Structural, surface, and catalytic properties of bismuth molybdovanadates containing foreign atoms. V. Oxidative dehydrogenation of 1-butene on iron-containing bismuth molybdovanadate catalysts

Journal Article · Tue Mar 01 00:00:00 EST 1994 · Journal of Catalysis; (United States)

DOI:https://doi.org/10.1016/0021-9517(94)90015-9· OSTI ID:7034921

De Rossi, S; Lo Jacono, M; Gardini, M; Porta, P ^[1]

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1. Universita di Roma, Rome (Italy)

The oxidative dehydrogenation of 1-butene has been studied over catalysts with the scheelite structure and general formula Bi[sub 1-x/3]Me[sub y][V[sub 1-x]Mo[sub x-y]Fe[sub y]]O[sub 4] with x = 0.45; y = 0, 0.10, or 0.15; Me = Fe or Bi. Experiments were carried out in a pulse microreactor in the temperature range 473-673K. The trend of total conversion with catalyst composition is similar to that found previously for the same catalyst composition is similar to that found previously for the same catalysts in propene oxidation. Moreover, the total conversion was identical in the presence and in the absence of gaseous oxygen in the pulse (first pulse with 1-butene alone). On the other hand, the production of butadiene was markedly different from that of acrolein in the propene reaction for the catalyst in which the cationic vacancies were completely filled with bismuth ions (y = 0.15, Me = Bi). This finding points to a differing importance of the cationic vacancies depending on whether the selective reaction occurs with oxygen insertion. Also the oxidation to isomerization ratios and the reduction-oxidation properties changed with catalyst composition. The results are discussed in terms of participation of cationic vacancies and iron ions in the steps of the allylic oxidation. 39 refs., 7 figs., 4 tabs.

• OSTI ID: 7034921
• Journal Information: Journal of Catalysis; (United States), Vol. 146:1; ISSN 0021-9517
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
02 PETROLEUM
10 SYNTHETIC FUELS
BISMUTH COMPOUNDS
CATALYTIC EFFECTS
BUTENES
DEHYDROGENATION
OXIDATION
IRON COMPOUNDS
MOLYBDATES
VANADATES
CATALYSTS
ISOMERIZATION
STOICHIOMETRY
STRUCTURAL CHEMICAL ANALYSIS
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0400-1000 K
VACANCIES
ALKENES
CHEMICAL REACTIONS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
HYDROCARBONS
MOLYBDENUM COMPOUNDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POINT DEFECTS
REFRACTORY METAL COMPOUNDS
TEMPERATURE RANGE
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
400201* - Chemical & Physicochemical Properties
020400 - Petroleum- Processing
100200 - Synthetic Fuels- Production- (1990-)