Zinc Influence on the Formation and Properties of Pt/Mg(Zn)AlOx Catalysts Synthesized from Layered Hydroxides Full article
| Journal |
Journal of Catalysis
ISSN: 0021-9517 , E-ISSN: 1090-2694 |
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| Output data | Year: 2016, Volume: 341, Pages: 13-23 Pages count : 11 DOI: 10.1016/j.jcat.2016.06.006 | ||||||||||||||
| Tags | EXAFS, Platinum catalysts, Propane dehydrogenation, XPS, Zinc containing layered double hydroxides | ||||||||||||||
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Abstract:
Layered double hydroxides (LDH) containing Al3+, Mg2+ and Zn2+ cations with the ratios of Zn/(Mg + Zn)
= 0, 0.05, 0.1, 0.2, 0.5, 0.7, and 1.0 were synthesized. The effect of zinc content on the phase composition
of LDH and on the structural parameters, textural characteristics and acid–base properties of the corresponding
mixed oxides were studied. This type of supports was used to obtain the non-acid platinum Pt/
Mg(Zn)AlOx catalysts. The formation of supported platinum particles, their composition, dispersion and
electronic state were examined by means of TPR, TEM, XPS, and EXAFS. The possibility to obtain the
bimetallic PtZn particles, whose structure and strength of interaction with the support depend on the
zinc content of the support, was demonstrated. It was found that the presence of zinc atoms in the platinum
environment decreases the particle size of active metal and stabilizes platinum in the active metallic
state ensuring a high activity of the catalyst in dehydrogenation of propane with the selectivity for
propylene above 99%.
Cite:
Belskaya O.B.
, Stepanova L.N.
, Gulyaeva T.I.
, Erenburg S.B.
, Trubina S.V.
, Kvashnina K.
, Nizovskii A.I.
, Kalinkin A.V.
, Zaikovskii V.I.
, Bukhtiyarov V.I.
, Likholobov V.A.
Zinc Influence on the Formation and Properties of Pt/Mg(Zn)AlOx Catalysts Synthesized from Layered Hydroxides
Journal of Catalysis. 2016. V.341. P.13-23. DOI: 10.1016/j.jcat.2016.06.006 WOS Scopus РИНЦ OpenAlex ANCAN
Zinc Influence on the Formation and Properties of Pt/Mg(Zn)AlOx Catalysts Synthesized from Layered Hydroxides
Journal of Catalysis. 2016. V.341. P.13-23. DOI: 10.1016/j.jcat.2016.06.006 WOS Scopus РИНЦ OpenAlex ANCAN
Dates:
| Submitted: | Mar 2, 2016 |
| Accepted: | Jun 6, 2016 |
| Published online: | Jun 30, 2016 |
| Published print: | Sep 1, 2016 |
Identifiers:
| ≡ Web of science: | WOS:000382408300002 |
| ≡ Scopus: | 2-s2.0-84976578874 |
| ≡ Elibrary: | 26835589 |
| ≡ OpenAlex: | W2463231159 |
| ≡ Chemical Abstracts: | 2016:1014029 |
| ≡ Chemical Abstracts (print): | 165:317373 |