Article
Chemistry, Physical
Matthew J. Kline, Sampath A. Karunarathne, Thomas J. Schwartz, M. Clayton Wheeler
Summary: This study explores the synthesis and characterization of nickel catalysts for the selective hydrogenation of 2-methylnaphthalene. The results show that the support identity, catalyst loading, and reaction temperature all have an impact on the selectivity of the hydrogenation reaction.
APPLIED CATALYSIS A-GENERAL
(2022)
Review
Chemistry, Physical
Claire A. L. Lidston, Sarah M. Severson, Brooks A. Abel, Geoffrey W. Coates
Summary: The ring-opening copolymerization (ROCOP) of epoxides with CO2 or cyclic anhydrides using multifunctional catalysts has been explored as a versatile route for synthesizing a wide range of polycarbonate and polyester copolymers. Covalently tethering the Lewis acid catalyst and cocatalyst together has been shown to increase both catalyst activity and selectivity in epoxide ROCOP. This review examines the development of multifunctional catalysts for copolymerization of epoxides with CO2, cyclic anhydrides, carbonyl sulfide (COS), and cyclic thioanhydrides, and evaluates how the mechanisms of these catalysts lead to improved activity and selectivity in ROCOP.
Article
Chemistry, Physical
Ke Jin, Chengyan Wen, Qian Jiang, Xiuzheng Zhuang, Lungang Chen, Longlong Ma, Chenguang Wang, Qi Zhang
Summary: Thermal catalytic conversion of CO2 to produce high-value gasoline is a promising and sustainable way to deal with greenhouse gases and alleviate the energy crisis and environmental problems. An Fe/C catalyst coupled with HZSM-5 as a tandem catalyst has been developed, showing a high gasoline space-time yield of 91.2 mu mol(CO2) g(Fe)(-1) s(-1). The catalyst contains three active sites (Fe3O4, Fe5C2, and acid sites) that synergistically catalyze a tandem reaction, providing a green and efficient catalyst for the conversion of CO2 to gasoline.
SUSTAINABLE ENERGY & FUELS
(2023)
Review
Chemistry, Physical
Malayil Gopalan Sibi, Deepak Verma, Jaehoon Kim
Summary: This review critically discusses catalytic systems for the direct production of aromatics from CO2 via the methanol-mediated and modified Fischer-Tropsch synthesis pathways, covering aspects such as acid sites, catalytic performance, Si/Al ratios of zeolites, proximity between metal oxide and zeolite, and reaction conditions.
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING
(2022)
Article
Chemistry, Applied
Chenguang Jiang, Yonggang Wang, Haiyong Zhang, Xiongchao Lin, KeChang Xie
Summary: In this study, H beta zeolites and NiMoC/H beta-Mx catalysts were successfully prepared using different molecular weight of PDADMAC as a template. The influence of PDADMAC molecular weight on the catalyst performance and the importance of mesopore diameter and acid sites ratio were studied for aromatics hydrogenation. The NMCH-M3 catalyst with PDADMAC molecular weight of 400,000-500,000 exhibited excellent hydrogenation performance in both model compounds and real oils.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Han Wang, Sheng Fan, Shujia Guo, Sen Wang, Zhangfeng Qin, Mei Dong, Huaqing Zhu, Weibin Fan, Jianguo Wang
Summary: The authors report a highly active InZrOx-Beta tandem catalyst for the direct conversion of CO2 to butane, and develop a surface silica protection strategy to improve catalytic stability by inhibiting the migration of indium species.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Jianbo Zhao, Haifeng Yuan, Guang Yang, Yingfan Liu, Xiaomei Qin, Zheng Chen, Cheong Weng-Chon, Liming Zhou, Shaoming Fang
Summary: The Au-Pt bimetallic nanoparticles immobilized on SBA-15 were prepared with uniform size and existing in the form of alloy structure, exhibiting higher activity and selectivity compared to monometallic catalysts. The observed properties were attributed to the synergic effect between Au and Pt, enhancing abilities of hydrogen dissociation and adsorption and activation of quinoline. This precise synthetic strategy provides a new and main approach for selective hydrogenations with high performance.
Article
Chemistry, Multidisciplinary
Marlene Fuhrer, Tomas van Haasterecht, Johannes Hendrik Bitter
Summary: This study demonstrates the potential of carbon supported Mo and W carbides to replace Pt in the hydrogenation of cinnamaldehyde. Although the carbide catalysts are less active than Pt, both the carbides and Pt exhibit selectivity towards C=C hydrogenation, with the carbides also producing beta-methylstyrene.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Applied
Byeongju Song, Jeongmyeong Kim, Iljun Chung, Yongju Yun
Summary: The catalytic properties of Pt catalysts supported on mesoporous silica were studied in the enantio-selective hydrogenation of ethyl pyruvate. The results showed that the pore structure and size of the m-SiO2 supports significantly influenced both the activity and enantioselectivity. The use of specific modifiers and H-2 pressure further improved the performance of the catalysts.
Article
Chemistry, Physical
Wen Li, Guowu Zhan, Xiaobin Liu, Yihua Yue, Kok Bing Tan, Jia Wang, Jiale Huang, Qingbiao Li
Summary: In this study, integrated ZnZrOx/ZSM-5 catalysts with adjustable intimacy of the two components were designed for CO2 hydrogenation to aromatics. The intimacy was tuned using rice husk derived-SiO2 (bio-SiO2) as a platform, and the amount of biomass during catalyst fabrication was changed. It was found that optimizing the intimacy significantly improved the aromatics selectivity. Importantly, the dimensionless number intimacy was quantified, and it acted as a descriptor governing the aromatics selectivity by boosting the transfer and conversion of intermediates from metallic sites to acidic sites.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Maosheng Li, Shuai Zhang, Xiaoyong Zhang, Yanchao Wang, Jinlong Chen, Youhua Tao, Xianhong Wang
Summary: The study describes an effective unimolecular anion-binding organocatalysis for ring-opening polymerization of O-carboxyanhydrides (OCAs), achieving the synthesis of highly isotactic poly(phenyllactic acid) (Ph-PLA) through a dynamic cooperative anion-binding mechanism. This approach addresses the challenge of synthesizing high molecular weight stereoregular polyesters by facilitating efficient chain propagation and maintaining high selectivity for OCA ring-opening over side reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Applied
N. Catherin, E. Blanco, D. Laurenti, L. Piccolo, F. Simonet, C. Lorentz, E. Leclerc, V Calemma, C. Geantet
Summary: The research explored the performance of various transition metal sulfides supported on Y zeolites in gas-phase decalin hydroconversion under high hydrogen pressure (5 MPa) and in the presence of 0.8% H2S concentration. The study revealed that catalytic activity was enhanced by using ternary sulfides, such as noble metal-based sulfides, leading to high decalin conversion levels and ring opening products.
Article
Chemistry, Multidisciplinary
Chengshan Dai, Ying Zhang, Junnan Chen, Xia Zhong, Liyun Zhang, Bingsen Zhang
Summary: This study investigates the effect of support morphology on the catalytic performance of selective hydrogenation reactions. The results show that the properties of metal nanoparticles can be modified by the nature of the support, leading to improved catalytic activity and stability.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Xiaoyuechuan Ma, Shishuai Shi, Qixiang Xu, Li Xu, Guoji Liu
Summary: 2-Methylnaphthalene (2-MN), an important intermediate of organic chemical industry, has application value in the fields of medicine and material research. This study successfully achieved efficient conversion of 2-MN to 6-methyl-1,2,3,4-tetrahydronaphthalene (6-MT) through hydrogenation using Ni-based catalysts prepared at different reduction temperatures. The results showed that the symbiotic effect of heterostructured Ni-NiO over gamma-Al2O3 played a key role in achieving the desired catalytic performance.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Physical
Mohamed Sadou, Adel Saadi, Mohammed Hadj Meliani, Rami K. Suleiman, Tawfik A. Saleh
Summary: A facile synthetic method was used to prepare copper-modified SBA-15 catalysts. The catalysts showed high activity, which could be attributed to the well-dispersed copper nanoparticles on the mesoporous support.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Applied
Joanna Wojciechowska, Elisa Gitzhofer, Jacek Grams, Agnieszka M. Ruppert, Nicolas Keller
Article
Chemistry, Multidisciplinary
Joanna Wojciechowska, Marcin Jedrzejczyk, Jacek Grams, Nicolas Keller, Agnieszka M. Ruppert
Article
Chemistry, Physical
Karolina A. Chalupka, Jacek Grams, Pawel Mierczynski, Malgorzata Szynkowska, Jacek Rynkowski, Thomas Onfroy, Sandra Casale, Stanislaw Dzwigaj
Article
Energy & Fuels
Robert Ryczkowski, Karolina Chalupka, Witold Kwapinski, Kamila Przybysz, Dagmar Fridrichova, Jacek Grams
Article
Energy & Fuels
P. Lestinsky, Z. Zikmund, B. Grycova, R. Ryczkowski, J. Grams, A. Inayat
Review
Chemistry, Analytical
Jacek Grams
REVIEWS IN ANALYTICAL CHEMISTRY
(2020)
Article
Energy & Fuels
Jacek Grams, Robert Ryczkowski, Renata Sadek, Karolina Chalupka, Kamila Przybysz, Sandra Casale, Stanislaw Dzwigaj
Article
Chemistry, Physical
Robert Ryczkowski, Joanna Goscianska, Rafal Panek, Wojciech Franus, Kamila Przybysz, Jacek Grams
Summary: This study aimed to design sustainable nickel catalysts supported on selected fly ash based zeolites for thermal processing of lignocellulosic feedstock towards hydrogen rich gas. Incorporation of nickel into the structure of zeolite A modified by lanthanum was found to be the most effective method for H2 production. The physicochemical properties of the catalyst played a key role in enhancing its activity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Biochemistry & Molecular Biology
Marcin Jedrzejczyk, Emilia Soszka, Joanna Goscianska, Marcin Kozanecki, Jacek Grams, Agnieszka M. Ruppert
Article
Chemistry, Multidisciplinary
Katarzyna Swirk Da Costa, Jacek Grams, Monika Motak, Patrick Da Costa, Teresa Grzybek
JOURNAL OF CO2 UTILIZATION
(2020)
Article
Chemistry, Physical
Katarzyna Nawrotek, Jacek Grams
Summary: The study focused on the impact of solution components, time, voltage, and properties of different chitosan on the mass and structural properties of the electrodeposited tubular structures. Various analytical techniques were employed to obtain fundamental information about the bonds and interactions in the structures, aiming at the possibility of obtaining desired tubular implants with anticipated structural properties for tissue and organ regeneration applications.
Review
Chemistry, Physical
Jacek Grams, Agnieszka M. Ruppert
Summary: Pyrolysis of lignocellulosic biomass for alternative fuel production requires catalysts to improve bio-oil quality, but catalyst deactivation and instability remain major challenges, hindering efficiency. Therefore, addressing catalyst stability is crucial for enhancing the pyrolysis process.
Article
Chemistry, Multidisciplinary
Anna Trubetskaya, Thomas M. Attard, Vitaliy L. Budarin, Andrew J. Hunt, Mehrdad Arshadi, Jacek Grams
Summary: Supercritical extraction of biomass has a significant impact on the composition of Scots pine tree fractions, altering the surface concentration of water, lipids, and metals which subsequently influences the pyrolysis composition. The study demonstrates the remarkable influence of surface adsorbed metals on the pyrolysis products' composition, providing insights for a sustainable pretreatment method using ScCO2.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Analytical
Jacek Grams
Summary: The analysis of surface properties of thermally treated lignocellulosic biomass is crucial for controlling the formation process and developing materials with unique properties. This study discussed the most useful methods, including microscopic techniques, nitrogen adsorption/desorption, infrared spectroscopy, X-ray photoelectron spectroscopy, and time-of-flight secondary ion mass spectrometry, for analyzing the surface of biochars.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Green & Sustainable Science & Technology
Anna Trubetskaya, Jacek Grams, James J. Leahy, Robert Johnson, Paul Gallagher, Rory F. D. Monaghan, Marzena Kwapinska
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)
