Propylphenol to Phenol and Propylene over Acidic Zeolites: Role of Shape Selectivity and Presence of Steam

ACS Catalysis ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 7861-7878 ◽  
Author(s):  
Yuhe Liao ◽  
Ruyi Zhong ◽  
Ekaterina Makshina ◽  
Martin d’Halluin ◽  
Yannick van Limbergen ◽  
...  
Keyword(s):  
Shape Selectivity ◽  
Acidic Zeolites

scholarly journals The role of catalyst acidity and shape selectivity on products from the catalytic fast pyrolysis of beech wood

2019 ◽  
pp. 104710 ◽  
Author(s):  
Joseph Socci ◽  
Alireza Saraeian ◽  
Stylianos D. Stefanidis ◽  
Scott W. Banks ◽  
Brent H. Shanks ◽  
...  
Keyword(s):  
Beech Wood ◽  
Fast Pyrolysis ◽  
Shape Selectivity ◽  
Catalytic Fast Pyrolysis ◽  
Catalyst Acidity

Activation and conversion of alkanes in the confined space of zeolite-type materials

2021 ◽  
Author(s):  
Pablo del Campo ◽  
Cristina Martínez ◽  
Avelino Corma
Keyword(s):  
Active Sites ◽  
Molecular Level ◽  
Shape Selectivity ◽  
Confined Space ◽  
Confinement Effects ◽  
Zeolite Type ◽  
Microporous Zeolite

Microporous zeolite-type materials are able to activate and efficiently convert stable C1+ alkanes. This review analyzes, at the molecular level, the role of active sites and the contribution of diffusion, shape-selectivity and confinement effects.

The role of shape selectivity in catalytic fast pyrolysis of lignin with zeolite catalysts

2012 ◽  
Vol 447-448 ◽  
pp. 115-123 ◽  
Author(s):  
Yanqing Yu ◽  
Xiangyu Li ◽  
Lu Su ◽  
Ying Zhang ◽  
Yujue Wang ◽  
...  
Keyword(s):  
Fast Pyrolysis ◽  
Shape Selectivity ◽  
Zeolite Catalysts ◽  
Catalytic Fast Pyrolysis

Role of Shape Selectivity and Catalyst Acidity in the Transformation of Chloromethane into Light Olefins

2015 ◽  
Vol 54 (32) ◽  
pp. 7822-7832 ◽  
Author(s):  
Monica Gamero ◽  
Andres T. Aguayo ◽  
Ainara Ateka ◽  
Paula Pérez-Uriarte ◽  
Ana G. Gayubo ◽  
...  
Keyword(s):  
Shape Selectivity ◽  
Light Olefins ◽  
Catalyst Acidity

scholarly journals Cyclodextrins AS Dominant Chiral Selective Agents in the Capillary Separation Techniques

2021 ◽  
Author(s):  
Zoltán Juvancz ◽  
Rita Bodáné-Kendrovics ◽  
Lajos Szente ◽  
Dóra Maklári
Keyword(s):  
High Efficiency ◽  
Dominant Role ◽  
Shape Selectivity ◽  
Capillary Columns ◽  
Chiral Separations ◽  
Selective Agents ◽  
Chiral Selectivity ◽  
Chemical Background ◽  
Physical And Chemical

This review paper shows the dominant role of the cyclodextrins in the chiral separations using capillary columns (GC, SFC, CE). The cyclodextrins (CDs) have extremely broad chiral selectivity spectra because they have several different chiral recognition sites in various arrangements and various interaction modes. Their chiral selectivity features can further improve with their various substitutions. Their selectivities are moderate therefore they need high efficiency separations (capillary columns) for good chiral resolutions. The shape selectivity of cyclodextrins is also shown with non-chiral isomers too. The utility of the cyclodextrins is demonstrated with several examples based on the personal observations of authors and critical review of literature. The theoretical backgrounds of their chiral recognitions (e.g. H-bond interaction, inclusion, induced fit) are discussed in depth. This paper is not application oriented but is dealing with mostly on the physical and chemical background of separations using CDs.

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