Review
Chemistry, Physical
Meijia Li, Zhuxing Sun, Yun Hang Hu
Summary: This article presents the current development of CO2 or dry reforming of methane (CRM/DRM) technology, focusing on the progress in the development of efficient and robust catalysts, as well as future research directions and challenges.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Materials Science, Ceramics
Toshihiko Osaki
Summary: Nickel-alumina cryogel and xerogel catalysts showed similar catalytic activity in CO2 reforming of CH4, but carbon formation was more effectively suppressed on the cryogel. Freeze drying improved the structural and textural properties of alumina gel, resulting in finer nickel particles dispersed throughout the gel.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Spectroscopy
Aleksandr S. Tanichev, Dmitry Petrov
Summary: This study investigates the mutual influence of CH4-N2, CH4-CO2, and CH4-C2H6 on their characteristic Raman bands. The half-width and asymmetry of the Q branches of N2, CO2, and C2H6 as a function of methane concentration were measured. Results obtained from a high-sensitivity spectrometer with a resolution of 0.5 cm^-1 based on spontaneous Raman scattering provided reliable data. An algorithm and the necessary parameters for simulating the effect of various molecular environments on the Raman bands of the main components of natural gas are presented.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Environmental Sciences
Yang Zhou, Ruizhi Chu, Lulu Fan, Jianqiao Zhao, Weisong Li, Xiaofeng Jiang, Xianliang Meng, Yusai Li, Shi Yu, Yongzhou Wan
Summary: Thermal plasma activation of CH4-CO2 reforming is an efficient and clean technology for utilizing hydrocarbon resources and reducing greenhouse gases. This study investigates the equilibrium state and transformation mechanism of the reaction using experimental, thermodynamic, and kinetic analyses. The results show that the CO2 conversion rate and H2 selectivity decrease with increasing CO2/CH4 ratio, while the CH4 conversion rate and CO selectivity show the opposite trend. Excess CO2 promotes the partial oxidation of CH4, eliminating carbon deposition and achieving higher gas conversion without carbon deposition.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Energy & Fuels
Phakamile Ndlovu, Saeideh Babaee, Paramespri Naidoo
Summary: This article reviews the encapsulation process of carbon dioxide by replacing methane from natural gas hydrates, presenting and discussing methane-carbon dioxide replacement models. The variables affecting the replacement process and reported theoretical findings are reviewed, along with the challenges and limitations. The fundamentals of hydrate formation mechanisms on porous media are also detailed, and a comprehensive discussion and comparison of experimental studies involving different porous media materials and various additives are presented.
Article
Engineering, Environmental
Yu Fu, Wenbo Kong, Bingrong Pan, Changkun Yuan, Shuqing Li, He Zhu, Jun Zhang
Summary: The study demonstrates that thermal oxidative aging and reduction strategy can reverse the sintering of Rh/TiO2 catalyst and significantly affect the catalytic performance towards methane dry reforming. The oxidative aging process impacts the mobilization of Rh species across TiO2, while reduction temperature influences oxymetal activation and electronic structure of Rh NPs, associated with carbon formation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Chemistry, Multidisciplinary
M. Alhassan, A. A. Jalil, M. B. Bahari, A. H. K. Owgi, W. Nabgan, N. S. Hassan, T. V. Tran, A. A. Abdulrasheed, M. Y. S. Hamid, M. Ikram, M. L. Firmansyah, H. Holilah, N. A. Sholejah
Summary: Environmental pollution, climate change, and fossil fuel extinction have driven global interest in finding alternative energy sources. Dry reforming of methane (DRM) is a promising technique for syngas production. This article discusses the challenges of coking and explores various factors that influence the performance of nickel catalysts in the process.
Article
Engineering, Chemical
Chunlai Dong, Fukuan Jiang, Lei Yang, Canglong Wang, Kui Xie
Summary: In this study, high-efficiency electrochemical reforming of CO2 and CH4 into syngas was achieved by constructing metal-oxide interfaces in solid oxide electrolysis cells (SOECs). The exsolved metal-oxide interfaces demonstrated improved activity and stability, enabling the conversion of CO2 and CH4 to syngas for more than 70 hours and 7 redox cycles.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Yan Xie, Yu-Jie Zhu, Tao Zheng, Qing Yuan, Chang-Yu Sun, Lan-Ying Yang, Guang-Jin Chen
Summary: Utilizing multi-defective ice to construct porous CO2 hydrate can improve the efficiency of CH4-CO2 hydrate replacement, providing a new method for CH4 recovery and CO2 sequestration. Experimental results showed that the replacement efficiency at 272.15 K was significantly higher than at 268.15 K, confirming the feasibility of the replacement concept.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Liang Yu, Mojtaba Sinaei Nobandegani, Jonas Hedlund
Summary: The study evaluated single channel tubular zeolite CHA membranes with excellent permeability and selectivity for industrially relevant gas mixtures. The membranes showed low SF6 permeance and high CO2 permeance, exhibiting potential for industrial separation of CO2 from gas mixtures.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Environmental
Lingjie Sun, Tian Wang, Bo Dong, Man Li, Lei Yang, Hongsheng Dong, Lunxiang Zhang, Jiafei Zhao, Yongchen Song
Summary: A method utilizing pressure oscillation during CH4/CO2 replacement is proposed in this study, which effectively promotes the replacement process by breaking the balance of the hydrate layer and forming a CO2/CH4 mixed hydrate layer. This newly proposed method significantly enhances the recovery of CH4 and the efficiency of CO2 sequestration.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Jyoti Shanker Pandey, Charilaos Karantonidis, Qian Ouyang, Nicolas von Solms
Summary: CH4/CO2 mixed hydrates can be dissociated effectively using the multistep cyclic depressurization method, leading to improved CH4 recovery below the stability pressure of CH4 hydrate. The study also highlights the impact of chemicals in the aqueous phase and reservoir temperature on recovery and storage yield. Additionally, the morphology study demonstrates the expansion of hydrate volume during cyclic depressurization, confirming hydrate reformation from released water from dissociation.
Article
Chemistry, Multidisciplinary
Danhua Mei, Peng Zhang, Gehui Duan, Shiyun Liu, Ying Zhou, Zhi Fang, Xin Tu
Summary: The reforming of CH4 with CO2 using nanosecond pulsed dielectric barrier discharge (DBD) plasma shows promising results in enhancing gas conversion, but at the expense of energy efficiency. Increasing applied voltage and discharge length can enhance gas conversion, but decrease energy efficiency.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Multidisciplinary
Silvera Scaccia, Livia Della Seta, Daniele Mirabile Gattia, Giuseppina Vanga
Summary: A novel Ni/CaO-Ca12Al14O33 catalyst was prepared by Ni wet impregnation on a mixed calcium-aluminum-oxide (CAO) support, which exhibited good stability and low carbon deposition during dry reforming of methane. In contrast to the reference catalyst Ni/gamma-Al2O3, the novel catalyst showed higher basicity and better performance in the reaction.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Engineering, Environmental
Mojtaba Sinaei Nobandegani, Liang Yu, Jonas Hedlund
Summary: Zeolite membrane processes showed significantly higher selectivity and permeance compared to polymeric membrane processes for biogas upgrading, resulting in lower cost and electricity consumption, as well as more compact design.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Alexander A. Khassin, Irina I. Simentsova, Alexander N. Shmakov, Natalia V. Shtertser, Olga A. Bulavchenko, Svetlana V. Cherepanova
APPLIED CATALYSIS A-GENERAL
(2016)
Article
Chemistry, Inorganic & Nuclear
A. S. Arakcheev, A. N. Shmakov, M. R. Sharafutdinov, B. P. Tolochko, V. A. Popov, A. A. Shoshin, A. A. Vasilyev, D. I. Skovorodin, S. V. Polosatkin, A. V. Burdakov, I. A. Bataev, V. A. Bataev
JOURNAL OF STRUCTURAL CHEMISTRY
(2016)
Article
Materials Science, Multidisciplinary
S. F. Tikhov, E. A. Mel'gunova, M. S. Mel'gunov, Yu. N. Bespalko, K. R. Valeev, A. N. Shmakov, V. A. Sadykov, V. E. Romanenkov, E. E. Petyushik, T. A. Evtukhova
INORGANIC MATERIALS
(2017)
Article
Chemistry, Physical
A. A. Saraev, Z. S. Vinokurov, V. V. Kaichev, A. N. Shmakov, V. I. Bukhtiyarov
CATALYSIS SCIENCE & TECHNOLOGY
(2017)
Article
Chemistry, Multidisciplinary
Alexander N. Shmakov, Svetlana V. Cherepanova, Dmitrii A. Zyuzin, Yulia E. Fedorova, Ivan A. Bobrikov, Anne-Cecile Roger, Andrzej Adamski, Vladislav A. Sadykov
Article
Chemistry, Applied
Larisa A. Arkatova, Nikolai G. Kasatsky, Yury M. Maximov, Oleg V. Pakhnutov, Alexander N. Shmakov
Article
Chemistry, Inorganic & Nuclear
Claudio Evangelisti, Matteo Guidotti, Cristina Tiozzo, Rinaldo Psaro, Nataliya Maksimchuk, Irina Ivanchikova, Alexandr N. Shmakov, Oxana Kholdeeva
INORGANICA CHIMICA ACTA
(2018)
Article
Chemistry, Physical
Vladislav A. Sadykov, Elena Yu Pikalova, Alexander A. Kolchugin, Andrey Fetisov, Ekaterina M. Sadovskaya, Elena A. Filonova, Nikita F. Eremeev, Vladimir B. Goncharov, Alexey Krasnov, Pavel Skriabin, Alexander N. Shmakov, Zakhar S. Vinokurov, Arcady Ishchenko, Sergey M. Pikalov
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Physical
V. A. Sadykov, E. Yu. Pikalova, Z. S. Vinokurov, A. N. Shmakov, N. F. Eremeev, E. M. Sadovskaya, J. G. Lyagaeva, D. A. Medvedev, V. D. Belyaev
SOLID STATE IONICS
(2019)
Article
Chemistry, Physical
Nataliya V. Maksimchuk, Ji Sun Lee, Marina V. Solovyeva, Kyung Ho Cho, Aleksandr N. Shmakov, Yuriy A. Chesalov, Jong-San Chang, Oxana A. Kholdeeva
Article
Physics, Multidisciplinary
O. Semenova, D. S. Abramkin, I. A. Derebezov, A. N. Shmakov, A. Gaisler, V. A. Gaisler
OPTOELECTRONICS INSTRUMENTATION AND DATA PROCESSING
(2019)
Article
Chemistry, Physical
A. A. Saraev, Z. S. Vinokurov, A. N. Shmakov, V. V. Kaichev, V. I. Bukhtiyarov
KINETICS AND CATALYSIS
(2018)
Proceedings Paper
Materials Science, Multidisciplinary
Anastasiya Nazarova, Nina Radishevskaya, Nikolay Kasatsky, Natalia Karakchieva
III INTERNATIONAL SYMPOSIUM FUNDAMENTAL ASPECTS OF RARE-EARTH ELEMENTS EXPLORATION, MINING AND SEPARATION AND MODERN MATERIALS ENGINEERING (REE-2016)
(2017)
Article
Materials Science, Ceramics
V. A. Sadykov, N. F. Eremeev, Z. S. Vinokurov, A. N. Shmakov, V. V. Kriventsov, A. I. Lukashevich, A. V. Krasnov, A. V. Ishchenko
JOURNAL OF CERAMIC SCIENCE AND TECHNOLOGY
(2017)
Article
Chemistry, Applied
Vladimir V. Chesnokov, Olga Yu. Podyacheva, Alexander N. Shmakov, Lidiya S. Kibis, Andrei I. Boronin, Zinfer R. Ismagilov
CHINESE JOURNAL OF CATALYSIS
(2016)
Article
Chemistry, Applied
Qingyuan Zheng, Jack H. Williams, Scott Elgersma, Mick D. Mantle, Andrew J. Sederman, G. Leendert Bezemer, Constant M. Guedon, Lynn F. Gladden
Summary: In this study, a pilot-scale fixed-bed reactor compatible with NMR/MRI was developed for Fischer-Tropsch synthesis. Multiple magnetic resonance techniques were applied to quantitatively characterize different product species within catalyst pellets, providing valuable information for catalyst and reactor optimization.
Article
Chemistry, Applied
Lisa Ramisch, Sebastian Pfaff, Sabrina M. Gericke, Edvin Lundgren, Johan Zetterberg
Summary: We present a combination of optical operando techniques that allow simultaneous measurement of adsorbed species on catalyst surfaces, monitoring of surface oxide formation, and imaging of the gas phase above the catalyst surface. The experimental setup was validated by studying CO oxidation on Pd(100) at different pressures, revealing the effects of pressure on the heterogeneous catalytic reaction.
Article
Chemistry, Applied
Marta Paniagua, Gabriel Morales, Juan A. Melero, Daniel Garcia-Salgado
Summary: The influence of common impurities in levulinic acid on the catalytic performance of different acid catalysts for bio-jet fuel production was studied. It was found that furfural had the greatest detrimental effect on catalyst performance, while propyl-sulfonic acid-modified SBA-15 and sulfonic acid resin Amberlyst-70 showed good regeneration ability.
Article
Chemistry, Applied
Jesus Tapiador, Pedro Leo, Guillermo Calleja, Gisela Orcajo
Summary: This study presents a new MOF material, Zn-URJC-13, with acid and basic sites, permanent porosity, and high affinity to CO2 molecules. The Zn-URJC-13 catalyst exhibits efficient performance in CO2 cycloaddition reactions and can be reused multiple times.
Article
Chemistry, Applied
Dan Zhao, Vita A. Kondratenko, Dmitry E. Doronkin, Shanlei Han, Jan-Dierk Grunwaldt, Uwe Rodemerck, David Linke, Evgenii V. Kondratenko
Summary: This study demonstrates the potential of cheap and commercially available Zr or Ti-based supports and ZnO to serve as active and selective catalysts for propane dehydrogenation (PDH). The catalytically active species formed in situ under PDH conditions consist of isolated ZnOx. ZnOx on the surface of LaZrOx shows the highest rate of propene formation.
Article
Chemistry, Applied
Hanbyeol Kim, Jung Rae Kim, Young-Kwon Park, Jeong-Myeong Ha, Jungho Jae
Summary: In this study, metal phosphates were used as catalysts for biomass conversion to produce sustainable aromatics through DielsAlder cycloaddition reactions. The effects of synthesis method, activation method, and P/Ti molar ratio on the structure and acid properties of titanium phosphate catalysts were systematically studied. The mesoporous titanium phosphate catalyst synthesized by hydrothermal method at 180℃ for 12 h followed by ethanol refluxing at 60℃ for 24 h at a molar P/Ti ratio of 1 showed the highest surface area and acid site density.
Article
Chemistry, Applied
Yasin Khani, Sumin Pyo, Kwang-Eun Jeong, Chul-Ung Kim, Moonis Ali Khan, Byong-Hun Jeon, Kun-Yi Andrew Lin, Siyoung Q. Choi, Young-Kwon Park
Summary: A protonated form of Zeolite Socony Mobil-5 (H-ZSM-5) catalyst was synthesized through a hydrothermal method using different sources of silica. The effect of loading the catalyst with yttrium, samarium, and gadolinium on the acidic properties was investigated. Among the metal-loaded catalysts, the Sm/LHZ catalyst showed the best performance in the methanol to propylene conversion due to its high amount of weak and intermediate acid sites, while the Gd-LHZ catalyst increased the selectivity towards ethane and propane.
Article
Chemistry, Applied
Michael Franc, Ivana Cisarova, Jan Vesely
Summary: The present study investigates an enantioselective cyclization of enals with imidazolone derivatives catalyzed by a combination of achiral Pd(0) complex and chiral secondary amine. Corresponding spirocyclic imidazolones were produced in high yields with moderate diastereoselectivity and excellent enantioselectivity. The developed co-operative catalytic methodology provides a highly substituted spirocyclic scaffold with four stereogenic centers under mild conditions.
Article
Chemistry, Applied
Mauro Alvarez, Jennifer Cueto, David P. Serrano, Pablo Marin, Salvador Ordonez
Summary: This study focuses on improving the formulation and preparation methods of catalysts for the production of dimethyl carbonate. By using suitable catalyst preparation methods and copper salt precursors, the researchers successfully produced catalysts with optimal performance for dimethyl carbonate formation.
Article
Chemistry, Applied
Claudia J. Keijzer, Luc C. J. Smulders, Dennie Wezendonk, Jan Willem de Rijk, Petra E. de Jongh
Summary: This study investigates the catalytic behavior of alpha-alumina supported silver catalysts in the presence of chloride. It is found that the particle size of silver can affect the selectivity of the catalyst, but different strategies lead to different results. In this size range, the selectivity of ethylene oxide is correlated to the Ag : Al2O3 surface ratio.
Article
Chemistry, Applied
Takeshi Aihara, Wataru Aoki, Michikazu Hara, Keigo Kamata
Summary: The development of acid-base bifunctional catalysts is important for promoting specific chemical transformations. In this study, Ti-based perovskite oxides were synthesized and used as catalysts for two C-C bond-forming reactions (cyanosilylation and Knoevenagel condensation). The highly pure SrTiO3 nanoparticles with a high specific surface area exhibited the highest catalytic performance, and could be easily recovered and reused.
Article
Chemistry, Applied
Olga Gorlova, Petra Pribylova, Eliska Vyskocilova, Katerina Peroutkova, Jan Kohout, Iva Paterova
Summary: This study investigates the Baeyer-Villiger oxidation of beta-cyclocitral using tin-modified mixed oxides as catalysts. The optimal reaction conditions and the effects of various factors on the reaction course and selectivity were determined. The results show that tin-modified mixed oxides exhibit high activity and selectivity in the oxidation reaction.
Article
Chemistry, Applied
M. I. Avila, M. M. Alonso-Doncel, L. Briones, G. Gomez-Pozuelo, J. M. Escola, D. P. Serrano, A. Peral, J. A. Botas
Summary: The catalytic fast pyrolysis of lignin using ion-exchanged zeolite catalysts showed significant improvements in bio-oil quality and the production of aromatic hydrocarbons and oxygenated compounds.
Article
Chemistry, Applied
Enrico Catizzone, Giorgia Ferrarelli, Paolo Bruno, Girolamo Giordano, Massimo Migliori
Summary: The acid-catalysed alcohol conversion reaction is a promising route for de-fossilization strategies. Research on pure alcohol conversion and simultaneous dehydration of mixed alcohols have shown different product compositions, with the type and distribution of acid sites affecting the reaction mechanism.
Article
Chemistry, Applied
Alireza Ranjbari, Juho Kim, Jihee Yu, Jiyun Kim, Mireu Park, Nayoung Kim, Kristof Demeestere, Philippe M. Heynderickx
Summary: This study investigated a novel kinetic model for the adsorption and photocatalytic degradation of methyl orange using commercial ZnO and reduced ZnO photocatalysts. The results provided new insights into the interaction of catalysts with molecules of different charges and compared with a previous study on methylene blue. The presence of oxygen vacancies in ZnO and their effects on adsorption and photocatalytic degradation were analyzed, and the photocatalytic degradation rate of reduced ZnO was found to increase significantly.