Untitled

Sinev, M. Yu.; Удалова, О. В.; Tulenin, Yury; Margolis, L. Ya.; Vislovskii, V. P.; Valenzuela, Rita X.; Corberán, Vicente Cortés

doi:10.1023/a:1019078108305

Cited by 19 publications

(8 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second approach is much preferable, which is, however, accompanied by many difficulties due to the high reactivity of acrolein compared to that of propane. Some oxides have recently been reported to catalyze the direct oxidation of propane to acrolein [18][19][20][21][22][23][24][25][26][27][28][29].…”

Section: Direct Oxidation Of Propane To Acroleinmentioning

confidence: 99%

See 1 more Smart Citation

Strategy in achieving propane selective oxidation over multi-functional Mo-based oxide catalysts

Vitry

Dubois²,

Ueda

2004

Journal of Molecular Catalysis A: Chemical

View full text Add to dashboard Cite

Section: Direct Oxidation Of Propane To Acroleinmentioning

confidence: 99%

“…The work by Sinev et al [27] follows a similar methodology. They have reported a high per pass yield of acrolein (11.3%) from propane by using two consecutive layers of catalysts in the same reactor.…”

Section: Direct Oxidation Of Propane To Acroleinmentioning

confidence: 99%

Strategy in achieving propane selective oxidation over multi-functional Mo-based oxide catalysts

Vitry

Dubois²,

Ueda

2004

Journal of Molecular Catalysis A: Chemical

View full text Add to dashboard Cite

“…Gas-phase reactions between the catalyst beds introduce the possibility for further product enhancement. Sinev et al proposed in their investigation of the propane to acrolein reaction pathway that there is an intermediate formed in the propane ODH reaction that is more selective on the acrolein catalyst than propylene. This improvement of selectivity toward acrolein is made by merely enabling the intermediate to be present at the second catalyst bed.…”

Section: Parametric Sensitivitymentioning

confidence: 99%

“…The necessity for different reaction conditions for each reactor makes it more advantageous to utilize two separate catalysts. Interesting results obtained by Sinev et al showed that acrolein yields could be increased to 25% by combining ODH and POA catalysts in consecutive reaction zones. It was hypothesized from these results that an intermediate is formed over the ODH catalyst that produces a yield to acrolein superior than that of propylene over the POA catalyst.…”

Section: Introductionmentioning

confidence: 99%

Yield Improvements in Membrane Reactors for Partial Oxidation Reactions

and

Wolf

2006

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Implementing a distributive membrane reactor for partial oxidation reactions, specifically the oxidative dehydrogenation (ODH) of propane and the partial oxidation (POx) of propylene to acrolein, is the focus of this theoretical investigation. The reactor model in this study demonstrates that the membrane reactor increases the yield of the desired product, propylene or acrolein, while suppressing the yield of COx. The membrane reactor accomplishes this by lowering the partial pressure of a reactant, oxygen, to suppress the full oxidation reaction that has a higher order dependence on oxygen. In addition to improvements for these individual reactions, the reactor model is expanded to include two different catalyst beds, the ODH reaction and the POx reaction. The dual-bed membrane reactor design improved the yield of acrolein compared to that of a dual-bed fixed bed reactor. The distributive membrane reactor is a useful tool to further enhance the performance of these POx catalysts.

show abstract

“…Doing so, the reaction lightoff 41 could occur in the first layer, while conversion proceeds in subsequent layers exhibiting improved selectivity. This kind of configuration was already proposed in the past for selective oxidations of methane 42,43 and propane, 44,45 in which a first layer of active catalyst that favors the generation of reactive radicals is combined with a second layer for radical stabilization and selectivity improvement. It is known that the key reactions in OCM involve radicals which react further in the gas phase, 46,47 thus rendering the investigation of layered beds particularly interesting.…”

Section: Introductionmentioning

confidence: 99%

Productivity Enhancement for the Oxidative Coupling of Methane in Adiabatic Layered-Bed Reactors

et al. 2021

View full text Add to dashboard Cite

Ethylene production via oxidative coupling of methane (OCM) in adiabatic packed-bed reactors is a promising route within the context of natural gas valorization. However, the high exothermicity of OCM imposes low inlet temperatures and, hence, low space-time yields. Layered-bed reactors are proposed in the present work as a potential alternative to mitigate this issue. In this modeling investigation, a first layer of active Sr/La2O3 catalyst is followed by a second layer of more selective NaMnW/SiO2 catalyst. Optimized bed compositions and operating conditions are shown to lead to up to a 10 times higher space-time yield compared to a single-catalyst bed. The achieved values of ca. 15 molC2+ s–1 m r –3 are comparable to conventional values from steam cracking of ethane, suggesting layered-bed adiabatic configurations as a promising way forward for intensified ethylene production via OCM.

show abstract

Untitled

Cited by 19 publications

References 6 publications

Strategy in achieving propane selective oxidation over multi-functional Mo-based oxide catalysts

Strategy in achieving propane selective oxidation over multi-functional Mo-based oxide catalysts

Yield Improvements in Membrane Reactors for Partial Oxidation Reactions

Productivity Enhancement for the Oxidative Coupling of Methane in Adiabatic Layered-Bed Reactors

Contact Info

Product

Resources

About