW catalyst supported on Ti-NT could be related to a higher amount of W oxysulfide entities interacting with Ni sulfide particles as consequence of the electronic effects of the Ti-NT observed with XPS analysis. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Applied Surface Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=84596561
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.apsusc.2012.11.001
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 8
        StartPage: 309
    Subjects:
      – SubjectFull: Titanium dioxide
        Type: general
      – SubjectFull: Nanotubes
        Type: general
      – SubjectFull: Desulfurization
        Type: general
      – SubjectFull: Catalyst supports
        Type: general
      – SubjectFull: Surface area
        Type: general
      – SubjectFull: Chemical synthesis
        Type: general
      – SubjectFull: Raman spectroscopy
        Type: general
    Titles:
      – TitleFull: TiO2 nanotubes supported NiW hydrodesulphurization catalysts: Characterization and activity
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Palcheva, R.
      – PersonEntity:
          Name:
            NameFull: Dimitrov, L.
      – PersonEntity:
          Name:
            NameFull: Tyuliev, G.
      – PersonEntity:
          Name:
            NameFull: Spojakina, A.
      – PersonEntity:
          Name:
            NameFull: Jiratova, K.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 15
              M: 01
              Text: Jan2013
              Type: published
              Y: 2013
          Identifiers:
            – Type: issn-print
              Value: 01694332
          Numbering:
            – Type: volume
              Value: 265
          Titles:
            – TitleFull: Applied Surface Science
              Type: main
ResultId 1