Dehydrogenation of propane to propylene over CrOy-CeO2-K2O/γ-Al2O3 catalysts: Effect of cerium content

MOF-Derived Iron Catalysts for Nonoxidative Propane Dehydrogenation

“…Significant research has focused on catalysts based on Cr and Pt as well as alloys of these metals and other metal oxides. − The industrial Cr and Pt catalysts, while being components of highly effective technologies, still have disadvantages such as significant deactivation due to coke formation, which requires intensive catalyst regeneration protocols. The selectivity and stability of catalysts for PDH, in both oxidative and nonoxidative pathways, are pertinent in designing new, less expensive materials because several undesired side reactions, like hydrogenolysis, isomerization, and coke formation, can occur.…”

Propane to olefins tandem catalysis: a selective route towards light olefins production

“…124 Indeed, modifications of CrO x /SiO 2 catalysts have been recently proposed either where chromium oxide is modified with zirconia or ceria, or where the support is different from silica, in order to enhance catalytic performance by tuning Cr redox properties. 125,126 Therefore, compatibility between dehydrogenation and metathesis catalysts (i.e., formation of secondary phases) and anchoring over a suitable support, is another field that to the best of our knowledge has been unexplored so far and is important to study, especially when considering different catalyst contact states in the reactor. The parameters involved prevent us from establishing an overall ''compatibility table'', as this will depend on all the previously discussed factors.…”

Effects of Oxygen Vacancy and Pt Doping on the Catalytic Performance of CeO2 in Propane Dehydrogenation: A First‐Principles Study

“…The dehydrogenation reaction includes the C—H bond cleavage with the generation of H 2 molecules. [ 12 ] However, the catalyst selectivity and stability are still challenging topics to be discussed, especially when dealing with the transition‐metal oxide catalysts. [ 4,13 ] It has been categorically demonstrated in previous studies that the catalytic properties of transition‐metal oxides can be enhanced by creating the oxygen vacancies and doping the structure with stable transition metals such as Mn, Fe, Co, Ni, Cu, Ru, Rh, Pd, Ag, Os, Ir, Pt, and Au.…”

“…Although there is some work done previously over ceria‐based catalysts such as Fe‐CeO 2 , [ 23 ] NbO x /CeO 2 , [ 24 ] and CrO y ‐CeO 2 ‐K 2 O/ γ ‐Al 2 O 3 , [ 12 ] these experimental studies do not provide complete information about the effects of the change in the atomic structure on the adsorption behaviors of the dehydrogenated species and the C—H bond scission. Xiong et al .…”