Article
Multidisciplinary Sciences
Jiahua Zhou, Piaoping Yang, Pavel A. Kots, Maximilian Cohen, Ying Chen, Caitlin M. Quinn, Matheus Dorneles de Mello, J. Anibal Boscoboinik, Wendy J. Shaw, Stavros Caratzoulas, Weiqing Zheng, Dionisios G. Vlachos
Summary: Investigated the role of oxygen-containing functional groups in carbon materials and found that phenolic groups are the main acid sites in gas-phase reactions, while carboxylic groups are less acidic. Developed a methodology to identify acid sites in oxygenated carbon materials using comprehensive surface characterizations and calculations.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Bingqing Yao, Shun-Kuang Lua, Hui-Shi Lim, Qi Zhang, Xiaoya Cui, Timothy J. White, Valeska P. Ting, ZhiLi Dong
Summary: This study introduces a novel method to predictably synthesize MOF nanoparticles with desired sizes and morphologies through ultrasound-assisted synthesis. Cobalt-doped ZIF-8 with tunable particle sizes and improved nitrogen adsorption-desorption characteristics is achieved, showing enhanced catalytic performance compared to pure ZIF-8 and superior stability compared to monometallic ZIF-67.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Sam Van Minnebruggen, Trees De Baerdemaeker, Ka Yan Cheung, Andrei-Nicolae Parvulescu, Ulrich Mueller, Patrick Tomkins, Rodrigo De Oliveira-Silva, Xiangju Meng, Feng-Shou Xiao, Toshiyuki Yokoi, Weiping Zhang, Dimitrios Sakellariou, Dirk De Vos
Summary: This study investigates the use of OSDA-free Beta zeolites as an alternative catalyst for the acid-catalyzed alkylation of isobutane with butenes. The OSDA-free Beta zeolites show excellent catalytic performance and stability, outperforming OSDA-based zeolites and the industrial benchmark La-HY.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Dmitry S. Zasukhin, Ivan A. Kasyanov, Yury G. Kolyagin, Anna I. Bulygina, Karl C. Kharas, Irina I. Ivanova
Summary: P-31 MAS NMR spectroscopy has made significant progress in the study of alkyl-substituted phosphine oxides adsorption, providing a quantitative measurement of zeolite acidity. The use of different probe molecules allows for the distinction between active sites in different locations.
Article
Chemistry, Applied
Haimei Xu, Peng Lu, Guangying Fu, Jifa Miao, Jiaqi Zhao, Ruiqin Ding, Lei Zhao, Zhirong Lang, Xiaobo Yang, Valentin Valtchev
Summary: The zeolite community successfully synthesized high-silica LTA-type zeolites after 50 years of research, and found strong interactions between organic structure-directing agents and the framework. Removing the structure-directing agents is difficult and can only be done at high temperatures.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Physical
Pengcheng Xu, Xinyu Li, Yufan Zhou, Ying Chen, Xuefeng Wang, Hao Jia, Ming Li, Haitao Yu, Xinxin Li
Summary: Temperature-programmed desorption (TPD) is a crucial technique for studying the properties of advanced catalysts. However, current TPD instruments are bulky and use ex situ detectors. In this study, we propose an in situ TPD technique using a silicon microcantilever with integrated functional elements for mass measuring and sample heating. With this method, the desorption-induced mass change can be measured in real-time during programmed heating, eliminating the need for ex situ detectors. This proposed in situ TPD method shows promising potential for future TPD applications.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Ling Cheng, Ying Yu, Ruting Huang, Xianyang Shi
Summary: In this study, a recyclable lollipop-shaped Co9S8/CdS nanocomposite was synthesized by direct annealing of ZIF-67 and CdS, resulting in a high photocatalytic H-2 production rate under visible-light illumination. The close contact of Co9S8 and CdS promotes electron transfer and enhances the number of active sites, leading to improved efficiency compared to pure ZIF-67 and Co9S8. This research provides a new method to enhance the photocatalytic performance of pure ZIF-67 in H-2 production technology.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Wenxing Lv, Ziwei Han, Shaokun Dong, Yanjuan Huang, Jinqi Deng, Chao Liu, Qiang Feng, Jiashu Sun
Summary: An all-aqueous microfluidic reactor was used to synthesize protein-loaded ZIF-8 nanoparticles in a one-step, rapid, and highly controlled manner at room temperature. The ZIF-8 nanoparticles with protein encapsulation efficiency over 97% were achieved by pre-mixing proteins with 2-MIM. The 25 nm ZIF-8 nanoparticles showed the best performance in promoting cellular uptake of protein payload and enhancing cytosolic protein delivery.
Article
Materials Science, Multidisciplinary
Young Jin Kim, Min-Zy Kim, Syed Fakhar Alam, Aafaq ur Rehman, Arepalli Devipriyanka, Pankaj Sharma, Hye Ryeon Lee, Churl-Hee Cho
Summary: ZIF-8 nanoparticles were synthesized in various solvents at 25°C, showing that the solvating solvent strongly affected particle morphology. Different alcohols led to agglomerates, while water and methanol produced isolated particles. The size of ZIF-8 agglomerates decreased with increasing dielectric constant of the solvent.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Energy & Fuels
Jie Li, Yan Zhang, Wenpo Shan, Hong He
Summary: A series of mesoporous Pd/Al2O3 and Pd/MgAl2O4 catalysts with different palladium contents (0.5, 1 and 4 wt%) were prepared and used for methane combustion. The 1Pd/MgAl2O4 (1 wt% Pd) catalyst showed highly efficient catalysis for methane combustion below 450 degrees C, with a low apparent activation energy of around 50.1 kJ/mol and good thermal stability. The superior catalytic performance of Pd/MgAl2O4 can be attributed to the strong interaction between the MgAl2O4 spinel and PdO species, which promotes species dispersion and stability. In addition, the catalytic activity of Pd/MgAl2O4 showed a volcano-shaped dependence on the size of Pd particles, indicating the importance of strong metal-support interaction.
Article
Chemistry, Physical
Rongrong Zhao, Shikun Li, Lixin Bi, Qiang Fu, Hongzi Tan, Ming Wang, Hongyou Cui
Summary: A renewable synthesis of p-xylene (PX) using biomass-derived 2,5-dimethylfuran (2,5-DMF) and ethanol was achieved through the Diels-Alder cycloaddition reaction. Catalyst selection and modification greatly influenced the product distribution and reaction performance.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
William S. Salvia, Tommy Yunpu Zhao, Puranjan Chatterjee, Wenyu Huang, Frederic A. Perras
Summary: The study confirmed that the active sites in amorphous silica-alumina are zeolitic bridging Bronsted sites, using selective isotope labeling and quantitative NMR distance measurements.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Marcelo M. Pereira, Fabiana M. Santos, Alessandra Silva, Nuno Batalha, Fabio Junior Ferreira da Silva Henrique, Pierre M. Esteves, Benoit Louis
Summary: This study aims to understand the influence of extraframework aluminum (EFAL) in the activation mechanism of isobutane over acidic zeolites, showing that the sC-H bond in isobutane selectively undergoes a protolytic reaction at low temperature solely in the presence of EFAL acid sites. These results shed light on the mechanism of small alkane activation over acidic zeolites.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Yongyong Shi, Donghai Jiang, Jingyun Zhao, Lang Wu, Chenchen Zhao, Jun Ma, Hongyan Pan, Qian Lin
Summary: Pd-Multi@HCS catalysts with Pd nanoparticles partially embedded in the inner wall of hollow carbon spheres were synthesized by a hard template method. The influence of the pore structure of the hollow carbon shell on the catalytic performance for the direct synthesis of H2O2 from H-2 and O-2 was systematically researched. The results showed that the special hollow structure with a large number of micropores ensured the maximum exposure of Pd active sites and improved the catalytic activity and stability of the Pd-Multi@HCS catalysts.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Vijaykumar S. Marakatti, Eric M. Gaigneaux
Summary: The catalytic performance of different zeolites in resorcinol alkylation is influenced by pore characteristics, while passivation of external surfaces can produce shape-selective products. 4-TBR formation occurs through external acid sites via RMTBE isomerization, while 4-TBR formation inside pores happens through direct C-alkylation mechanism.
CATALYSIS COMMUNICATIONS
(2021)
Review
Chemistry, Physical
Paivi Maki-Arvela, Irina L. Simakova, Dmitry Yu. Murzin
Summary: This review summarizes recent studies on the synthesis of secondary amines by one-pot amination of aldehydes and ketones over heterogeneous catalysts. Amines are key intermediates in the chemical industry and are widely used for the synthesis of various commodities. The review discusses the direct catalytic reductive amination of carbonyl compounds, the synthesis of secondary amines from carbonyl compounds and in situ generated amines, and the application of alternative hydrogen sources. It also addresses the scope of the amination reaction, the effect of solvent, reaction conditions, and catalyst properties, as well as catalyst regeneration and reuse, kinetic regularities, and kinetic modeling.
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Physical
Zuzana Vajglova, Irina L. Simakova, Kari Eranen, Paivi Maki-Arvela, Narendra Kumar, Markus Peurla, Stiina Tolvanen, Alexander Efimov, Leena Hupa, Jouko Peltonen, Dmitry Yu Murzin
Summary: The study investigated four clay materials in a catalytic reaction, with attapulgite showing the best results in terms of yield and stereoselectivity. Attapulgite had superior properties compared to other clay materials, exhibiting high meso-to-micropore volume ratio, basicity, and mechanical strength.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Applied
Somayeh Taghavi, Elena Ghedini, Federica Menegazzo, Paivi Maki-Arvela, Markus Peurla, Mojgan Zendehdel, Giuseppe Cruciani, Alessandro Di Michele, Dmitry Yu. Murzin, Michela Signoretto
Summary: This study focused on the formulation and performance of silica-aluminosilicate-based composites for catalytic conversion of sugars to levulinic acid. The acidity, surface area, and porosity of the catalysts were tailored. The best catalyst had high surface area and porosity, which facilitated mass transfer and improved performance in cellulose hydrolysis. The tuned concentration and type of CuZSM-5 acidity in the composite promoted levulinic acid formation and suppressed humins formation.
Article
Engineering, Environmental
Zuzana Vajglova, Marisa Navas, Paivi Maki-Arvela, Kari Eranen, Narendra Kumar, Markus Peurla, Dmitry Yu. Murzin
Summary: One-pot transformations of citral were investigated over Ru-catalysts in both batch and continuous modes. The study found that the Z/E-citral ratio decreased with increasing Ru particle size, and the Ru/H-Y-80 extrudates exhibited comparable catalytic behavior.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Basile Lasne, Paivi Maki-Arvela, Atte Aho, Zuzana Vajglova, Kari Eranen, Narendra Kumar, Julian E. Sanchez-Velandia, Markus Peurla, Cecilia Mondelli, Javier Perez-Ramirez, Dmitry Yu Murzin
Summary: In this study, various heterogeneous micro- and mesoporous, acidic catalysts were examined for the selective synthesis of Florol (R). The results showed that a mildly acidic, microporous H-Beta-300 catalyst with a SiO2/Al2O3 ratio of 300 performed the best, achieving 72% selectivity and 99% conversion at 40 degrees C with a molar ratio of isoprenol to isovaleraldehyde of 1:5. More acidic zeolite catalysts exhibited slightly lower selectivity, while mesoporous catalysts with mild acidity and no strong Bronsted acid sites had the lowest selectivity.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Applied
Irina L. Simakova, Zuzana Vajglova, Paivi Maki-Arvela, Kari Eranen, Leena Hupa, Markus Peurla, Ermei M. Makila, Johan Warna, Dmitry Yu Murzin
Summary: A one-pot continuous synthesis of menthols from citral was achieved with high selectivity under specific conditions. Catalyst deactivation over time resulted in a decrease in the selectivity to menthols and an increase in the selectivity to isopulegols. A kinetic model was developed to describe the reaction, taking into account both metal and acid site deactivation, and showed good agreement with the experimental data.
ORGANIC PROCESS RESEARCH & DEVELOPMENT
(2022)
Article
Chemistry, Physical
Somayeh Taghavi, Paivi Maki-Arvela, Zuzana Vajglova, Markus Peurla, Ilari Angervo, Kari Eranen, Elena Ghedini, Federica Menegazzo, Mojgan Zendehdel, Michela Signoretto, Dmitry Yu Murzin
Summary: Citronellal was converted to menthol using a Ni catalyst supported on H-Beta zeolite. The acidity and Ni loading of the catalyst significantly influenced the catalytic performance. The best results were obtained with a Ni loading of 15 wt.% on H-Beta-25, giving a yield of 36% menthols and 77% stereoselectivity. The catalyst could be successfully regenerated and reused with similar activity and selectivity.
Review
Chemistry, Physical
Paivi Maki-Arvela, Irina Simakova, Zuzana Vajglova, Dmitry Yu Murzin
Summary: This study summarized the one-pot synthesis of menthol from citronellal or citral, which can be conducted in both batch and continuous reactors. The reaction requires a bifunctional catalyst with Lewis acid sites for cyclisation of citronellal and metal particles for its hydrogenation. Different catalyst properties and reaction conditions can affect the yield and selectivity of the desired L-menthol. The study also investigated the performance of the catalyst in a trickle bed reactor and discussed the effect of metal location and synthesis method on catalyst performance.
CATALYSIS SURVEYS FROM ASIA
(2023)
Article
Chemistry, Applied
Atte Aho, Narendra Kumar, Kari Eranen, Robert Lassfolk, Paivi Maki-Arvela, Tapio Salmi, Markus Peurla, Ilari Angervo, Jukka Hietala, Dmitry Yu. Murzin
Summary: Sn-Al-Beta zeolite was prepared and modified with alkali and alkaline earth metals, which did not significantly change the properties of the catalyst. The catalysts were tested in the conversion of glucose to methyl lactate, and the results showed that suppressing Bronsted acidity can greatly increase the yield of methyl lactate.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Physical
Zuzana Vajglova, Bibesh Gauli, Paeivi Maeki-Arvela, Irina L. Simakova, Narendra Kumar, Kari Eraenen, Teija Tirri, Robert Lassfolk, Markus Peurla, Dmitry E. Doronkin, Dmitry Yu. Murzin
Summary: In this study, co-processing of n-hexadecane with lignin derived isoeugenol was investigated using low-cost mono- and bimetallic iron and nickel supported on H-Y-5.1 zeolite. Different Fe-Ni metal ratios in the catalyst led to different reaction rates and product distribution. Catalysts with smaller metal particle sizes were more efficient, and 2 wt% Fe - 8 wt% Ni/H-Y-5.1 catalysts exhibited extremely high activity in co-processing.
JOURNAL OF CATALYSIS
(2023)
Article
Nanoscience & Nanotechnology
Zuzana Vajglova, Bibesh Gauli, Paivi Maki-Arvela, Narendra Kumar, Kari Eranen, Johan Warna, Robert Lassfolk, Irina L. Simakova, Igor P. Prosvirin, Markus Peurla, Johan Kaarle Mikael Linden, Hannu Huhtinen, Petriina Paturi, Dmitry E. Doronkin, Dmitry Yu. Murzin
Summary: A set of low-cost monometallic Fe, Ni, and bimetallicFe-Ni bifunctional H-Y-5.1 catalysts with different metal ratios were synthesized and characterized. The introduction of Fe led to a decrease in strong acid sites and an increase in medium Bronsted acid sites, while the introduction of Ni increased the number of Lewis acid sites. The particle size of iron was approximately 5 nm, while it was about fourfold higher for nickel. XPS demonstrated higher iron content on the catalyst surface compared to nickel. The results also showed strong Fe-Ni nanoparticle interactions, which affected the catalytic performance.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Chemical
Johan Michelson, Paivi Maki-Arvela, Pasi Rajala, Markus Hallapuro, Daniel Schmid, Oskar Karlstrom, Johan Warna, Dmitry Yu Murzin
Summary: Experiments on CO2 capture using alkaline solutions showed that higher NaOH content and CO2 concentrations resulted in higher removal efficiency. A mathematical model accurately predicted CO2 uptake at high OH- concentrations, but had lower accuracy for CO2 uptake at lower OH- concentrations.
CHEMICAL ENGINEERING COMMUNICATIONS
(2023)
Article
Engineering, Chemical
Alua M. M. Manabayeva, Paivi Maki-Arvela, Zuzana Vajglova, Mark Martinez-Klimov, Teija Tirri, Tolkyn S. S. Baizhumanova, Valentina P. P. Grigor'eva, Manapkhan Zhumabek, Yermek A. A. Aubakirov, Irina L. L. Simakova, Dmitry Yu. Murzin, Svetlana A. A. Tungatarova
Summary: In this study, the performance of monometallic Ni and bimetallic Ni-Fe catalysts, synthesized by solution combustion synthesis (SCS), in dry reforming of methane (DRM) was investigated. The bimetallic 15Ni-5Fe-30Al catalyst with NiAl2O4 spinel and metallic Ni phases exhibited the highest hydrogen yield of 81%, along with high conversion rates of CH4 and CO2.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Alua Manabayeva, Pa''ivi Maki-Arvela, Zuzana Vajglova, Mark Martinez-Klimov, Olha Yevdokimova, Anssi Peuronen, Mika Lastusaari, Teija Tirri, Kaisar Kassymkan, Tolkyn S. Baizhumanova, Manapkhan Zhumabek, Rabiga O. Sarsenova, Zauresh T. Zheksenbaeva, Gulnar N. Kaumenova, Vincenzo Russo, Dmitry Yu. Murzin, Svetlana A. Tungatarova
Summary: This study investigated the dry reforming of methane using Ni-M oxide catalysts prepared by solution combustion synthesis. The results showed that catalysts prepared by this method exhibited better catalytic activity and stability compared to those prepared by impregnation.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Mark E. Martinez-Klimov, Olha Yevdokimova, Paivi Maki-Arvela, Jennifer Cueto, Nataliya Shcherban, Zuzana Vajglova, Kari Eranen, Dmitry Yu. Murzin
Summary: A series of extrudates composed of platinum, zeolite H-Beta-25 and Bindzil as a binder were evaluated for the hydrodeoxygenation of isoeugenol. The results showed that platinum distributed on both zeolite and binder exhibited higher conversion and yield. At 150 degree celsius, high activity and yield were achieved.
SUSTAINABLE ENERGY & FUELS
(2023)