The improvement of the Total Isomerization Process (TIP) for the production of high-quality gasoline with the ultimate goal of reaching a Research Octane Number (RON) higher than 92 requires the use of specific sorbents to separate pentane and hexane isomers into classes of linear, mono- and di-branched isomers. Herein we report the design of a new multi-cage microporous Fe(III)-MOF (referred to as MIP-214, MIP stands for materials of the Institute of Porous Materials of Paris) with a flu-e topology, incorporating an asymmetric heterofunctional ditopic ligand, 4-pyrazolecarboxylic acid, that exhibits an appropriate microporous structure for a thermodynamic-controlled separation of hydrocarbon isomers. This MOF produced via a direct, scalable, and mild synthesis route was proven to encompass a unique separation of C5/C6 isomers by classes of low RON over high RON alkanes with a sorption hierarchy: (n-hexane >> n-pentane ≈ 2-methylpentane > 3-methylpentane)low RON>>(2,3-dimethylbutane ≈ i-pentane ≈ 2,2-dimethylbutane)high RON following the adsorption enthalpy sequence. We reveal for the first time that a single sorbent can efficiently separate such a complex mixture of high RON di-branched hexane and mono-branched pentane isomers from their low RON counterparts, which is a major achievement reported so far.
First published in Angewandte Chemie on 15 February 2024, here: https://doi.org/10.1002/anie.202320008
by Lin Zhou, Pedro Brantuas, Adriano Henrique, Helge Reinsch, Mohammad Wahiduzzaman, Jean-Marc Grenèche, Alirio Rodrigues, José Silva, Guillaume Maurin, Christian Serre
For those who are interested : https://rsc.zoom.us/webinar/register/7917043887917/WN_x0lk673UR86HKAs19XErjw#/registration
Topic: RSC Desktop Seminar: Porous Materials
Register in advance for this webinar:
https://rsc.zoom.us/webinar/register/WN_x0lk673UR86HKAs19XErjw
After registering, you will receive a confirmation email containing information about joining the webinar.
The Royal Society of Chemistry invites you to attend the latest in our series of RSC Desktop Seminars.
This 60 minute webinar will focus on porous materials, and will feature two talks followed by a discussion and Q&A.
Guest speakers:
Prof. Dr. Bettina Lotsch (Max Planck Institute)
« Covalent Organic Frameworks for Solar Energy Conversion: From Design to Function »
Dr. Christian Serre (CNRS)
« Ambient pressure green synthesis of robust MOFs »
Please see speakers section below for more information, as updated.
This webinar is free to attend wherever you are, and can be watched either live or on-demand at a time that’s convenient to you.
We hope you can join us!
Sincères félicitations à Christian Serre, Directeur de recherche CNRS, Directeur de l’IMAP, pour son élection à l’Academie des sciences !
C’est une belle reconnaissance pour le formidable travail accompli au cours de sa carrière à l’Institut Lavoisier à Versailles et poursuivi depuis son arrivée à l’ENS et l’ESPCI.
Communiqué de presse de l’académie et plus d’infos sur les nouveaux académiciens.
A robust ultra-microporous cationic aluminum-based metal-organic framework with a flexible tetra-carboxylate linker
Al-based cationic metal-organic frameworks (MOFs) are uncommon. Here, we report a cationic Al-MOF, MIP-213(Al) ([Al18(μ2-OH)24(OH2)12(mdip)6]6Cl·6H2O) constructed from flexible tetra-carboxylate ligand (5,5′-Methylenediisophthalic acid; H4mdip). Its crystal structure was determined by the combination of three-dimensional electron diffraction (3DED) and high-resolution powder X-ray diffraction. The structure is built from infinite corner-sharing chains of AlO4(OH)2 and AlO2(OH)3(H2O) octahedra forming an 18-membered rings honeycomb lattice, similar to that of MIL-96(Al), a scarce Al-polycarboxylate defective MOF. Despite sharing these structural similarities, MIP-213(Al), unlike MIL-96(Al), lacks the isolated μ3-oxo-bridged Al-clusters. This leads to an ordered defective cationic framework whose charge is balanced by Cl- sandwiched between two Al-trimers at the corner of the honeycomb, showing strong interaction with terminal H2O coordinated to the Al-trimers. The overall structure is endowed by a narrow quasi-1D channel of dimension ~4.7 Å. The Cl- in the framework restrains the accessibility of the channels, while the MOF selectively adsorbs CO2 over N2 and possesses high hydrolytic stability.
Check out our new review article entitled Large-Scale Production of Metal–Organic Frameworks
from Debu, Aysu, Georges, Farid and Christian
program_nanopore workshop
The Workshop « Nanopores for detection » organized by IMAP (Mathilde Lepoitevin) and LAMBE (Juan Pelta) will take place on October 18 from 8:45 am at ENS, Department of Chemistry, 24 Rue Lhomond, 75005 Paris, salle Paul Langevin (limited to 40 persons) and in hybrid (zoom link after registration).
Mandatory registration: https://tinyurl.com/43zc787s
We will review European research that explores recent developments for real-time detection of target molecules at the single molecule scale. We aim to address societal challenges such as personalized medicine through ultra-fast analysis of biomolecules using nanopore technology. The speakers will be Robert Blick (University of Hamburg), Mauro Chinappi (Università Tor Vergata Roma) and Fred Antson (University of York), and also we will get updates from the industrial side with Filippo Cona (Elements), and Luc Lenglet (Dreampore).
Mathilde Lepoitevin is inviting you to a scheduled Zoom meeting.
Topic: Nanopore workshop
Time: Oct 18, 2021 08:45 AM Paris
Join Zoom Meeting
https://us02web.zoom.us/j/85190662105?pwd=RmZkZU43dWMvQUxmd01HSXZmaWtRUT09
Meeting ID: 851 9066 2105
Passcode: nanopore
The first #MOF4AIR Newsletter is out! Download the newsletter here (https://mof4air.eu/newsletter/) to find out information on the WP progress, coming events and next steps Coche en gras
Don’t forget to subscribe to the Newsletter to make sure you don’t miss any updates!
Congrats to Shan Dai, Antoine Tissot and Christian Serre for their paper « Metal-Organic Frameworks: from ambient green synthesis to applications » in Bulletin of the Chemical Society of Japan .
Abstract:
Studies of the room temperature synthesis of Metal-Organic Frameworks (MOFs) are still scarce and mainly focused on divalent metals based MOFs. The development of room temperature synthesis of more chemically robust MOFs is still challenging and therefore lacks of exploration. Here, we review the development of ambient conditions synthesis of MOFs, from the properties of the sole MOF to their related composites. Low temperature green synthesis can not only meet the standards of sustainable chemistry, but also help to achieve a series of property enhancements, including their applications in catalysis, biomedicine, and sensing. Finally, perspectives associated to the synthesis strategies and applications of room temperature methods are discussed.
More info here: https://doi.org/10.1246/bcsj.20210276
Congrats to Shan Dai, Antoine Tissot and Christian Serre for their paper « Monodispersed MOF-808 Nanocrystals Synthesized via a Scalable Room-Temperature Approach for Efficient Heterogeneous Peptide Bond Hydrolysis » in Chem. Matter.
Article here: doi.org/10.1021/acs.chemmater.1c02174
Abstract
Zr(IV)-based metal–organic frameworks (MOFs) such as the Zr(IV) trimesate MOF-808 are promising materials for catalytic applications. In this work, we report an aqueous solution-based room-temperature strategy to produce well-defined monodispersed MOF-808 nanocrystals down to 35 nm with a high space-time yield, up to 2516 kg/m3/day, and excellent crystallinity and porosity. The resulting nanocrystals show remarkable colloidal dispersion during 1 day in a wide range of nanoparticle concentrations. As a result, 35 nm MOF-808 colloidal-level nanocrystals exhibit the highest rate of selective peptide bond and protein hydrolysis among the reported Zr(IV)-based MOFs. This result may open new opportunities for highly efficient peptide or protein hydrolysis using scalable nanocatalysts.
