TY - JOUR
T1 - The effect of supported Rh, Ru, Pt or Ir nanoparticles on activity and selectivity of ZrO2-based catalysts in non-oxidative dehydrogenation of propane
AU - Perechodjuk, Anna
AU - Zhang, Yaoyuan
AU - Kondratenko, Vita A.
AU - Rodemerck, Uwe
AU - Linke, David
AU - Bartling, Stephan
AU - Kreyenschulte, Carsten R.
AU - Jiang, Guiyuan
AU - Kondratenko, Evgenii V.
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/7/25
Y1 - 2020/7/25
N2 - A series of catalysts on the basis of ZrO2, LaZrOx and YZrOx with supported Rh, Ru, Pt or Ir nanoparticles (NPs) were prepared. They were tested in the non-oxidative dehydrogenation of propane (PDH) to elucidate the effects of (i) the kind of supported metal and its loading, (ii) the size (1 nm or 5 nm) of NPs, (iii) metal oxide promoter for ZrO2 and (iv) reaction temperature on PDH performance. Although the metals did not directly participate in propene formation, they improve catalyst activity through (i) promotion of Zrcus (cus means coordinatively unsaturated) formation and (ii) acceleration of hydrogen formation. The kind of metal was also established to be decisive for propene adsorption. The latter property has a negative effect on catalyst activity and propene selectivity. The most active Rh/YZrOx catalyst with 0.05 wt% Rh revealed about 1.6 times higher propene formation rate than a commercial-like K-CrOx/Al2O3 or the state-of-the-art Ru/YZrOx.
AB - A series of catalysts on the basis of ZrO2, LaZrOx and YZrOx with supported Rh, Ru, Pt or Ir nanoparticles (NPs) were prepared. They were tested in the non-oxidative dehydrogenation of propane (PDH) to elucidate the effects of (i) the kind of supported metal and its loading, (ii) the size (1 nm or 5 nm) of NPs, (iii) metal oxide promoter for ZrO2 and (iv) reaction temperature on PDH performance. Although the metals did not directly participate in propene formation, they improve catalyst activity through (i) promotion of Zrcus (cus means coordinatively unsaturated) formation and (ii) acceleration of hydrogen formation. The kind of metal was also established to be decisive for propene adsorption. The latter property has a negative effect on catalyst activity and propene selectivity. The most active Rh/YZrOx catalyst with 0.05 wt% Rh revealed about 1.6 times higher propene formation rate than a commercial-like K-CrOx/Al2O3 or the state-of-the-art Ru/YZrOx.
KW - Metal oxide dopant
KW - Nanoparticle size
KW - Non-oxidative propane dehydrogenation
KW - Propene
KW - Reducibility
KW - Zirconia
KW - ZrO-Based material
UR - http://www.scopus.com/inward/record.url?scp=85087751054&partnerID=8YFLogxK
U2 - 10.1016/j.apcata.2020.117731
DO - 10.1016/j.apcata.2020.117731
M3 - Article
AN - SCOPUS:85087751054
SN - 0926-860X
VL - 602
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
M1 - 117731
ER -