Metal organic frameworks catalysts

Engineering Metal-Organic Frameworks Catalysts by Postsynthetic Modification... 

Tanabe KK, Cohen SM (2009) Engineering a metal-organic framework catalyst by using postsynthetic modification. Angew Chem Int Ed 48 7424—7427... 

Meio-epoxides undergo a ring-opening reaction with aromatic amines in the presence of a chiral metal-organic framework catalyst Zn2(L)(H20)2(A,A -dimethylacetamide)4 where L, [(S)-6,6 -dichloro-2,2 -diethoxy-1,T-binaphthyl-4,4 -bis(5-isophthalic acid)] is an organic linker between the zinc clusters Yields of the a-hydroxyamine ranging i from 70 to 95% with 62-89% ee were obtained using CM-stilbene epoxide and aniline. Lower yields and much lower ee values were found when different substituents were on the stilbene epoxide or the aniline. 

De Rosa S, Giordano G, Granato T, Katovic A, Siciliano A, Tripicchio F, et al. Chemical pretreatment of olive oil mill wastewater using a metal-organic framework catalyst. J Agric Food Chem 2005 53 8306-9. 

Very recently, an alternative route was being researched in 2015, where it seems possible to produce ethanol directly from ethane via the use of a new type of Metal Organic Framework catalyst and N2O. This reaction can be performed at 75°C and makes the direct conversion of ethane into ethanol possible at mild conditions for the first time. This also opens the way for making better use of ethane which is present in natural gas and/or can be produced from methane via oxidative coupling. 

The search for better catalysts has been facilitated in recent years by molecular modeling. We are seeing here a step change. This is the subject of Chapter 1 (Molecular Catalytic Kinetics Concepts). New types of catalysts appeared to be more selective and active than conventional ones. Tuned mesoporous catalysts, gold catalysts, and metal organic frameworks (MOFs) that are discussed in Chapter 2 (Hierarchical Porous Zeolites by Demetallation, 3 (Preparation of Nanosized Gold Catalysts and Oxidation at Room Temperature), and 4 (The Fascinating Structure... 

N anomaterials have been around for hundreds of years and are typically defined as particles of size ranging from 1 to 100 nm in at least one dimension. The inorganic nanomaterial catalysts discussed here are manganese oxides and titanium dioxide. Outside the scope of this chapter are polymers, pillared clays, coordination compounds, and inorganic-organic hybrid materials such as metal-organic frameworks. 

Uabres i Xamena, F.X., Casanova, O., Galiasso Tailleur, R., Garda, H., and Corma, A. (2008) Metal organic frameworks (MOFs) as catalysts a combination of Cfr and Co MOFs as an effident catalyst for tetrahn oxidation. /. Catal, 255, 220-227. 

Key Words P-31 solid-state NMR, 31P CP/MAS, Ultra-fast MAS, Phosphorylated amino acids, Nucleotides, Nucleic acids, Phosphate glasses, Aluminophosphates, Molecular sieves, Catalysts, Polyoxometalate (POM), Metal-organic framework (MOF), Inclusion complexes. 

S.-H. Cho, B. Ma, S. T. Nguyen, J. T. Hupp, T. E. Albrecht-Smith, A metal-organic framework material that functions as an enantioselective catalyst for olefin epoxidation, Chem. Commun. (2006) 2563. 

The goal of this chapter is to present an overview of reports in the scientific literature that involve the use of microwave heating in the preparation of inorganic and organometallic compounds. For practical purposes, no attanpt has been made to cover compounds of all elements. The scope has been limited to coordination compounds and organometallic complexes containing transition metals. The focus is on molecular compounds and not on materials that could be classified as nanoparticles, polymers, supported catalysts, metal-organic frameworks, or solid-state materials. 

In this section, we wiU consider the hydroxyl population on some materials of practical interest including oxides, zeolites, and porous phosphates, which have found application as catalysts and catalyst supports as well as metal organic frameworks. 

This is not to say that all has been discovered about these materials. New solids are continually being synthesised, and the rapidly developing field of porous metal organic frameworks (MOFs) is a current example. The applica-bihty of microporous solids is continually being extended within the traditional fields of adsorption, catalysis and ion exchange. One exciting application explores their use as catalysts in the manufacture of fine chemicals. Other emerging areas of research concern their potential use in medicine or in devices that require speeial electronic or optical properties. 

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