Review
Chemistry, Multidisciplinary
Yan Wan, Jong-Min Lee
Summary: The catalytic conversion of 5-hydroxymethylfufural (HMF) holds great promise for producing valuable chemicals and reducing dependence on fossil feedstocks. The reductive upgrading of HMF has shown potential to produce monomers and liquid fuel additives. Thermocatalytic conversion has advantages over photocatalysis and electrocatalysis in productivity. Research focuses on catalyst design, reaction conditions, and mechanisms.
Review
Chemistry, Multidisciplinary
Nadim Ayoub, Joumana Toufaily, Erwann Guenin, Gerald Enderlin
Summary: Lignocellulosic feedstocks can be used to generate biofuels and biochemicals, but methods using metal catalysts have some issues. This Review summarizes catalytic methods using metal and metal-free catalysts for oxidation reactions and demonstrates the potential of metal-free catalysts.
Article
Chemistry, Multidisciplinary
Tat Boonyakarn, Jan J. Wiesfeld, Miyuki Asakawa, Lulu Chen, Atsushi Fukuoka, Emiel J. M. Hensen, Kiyotaka Nakajima
Summary: An acetal protection strategy was used to efficiently synthesize 2,5-diformyfuran. Organic deposits formed during the reaction led to a decrease in catalyst activity, which could be resolved by sonication treatment.
Article
Chemistry, Physical
Dan Wu, Songwei Zhang, Willinton Y. Hernandez, Walid Baaziz, Ovidiu Ersen, Maya Marinova, Andrei Y. Khodakov, Vitaly V. Ordomsky
Summary: This novel supported metal bifunctional catalyst combines the advantages of promotion and bifunctionality, achieved by pretreating supported palladium catalysts with bromobenzene to create Bronsted acid sites. The catalyst shows unique catalytic properties in hydrodeoxygenation reactions with stable performance, yielding up to 96% at ambient temperature under 5 bar of H-2.
Review
Chemistry, Multidisciplinary
Yuanyong Yao, Shixue Chen, Meng Zhang
Summary: This review introduces the latest studies on the conversion of cellulose into 5-HMF. Solid acids, such as heterogeneous catalysts, have been widely used in this process, and some novel solid acids with Brønsted and/or Lewis acidic sites, such as sulfonated solid acids, carbon-based acids, and zeolite particles are listed.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Xiaohong Hu, Zhijian Li, Haiyong Wang, Haosheng Xin, Song Li, Chenguang Wang, Longlong Ma, Qiying Liu
Summary: This study reports a one-step preparation of 2-hexanol using 5-hydroxymethylfurfural (HMF) as a substrate, and investigates the relationship between carrier and catalytic activity. The results show that the 5% Au/ZrO2 catalyst achieves the highest yield of 2-hexanol, and exhibits excellent durability and significant reactivity on other biomass-derived substrates.
Review
Chemistry, Multidisciplinary
Zexing Huang, Jianhua Wang, Jing Lei, Wenguang Zhao, Hao Chen, Yongjun Yang, Qiong Xu, Xianxiang Liu
Summary: This review summarizes recent advances in the field of biomass-derived diol synthesis, discusses the roles of catalysts in the hydroconversion process, highlights the reaction mechanisms associated with each active center, and provides an outlook on the challenges and opportunities in related research.
FRONTIERS IN CHEMISTRY
(2022)
Review
Chemistry, Multidisciplinary
Han Wu, Rui Zhang, Yunqi Zhai, Xishang Song, Jian Xiong, Xiaoyun Li, Yina Qiao, Xuebin Lu, Zhihao Yu
Summary: This review focuses on exploring the interactions between solvent systems and the conversion of cellulose and its monosaccharides into HMF, including the effects on substrate conversion, reaction regulation, and product acquisition. The insights provided in this review are significant for the sustainable production of HMF from biomass feedstocks and the development of greener solvent systems.
Article
Chemistry, Multidisciplinary
Weizi Zhang, Xinxin Li, Shaoru Liu, Jianhao Qiu, Jiahuan An, Jianfeng Yao, Songlin Zuo, Bo Zhang, Haian Xia, Changzhi Li
Summary: In this study, Ag/TiO2 materials with different interfacial structures were prepared and used for the photocatalytic conversion of biomass-derived 5-HMF to value-added HMFCA. It was found that low-temperature reduction could enhance the photoinduced charge separation efficiency and the localized surface plasmon resonance effects. The 2.5% Ag/TiO2-LTR showed the highest HMFCA selectivity of 96.7% under visible-light illumination. However, the photocatalytic efficiency decreased significantly when the reduction temperature increased due to the encapsulation of Ag NPs by a thicker TiOx overlay.
Article
Chemistry, Multidisciplinary
Qingwen Lu, Xin Zhao, Ruiqi Fang, Yingwei Li
Summary: This study presents a novel method for preparing ultrasmall transition-metal nanoparticles embedded in hollow hierarchical carbon skeletons using a molten salt-assisted pyrolysis strategy. By adding molten salt, the pore size and metal sintering of the samples were controlled, resulting in Cu@HHC materials with remarkable catalytic performance and recycling stability.
Article
Chemistry, Multidisciplinary
Wanying Liang, Rui Zhu, Xinglong Li, Jin Deng, Yao Fu
Summary: A catalytic strategy for the photocatalytic dehydrogenation of HMF to DFF under visible-light illumination was reported. The developed method achieved high conversion and selectivity without the need for oxidizing agents or conventional hydrogen acceptors. Non-noble metal-modified CN as the photocatalyst showed improved separation and transfer efficiencies, leading to high photocatalytic performance.
Article
Energy & Fuels
Xiangbo Song, Yuhe Liao, Yuting Zhu, Pengyao Sun, Lungang Chen, Longlong Ma, Hongwei Yang, Chenguang Wang
Summary: This study discovered a slow-release effect of a heterogeneous catalyst induced by [Bmim]Cl ionic liquids, effectively converting biobased fructose to HMF with high yield and conversion rate. A mechanism of proton slow release induced by [Bmim]Cl was proposed, and various parameters were systematically studied, providing a novel and efficient strategy for converting biomass-based feedstock into fuel precursors.
Review
Biochemistry & Molecular Biology
Nor Azam Endot, Ramli Junid, Mohamad Shazwan Shah Jamil
Summary: This review summarizes the recent developments in the transformation of biobased 5-hydroxymethylfurfural (HMF) into a potential liquid fuel, 2,5-dimethylfuran (DMF). It focuses on the history of HMF conversion to DMF, ideal catalytic properties required, comparisons between noble and non-noble metals, bimetallic catalysts, and the impact of support and reaction conditions. Recommendations for future work and challenges faced are discussed.
Article
Chemistry, Multidisciplinary
Tongtong Zhang, Yaoping Hu, Liyuan Huai, Zhijin Gao, Jian Zhang
Summary: DPhSO is reported as an active and environmentally friendly solvent for synthesizing HMF from fructose, with nearly 100% conversion efficiency. The reaction mechanism of DPhSO-catalyzed HMF formation was analyzed through various experiments and theoretical calculations.
Review
Chemistry, Multidisciplinary
Phuong Hoang Tran
Summary: This Review provides an overview of the latest developments in efficient catalytic systems for the sustainable conversion of HMF to DFF, which is a significant building block chemical derived from sustainable carbohydrates and has promising applications in pharmaceuticals and polymers.
Review
Biochemistry & Molecular Biology
Cristina Garcia-Sancho, Josefa Maria Merida-Robles, Juan Antonio Cecilia-Buenestado, Ramon Moreno-Tost, Pedro Jesus Maireles-Torres
Summary: There is currently a strong interest in sustainable and green technologies for the production of biofuels and chemicals. Lignocellulosic biomass is being researched as an alternative to fossil resources, as its components can be transformed into valuable chemicals. Furfural and levulinic acid, derived from lignocellulosic sugars, are important platform molecules that can be converted into a variety of chemicals. Copper-based catalysts have been proposed as a cheaper alternative to the scarce and expensive noble metal catalysts commonly used. This review focuses on the hydrogenation of furfural and levulinic acid using Cu-based catalysts, and the production of various chemicals such as furfuryl alcohol and gamma-valerolactone.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Eddy Dib, Edwin B. Clatworthy, Arnold A. Paecklar, Julien Grand, Nicolas Barrier, Svetlana Mintova
Summary: Using solid-state 29Si nuclear magnetic resonance (NMR), this study demonstrates that the distribution of aluminum within the framework of Na,Cs-RHO type zeolites plays a crucial role in determining CO2 adsorption capacity and structural flexibility. The flexibility of the zeolite framework is not solely dependent on the type of cation loading, but also on the distribution of Si species and pore aperture shape.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Applied
Maxime Debost, Edwin B. Clatworthy, Julien Grand, Nicolas Barrier, Nikolai Nesterenko, Jean-Pierre Gilson, Philippe Boullay, Svetlana Mintova
Summary: There is a growing demand for porous materials with the ability to separate natural gas components, mainly CH4 and CO2. Zeolites with flexible small pores are interesting due to their high sorption capacity and selective separation ability. By introducing different extra-framework cations, such as Na+, K+, Cs+, the pore size, cavity size, and shape of the zeolite can be controlled, allowing for selective access to the pores and cages. The synthesis of nanosized CHA zeolites with optimized quantities of extra-framework cations and hydrothermal conditions was successfully achieved, resulting in a high CO2 storage capacity and making it an ideal candidate for gas separation applications.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Physical
Raquel Lopez-Asensio, Juan Antonio Cecilia-Buenestado, Concepcion Herrera-Delgado, Maria Angeles Larrubia-Vargas, Cristina Garcia-Sancho, Pedro Jesus Maireles-Torres, Ramon Moreno-Tost
Summary: A family of Mg/Al hydrotalcites was synthesized as precursors for MgAlOx mixed oxides. The mixed oxides showed catalytic activity in the reduction of furfural to furfuryl alcohol using isopropanol as a hydrogen donor. Different catalytic parameters were tested and the adsorption behavior of furfural and isopropanol on the catalyst was analyzed. The results showed that the catalytic performance was influenced by the basicity of the catalysts and deactivation was caused by adsorbed species, mainly furfural-derived compounds.
Editorial Material
Multidisciplinary Sciences
Svetlana Mintova
NATIONAL SCIENCE REVIEW
(2023)
Review
Multidisciplinary Sciences
Nikolai Nesterenko, Izabel C. Medeiros-Costa, Edwin B. Clatworthy, Hugo Cruchade, Stanislav Konnov, Jean-Pierre Dath, Jean-Pierre Gilson, Svetlana Mintova
Summary: Methane-to-chemicals processes offer a chance to enhance the decarbonization potential of renewable energy and unlock sustainability value. Integrating methane-to-chemicals process with the downstream industry can lead to a greener and more sustainable future. Gas-to-chemicals is an efficient tool for boosting decarbonization.
NATIONAL SCIENCE REVIEW
(2023)
Article
Chemistry, Applied
Ge Yang, Yanjiao Wang, Mengling Sun, Panpan Xu, Chunzheng Wang, Ke Huang, Heqing Jiang, Svetlana Mintova, Hailing Guo
Summary: The amino-modification of filler material is a common strategy for optimizing the performance of mixed matrix membranes (MMMs). However, in this study, it was found that the in-situ introduction of amino groups into the HKUST-1 filler had negative effects on the gas separation performance of the MMMs, suggesting that using MOFs fillers with large aperture size may not support H2/CO2 separation. This work further investigates the diffusion-adsorption coupling control mechanism of fillers with large aperture size, providing insights for the development of MMMs materials.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Physical
Jimmy Nelson Appaturi, Pedro Maireles-Torres, Taghrid S. S. Alomar, Najla AlMasoud, Zeinhom M. M. El-Bahy, Tau Chuan Ling, Eng-Poh Ng
Summary: Acetylation of glycerol to produce monoacetin (MAT), diacetin (DAT), and triacetin (TAT) was studied using NiO-supported CeO2 catalysts. Different amounts of NiO (x = 9, 27, and 45 wt%) were supported on CeO2 through a sol-gel technique, with hexadecyltrimethylammonium bromide (CTABr) used as a porogen. The most active catalyst was found to be 27NiO/CeO2, achieving 97.6% glycerol conversion with 70.5% selectivity to TAT at 170°C.
Article
Chemistry, Physical
A. C. Alba-Rubio, J. A. Cecilia, C. P. Jimenez-Gomez, C. Garcia-Sancho, A. Cassidy, R. Moreno-Tost, P. Maireles-Torres
Summary: A series of Cu-MnOx/SiO2 catalysts were synthesized using different methodologies for the incorporation of Cu and MnOx species. Characterization techniques were used to study the interaction between Cu and MnOx. The catalysts were evaluated for the hydrogenation of furfural, with Cu promoting hydrogenolysis and MnOx facilitating the formation of furfuryl alcohol.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Inorganic & Nuclear
Diego S. D. Lima, Laura L. L. Silva, Iago W. W. Zapelini, Svetlana Mintova, Leandro Martins
Summary: Two MWW zeolite catalysts, MCM-22 (3D) and ITQ-2 (2D), were synthesized and functionalized for glycerol ketalization reaction. The accessibility and hydrophobicity of the catalysts were adjusted to improve reaction performance. ITQ-2 showed better capacity for bulkier chemicals and reduced interaction with glycerol. The functionalized catalysts facilitated glycerol dispersion and eliminated the need for additional solvent.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Mohammad Fahda, Louwanda Lakiss, Kamila Goldyn, Edwin Clatworthy, Marie Desmurs, Jean-Pierre Gilson, Svetlana Mintova, Valentin Valtchev
Summary: Non-chemical post-synthetic approach using constant pressure can shrink zeolite crystals, enhancing their catalytic activity by improving molecular diffusion.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Abdallah Amedlous, Charly Helaine, Remy Guillet-Nicolas, Oleg Lebedev, Samuel Valable, Svetlana Mintova
Summary: In this study, we report a method for preparing nanosized gadolinium (Gd-LTL) zeolite crystals for oxygen delivery and magnetic resonance imaging (MRI). The nanosized Gd-LTL zeolite showed high colloidal stability and remarkable crystallinity, with no leaching of gadolinium ions observed. In addition, the in vitro toxicity study revealed no toxicity for nanosized K-LTL and Gd-LTL zeolites even at high concentrations. This study provides promising guidelines for the design of smart biocompatible nanosized zeolites with gas-delivery and MRI properties.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Engineering, Chemical
Ilaha Hasanova, Nivetha Jeyachandran, Rocio Maderuelo-Solera, Pedro Maireles-Torres, Juan Antonio Cecilia, Cristina Giordano
Summary: This research focuses on the design of non-noble transition metal-based bimetallic catalysts synthesized through a green sol-gel process. These catalysts exhibit high surface area and well-defined crystalline nanoparticles. The potential of these catalysts for biomass-related model reactions is also demonstrated.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Chemistry, Physical
Ming Cheng, Hugo Cruchade, Ludovic Pinard, Eddy Dib, Honghai Liu, Jiujiang Wang, Xinmei Liu, Zi-Feng Yan, Zhengxing Qin, Svetlana Mintova
Summary: Molybdenum-modified HZSM-5 catalysts are widely used for methane dehydroaromatization but suffer from rapid deactivation due to coke formation. This study proposes a new synthesis approach to improve the performance and stability of the catalysts by removing the crystal core. The results show that removing the crystal core effectively mitigates catalyst deactivation by relocating the coke from micropores to macropores, and the alkaline treatment further enhances the catalyst properties.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Sajjad Ghojavand, Eddy Dib, Svetlana Mintova
Summary: Numerous evidence suggests that zeolitic materials exhibit intrinsic flexibility due to the spring-like behavior of Si-O and Al-O bonds and the distortion ability of Si-O-Si and Al-O-Si angles. The understanding of flexibility origin and its adjustment for high adsorption selectivity in zeolites is a great challenge. Zeolite flexibility can be classified into three categories: temperature and pressure-induced, guest-induced, and compositionally-induced. Overcoming the challenges in experimental evaluations will facilitate the design of novel selective adsorbents.
