Nanosized and delayered zeolitic materials for the liquid-phase Beckmann rearrangement of cyclododecanone oxime

Botella, Pablo; Corma, Avelino; Iborra, Sara; Montón, Raquel; Rodríguez, Isabel; Costa, V. Da

doi:10.1016/j.jcat.2007.05.020

Cited by 41 publications

(24 citation statements)

References 36 publications

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“…14) [137]. Hierarchical ITQ-2 zeolite made by postdealumination of MCM-22 layered zeolite precursor was also reported very active in Beckmann rearrangement of larger size of oxime such as cyclododecanone oxime [138]. In this reaction, the lactam yield at 130°C was significantly higher when ITQ-2 was applied as catalysts than when either MCM-41 or conventional BEA zeolite were used.…”

Section: Other Catalytic Reactionsmentioning

confidence: 82%

Hierarchically Nanoporous Zeolites and Their Heterogeneous Catalysis: Current Status and Future Perspectives

Somorjai

2014

Catal Lett

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The research field of hierarchically nanoporous zeolites has been growing at an enormous pace over the past decades. Hierarchically nanoporous zeolites have versatile structural properties such as high surface area and large pore volume that can alleviate diffusional limitations of conventional zeolites with solely microporous framework. In this review, various synthesis strategies to hierarchically nanoporous zeolites and their structural advantages in catalytic reactions will be reviewed. In the first part, many novel synthetic approaches for hierarchically nanoporous zeolites such as post-demetallation, softtemplating, hard-templating, and dual-pore-generating surfactant-directed methods will be introduced. In the second part, catalytic applications of hierarchically nanoporous zeolites on various chemical reactions involving isomerization, cracking, alkylation and oxidation will be discussed. The present comprehensive review will provide future opportunities and perspectives on the research of hierarchically nanoporous zeolites including their applications to catalytic reactions.

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Section: Other Catalytic Reactionsmentioning

confidence: 82%

Hierarchically Nanoporous Zeolites and Their Heterogeneous Catalysis: Current Status and Future Perspectives

Somorjai

2014

Catal Lett

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“…17 This has an impact on the performance of zeolites in applications such as catalysis and separation. 18,19 Additionally, this development has led to developments of new synthesis strategies yielding nanosize materials with narrow particle size distributions.…”

Section: Microwave Heating Approachmentioning

confidence: 99%

Microwave-assisted synthesized SAPO-56 as a catalyst in the conversion of CO2 to cyclic carbonates

et al. 2013

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“…Song et al [10,11] reported the effects of crystal size on adsorption properties of toluene on the zeolite, in which zeolites with crystal sizes less than 100 nm have a higher adsorption capacity for toluene. Botella et al [42] reported the Beckmann rearrangement reaction over nano-beta zeolite, where the reactions proceed mainly on the external surface of the zeolite. Serrano et al [43] reported catalytic cracking of polyolefins over nano-ZSM-5 zeolite.…”

Section: Catalytic Reactionmentioning

confidence: 99%

Size-Controlled Synthesis of Nano-Zeolites and Their Application to Light Olefin Synthesis

et al. 2012

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For the application of zeolites as heterogeneous catalysts, low diffusion resistance for hydrocarbons within the micropore is essential for improving product selectivity and catalyst lifetime. This problem has been overcome by reducing the crystal size. This review introduces size-controlled preparation of nano-sized zeolites via hydrothermal synthesis in water/surfactant/organic solvent (emulsion method) and their application to heterogeneous catalysts. The ionicity of the hydrophilic group in surfactant molecules and the concentration of the Si source affected the crystallinity and morphology of zeolites prepared using the emulsion method. When using a non-ionic surfactant, mono-dispersed silicalite-1 nanocrystals approximately 60 nm in diameter were successfully prepared. Nano-and macro-ZSM-5 zeolites with crystal sizes of approximately 150-200 nm and 1.5 µm, respectively, were prepared and applied to n-hexane cracking and acetone-to-olefin reactions to investigate the effect of zeolite crystal size on catalytic stability and light olefin yield. Application of nano-zeolite to light olefin production was effective in achieving faster mass transfer of hydrocarbon molecules within the micropore, which led to improvements in olefin yields and catalyst lifetime.

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Nanosized and delayered zeolitic materials for the liquid-phase Beckmann rearrangement of cyclododecanone oxime

Cited by 41 publications

References 36 publications

Hierarchically Nanoporous Zeolites and Their Heterogeneous Catalysis: Current Status and Future Perspectives

Hierarchically Nanoporous Zeolites and Their Heterogeneous Catalysis: Current Status and Future Perspectives

Microwave-assisted synthesized SAPO-56 as a catalyst in the conversion of CO2 to cyclic carbonates

Size-Controlled Synthesis of Nano-Zeolites and Their Application to Light Olefin Synthesis

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