Article
Energy & Fuels
Murali Kondeboina, Siva Sankar Enumula, K. Saidulu Reddy, Prathap Challa, David Raju Burri, Seetha Rama Rao Kamaraju
Summary: The addition of Ni to Co/γ-Al2O3 catalyst enhances the catalytic activity and coke resistance capacity of the resulting bimetallic catalyst, resulting in the formation of Ni-Co alloy as evidenced by XRD, H-2-TPR, and XPS analyses. TEM analyses show that smaller particles are formed in the bimetallic Ni-Co/γ-Al2O3 catalyst, influencing the rate of GVL formation. Furthermore, among the GVL feedstocks, ethyl levulinate proves to be the most consistently yielding GVL over the bimetallic Ni-Co/γ-Al2O3 catalyst during a 24-hour study.
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
Green & Sustainable Science & Technology
Eleni Anagnostopoulou, Panagiotis Lilas, Perikleia Diamantopoulou, Christos Fakas, Ioannis Krithinakis, Eleni Patatsi, Elpida Gabrielatou, Antoine P. van Muyden, Paul J. Dyson, Georgios Papadogianakis
Summary: Water-dispersible ruthenium nanoparticles stabilized by water-soluble polymers have shown high catalytic activities and stabilities, achieving high selectivity in the hydrogenation of levulinic acid to produce gamma-valerolactone. This study holds significance for the production of advanced biofuels, bio-based chemicals, and materials.
Article
Chemistry, Physical
Yunfei Zhang, Yi Shen
Summary: A series of carbon felts supported by metallic metals electrodes were fabricated via electro-deposition process and evaluated for electrocatalytic hydrogenation of levulinic acid. Among them, Pb/CFs and Cd/CFs electrodes showed superior performance and were considered as some of the best electrodes for electrocatalytic hydrogenation reported in the literature.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Sharda Kondawar, Chandrashekhar Rode
Summary: This short review summarizes recent findings on the role of ionic liquids (ILs) in catalyzing the hydrogenation of levulinic acid (LA) to gamma valerolactone (GVL). It provides a brief introduction to the environmentally friendly nature of ILs as catalysts and discusses various types of ILs used for the hydrogenation of LA to GVL. The unique characteristics of ILs responsible for the hydrogenation reaction are explained, along with the current and upcoming scenarios of IL-catalyzed hydrogenation of LA to GVL.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2022)
Article
Chemistry, Physical
Diego A. Roa, Juventino J. Garcia
Summary: A titanium-based catalytic system using a commercially available titanocene complex was developed for the hydrogenation of levulinic acid to y-valerolactone. The method achieved excellent yields under mild reaction conditions. Key mechanistic insights into the main species involved in the catalytic cycle were also documented.
JOURNAL OF CATALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Jingru Wang, Shanhui Zhu, Yunwei Wang, Yingyong Wang, Guoqiang Jin, Xili Tong, Xiangyun Guo
Summary: SiC supported Ru-Ir bimetallic catalyst shows enhanced catalytic activity for hydrogenation of levulinic acid into gamma-valemlactone under mild conditions. The enhanced activity is attributed to the electronic synergistic effect among Ru, Ir, and SiC.The adsorption and hydrogenation of levulinic acid molecules occur on the surface of SiC.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Chemistry, Physical
Jing Bai, Canwei Cheng, Yong Liu, Chenguang Wang, Yuhe Liao, Lungang Chen, Longlong Ma
Summary: In this study, Ni-based catalysts were prepared using the impregnation method, among which NiCo/Al2O3 exhibited the best performance with a GVL yield of 99.5%. The incorporation of Ni and Co metals formed a Ni-Co alloy, significantly increasing the activity and stability for the hydrogenation of LA to GVL. The reuse potential of 15%Ni-15%Co/Al2O3 showed good stability up to 5 cycles without obvious deactivation.
MOLECULAR CATALYSIS
(2021)
Article
Energy & Fuels
Tirath Raj, K. Chandrasekhar, Rajesh Banu, Jeong-Jun Yoon, Gopalakrishnan Kumar, Sang-Hyoun Kim
Summary: The review comprehensively summarized recent updates and catalytic approaches for GVL production, as well as its applications in biomass deconstruction, and discussed advancements, challenges, and future perspectives in GVL-based biorefinery.
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
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
Engineering, Environmental
Jingsong Yang, Ruidong Shi, Gongbing Zhou
Summary: In this study, Ru nanoparticles with tunable electronic state were combined with 3D hierarchical carbon nanoflowers. It was found that pyridinic-N species facilitated the formation of electron-rich Ru, thereby enhancing the activity of selective hydrogenation reactions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Yuewen Shao, Shuaijie Ba, Kai Sun, Guoming Gao, Mengjiao Fan, Junzhe Wang, Huailin Fan, Lijun Zhang, Xun Hu
Summary: The Co-Mg-Al and Co-Al catalysts showed excellent selectivity and catalytic activity in the production of GVL and 1,4-PDO from ethyl levulinate. The synergy between acidic sites and hydrogenation sites was key to achieving outstanding catalytic performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Asima Sultana, Samadhan Lomate, Tadahiro Fujitani
Summary: This study evaluated unsupported simple oxide catalysts with varying acid-base properties for the hydrogenation of levulinic acid to gamma-valerolactone using formic acid in water. Among the different oxides tested, MgO catalyst showed high activity. Specifically, the MgO-UBE catalyst achieved 100% LA conversion and 100% selectivity to GVL at 270℃. The presence of Mg(OH)2 and a higher number of Lewis acid-base pair sites, Mg2+ O-LC2- (LC), were determined to be crucial for achieving high LA conversion and selectivity to GVL.
FRONTIERS IN ENERGY RESEARCH
(2023)
Article
Engineering, Environmental
Zhenzhen Liu, Xueying Gao, Guoyong Song
Summary: In this study, an efficient and recyclable catalyst combining low-loaded Ru and abundant alumina supported on nitrogen-doped carbon was developed for the hydrogenation of cellulose-derived levulinic acid into valuable ?-valerolactone. The catalyst showed exceptional catalytic efficiency and stability, achieving a high turnover number and turnover frequency in a single batch reaction. The results emphasize the importance of the synergy between low-loaded Ru and abundant alumina, providing a new approach for designing active and stable catalysts with low Ru loading.
CHEMICAL ENGINEERING JOURNAL
(2023)
