Chiral zeolite beta: structure, synthesis, and application

2019 ◽  
Vol 6 (8) ◽  
pp. 1938-1951 ◽  
Author(s):  
Tingting Lu ◽  
Wenfu Yan ◽  
Ruren Xu
Keyword(s):  
Pore Structure ◽  
Asymmetric Catalysis ◽  
Chiral Separations ◽  
Zeolite Beta ◽  
Structure Synthesis ◽  
Potential Applications ◽  
Beta Structure

Pure polymorph-A of zeolite beta with chiral pore structure has potential applications in asymmetric catalysis and chiral separations.

scholarly journals Correction: Chiral zeolite beta: structure, synthesis, and application

2019 ◽  
Vol 6 (8) ◽  
pp. 2209-2210
Author(s):  
Tingting Lu ◽  
Wenfu Yan ◽  
Ruren Xu
Keyword(s):  
Zeolite Beta ◽  
Structure Synthesis ◽  
Beta Structure

Correction for ‘Chiral zeolite beta: structure, synthesis, and application’ by Tingting Lu et al., Inorg. Chem. Front., 2019, DOI: 10.1039/c9qi00574a.

Influence of Steam Activation on Pore Structure and Acidity of Zeolite Beta: An Al K Edge XANES Study of Aluminum Coordination

2002 ◽  
Vol 211 (2) ◽  
pp. 540-547 ◽  
Author(s):  
J.A. van Bokhoven ◽  
D.C. Koningsberger ◽  
P. Kunkeler ◽  
H. van Bekkum
Keyword(s):  
Pore Structure ◽  
Zeolite Beta ◽  
Steam Activation

scholarly journals Chiral porous metal-organic frameworks with dual active sites for sequential asymmetric catalysis

2012 ◽  
Vol 468 (2143) ◽  
pp. 2035-2052 ◽  
Author(s):  
Feijie Song ◽  
Teng Zhang ◽  
Cheng Wang ◽  
Wenbin Lin
Keyword(s):  
Asymmetric Catalysis ◽  
Active Sites ◽  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Dicarboxylic Acids ◽  
Great Promise ◽  
Epoxide Ring ◽  
Potential Applications ◽  
Secondary Building Units ◽  
Metal Organic

Metal-organic frameworks (MOFs) are a class of organic–inorganic hybrid materials built from metal-connecting nodes and organic-bridging ligands. They have received much attention in recent years owing to the ability to tune their properties for potential applications in various areas. Properly designed MOFs with uniform, periodically aligned active sites have shown great promise in catalysing shape-, size-, chemo-, regio- and stereo-selective organic transformations. This study reports the synthesis and characterization of two chiral MOFs (CMOFs 1 and 2 ) that are constructed from Mn-salen-derived dicarboxylic acids [salen is ( R , R )- N , N ′-bis(5- tert -butylsalicylidene)-1,2-cyclohexanediamine], bis(4-vinylbenzoic acid)-salen manganese(III) chloride (H 2 L 4 ) or bis(benzoic acid)-salen manganese(III) chloride (H 2 L 3 ) and [Zn 4 (μ 4 -O)(O 2 CR) 6 ] or [Zn 5 (H 2 O) 2 (μ 3 -OH) 2 (O 2 CR) 8 ] secondary building units (SBUs), respectively. The SBUs in CMOF- 1 are connected by the linear ditopic Mn-salen-derived linkers to construct a fourfold interpenetrated isoreticular MOF (IRMOF) structure with pcu topology. In CMOF- 2 , the Mn-salen centres dimerize in a cross-linking way to form a diamondoid structure with threefold interpenetration. CMOF- 1 was examined for highly regio- and stereo-selective tandem alkene epoxidation/epoxide ring-opening reactions by using the Mn-salen andZn 4 (μ 4 -O)(carboxylate) 6 active sites, respectively. Our work demonstrated the potential utility of chiral MOFs with multiple active sites in the efficient synthesis of complex molecules with excellent regio- and stereo-controls

scholarly journals Chiral covalent organic frameworks: design, synthesis and property

2020 ◽  
Author(s):  
X Han ◽  
C Yuan ◽  
B Hou ◽  
Lujia Liu ◽  
H Li ◽  
...  
Keyword(s):  
Porous Materials ◽  
Asymmetric Catalysis ◽  
Chiral Recognition ◽  
Building Blocks ◽  
Enantioselective Separation ◽  
Structural Studies ◽  
Covalent Organic Frameworks ◽  
Covalent Bonds ◽  
Design Synthesis ◽  
Potential Applications

Covalent organic frameworks (COFs) are constructed using reticular chemistry with the building blocks being connected via covalent bonds and have emerged as a new series of porous materials for multitudinous applications. Most COFs reported to date are achiral, and only a small fraction of COFs with chiral nature are reported. This review covers the recent advances in the field of chiral COFs (CCOFs), including their design principles and synthetic strategies, structural studies, and potential applications in asymmetric catalysis, enantioselective separation, and chiral recognition. Finally, we illustrate the remaining challenges and future opportunities in this field.

scholarly journals Design and performance of a poly(vinyl alcohol)/silk fibroin enzymatically crosslinked semi-interpenetrating hydrogel for a potential hydrophobic drug delivery

RSC Advances ◽  
2019 ◽  
Vol 9 (70) ◽  
pp. 41074-41082 ◽  
Author(s):  
Chunqing Niu ◽  
Xiang Li ◽  
Yiyu Wang ◽  
Xinyu Liu ◽  
Jian Shi ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Sustained Release ◽  
Pore Structure ◽  
Silk Fibroin ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Hydrophobic Drug ◽  
Potential Applications ◽  
And Performance

Enzymatically cross-linked PVA/SF semi-IPN hydrogels with tunable pore structure have potential applications in sustained release of hydrophobic drug.

Metal-Organic Frameworks for Asymmetric Catalysis and Chiral Separations

MRS Bulletin ◽  
2007 ◽  
Vol 32 (7) ◽  
pp. 544-548 ◽  
Author(s):  
Wenbin Lin
Keyword(s):  
Asymmetric Catalysis ◽  
Active Sites ◽  
Heterogeneous Catalysts ◽  
Metal Organic Frameworks ◽  
Building Blocks ◽  
Chiral Separations ◽  
Bridging Ligands ◽  
Guest Molecules ◽  
Pure Compounds ◽  
Metal Organic

Metal-organic frameworks (MOFs) are an interesting class of molecule-based hybrid materials built from metal-connecting points and bridging ligands. MOFs have received much attention, owing to their potential impact on many technological areas, including gas storage, separation, and heterogeneous catalysis. The modular nature of MOFs endows them with facile tunability, and as a result, properly designed MOFs can yield ideal heterogeneous catalysts with uniform active sites through judicious choice of the building blocks. Homochiral MOFs, which can be prepared by numerous approaches (construction from achiral components by seeding with a chiral single crystal, templating with coordinating chiral co-ligands, and building from metal-connecting nodes and chiral bridging ligands), represent a unique class of materials for the economical production of optically pure compounds, whether through asymmetric catalysis or enantioselective inclusion of chiral guest molecules in their porous frameworks. As such, homochiral MOFs promise new opportunities for developing chirotechnology. This contribution provides a brief overview of recent progress in the synthesis of homochiral porous MOFs and their applications in asymmetric catalysis and chiral separations.

scholarly journals Chiral covalent organic frameworks: design, synthesis and property

2020 ◽  
Author(s):  
X Han ◽  
C Yuan ◽  
B Hou ◽  
Lujia Liu ◽  
H Li ◽  
...  
Keyword(s):  
Porous Materials ◽  
Asymmetric Catalysis ◽  
Chiral Recognition ◽  
Building Blocks ◽  
Enantioselective Separation ◽  
Structural Studies ◽  
Covalent Organic Frameworks ◽  
Covalent Bonds ◽  
Design Synthesis ◽  
Potential Applications

Covalent organic frameworks (COFs) are constructed using reticular chemistry with the building blocks being connected via covalent bonds and have emerged as a new series of porous materials for multitudinous applications. Most COFs reported to date are achiral, and only a small fraction of COFs with chiral nature are reported. This review covers the recent advances in the field of chiral COFs (CCOFs), including their design principles and synthetic strategies, structural studies, and potential applications in asymmetric catalysis, enantioselective separation, and chiral recognition. Finally, we illustrate the remaining challenges and future opportunities in this field.

Amine-functionalized metal–organic frameworks: structure, synthesis and applications

RSC Advances ◽  
2016 ◽  
Vol 6 (39) ◽  
pp. 32598-32614 ◽  
Author(s):  
Yichao Lin ◽  
Chunlong Kong ◽  
Liang Chen
Keyword(s):  
Metal Organic Frameworks ◽  
Amine Functionalized ◽  
Structure Synthesis ◽  
Structures And Properties ◽  
Potential Applications ◽  
Metal Organic

We present a review on some recent studies on the syntheses, structures and properties of amine-functionalized MOFs, and highlight the benefits of amino functionality towards potential applications in CO2 capture, membranes and catalysis.

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