Preparation, characterization and catalytic behavior for propane partial oxidation of Ga-promoted MoVTeO catalysts

Abstract

ElsevierHernández Morejudo, S.; Masso Ramírez, A.; García-González, E.; Concepción Heydorn, P.; López Nieto, JM. (2015). Preparation, characterization and catalytic behavior for propanepartial oxidation of Ga-promoted MoVTeO catalysts. Applied Catalysis A: General. 504:51-61. doi:10.1016/j.apcata.2014.12.039. The results showed that the addition of small amount of gallium significantly increase the selectivity to acrylic acid (AA) at low propane conversion. However, at high propane conversion, the selectivity to AA strongly depends on both the catalyst composition and the gallium incorporation method. The higher selectivity to acrylic acid over Ga-containing MoVTeO catalysts has been related to: i) structural changes in the M1 phase by the incorporation of Ga 3+ into the octahedral structural framework, and/or ii) incorporation of Ga 3+ species on the catalyst surface thus modifying catalysts acid properties.

The Low‐Temperature Oxidation of Propane by using H2O2 and Fe/ZSM‐5 Catalysts: Insights into the Active Site and Enhancement of Catalytic Turnover Frequencies

“…Direct catalytic routes for the synthesis of isopropanol, acrylic acid, acrolein and acetone have been reported, with gas‐phase operation favoured owing to the physical properties of propane. The low‐temperature oxidation of n ‐alkanes by using ZSM‐5 catalysts and H 2 O 2 has been studied previously, with activation of the oxidant and alkane substrate being attributed to extra framework dimeric μ‐oxo–hydroxo iron sites .…”

Rhodium‐Catalyzed Methanation and Methane Steam Reforming Reactions on Rhodium–Perovskite Systems: Metal–Support Interaction

“…Recent focus in catalysis is increasingly put on the use of more complex catalytic systems, which offer a higher possibility of individually tailoring their catalytic properties by dedicated pretreatments . Such systems include mixed oxide systems or (doped) ternary oxide compounds . Especially the latter offer a tremendous variability in structures and chemical composition .…”

“…Such systems include mixed oxide systems or (doped) ternary oxide compounds . Especially the latter offer a tremendous variability in structures and chemical composition . One class of materials for which this advantage is particularly obvious are perovskite systems.…”

Effect of feedstock impurities on activity and selectivity of V-Mo-Nb-Te-Ox catalyst in ethane oxidative dehydrogenation

“…The quaternary V-Mo-Nb-Te-O x catalytic system being widely studied in propane oxidation/ammoxidation [1][2][3][4][5][6][7] seems to be the most promising also for ethane SOD. V-Mo-Nb-Te-O x catalysts exceed noticeably other mixed oxides, such as NiO/MgO [8], Cr-V-O [9] or CeVO 4 [10], in both activity and selectivity of ethane SOD.…”