Oxidation and Ammoxidation of Propylene over Bismuth Molybdate Catalyst

Callahan, James L.; Grasselli, Robert K.; Milberger, Ernest C.; Strecker, Hermann

doi:10.1021/i360034a003

Cited by 173 publications

(91 citation statements)

References 8 publications

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“…A less obvious advantage is that the heat release for the highly exothermic partial oxidation reaction is split between two vessels, reducing the cost of cooling. The two-fluidized-reactor, circulating-catalyst system was first studied experimentally in the late 1960's [59]. It was not adopted for commercial use because the advantages just mentioned are offset by the cost of circulating large amounts of catalyst [ 59 ].…”

Section: Industrial-scale Equipmentmentioning

confidence: 99%

Periodic operation of catalytic reactors—introduction and overview

1995

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Section: Industrial-scale Equipmentmentioning

confidence: 99%

Periodic operation of catalytic reactors—introduction and overview

1995

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“…Significant propylene conversion was observed at temperatures higher than 300 °C on all the catalysts. Bi2MoO6 based catalysts are known to provide oxygen from the lattice for oxidation and at the same time harness oxygen from the feed gas to get re-oxidized [1]. The rate of this cycle is faster at higher temperatures and therefore, the higher yield of oxygenated products at higher temperatures.…”

Section: Catalytic Activitymentioning

confidence: 99%

“…Especially the three phases, α-Bi2Mo3O12, β-Bi2Mo2O9, and γ-Bi2MoO6, have remained focal points in the study of partial oxidation of light hydrocarbons like propylene for many years. The mixed metal oxides containing Bi and Mo as base components have been the mainstay of industrial catalysts for partial oxidation [1]. Researchers have thoroughly studied the mixtures of aforementioned three phases as a single catalyst system to study the synergy effects [2,3].…”

Section: Introductionmentioning

confidence: 99%

Partial Oxidation of Propylene over as Prepared and Acid Enriched Bi2Mo1-xWxO6 System

Parab

Naik

Salker

2017

Bull. Chem. React. Eng. Catal.

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The compounds Bi2Mo1-xWxO6 (x = 0.0, 0.2, and 0.4) were obtained through a Citrate sol-gel process. Thermogravimetric differential thermal analysis (TG-DTA), X-ray diffraction (XRD), Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) techniques were used for characterization. Reitveld refinement of the XRD data confirmed the crystal structure of all the compositions to be orthorhombic, having Pca21 space group. XPS studies indicated the presence of +6 as well as +4 oxidation state for Mo. Surface acid enrichment of all the catalysts was done and monitored by NH3-TPD studies. Partial oxidation of propylene was studied over all the compounds. The W doping was found to increase the catalytic activity. Moreover, as-prepared catalysts and acid enriched catalysts were compared for their catalytic activity wherein, acid-enriched catalysts showed the improved conversion of propylene without hampering the product selectivity profile.

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“…One of challenges for the process is how to achieve a high selectivity for the aimed products, i.e., olefins and oxygenates, because they are usually more reactive than the feed materials, i.e., alkanes and easier to be deeply oxidized to CO x by O 2 . One way to overcome these difficulties is to use lattice oxide (O 2) ) as oxidant, such as in a periodic shift reactor, which has been used in the ammoxidation of propylene to acrylonitrile [117] and of metaxylene to isophthalonitrile [118]. In this way, a high selectivity of the target product was achieved due to the utilization of lattice oxide (O 2) ).…”

Section: Ode and Odp In Oxygen Permeable Membrane Reactormentioning

confidence: 99%

Development and Application of Oxygen Permeable Membrane in Selective Oxidation of Light Alkanes

et al. 2005

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In this paper, oxygen permeable membrane used in membrane reactor for selective oxidation of alkanes will be discussed in detail. The recent developments for the membrane materials will be presented, and the strategy for the selection of the membrane materials will be outlined. The main applications of oxygen permeable membrane in selective oxidation of light alkanes will be summarized, which includes partial oxidation of methane (POM) to syngas and partial oxidation of heptane (POH) to produce H 2 , oxidative coupling of methane (OCM) to C 2 , oxidative dehydrogenation of ethane (ODE) to ethylene and oxidative dehydrogenation of propane (ODP) to propylene. Achievements for the membrane material developments and selective oxidation of light alkanes in membrane reactor in our group are highlighted.

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Oxidation and Ammoxidation of Propylene over Bismuth Molybdate Catalyst

Cited by 173 publications

References 8 publications

Periodic operation of catalytic reactors—introduction and overview

Periodic operation of catalytic reactors—introduction and overview

Partial Oxidation of Propylene over as Prepared and Acid Enriched Bi2Mo1-xWxO6 System

Development and Application of Oxygen Permeable Membrane in Selective Oxidation of Light Alkanes

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