Article
Chemistry, Physical
Daichi Takami, Junya Tsubakimoto, Wirya Sarwana, Akira Yamamoto, Hisao Yoshida
Summary: The design of optimized photothermal catalysts is essential for the efficient conversion of CO2 into syngas using solar energy. This study demonstrated that silica-supported nickel catalysts prepared via Ni phyllosilicate exhibited superior catalytic performance and resistance to sintering and carbon deposition under visible and near-infrared light. The loading of nickel had positive and negative effects on the surface temperature and light absorption capacity, which influenced the photothermal catalytic activity for methane dry reforming.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Bin Li, Xiaoqing Yuan, Lvyin Li, Baitao Li, Xiujun Wang, Keiichi Tomishige
Summary: In the dry reforming of methane reaction, the addition of lanthanide oxides significantly improves the carbon resistance of nickel-based catalysts, with NiLa/SiO2 and NiCe/SiO2 exhibiting better stability and catalytic activity. The presence of lanthanide oxides affects the size of Ni nanoparticles and the activation energy of methane and carbon dioxide dissociation, leading to enhanced carbon resistance and stability in NiLa/SiO2 and NiCe/SiO2 catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
Xinxin Dong, Jinji Xi, Bing Song, Mengjie Zhang, Baosheng Jin
Summary: In this study, waste granular silica gel was reused as a nickel-based catalyst support. The Ni/WGSG catalysts showed good performance in the dry reforming of methane (DRM) reaction, with the Ni/WGSG-2 catalyst exhibiting the highest activity. The catalysts also demonstrated good stability under different working conditions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Baitao Li, Lvyin Li, Keiichi Tomishige, Xiujun Wang
Summary: This study investigated the effects of nickel catalysts modified with lanthanum on the efficiency and stability of dry reforming of methane process. It was found that the appropriate addition of lanthanum could enhance the CO2 adsorption capacity of the catalyst, increase the ability to remove carbon, and thus mitigate catalyst deactivation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Hua-Ping Ren, Si-Yi Ding, Qiang Ma, Wen-Qi Song, Yu-Zhen Zhao, Jiao Liu, Ye-Ming He, Shao-Peng Tian
Summary: Ni-G/SiO2-P catalyst prepared by adding glycine showed better performance and increased stability in carbon-dioxide reforming of methane (CDR) due to its smaller particle size and narrower distribution.
Article
Energy & Fuels
Bin Li, Xiaoqing Yuan, Baitao Li, Xiujun Wang
Summary: The addition of CeO2 enhances the carbon resistance of nickel-based catalysts for dry reforming of methane, improving catalytic activity and reducing the activation energy of CH4 and CO2, leading to decreased carbon deposition and graphitization. CeO2 hinders the formation of Ni-phyllosilicate species, weakens the interaction between Ni and silica, and prevents nickel sintering, resulting in catalysts with strong anti-sintering ability and carbon resistance.
Article
Chemistry, Physical
Pedro M. Araujo, Kevin M. da Costa, Fabio B. Passos
Summary: Nickel supported on perovskite supports showed high conversion and stability in the autothermal reforming of methane, especially Ni/CaTiO3 and Ni/BaTiO3. The alumina supported catalyst exhibited the highest initial conversion and selectivity, but deactivated over time.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Abdulaziz Bagabas, Ahmed Sadeq Al-Fatesh, Samsudeen Olajide Kasim, Rasheed Arasheed, Ahmed Aidid Ibrahim, Rawan Ashamari, Khalid Anojaidi, Anis Hamza Fakeeha, Jehad K. Abu-Dahrieh, Ahmed Elhag Abasaeed
Summary: A new nickel-based catalyst with MgO promoter showed efficient performance in the dry reforming of methane process, achieving high conversion rates and low carbon deposition. The study highlights the importance of catalyst composition in improving the DRM process efficiency and sustainability.
Article
Chemistry, Physical
Hua-Ping Ren, Shao-Peng Tian, Si-Yi Ding, Qiang Ma, Wen-Qi Song, Yu-Zhen Zhao, Zhe Zhang, Zongcheng Miao, Wei Wang
Summary: This study investigates the difference between the physical mixing method and the conventional impregnation method for preparing Ni-supported SBA-15 catalysts. The results show that the catalyst prepared by physical mixing has smaller Ni particle size, higher Ni dispersion, and stronger Ni-support interaction, exhibiting better anti-coking and anti-sintering performance.
Review
Energy & Fuels
Shuowen Guo, Yinghui Sun, Yanbin Zhang, Chenghu Zhang, Ying Li, Jie Bai
Summary: This article provides an overview of dry reforming of methane (DRM) reaction and its application in catalysts, with a focus on the development and limitations of NiCo bimetallic catalysts. The correlation between component properties and catalytic performances, the effect of preparation methods, and the reaction mechanisms of the catalysts are discussed. The deactivation issues caused by carbon deposition and bimetallic sintering are highlighted, and the role of promoters in overcoming these issues is emphasized.
Article
Chemistry, Applied
Pedro Nothaft Romano, Jose Faustino Souza de Carvalho Filho, Joao Monnerat Araujo Ribeiro de Almeida, Eduardo Falabella Sousa-Aguiar
Summary: A series of mono and bimetallic catalysts based on Ni, Rh, and Pd supported on different materials were evaluated for the dry reforming of methane reaction. Ni-based catalysts suffered from deactivation but could be regenerated, while Pd-based catalysts deactivated due to coke deposition. Rh-based catalysts showed remarkable activity and stability.
Article
Chemistry, Physical
Lucas G. Moura, Rafael P. Borges, Fabio B. Noronha, Carla E. Hori
Summary: The study investigated the catalytic activity and stability of nickel, platinum, rhodium, and ruthenium-based catalysts during hydrogen production from steam reforming of liquefied petroleum gas. It was found that rhodium and platinum catalysts exhibited higher catalytic activity and lower deactivation compared to nickel and ruthenium catalysts. Small increases in particle sizes of Ni(0) and Ru(0) during the process could contribute to the faster deactivation of Ru/CS and Ni/CS catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Gagandeep Singh Dhillon, Guoqiang Cao, Nan Yi
Summary: In this study, nickel- and iron-modified titanium dioxide (Ni-Fe/TiO2) catalysts were investigated for the dry reforming of methane (DRM) at 550 degrees C. The addition of Fe was found to decrease the conversion of both CO2 and CH4, and XPS results showed changes in the surface nickel and iron species. Characterization techniques, including TGA and Raman spectroscopy, indicated that Fe addition greatly inhibited coke formation and in situ DRIFTS confirmed the formation of carbonate species, which aided in the removal of deposited coke.
Article
Engineering, Environmental
Jeong-Cheol Seo, Eunkyung Cho, Jeongmin Kim, Seung Bo Kim, Jae-Rang Youn, Dong Hyun Kim, Praveen Kumar Ramasamy, Kyubock Lee, Chang Hyun Ko
Summary: This study found that doping various basic metals in nickel-supported alumina catalysts can effectively improve thermal stability, prolonging the reaction stability of nickel-based DRM catalysts. The discovery of the significant effect of Sr on resistance to coke formation offers new opportunities for developing effective nickel-based DRM catalysts with coke resistance by comprehensively considering various factors.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Jeong-Cheol Seo, Eunkyung Cho, Jeongmin Kim, Seung Bo Kim, Jae-Rang Youn, Dong Hyun Kim, Praveen Kumar Ramasamy, Kyubock Lee, Chang Hyun Ko
Summary: Doping strontium in nickel-supported alumina catalysts significantly enhances coke resistance, while doping with different basic metals like magnesium, calcium, strontium, barium, and lanthanum improves the thermal stability of the catalysts for maintaining long-term reaction stability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Anna Giorgia Nobile, David Trummer, Zachariah J. Berkson, Michael Worle, Christophe Coperet, Pierre-Adrien Payard
Summary: The structure of the surface sites of the Union Carbide ethylene polymerization catalyst remains elusive, but recent research suggests the presence of monomeric and dimeric Cr(ii) sites, as well as Cr(iii) hydride sites. However, the analysis of their structure is complicated by large paramagnetic H-1 shifts induced by unpaired electrons on the Cr atoms. In this study, a cost-efficient DFT methodology was implemented to calculate the H-1 chemical shifts for antiferromagnetically coupled metal dimeric sites, allowing for the assignment of observed H-1 shifts for the industrial-like UC catalyst and confirming the presence of monomeric and dimeric Cr(ii) sites as well as dimeric Cr(iii)-hydride sites.
Article
Chemistry, Multidisciplinary
Maximilian Krodel, Lorenz Abduly, Manouchehr Nadjafi, Agnieszka Kierzkowska, Alexander Yakimov, Alexander H. Bork, Felix Donat, Christophe Coperet, Paula M. Abdala, Christoph R. Mueller
Summary: Understanding the effects of different structural parameters of CaO-based CO2 sorbents on cyclic CO2 uptake is crucial for their advancement. Through mechanochemical activation, CaO-based sorbents with varying ratios of Na2CO3:CaCO3 were synthesized to investigate the impact of sodium species on the sorbents' structure, morphology, carbonation rate, and cyclic CO2 uptake. The addition of Na2CO3 in the range of 0.1-0.2 mol% significantly improved CO2 uptake by up to 80% after 10 cycles compared to untreated CaCO3, while higher Na2CO3 loadings (>0.3 mol%) led to a decrease of more than 40% in cyclic CO2 uptake due to accelerated deactivation caused by sintering and the presence of crystalline Na2Ca(CO3)(2) species with high mobility of Na.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ivan Surin, Zhenchen Tang, Julian Geiger, Suyash Damir, Henrik Eliasson, Mikhail Agrachev, Frank Krumeich, Sharon Mitchell, Vita A. Kondratenko, Evgenii V. Kondratenko, Gunnar Jeschke, Rolf Erni, Nuria Lopez, Javier Perez-Ramirez
Summary: The discovery of low-valent manganese stabilized on ceria as a stable catalyst for ammonia oxidation to nitrous oxide offers a promising solution to the high manufacturing costs and suboptimal selectivity and stability of nitrous oxide synthesis. The catalyst exhibits higher productivity than state-of-the-art alternatives and establishes a structure-performance relationship.
ADVANCED MATERIALS
(2023)
Editorial Material
Chemistry, Multidisciplinary
Thomas R. Ward, Christophe Coperet
Article
Chemistry, Multidisciplinary
Paco Laveille, Pascal Mieville, Sourav Chatterjee, Elisa Clerc, Jean-Charles Cousty, Florian de Nanteuil, Erwin Lam, Edy Mariano, Adrian Ramirez, Urielle Randrianarisoa, Keyan Villat, Christophe Coperet, Nicolai Cramer
Summary: The Catalysis Hub - Swiss CAT+ is a funded infrastructure project jointly led by EPFL and ETHZ, which provides a unique integrated technology platform for automated and high-throughput experimentation in sustainable catalytic technologies. Divided into two hubs, EPFL focuses on homogeneous catalysis while ETHZ focuses on heterogeneous catalysis, the platform is open to both academic and private research groups. Through significant investment, both hubs have acquired high-end robotic platforms for synthesis, characterization, and testing of a large number of molecular and solid catalysts. The platforms are accompanied by a fully digitalized experimental workflow and a specific data management strategy to support closed-loop experimentation and advanced computational data analysis.
Article
Chemistry, Multidisciplinary
Seraphine B. X. Y. Zhang, Christophe Coperet
Summary: Non-oxidative coupling of methane (NOCM) is a highly researched reaction that is hindered by harsh reaction conditions and limited catalyst stability. Recent studies have highlighted the importance of catalyst nature and reaction conditions, with metal carbides playing a key role in the incorporation of carbidic carbon. This perspective provides an overview of proposed mechanistic pathways and considerations for experiment conditions, aiming to facilitate a rational catalyst design platform for NOCM.
Article
Chemistry, Multidisciplinary
Julian Felix Baumgaertner, Michael Woerle, Christoph P. Guntlin, Frank Krumeich, Sebastian Siegrist, Valentina Vogt, Dragos C. Stoian, Dmitry Chernyshov, Wouter van Beek, Kostiantyn V. Kravchyk, Maksym V. Kovalenko
Summary: Pyrochlore-type iron (III) hydroxy fluorides (Pyr-IHF) are attractive as low-cost stationary energy storage materials due to their stable supply of constituent elements, high energy densities, and fast Li-ion diffusion. However, their commercial use is currently hindered by the high costs of synthesis and cathode architecture. In this study, a facile and cost-effective dissolution-precipitation synthesis method for Pyr-IHF from soluble iron (III) fluoride precursors is presented. The synthesized Pyr-IHF demonstrates high capacity retention of >80% after 600 cycles at a high current density of 1 A g(-1) without complex electrode engineering. Operando synchrotron X-ray diffraction is used to guide the selective synthesis of Pyr-IHF and investigate the effect of different water contents on rate capability. Li-ion diffusion is found to occur in the 3D hexagonal channels of Pyr-IHF formed by corner-sharing FeF6-x(OH)(x) octahedra.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Weicheng Cao, Alexander Yakimov, Xudong Qian, Jiongzhao Li, Xiaogang Peng, Xueqian Kong, Christophe Coperet
Summary: A strategy based on detecting NMR signatures of 113Cd, 77Se, and 15N augmented with DFT modeling was developed to investigate the interaction between amine ligands and CdSe nanocrystals (NCs). The results showed that amine ligands not only directly bond to surface sites, but also interact through hydrogen bonding with absorbed water. This study provides molecular-level insight into the surface properties of amine-capped CdSe NCs and lays the foundation for designing colloidal NCs with tailored properties.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Seraphine B. X. Y. Zhang, Quentin Pessemesse, Zachariah J. Berkson, Alexander P. Van Bavel, Andrew D. Horton, Pierre-Adrien Payard, Christophe Coperet
Summary: Li/MgO is a prototypical material for oxidative coupling of methane (OCM) with high C-2 selectivity. This study demonstrates that Li/MgO is also an effective catalyst for non-oxidative coupling of methane (NOCM). The presence of Li favors the formation of magnesium acetylide (MgC2), which promotes C-C bond formation and enhances C-2 selectivity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Zixuan Chen, Nora K. Zimmerli, Muhammad Zubair, Alexander V. Yakimov, Snaedis Bjorgvinsdottir, Nicholas Alaniva, Elena Willinger, Alexander B. Barnes, Nicholas M. Bedford, Christophe Coperet, Pierre Florian, Paula M. Abdala, Alexey Fedorov, Christoph R. Mueller
Summary: Gallia-based shells with varying thickness were prepared using atomic layer deposition (ALD) and their atomic-scale structure was studied. The abundance and strength of Lewis acid sites and Bronsted acid sites in the shells were found to correlate with the catalytic performance. This provides insights for the rational design of active Ga-based catalysts.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Moritz Bernhardt, Lukas Latsch, Boris Le Guennic, Christophe Coperet
Summary: This work models surface sites with ten neutral complexes and investigates their potential as single-molecule magnets. The results show that the spatial position of the anionic ligands significantly influences the magnetic properties, while the neutral ligands have a minor role.
HELVETICA CHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Hui Zhou, Scott R. Docherty, Nat Phongprueksathat, Zixuan Chen, Andrey V. Bukhtiyarov, Igor P. Prosvirin, Olga V. Safonova, Atsushi Urakawa, Christophe Coperet, Christoph R. Muller, Alexey Fedorov
Summary: A Cu-Zn/SiO2 catalyst was developed for the efficient and selective hydrogenation of CO2 to methanol. The optimized catalyst exhibited an intrinsic methanol formation rate of 4.3 g h(-1) g(Cu) (-1) and a selectivity to methanol of 83% at 230 degrees C and 25 bar.
Article
Chemistry, Multidisciplinary
Lukas Rochlitz, Jorg W. A. Fischer, Quentin Pessemesse, Adam H. Clark, Anton Ashuiev, Daniel Klose, Pierre-Adrien Payard, Gunnar Jeschke, Christophe Coperet
Summary: This study investigates the effect of Ti doping on the catalytic performance of Pt and PtZn materials in propane dehydrogenation. The results show that Ti-doping significantly changes the electronic structure of nanoparticles and improves the stability of the materials.
Article
Chemistry, Multidisciplinary
Christian Ehinger, Xiaoyu Zhou, Max Candrian, Scott R. Docherty, Stephan Pollitt, Christophe Coperet
Summary: The synthesis of well-defined materials as model systems for catalysis and related fields plays a crucial role in understanding catalytic processes at a molecular level. Organometallic precursors have been developed to produce monodispersed supported nanoparticles, nanocrystals, and films. A new family of precursors based on group 10 metals has been discovered, which can generate small and monodispersed nanoparticles on metal oxides. These precursors show potential for synthesizing bimetallic catalyst materials and have been demonstrated for hydrogenation of CO2 to methanol.
Article
Chemistry, Multidisciplinary
Xiaoyu Zhou, Gregory A. Price, Glenn J. Sunley, Christophe Coperet
Summary: This study synthesized cobalt nanoparticles with different sizes through surface organometallic chemistry and found that under CO2 hydrogenation conditions, smaller particles mainly catalyzed the reverse water-gas shift reaction, while larger particles were more favorable for methanation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
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.
