Effect of Support Modification on the Physicochemical Properties of a NiPd/Al2O3 Catalyst for the Autothermal Reforming of Methane Full article
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Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2015, Volume: 56, Number: 3, Pages: 394-402 Pages count : 9 DOI: 10.1134/S0023158415030064 | ||||||
| Tags | Hydrogen Uptake; Modifier Content; NiPd; Hexaaluminate; High Resolution Transmission Electron Microscopy | ||||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | European Commission | 262840 FP7-NMP-2010-LARGE-4 DEMCAMER |
Abstract:
For the development of effective catalysts for the autothermal reforming of methane, the NiPd catalysts were synthesized based on modified aluminum oxide and their physicochemical properties were studied using X-ray diffraction analysis, low-temperature nitrogen adsorption, transmission electron microscopy, and temperature-programmed reduction with hydrogen. It was found that the variation of modifying components (CeO2, ZrO2, La2O3, Ce0.5Zr0.5O2, and La2O3/Ce0.5Zr0.5O2) and their concentrations (10–30 wt %) makes it possible to regulate the particle size of NiO, the composition of a Ni-containing phase (NiO, La2NiO4, NiAl2O4, or Ni-La-Al-O) and the redox properties of nickel ions. It was shown that the average particle size of NiO increased from 6.7 to 17.5 nm in the following order of supports: La2O3/Al2O3 < La2O3/Ce0.5Zr0.5O2/Al2O3 < Al2O3 < Ce0.5Zr0.5O2/Al2O3 < CeO2/Al2O3 < ZrO2/Al2O3. On the introduction of the modifying oxides CeO2 and ZrO2 into aluminum oxide, the fraction of nickel in the composition of NiAl2O4 decreased and, therefore, the fraction of difficult-to-reduce Ni2+ decreased. The addition of La2O3 and La2O3/Ce0.5Zr0.5O2 strengthened the interaction of nickel cations with the support up to the formation of Ni-La-Al-O and La2NiO4 phases and increased the fraction of difficult-to-reduce Ni2+ ions. The resulting NiPd catalysts are promising in the catalysis of the autothermal reforming of methane.
Cite:
Ismagilov I.Z.
, Matus E.V.
, Nefedova D.V.
, Kuznetsov V.V.
, Yashnik S.A.
, Kerzhentsev M.A.
, Ismagilov Z.R.
Effect of Support Modification on the Physicochemical Properties of a NiPd/Al2O3 Catalyst for the Autothermal Reforming of Methane
Kinetics and Catalysis. 2015. V.56. N3. P.394-402. DOI: 10.1134/S0023158415030064 WOS Scopus РИНЦ AN OpenAlex
Effect of Support Modification on the Physicochemical Properties of a NiPd/Al2O3 Catalyst for the Autothermal Reforming of Methane
Kinetics and Catalysis. 2015. V.56. N3. P.394-402. DOI: 10.1134/S0023158415030064 WOS Scopus РИНЦ AN OpenAlex
Original:
Исмагилов И.З.
, Матус Е.В.
, Нефедова Д.В.
, Кузнецов В.В.
, Яшник С.А.
, Керженцев М.А.
, Исмагилов З.Р.
Влияние модифицирования носителя на физико-химические свойства NiPd/Al2O3 катализатора автотермического риформинга метана
Кинетика и катализ. 2015. Т.56. №3. С.397-406. DOI: 10.7868/S0453881115030065 РИНЦ OpenAlex
Влияние модифицирования носителя на физико-химические свойства NiPd/Al2O3 катализатора автотермического риформинга метана
Кинетика и катализ. 2015. Т.56. №3. С.397-406. DOI: 10.7868/S0453881115030065 РИНЦ OpenAlex
Dates:
| Submitted: | Oct 28, 2014 |
| Published print: | May 1, 2015 |
| Published online: | Jun 17, 2015 |
Identifiers:
| Web of science: | WOS:000356369200020 |
| Scopus: | 2-s2.0-84933499566 |
| Elibrary: | 24053698 |
| Chemical Abstracts: | 2015:1022046 |
| OpenAlex: | W629116501 |