Article
Chemistry, Inorganic & Nuclear
Jarinya Sittiwong, Sininat Boonmark, Watinee Nunthakitgoson, Thana Maihom, Chularat Wattanakit, Jumras Limtrakul
Summary: The study investigates the catalytic transfer hydrogenation of furfural to furfuryl alcohol on UiO-66 metal-organic frameworks, revealing that the hydrated active site is favored over the dehydrated active site. Hf-UiO-66 provides lower activation energy compared to Zr-UiO-66 and Ti-UiO-66, indicating a higher Lewis acidity. The UiO-66 active site plays a significant role in activating the carbonyl C=O of furfural.
INORGANIC CHEMISTRY
(2021)
Article
Engineering, Chemical
Rocio Maderuelo-Solera, Stefan Richter, Carmen P. Jimenez-Gomez, Cristina Garcia-Sancho, Francisco J. Garcia-Mateos, Juana M. Rosas, Ramon Moreno-Tost, Juan A. Cecilia, Pedro Maireles-Torres
Summary: The performance of Si/Zr catalysts is determined by the Zr content, with a high Zr proportion favoring the formation of Lewis acid sites and low Bronsted acidity promoting dehydration reactions, leading to a variety of reaction products.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Applied
Roman Barakov, Nataliya Shcherban, Oleg Petrov, Daniel N. Rainer, Martin Kubu, Jiri Cejka, Mariya Shamzhy, Maksym Opanasenko
Summary: Conversion of renewable compounds to versatile platform molecules over environmentally friendly heterogeneous catalysts is in high demand. Bifunctional Zr,Al-containing large-pore zeolites have been shown to be active, selective, and reusable catalysts for the transformation of biomass-derived furfural to gamma-valerolactone. Optimizing the catalyst structure and chemical composition enables achieving high yields of gamma-valerolactone comparable to or even exceeding values reported for homogeneous or heterogeneous catalysis.
Article
Chemistry, Physical
Wansi Lin, Yue Wang, Junhua Zhang, Huai Liu, Lincai Peng
Summary: In this study, lignin was used to assemble well-dispersed Zr nanoparticles in polyacrylonitrile nanofiber by electrospinning technology. The resulting composite exhibited abundant Lewis acid-base sites, which conferred remarkable catalytic activity and excellent recycling stability in various carbonyl chemicals conversion.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Physical
Punitharaj Vasanthakumar, Duraisamy Senthil Raja, Dharmalingam Sindhuja, Srividya Swaminathan, Ramasamy Karvembu
Summary: Crystalline, porous Fe-Ni mixed-metal metal-organic frameworks were successfully synthesized and employed as catalysts for transfer hydrogenation of biomass derivatives. NH2-MIL-88B(Fe2Ni) exhibited high catalytic activity with short reaction time, making it an environmentally benign and recyclable catalyst for the synthesis of furfuryl alcohol and gamma-valerolactone.
MOLECULAR CATALYSIS
(2021)
Article
Energy & Fuels
Xueying Gao, Xin Yu, Lincai Peng, Liang He, Junhua Zhang
Summary: A magnetically-recoverable multifunctional catalyst was tailored for the conversion of furfural to gamma-valerolactone, achieving a high yield with iso-propanol as a hydrogen donor and solvent. The catalyst showed good reusability and sustainability with the process intensification based on one-pot reaction and mild operating conditions without gaseous hydrogen.
Review
Chemistry, Multidisciplinary
Jianhua Wang, Zhiyan Xiang, Zexing Huang, Qiong Xu, Dulin Yin
Summary: This article focuses on the one-pot synthesis of GVL from FAL, aiming to explore the rational design and utilization of environmentally friendly bifunctional catalysts with high efficiency in this reaction, as well as discussing future research opportunities in bi- or multi-functional catalysts for one-pot GVL synthesis.
FRONTIERS IN CHEMISTRY
(2022)
Article
Energy & Fuels
Adrian Garcia, Rita Sanchez-Tovar, Pablo J. Miguel, Elena Montejano-Nares, Francisco Ivars-Barcelo, Juan Antonio Cecilia, Benjamin Torres-Olea, Benjamin Solsona
Summary: This study demonstrates the synergistic effect of tin and zirconium for the one-pot transformation of furfural into γ-valerolactone. Furfural, a versatile product derived from lignocellulosic biomass, can be converted into valuable γ-valerolactone, which has various applications in chemicals, fuels, and solvents.
Article
Chemistry, Applied
Dialia A. Abusuek, Olga P. Tkachenko, Alexey V. Bykov, Alexander I. Sidorov, Valentina G. Matveeva, Mikhail G. Sulman, Linda Zh. Nikoshvili
Summary: This study synthesized ruthenium-containing catalysts by impregnating different silicate modulus (40, 80, or 400) HZSM-5 with ruthenium precursor, resulting in the formation of oxidized Ru(III) and Ru(IV) species on the catalyst surface. The synthesized catalysts showed high catalytic activity with over 98% LA conversion and 100% GVL selectivity under mild conditions (100 degrees C, 1 MPa of H2) in aqueous medium. The observed catalytic activity mainly depends on the concentration of strong Lewis acid centers and the surface content of RuO2.
Article
Chemistry, Multidisciplinary
Yanni Zheng, Jiaxuan Zang, Qian Zhang, Xiaoping Wu, Songbai Qiu, Qingwei Meng, Tiejun Wang
Summary: In this study, a Cu/SiO2 catalyst derived from copper phyllosilicate was developed and demonstrated distinctive catalytic activity in the ethanol-induced conversion of furfural into 1,4-pentanediol. The proposed novel ethanol-induced conversion route involves acid-catalyzed etherification of furfuryl alcohol and ethanol, leading to the formation of 2-ethoxymethyl-furan as the key intermediate, which further undergoes degradation and hydrogenation to yield 1,4-pentanediol. This work represents an important progress in developing an efficient strategy for ethanol-induced transformation of furfural.
Article
Energy & Fuels
Yao Liu, Feiyi Chen, Junhua Zhang, Liang He, Lincai Peng
Summary: Organic acid-assisted metal-lignocellulosic hybrid improves catalytic performance for the CTH of carbonyl compounds, showing excellent activity and stability.
Article
Energy & Fuels
Xialing Lin, Mingrui Li, Yumei Jian, Jinshu Huang, Song Yang, Hu Li
Summary: A new and recyclable catalytic system using ZrCl4 as the catalyst has been developed for the direct conversion of furfural to gamma-Valerolactone. This bifunctional catalyst showed high catalytic activity and recyclability at high temperature, demonstrating potential for one-pot multi-step biomass valorization.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2021)
Article
Chemistry, Multidisciplinary
Rodiansono, Maria Dewi Astuti, Kamilia Mustikasari, Sadang Husain, Fathur Razi Ansyah, Takayoshi Hara, Shogo Shimazu
Summary: Bimetallic nickel-tin alloys supported on aluminum hydroxide have been successfully utilized as catalysts for the conversion of furfural and levulinic acid into 1,4-pentanediol. The prepared RNi-Sn(1.4)/AlOH catalyst showed the highest yield of 1,4-PeD (78%). Reduction of the catalyst with H-2 resulted in the formation of Ni-Sn alloy phases and the transformation of aluminum hydroxide to amorphous alumina, leading to increased yields of the desired product.
Article
Energy & Fuels
Yuewen Shao, Qingyin Li, Xinyi Dong, Junzhe Wang, Kai Sun, Lijun Zhang, Shu Zhang, Leilei Xu, Xiangzhou Yuan, Xun Hu
Summary: This study achieved a unprecedented yield of 90.5% in the direct conversion of biomass-derived furfural to GVL through consecutive hydrogenation and acid-catalyzed reactions over CuAl and a co-catalyst (i.e. H-ZSM-5) in ethanol. The abundance of hydrogenation sites and acidic sites plays a key role in determining the reaction network and product transfer, with different mechanisms of deactivation for the acid and hydrogenation catalysts needing consideration in future catalyst development.
Article
Energy & Fuels
Yao Liu, Rulu Huang, Junhua Zhang, Liang He, Lincai Peng
Summary: The hydrogenation reduction of furfural to furfuryl alcohol using a multifunctional zirconium-based hybrid catalyst showed high efficiency and remarkable cycle stability. Mechanistic studies demonstrated FAL reduction via intermolecular hydrogen transfer, and the catalyst also efficiently converted various biomass-derived carboxides to corresponding alcohols with high yields.
Article
Chemistry, Physical
Haojie Li, Bingke Yang, Zhen Yao, Xuetao Wang, Kaiming Shen, Mengjie Liu
Summary: This study systematically investigates the influence of metal and nonmetal element doping on the photochemical properties of g-C3N4 for efficient catalytic AB hydrogen production. It provides a design method for high performance bifunctional catalysts of photocatalysis and metal catalysis. The results show that both non-metals (B, P) and metals (Ru, Ni) have efficient regulatory effects on the band structure of g-C3N4, resulting in a reduced band gap and improved hydrogen production. The study offers a theoretical method for the coupling of metal catalysis/photocatalysis ammonia borane to produce hydrogen.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Shrouq Mujahed, Davide Gandolfo, Luigi Vaccaro, Evgueni Kirillov, Dmitri Gelman
Summary: In this study, a high-valent Ru(IV) bifunctional catalyst was successfully applied for the hydrosilylation of various functional groups. The high-valent hydride complexes showed high chemoselectivity and affinity towards reducing polar bonds. The scope, limitations, and plausible mechanism of the reaction were described.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Yongzhen Peng, Kongchen Xia, Qi Wu
Summary: In this study, we report an engineered cyclohexanone monooxygenase that can be used for the asymmetric synthesis of chiral alpha-deuterated carbonyl compounds via enantioselective reductive dehalogenation. The engineered enzyme exhibits good chemoselectivity, stereoselectivity, and d-incorporation, making it a promising method for the synthesis of deuterated drugs.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Qi Yang, Ruixuan Xu, Hongqi Nie, Qilong Yan, Jun Liu, Jiuyu Chen, Yunlan Sun
Summary: The adsorption and decomposition processes of ammonium perchlorate (AP) on pure-Al and Al2O3/Al surfaces were investigated using density functional theory. The results showed that the pure-Al surface is more conducive to the decomposition of AP and the activation of NH3, while the Al2O3/Al surface promotes the disengagement of H and NH3 decomposition.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Yudong Hu, Guochao Xu, Ye Ni
Summary: This study identified a novel phenylalanine dehydrogenase (QtPDH) with high catalytic efficiency and thermal stability, making it a promising biocatalyst for industrial production of bulky aromatic primary amines. QtPDH exhibited a broader substrate specificity and significantly longer half-life compared to BbPDH.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Weiling Zhao, Zhiling Huang, Hui Shen, Xianglong Li, Shaofen Zhao, Bo Xie, Shengjie Xia
Summary: This study investigated the effects of metal doping and crystal plane selection on the CO2 adsorption properties of MgO using density functional theory (DFT) methods. The results showed that the appropriate crystal plane and metal doping can improve the adsorption properties of MgO on CO2. The influence of different crystal planes and metal dopants on CO2 adsorption properties varied significantly. The research provides some references for experimental studies on CO2 adsorption by MgO by combining the dual modification of crystal plane and doped metal.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Jie Zhang, Jinwei Chen, Zongbo Shi, Junyu Zhao, Runsheng Zhuo, Ruilin Wang
Summary: In this study, a double-layered silicalite-1 support with high specific surface area was synthesized, and a magnesium modification strategy was adopted to improve the catalytic activity and stability of the zinc-based catalyst. The modified catalyst showed enhanced propylene selectivity and anti-coking property.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Pei-Sen Gao, Chang-Wang Pan, Cheng Liu, Wen -Tong Chen
Summary: Asymmetric electrocatalysis offers a unique approach to obtain enantioenriched molecules that are difficult to obtain through conventional methods. This study developed a novel bifunctional electrocatalyst, enabling the oxidative kinetic resolution of chiral 1,4-diols and gamma-lactones. The work demonstrates the potential of bifunctional electrocatalysis for asymmetric synthetic methods and its importance in the development of novel electrocatalytic methods.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Qinzhe Lin, Xuanjin Lv, Xianming Zeng, Mengning Zhong, Qiyun Wu, Huilin Ren, Shenpeng Xu, Wentian Chen, Wenting Du, Jun Li
Summary: The catalytic efficiency of engineered IRED M5 was found to be relatively low when tasked with a bulky amine substrate. Rational design led to the mutants M203V and F260A, with F260A exhibiting a substantial improvement in conversion and stereoselectivity. The study revealed the potential molecular mechanisms underlying the effect of F260A and M203V on catalytic performance.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Zhishuai Wang, Fengyun Su, Hailong Cao, Mengzhen Tian, Xiang Li, Haiquan Xie, Xiaoli Jin, Zhengdao Li, Xin Ying Kong
Summary: In this study, the efficiency of photocatalytic CO2 reduction was significantly enhanced by incorporating nickel oxide onto niobium pentoxide. The resulting catalyst showed remarkable methane and carbon monoxide production improvements.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
A. Yu. Sidorenko, Yu. M. Kurban, T. V. Khalimonyuk, I. V. Il'ina, N. S. Li-Zhulanov, O. S. Patrusheva, V. V. Goltsova, M. P. Bei, Zh. V. Ihnatovich, J. Warna, K. P. Volcho, N. F. Salakhutdinov, D. Yu. Murzin, V. E. Agabekov
Summary: This study provides a comprehensive investigation into the catalytic condensation of renewable 3-carene with formaldehyde for the one-step preparation of terpenoid trans-4-hydroxymethyl-2-carene. Various acids and alumino-silicates were found to catalyze the reaction, but the selectivity to the desired product was limited. Phosphoric acid showed the highest selectivity, and an excess of formaldehyde or catalyst loading significantly increased the yield of the target product. Water presence also led to increased selectivity. Additionally, a detailed mechanism for the 3-carene condensation with formaldehyde was proposed and confirmed through kinetic modeling.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Meng-Yu Rong, Jing Nie, Shen Li, Jun-An Ma
Summary: We synthesized a new class of chiral quaternary ammonium salts and used them as catalysts in phase-transfer catalytic asymmetric alkylation. By employing these catalysts, we obtained a series of chiral fluorinated aromatic alpha-amino acid derivatives with high yields and enantioselectivities.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Zhaozhou Wei, Guangtao Wei, Huixian Che, Deyuan Xiong, Linye Zhang, Ruihua Xue, Yalin Tang, Xuanli Lu
Summary: This study demonstrates that small-sized graphite crystallite and highly defective carbon-based catalysts can increase the -SO3H density of the catalysts and modulate their surface electronic properties, leading to improved efficiency in the alpha-pinene hydration reaction. The reduction of graphite crystallite size is considered a critical step in enhancing the selectivity of alpha-terpineol.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Kempanna S. Kanakikodi, Nagendra Kulal, K. S. Subramanya, M. S. Puneethkumar, Bhavana B. Kulkarni, Ganapati Shanbhag, Sanjeev P. Maradur
Summary: An effective and highly selective protocol for synthesizing asymmetric organic carbonates using dimethyl carbonate (DMC) as a reactant and solvent has been developed. The performance of CeO2 nanostructures with different morphologies in the carbonate interchange reaction (CIR) of alcohols was investigated, and the CeO2 nano-catalyst with rod morphology exhibited the highest oxygen vacancy and remarkable enhancement in conversion. The CeO2 characterization data revealed that the exposed active sites, defect density, coordination state of surface atoms, and reducibility of the catalytic materials are the contributing factors to its high catalytic activity. CeO2 can be easily recovered and reused for multiple cycles.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Yanzhao Gao, Xianglei Meng, Shiqi Huang, Hui Wu, Liantao Jiang, Yu Zhou, Yuting Song, Yanyan Diao
Summary: Gamma alumina modified with alkaline earth metal shows improved catalytic performance for hydrogenation reactions. Pd catalysts supported by Al2O3 and Mg-modified Al2O3 were synthesized and their structure, composition, and surface acidity were investigated. The results showed that Pd/MgO-Al2O3-2 catalyst exhibited the best catalytic performance due to its metallic state palladium and weak acid sites.
MOLECULAR CATALYSIS
(2024)