scholarly journals Tuneable nature of metal organic frameworks as heterogeneous solid catalysts for alcohol oxidation

2017 ◽  
Vol 53 (79) ◽  
pp. 10851-10869 ◽  
Author(s):  
Amarajothi Dhakshinamoorthy ◽  
Abdullah M. Asiri ◽  
Hermenegildo Garcia
Keyword(s):  
Metal Nanoparticles ◽  
Metal Organic Frameworks ◽  
Alcohol Oxidation ◽  
Metal Centre ◽  
Feature Article ◽  
Solid Catalysts ◽  
Recent Developments ◽  
Metal Organic ◽  
Heterogeneous Solid

This Feature article describes on the recent developments in the use of metal organic frameworks as heterogeneous solid catalysts for the selective alcohol oxidation by either tuning the actives sites around the metal centre, or anchoring them on the ligands or using the pores to embed metal nanoparticles inside.

scholarly journals Metal organic frameworks as solid catalysts for liquid-phase continuous flow reactions

2020 ◽  
Vol 56 (1) ◽  
pp. 26-45 ◽  
Author(s):  
Amarajothi Dhakshinamoorthy ◽  
Sergio Navalon ◽  
Abdullah M. Asiri ◽  
Hermenegildo Garcia
Keyword(s):  
Liquid Phase ◽  
Continuous Flow ◽  
Metal Organic Frameworks ◽  
Flow Conditions ◽  
Feature Article ◽  
Solid Catalysts ◽  
Recent Developments ◽  
Metal Organic

This Feature Article describes the recent developments in the use of MOFs as catalysts under continuous flow conditions illustrating that these materials can meet the required stability.

scholarly journals Metal-Organic Frameworks as Versatile Heterogeneous Solid Catalysts for Henry Reactions

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1445
Author(s):  
Francisco G. Cirujano ◽  
Rafael Luque ◽  
Amarajothi Dhakshinamoorthy
Keyword(s):  
Active Sites ◽  
Heterogeneous Catalysts ◽  
Final Section ◽  
Metal Organic Frameworks ◽  
Henry Reaction ◽  
Solid Catalysts ◽  
Wide Range ◽  
Metal Organic ◽  
Materials Used ◽  
Heterogeneous Solid

Metal–organic frameworks (MOFs) have become one of the versatile solid materials used for a wide range of applications, such as gas storage, gas separation, proton conductivity, sensors and catalysis. Among these fields, one of the more well-studied areas is the use of MOFs as heterogeneous catalysts for a broad range of organic reactions. In the present review, the employment of MOFs as solid catalysts for the Henry reaction is discussed, and the available literature data from the last decade are grouped. The review is organized with a brief introduction of the importance of Henry reactions and structural properties of MOFs that are suitable for catalysis. The second part of the review discusses the use of MOFs as solid catalysts for the Henry reaction involving metal nodes as active sites, while the third section provides data utilizing basic sites (primary amine, secondary amine, amides and urea-donating sites). While commenting on the catalytic results in these two sections, the advantage of MOFs over other solid catalysts is compared in terms of activity by providing turnover number (TON) values and the structural stability of MOFs during the course of the reaction. The final section provides our views on further directions in this field.

Metal–organic frameworks as solid catalysts for the synthesis of nitrogen-containing heterocycles

2014 ◽  
Vol 43 (16) ◽  
pp. 5750-5765 ◽  
Author(s):  
Amarajothi Dhakshinamoorthy ◽  
Hermenegildo Garcia
Keyword(s):  
Critical Review ◽  
Metal Organic Frameworks ◽  
Solid Catalysts ◽  
Recent Developments ◽  
Metal Organic

This Critical Review summarizes the recent developments in the use of metal–organic frameworks as catalysts for the synthesis of nitrogen-containing heterocycles.

scholarly journals Cobalt-Based Metal Organic Frameworks as Solids Catalysts for Oxidation Reactions

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 95
Author(s):  
Amarajothi Dhakshinamoorthy ◽  
Eva Montero Lanzuela ◽  
Sergio Navalon ◽  
Hermenegildo Garcia
Keyword(s):  
Aerobic Oxidation ◽  
High Surface ◽  
Metal Organic Frameworks ◽  
High Surface Area ◽  
Acid Sites ◽  
Crystalline Lattice ◽  
Oxidation Reactions ◽  
Solid Catalysts ◽  
Long Term Stability ◽  
Metal Organic

Metal organic frameworks (MOFs) are porous crystalline solids whose frameworks are constituted by metal ions/nodes with rigid organic linkers leading to the formation of materials having high surface area and pore volume. One of the unique features of MOFs is the presence of coordinatively unsaturated metal sites in their crystalline lattice that can act as Lewis acid sites promoting organic transformations, including aerobic oxidation reactions of various substrates such as hydrocarbons, alcohols, and sulfides. This review article summarizes the existing Co-based MOFs for oxidation reactions organized according to the nature of substrates like hydrocarbon, alcohol, olefin, and water. Both aerobic conditions and peroxide oxidants are discussed. Emphasis is placed on comparing the advantages of using MOFs as solid catalysts with respect to homogeneous salts in terms of product selectivity and long-term stability. The final section provides our view on future developments in this field.

scholarly journals Shape control in ZIF-8 nanocrystals and metal nanoparticles@ZIF-8 heterostructures

Nanoscale ◽  
2017 ◽  
Vol 9 (43) ◽  
pp. 16645-16651 ◽  
Author(s):  
Guangchao Zheng ◽  
Zhuwen Chen ◽  
Kadir Sentosun ◽  
Ignacio Pérez-Juste ◽  
Sara Bals ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Shape Control ◽  
Metal Organic Frameworks ◽  
Metal Organic

Shape control in metal–organic frameworks still remains a challenge.

Bimetallic MOF-templated synthesis of alloy nanoparticle-embedded porous carbons for oxygen evolution and reduction reactions

2019 ◽  
Vol 48 (37) ◽  
pp. 13953-13959 ◽  
Author(s):  
Zakary Lionet ◽  
Shun Nishijima ◽  
Tae-Ho Kim ◽  
Yu Horiuchi ◽  
Soo Wohn Lee ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Oxygen Evolution ◽  
Porous Carbon ◽  
Metal Organic Frameworks ◽  
Carbon Matrix ◽  
Porous Carbons ◽  
Reduction Reactions ◽  
Templated Synthesis ◽  
Metal Organic

Pyrolysis of metal–organic frameworks (MOFs) to produce metal nanoparticles embedded inside a porous carbon matrix (M@PC) has drawn a lot of attention in recent years.

Elucidation of flexible metal-organic frameworks: Research progresses and recent developments

2019 ◽  
Vol 389 ◽  
pp. 161-188 ◽  
Author(s):  
Jae Hwa Lee ◽  
Sungeun Jeoung ◽  
Yongchul G. Chung ◽  
Hoi Ri Moon
Keyword(s):  
Metal Organic Frameworks ◽  
Recent Developments ◽  
Metal Organic ◽  
Flexible Metal

ChemInform Abstract: Catalysis by Metal Nanoparticles Embedded on Metal-Organic Frameworks

ChemInform ◽  
2012 ◽  
Vol 43 (43) ◽  
pp. no-no
Author(s):  
Amarajothi Dhakshinamoorthy ◽  
Hermenegildo Garcia
Keyword(s):  
Metal Nanoparticles ◽  
Metal Organic Frameworks ◽  
Metal Organic

Tuning Packing, Structural Flexibility, and Porosity in 2D Metal–Organic Frameworks by Metal Node Choice

2019 ◽  
Vol 72 (10) ◽  
pp. 797 ◽  
Author(s):  
Witold M. Bloch ◽  
Christian J. Doonan ◽  
Christopher J. Sumby
Keyword(s):  
Structural Changes ◽  
Metal Organic Frameworks ◽  
Chemical Properties ◽  
Complete Removal ◽  
Structural Flexibility ◽  
X Ray Diffraction ◽  
Metal Centre ◽  
Metal Organic ◽  
Physical And Chemical ◽  
And Chemical Properties

Understanding the key features that determine structural flexibility in metal–organic frameworks (MOFs) is key to exploiting their dynamic physical and chemical properties. We have previously reported a 2D MOF material, CuL1, comprising five-coordinate metal nodes that displays exceptional CO2/N2 selectively (L1=bis(4-(4-carboxyphenyl)-1H-pyrazolyl)methane). Here we examine the effect of utilising six-coordinate metal centres (CoII and NiII) in the synthesis of isostructural MOFs from L1, namely CoL1 and NiL1. The octahedral geometry of the metal centre within the MOF analogues precludes an ideal eclipse of the 2D layers, resulting in an offset stacking, and in certain cases, the formation of 2-fold interpenetrated analogues β-CoL1 and β-NiL1. We used a combination of thermogravimetric analysis (TGA), and powder and single crystal X-ray diffraction (PXRD and SCXRD) to show that desolvation is accompanied by a structural change for NiL1, and complete removal of the coordinated H2O ligands results in a reduction in long-range order. The offset nature of the 2D layers in combination with the structural changes impedes the adsorption of meaningful quantities of gases (N2, CO2), highlighting the importance of a five-coordinate metal centre in achieving optimal pore accessibility for this family of flexible materials.

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