Article
Chemistry, Physical
Xu Chen, Zhiwei Qiao, Bang Hou, Hong Jiang, Wei Gong, Jinqiao Dong, Hai-Yang Li, Yong Cui, Yan Liu
Summary: Metal-organic frameworks (MOFs) have shown great potential in heterogeneous catalysis, and the enantioselectivities of chiral MOF (CMOF) catalysts can be significantly enhanced by designing metals and ligands, resulting in improved chiral catalytic reactions.
Review
Biochemistry & Molecular Biology
Francisco G. Cirujano, Rafael Luque, Amarajothi Dhakshinamoorthy
Summary: Metal-organic frameworks (MOFs) have become versatile solid materials used in various applications like gas storage, separation, sensors, and catalysis. This review focuses on the use of MOFs as solid catalysts for the Henry reaction, discussing their structural properties and active sites. Comparisons with other solid catalysts in terms of activity and structural stability are made, along with suggestions for future directions in this field.
Article
Chemistry, Physical
Juan L. Obeso, J. Gabriel Flores, Catalina V. Flores, Reyna Rios-Escobedo, Julia Aguilar-Pliego, A. Ken Inge, Jose Antonio de los Reyes, Ricardo A. Peralta, Ilich A. Ibarra, Carolina Leyva
Summary: SU-101 was found to be an acid catalyst for the ring-opening alcoholysis of cyclohexene oxide, possessing open metal sites. It demonstrated high chemical stability, retaining its crystalline structure after the reaction. The conversion rates of cyclohexene to methanol, ethanol, and propanol were estimated to be 99.8%, 96.8%, and 14.3% at 40 degrees C, respectively. Moreover, SU-101 exhibited excellent catalytic cyclability, maintaining its activity after five cycles.
Article
Chemistry, Multidisciplinary
Kyle J. Korman, Michael R. Dworzak, Glenn P. A. Yap, Eric D. Bloch
Summary: This paper describes the preparation of a new class of reactive porous solids through straightforward salt metathesis reactions. A porous solid is obtained by reacting the dimethylammonium salt of a magnesium-based porous coordination cage with the chloride salt of [(CrCl)-Cl-II(Me(4)cyclam)](+), with simultaneous removal of dimethylammonium chloride. The porous salt exhibits a Brunauer-Emmett-Teller (BET) surface area of 213 m(2) g(-1) and the chromium(II) cations in the structure are still accessible and reactive, as confirmed by UV-vis spectroscopy. The site-isolated reactive centers show enhanced stability and reactivity compared to dissolved ions.
Article
Chemistry, Multidisciplinary
Faranak Manteghi, Fatemeh Zakeri, Owen James Guy, Zari Tehrani
Summary: A chromium-containing metal-organic framework MIL-101 was effectively used as a heterogeneous catalyst for the solvent-free synthesis of 2,4,5-trisubstituted imidazoles, showing advantages such as high efficiency, reusability, and ease of isolation. The catalytic reaction achieved a high yield in a short time, making it a promising alternative to other catalysts.
Article
Chemistry, Multidisciplinary
Ben Ma, Qi Xia, Deyang Wang, Ji-Kang Jin, Zekun Li, Qiu-Jiang Liang, Meng-Ying Sun, Dongyi Liu, Li-Juan Liu, Hui-Xing Shu, Jun Yang, Dan Li, Jian He
Summary: Visible-light copper photocatalysis has become a viable technology for sustainable synthetic processes. In this study, a metal-organic framework (MOF)-supported copper(I) photocatalyst was developed for iminyl radical-mediated reactions. The heterogenized copper photosensitizer exhibited higher catalytic activity than its homogeneous counterpart due to site isolation. The immobilization of copper species on MOF supports using a hydroxamic acid linker allowed for high recyclability of the heterogeneous catalysts and the preparation of previously unavailable monomeric copper species through post-synthetic modification on MOF surfaces. This study highlights the potential of MOF-based heterogeneous catalytic systems in addressing challenges in synthetic methodologies and mechanistic investigations of transition-metal photoredox catalysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Lin Wang, Shu-Rong Li, Yu-Zhen Chen, Hai-Long Jiang
Summary: In this work, nanocrystals of Cu2O were encapsulated by metal-organic frameworks (MOFs) through a simple strategy, resulting in the successful fabrication of Cu@HKUST-1 composites with uniform morphology and controlled MOF thickness. The integration of Cu NCs properties with MOF advantages helped to create a multifunctional catalyst, exhibiting cooperative catalytic activity and improved recyclability.
Article
Chemistry, Multidisciplinary
Shan-Shan Fu, Qiang-Qiang Yuan, Lihua Ma, Zhi-Ming Zhang, Tong-Bu Lu, Song Guo
Summary: A series of TEMPO@PCN-222 composite photocatalysts were developed by coordinating different amount of 4-carboxy-TEMPO with the secondary building units of PCN-222. Visible-light irradiation enables the transfer of photogenerated holes in the highest occupied molecular orbital of PCN-222 to TEMPO, significantly increasing the photosynthesis of bioactive (iso)quinolones. With an outstanding catalytic stability and substrate tolerance, TEMPO@PCN-222 exhibits a yield of 86.7% for 1-methyl-2-quinolinone, over four times higher than PCN-222 (21.4%). This study provides a new route for constructing composite photocatalysts from abundant starting materials for efficient photosynthesis of high value-added chemicals.
Article
Chemistry, Physical
Arputham Shophia Lawrence, Balasubramanian Sivakumar, Amarajothi Dhakshinamoorthy
Summary: Metal organic frameworks (MOFs) are important heterogeneous solid catalysts with a wide range of active sites, particularly Lewis acids, which play a key role in organic reactions. Experimental evidence supports the presence of these active sites, and density functional theory (DFT) calculations are used to complement and clarify their role in catalytic reactions. Theoretical evidence is crucial in providing a deeper understanding of MOFs' role in promoting reactions and supporting proposed reaction mechanisms.
MOLECULAR CATALYSIS
(2022)
Review
Materials Science, Multidisciplinary
Chongxiong Duan, Kuan Liang, Jiahui Lin, Jingjing Li, Libo Li, Le Kang, Yi Yu, Hongxia Xi
Summary: H-MOFs, as a popular class of crystalline porous materials with hierarchical porous structures, have been widely studied in heterogeneous catalysis. They exhibit excellent catalytic activity, selectivity, stability, and recyclability, showing great potential for future research and applications.
SCIENCE CHINA-MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shuaishuai Hu, Chenfan Xie, Yu-Ping Xu, Xuelu Chen, Ming-Liang Gao, He Wang, Weijie Yang, Zhong-Ning Xu, Guo-Cong Guo, Hai-Long Jiang
Summary: Incorporating Pd nanoparticles into metal-organic frameworks (MOFs) significantly improves the selectivity of the product in the direct CO esterification reaction, which is consistent with Pd nanoparticles supported on other carriers.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Zhiming Cui, Ting Fan, Liyu Chen, Ruiqi Fang, Chuanmao Li, Yingwei Li
Summary: A solvent assisted ligand exchange-hydrogen reduction strategy was used to selectively encapsulate ultrafine metal nanoparticles (Pd or Pt) within the shallow layers of MOF UiO-67. By controlling the conditions, the particle sizes of the encapsulated nanoparticles and the thickness of the embedded layers can be easily adjusted. Compact encapsulation of nanoparticles within the shallow layers of MOFs can enhance catalytic efficiency and utilization.
SCIENCE CHINA-CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Y. B. N. Tran, Phuong T. K. Nguyen
Summary: A new zinc-based metal-organic framework with high porosity and excellent catalytic activity has been synthesized, showing promising potential in the synthesis of Paal-Knorr N-substituted pyrroles.
Article
Chemistry, Physical
Mohammad Shahinur Rahaman, Sarttrawut Tulaphol, Kyle Mills, Ashten Molley, Md Anwar Hossain, Shashi Lalvani, Thana Maihom, Mark Crocker, Noppadon Sathitsuksanoh
Summary: Lactic acid is a renewable and versatile chemical derived from biomass, and the development of water-tolerant acid catalysts is crucial for its production. The study demonstrates that the MIL-101(Al)-NH2 metal-organic framework is an efficient and selective solid Lewis acid catalyst for dihydroxyacetone isomerization to lactic acid, showing high selectivity and stability.
Article
Chemistry, Multidisciplinary
Anthony Griffiths, Sarah L. Boyall, Pia Mueller, John P. Harrington, Anna M. Sobolewska, William R. Reynolds, Richard A. Bourne, Kejun Wu, Sean M. Collins, Mark Muldowney, Thomas W. Chamberlain
Summary: We propose an approach to utilize complex nanomaterials for continuous flow heterogeneous catalysis by combining them with carbon pelleted supports. A composite heterogeneous catalyst has been developed, and its catalytic activity has been studied under continuous flow. The catalyst shows no loss in activity for 9 hours, paving the way for further development in MOF-based continuous flow heterogeneous catalysis.
Article
Chemistry, Multidisciplinary
Manel Mansour, Hamza Kahri, Mouhieddinne Guergueb, Houcine Barhoumi, Enrique Gutierrez Puebla, Brahim Ayed, Umit B. Demirci
Summary: In this study, a copper-based MOF catalyst Cu-3(SDBA)(2)(HSDBA) was synthesized and demonstrated to be highly efficient for reducing 4-nitrophenol, with the ability to be reused for multiple cycles without significant loss of catalytic activity.
REACTION CHEMISTRY & ENGINEERING
(2022)
Article
Energy & Fuels
Beatriz Fuerte-Diez, Antonio Valverde-Gonzalez, Mercedes Pintado-Sierra, Urbano Diaz, Felix Sanchez, Eva M. Maya, Marta Iglesias
Summary: Two new covalent triazine frameworks incorporating phenyl extended naphthalene units have been prepared using thermal and microwave activation. These frameworks show similar chemical structures but exhibit differences in morphology, structural organization, CO2 adsorption capacity, and thermal and optical properties. Additionally, the presence of methoxy groups in the naphthalene core has an influence on some of these properties. The resulting phenyl extended naphthalene CTFs are utilized as metal-free heterogeneous photocatalysts for selective reactions under visible-light irradiation, demonstrating high chemical stability.
Article
Chemistry, Inorganic & Nuclear
Eloy P. Gomez-Oliveira, Nayara Mendez, Marta Iglesias, Enrique Gutierrez-Puebla, Lina M. Aguirre-Diaz, M. Angeles Monge
Summary: In this study, a new BiPF-4 material and its synthesis and catalytic activity were presented. The 2D layers of BiPF-4, formed by Bi7 polyhedra, provide numerous active sites for Lewis acid catalysis. The material exhibits excellent heterogeneous catalytic activity in the multicomponent Strecker reaction.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Eloy P. Gomez-Oliveira, Daniel Reinares-Fisac, Lina M. Aguirre-Diaz, Fatima Esteban-Betegon, Mercedes Pintado-Sierra, Enrique Gutierrez-Puebla, Marta Iglesias, M. Angeles Monge, Felipe Gandara
Summary: This study synthesized and characterized three new bismuth metal-organic frameworks (MOFs), and demonstrated their catalytic activity in the one-pot multicomponent Strecker reaction. Among the MOFs, BiPF-7 exhibited high stability and catalytic activity, and the interaction between catalytic substrates and metal centers was analyzed through crystallography.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Clara Lopez-Garcia, Stefano Canossa, Joke Hadermann, Giulio Gorni, Freddy E. Oropeza, Victor A. de la Pena O'Shea, Marta Iglesias, M. Angeles Monge, Enrique Gutierrez-Puebla, Felipe Gandara
Summary: A novel synthetic approach is described for the targeted preparation of multivariate metal-organic frameworks (MTV-MOFs) with specific combinations of metal elements, providing more flexibility for the structure of building units by preserving specific metal element combinations during the synthesis process.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Antonio Valverde-Gonzalez, Pilar Fernandez-Serinan, Angela Matarin, Avelina Arnanz, Felix Sanchez, Marta Iglesias
Summary: A series of chiral polymeric aromatic frameworks containing novel enantiopure compounds were successfully synthesized and used as efficient catalysts after metalation, exhibiting good recyclability.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Arghyadeep Bhattacharyya, Mario Gutierrez, Boiko Cohen, Antonio Valverde-Gonzalez, Marta Iglesias, Abderrazzak Douhal
Summary: Mixed-metal organic frameworks (MMOFs) with introduction of a second or even a third metal atom enhance photocatalytic activity through favorable ligand-to-cluster charge transfer (LCCT) process and generation of long-lived charge-separated states (CSSs). Spectroscopic and photodynamical characterization of different metal cluster compositions in MOFs provides evidence for the relationship between photodynamics and photocatalytic activities. Higher LCCT efficiency and CSSs population in trimetallic MOF result in enhanced photocatalytic performance compared to monometallic MOF.
MATERIALS TODAY ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Miguel Gomez-Mendoza, Mercedes Pintado-Sierra, Cristina Monterde, Mariam Barawi, Felix Sanchez, Marta Iglesias, Victor A. de la Pena O'Shea, Marta Liras
Summary: The presence of fluorine atoms in the CPP structure improves the photonic efficiency and hydrogen production when combined with TiO2. The hybrid catalyst Pt/CPP-FPA@T-10 shows almost twice the hydrogen production of Pt/CPP-PA@T-10 and 3.5 times higher than that of Pt/TiO2.
ADVANCED SUSTAINABLE SYSTEMS
(2022)
Article
Chemistry, Multidisciplinary
Antonio Valverde-Gonzalez, M. Carmen Borrallo-Aniceto, Urbano Diaz, Eva M. Maya, Felipe Gandara, Felix Sanchez, Marta Iglesias
Summary: Studies have shown that tetrazole-based nitrogen-rich naphthalene cobalt-MOFs exhibit good catalytic activity and adsorption performance in the epoxidation of alkenes and CO2 cycloaddition reactions. These catalysts possess Lewis acid and redox functionalities and can simultaneously achieve both reactions through a one-pot tandem process.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Chemistry, Physical
Beatriz Fuerte-Diez, Elizabeth Rangel-Rangel, Marta Iglesias, Eva M. Maya
Summary: Homogeneous and heterogeneous catalytic systems based on BzmimCl assisted by strong bases were used for oxidative esterification of furfural to obtain MF. The catalytic systems showed high selectivity and conversion rates. The homogeneous catalyst systems exhibited better activity compared to similar ionic liquid systems, while the HCP-BzmimCl is the first heterogeneous metal-free catalyst for this reaction. HCP-BzmimCl can be recycled up to 5 times to obtain quantitatively methyl furoate using both bases.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Polymer Science
Sara Senorans, Isabel Valencia, Estibaliz Merino, Marta Iglesias, Manuel A. Fernandez-Rodriguez, Eva M. Maya
Summary: The first example of a porous polymer containing B-N covalent bonds prepared using the solvent knitting strategy is reported. The polymer exhibits micromeso porosity, high thermal stability, and potential properties as a highly stable and efficient photocatalyst. After the first run, the catalyst improves its photocatalytic activity and maintains this activity in successive runs, making it a new type of material with potential applications.
Article
Chemistry, Physical
Beatriz Fuerte-Diez, Elizabeth Rangel-Rangel, Felix Sanchez, M. Angeles Monge, Enrique Gutierrez-Puebla, Antonio Valverde-Gonzalez, Eva M. Maya, Marta Iglesias
Summary: In this study, a donor-acceptor porous conjugated polydiphenylpyreneimide (DPPy-PI) with high thermal stability and surface area was synthesized and evaluated as an efficient metal-free heterogeneous photocatalyst for selective oxidation and cycloaddition reactions.
JOURNAL OF CATALYSIS
(2023)
