A Series of Metal-Organic Frameworks for Selective CO2 Capture and Catalytic Oxidative Carboxylation of Olefins

Three novel lanthanide metal˗organic frameworks (Ln-MOFs), namely MOF-590, -591, and -592 were constructed from a naphthalene diimide tetracarboxylic acid. Gas adsorption measurements of MOF-591 and -592 revealed good adsorption of CO2 (low pressure, at room temperature) and moderate CO2 selectivity over N2 and CH4. Accordingly, breakthrough measurements were performed on a representative MOF-592, in which the separation of CO2 from binary mixture containing N2 and CO2 was demonstrated without any loss in performance over three consecutive cycles. Moreover, MOF-590, MOF-591, and MOF-592 exhibited catalytic activity in the one-pot synthesis of styrene carbonate from styrene and CO2 under mild conditions (1 atm CO2, 80 °C, and solvent-free). Among the new materials, MOF-590 revealed a remarkable efficiency with exceptional conversion (96%), selectivity (95%), and yield (91%).

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Sustainable One-Pot Immobilization of Enzymes in/on Metal-Organic Framework Materials

Catalysts ◽

10.3390/catal11081002 ◽

2021 ◽

Vol 11 (8) ◽

pp. 1002 ◽

Cited By ~ 1

Author(s):

M. Asunción Molina ◽

Victoria Gascón-Pérez ◽

Manuel Sánchez-Sánchez ◽

Rosa M. Blanco

Keyword(s):

Room Temperature ◽

Metal Organic Framework ◽

One Pot ◽

Framework Materials ◽

Immobilization Of Enzymes ◽

Metal Organic ◽

One Step ◽

The One ◽

Synthetic Approaches ◽

Organic Framework

The industrial use of enzymes generally necessitates their immobilization onto solid supports. The well-known high affinity of enzymes for metal-organic framework (MOF) materials, together with the great versatility of MOFs in terms of structure, composition, functionalization and synthetic approaches, has led the scientific community to develop very different strategies for the immobilization of enzymes in/on MOFs. This review focuses on one of these strategies, namely, the one-pot enzyme immobilization within sustainable MOFs, which is particularly enticing as the resultant biocomposite Enzyme@MOFs have the potential to be: (i) prepared in situ, that is, in just one step; (ii) may be synthesized under sustainable conditions: with water as the sole solvent at room temperature with moderate pHs, etc.; (iii) are able to retain high enzyme loading; (iv) have negligible protein leaching; and (v) give enzymatic activities approaching that given by the corresponding free enzymes. Moreover, this methodology seems to be near-universal, as success has been achieved with different MOFs, with different enzymes and for different applications. So far, the metal ions forming the MOF materials have been chosen according to their low price, low toxicity and, of course, their possibility for generating MOFs at room temperature in water, in order to close the cycle of economic, environmental and energy sustainability in the synthesis, application and disposal life cycle.

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A Study on the Rearrangement of Dialkyl 1-Aryl-1-hydroxymethylphosphonates to Benzyl Phosphates

Current Organic Chemistry ◽

10.2174/1385272824666200226114306 ◽

2020 ◽

Vol 24 (4) ◽

pp. 465-471 ◽

Cited By ~ 2

Author(s):

Zita Rádai ◽

Réka Szabó ◽

Áron Szigetvári ◽

Nóra Zsuzsa Kiss ◽

Zoltán Mucsi ◽

...

Keyword(s):

Quantum Chemical ◽

Room Temperature ◽

Phase Transfer ◽

One Pot ◽

Substrate Dependence ◽

Triethylbenzylammonium Chloride ◽

One Step ◽

The Pudovik Reaction ◽

The One ◽

Solid Liquid

The phospha-Brook rearrangement of dialkyl 1-aryl-1-hydroxymethylphosphonates (HPs) to the corresponding benzyl phosphates (BPs) has been elaborated under solid-liquid phase transfer catalytic conditions. The best procedure involved the use of triethylbenzylammonium chloride as the catalyst and Cs2CO3 as the base in acetonitrile as the solvent at room temperature. The substrate dependence of the rearrangement has been studied, and the mechanism of the transformation under discussion was explored by quantum chemical calculations. The key intermediate is an oxaphosphirane. The one-pot version starting with the Pudovik reaction has also been developed. The conditions of this tandem transformation were the same, as those for the one-step HP→BP conversion.

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3D Metal–Organic Frameworks Based on Co(II) and Bithiophendicarboxylate: Synthesis, Crystal Structures, Gas Adsorption, and Magnetic Properties

Molecules ◽

10.3390/molecules26051269 ◽

2021 ◽

Vol 26 (5) ◽

pp. 1269

Author(s):

Vadim A. Dubskikh ◽

Anna A. Lysova ◽

Denis G. Samsonenko ◽

Alexander N. Lavrov ◽

Konstantin A. Kovalenko ◽

...

Keyword(s):

Room Temperature ◽

Gas Adsorption ◽

Magnetic Moments ◽

Bet Surface Area ◽

Separation Performance ◽

Bridging Ligands ◽

Magnetization Data ◽

Metal Organic ◽

Ch4 Adsorption ◽

Gas Separation Performance

Three new 3D metal-organic porous frameworks based on Co(II) and 2,2′-bithiophen-5,5′-dicarboxylate (btdc2−) [Co3(btdc)3(bpy)2]·4DMF, 1; [Co3(btdc)3(pz)(dmf)2]·4DMF·1.5H2O, 2; [Co3(btdc)3(dmf)4]∙2DMF∙2H2O, 3 (bpy = 2,2′-bipyridyl, pz = pyrazine, dmf = N,N-dimethylformamide) were synthesized and structurally characterized. All compounds share the same trinuclear carboxylate building units {Co3(RCOO)6}, connected either by btdc2– ligands (1, 3) or by both btdc2– and pz bridging ligands (2). The permanent porosity of 1 was confirmed by N2, O2, CO, CO2, CH4 adsorption measurements at various temperatures (77 K, 273 K, 298 K), resulted in BET surface area 667 m2⋅g−1 and promising gas separation performance with selectivity factors up to 35.7 for CO2/N2, 45.4 for CO2/O2, 20.8 for CO2/CO, and 4.8 for CO2/CH4. The molar magnetic susceptibilities χp(T) were measured for 1 and 2 in the temperature range 1.77–330 K at magnetic fields up to 10 kOe. The room-temperature values of the effective magnetic moments for compounds 1 and 2 are μeff (300 K) ≈ 4.93 μB. The obtained results confirm the mainly paramagnetic nature of both compounds with some antiferromagnetic interactions at low-temperatures T < 20 K in 2 between the Co(II) cations separated by short pz linkers. Similar conclusions were also derived from the field-depending magnetization data of 1 and 2.

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Clean one-pot multicomponent synthesis of pyrans using a green and magnetically recyclable heterogeneous nanocatalyst

SynOpen ◽

10.1055/a-1469-6721 ◽

2021 ◽

Author(s):

Mina Ghassemi ◽

Ali Maleki

Keyword(s):

Room Temperature ◽

Significant Loss ◽

Copper Ferrite ◽

Multicomponent Synthesis ◽

Thermo Gravimetric ◽

Sem Images ◽

One Pot ◽

Three Component Reaction ◽

Ft Ir ◽

The One

Copper ferrite (CuFe2O4) magnetic nanoparticles (MNPs) were synthesized via thermal decomposition method and applied as a reusable and green catalyst in the synthesis of functionalized 4H-pyran derivatives using malononitrile, an aromatic aldehyde and a β-ketoester in ethanol at room temperature. Then it was characterized by Fourier transform infrared spectroscopy (FT-IR), energy-dispersive X-ray spectroscopy (EDX) analysis, scanning electron microscopy (SEM) images, thermo gravimetric and differential thermo gravimetric (TGA/DTG) analysis. The catalyst was recovered from the reaction mixture by applying an external magnet and decanting the mixture. Recycled catalyst was reused for several times without significant loss in its activity. Running the one-pot three-component reaction at room temperature, no use of eternal energy source and using a green solvent provide benign, mild, and environmentally friendly reaction conditions; as well, ease of catalyst recovering, catalyst recyclability, no use of column chromatography and good to excellent yields are extra advantages of this work.

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Cobalt-Based Quasi-Metal–Organic Framework as a Tandem Catalyst for Room-Temperature Open-Air One-Pot Synthesis of Imines

ACS Sustainable Chemistry & Engineering ◽

10.1021/acssuschemeng.1c02851 ◽

2021 ◽

Author(s):

Minoo Bagheri ◽

Mohammad Yaser Masoomi ◽

Esther Domínguez ◽

Hermenegildo García

Keyword(s):

Room Temperature ◽

Metal Organic Framework ◽

One Pot ◽

One Pot Synthesis ◽

Metal Organic ◽

Organic Framework

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Predictive Acid Gas Adsorption in Rare Earth DOBDC Metal–Organic Frameworks via Complementary Cluster and Periodic Structure Models

The Journal of Physical Chemistry C ◽

10.1021/acs.jpcc.0c08282 ◽

2020 ◽

Vol 124 (49) ◽

pp. 26801-26813

Author(s):

Dayton J. Vogel ◽

Zachary R. Lee ◽

Caitlin A. Hanson ◽

Susan E. Henkelis ◽

Caris M. Smith ◽

...

Keyword(s):

Rare Earth ◽

Periodic Structure ◽

Gas Adsorption ◽

Metal Organic Frameworks ◽

Acid Gas ◽

Metal Organic

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In situ growth and optical gas adsorption performance of Zn(ii) metal–organic framework membranes at room temperature

The Analyst ◽

10.1039/c9an00278b ◽

2019 ◽

Vol 144 (16) ◽

pp. 4887-4896 ◽

Cited By ~ 1

Author(s):

Mariyemu Tuergong ◽

Patima Nizamidin ◽

Abliz Yimit ◽

Rena Simayi

Keyword(s):

Room Temperature ◽

Gas Adsorption ◽

Uv Light ◽

Metal Organic Framework ◽

Adsorption Behaviors ◽

Uv Light Irradiation ◽

Unit Surface ◽

Metal Organic ◽

First Time

The optical gas adsorption behaviors of [Zn2(bdc)2(dpNDI)]n membranes were studied for the first time. Under UV light irradiation, they exhibited a greater adsorption response to xylene gas with adsorption capacity of 6.46 μg cm−2 per unit surface.

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