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Daniell, Wayne; Ponchel, A.; Kuba, Stefan; Anderle, F G; Weingand, Thomas; Gregory, Duncan H.; Knözinger, Helmut

doi:10.1023/a:1016399315511

Cited by 91 publications

(116 citation statements)

References 33 publications

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“…Furthermore, we could distinguish two smaller peaks at 400 and 419 • C for the 9.2% Re catalyst (Fig. 4A, pattern d) which suggests that different Re 7+ species could be present in that sample [33,34]. Hydrogen consumption measurements indicate nearly complete reduction of the Re 7+ species into metallic Re o for the 3% and 9.2% Re catalysts, while only 79% for the 1% Re catalyst.…”

Section: Catalystmentioning

confidence: 89%

Bimetallic Ru-Re/γ-Al2O3 catalysts for the catalytic combustion of propane: Effect of the Re addition

Baranowska

Okal

2015

Applied Catalysis A: General

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Section: Catalystmentioning

confidence: 89%

Bimetallic Ru-Re/γ-Al2O3 catalysts for the catalytic combustion of propane: Effect of the Re addition

Baranowska

Okal

2015

Applied Catalysis A: General

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“…In the case of MoVAlO x -4, the V content was more than that of Mo as seen in Table 1. The [16]. The bands can also be partly attributed to the presence of a bulk V 2 O 5 especially for MoVAlO x -4 catalyst as characteristic bands of V 2 O 5 appear at 282, 405, 695 and 993 cm -1 [13].…”

Section: Raman Spectroscopymentioning

confidence: 91%

Selective Oxidation of Ethane Over Mo–V–Al–O Oxide Catalysts: Insight to the Factors Affecting the Selectivity of Ethylene and Acetic Acid and Structure-activity Correlation Studies

et al. 2007

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Catalysts of general formula, MoVAlO x were prepared with the initial elemental composition of 1:0.34:0.167 (Mo:V:Al) at a pH value in the range of 1-4. The elemental analysis showed that the final composition of the catalysts is pH dependant. The performance of the catalysts was tested for selective oxidation of ethane to give ethylene and acetic acid. While all of them were active for ethane oxidation with a moderate conversion, the catalyst prepared at pH 2 showed a highest activity with 23% ethane conversion and a combined selectivity of 80.6% to ethylene and acetic acid. The catalyst prepared at pH 4 was least selective to ethylene and acetic acid. Various techniques like powder XRD, SEM, Raman, UV-Vis and EPR were used to characterize the catalysts and to identify the active phases responsible for the selective oxidation of ethane. The powder XRD data showed that the catalysts prepared at pH 1 and 2 contain mainly of MoO 3 and MoV 2 O 8 along with traces of Mo 4 O 11 . The amount of MoO 3 was slightly higher in the catalyst prepared at pH 1. However, the catalyst prepared at pH 3 contains mainly of MoV 2 O 8 with no trace of MoO 3 . The catalyst prepared at pH 4 showed V 2 O 5 as the major phase along with MoVAlO 4 phase. The Raman data corroborated the XRD results. EPR and UV-Vis studies indicated the presence of traces of V 4+ in pH 1 and 2 catalysts and significant amount of Mo 5+ in all the catalysts. Thus, the high activity and selectivity to ethylene and acetic acid are attributed to the presence of MoV 2 O 8 phase and other reduced species like Mo 4 O 11 phase supported on MoO 3 . The presence of V and Mo ions in a partially reduced form seems to play a crucial role in the selective oxidation of ethane.

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“…However, the catalytic behavior of CeO 2 can be modified by the addition of dopants that interact with the ceria support [1]. The presence of vanadia on ceria affords interesting performances for oxidative dehydrogenation (ODH) reactions [2,3]. In general, supported vanadia catalysts are one of the most active and attractive catalysts for light alkane ODH [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Nature of the vanadia?ceria interface in V5+/CeO2 catalysts and its relevance for the solid-state reaction toward CeVO4 and catalytic properties

Martı́nez-Huerta¹

2004

Journal of Catalysis

144

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Untitled

Cited by 91 publications

References 33 publications

Bimetallic Ru-Re/γ-Al2O3 catalysts for the catalytic combustion of propane: Effect of the Re addition

Bimetallic Ru-Re/γ-Al2O3 catalysts for the catalytic combustion of propane: Effect of the Re addition

Selective Oxidation of Ethane Over Mo–V–Al–O Oxide Catalysts: Insight to the Factors Affecting the Selectivity of Ethylene and Acetic Acid and Structure-activity Correlation Studies

Nature of the vanadia?ceria interface in V5+/CeO2 catalysts and its relevance for the solid-state reaction toward CeVO4 and catalytic properties

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