Article
Green & Sustainable Science & Technology
Concetta Ruocco, Vincenzo Palma, Marta Cortese, Marco Martino
Summary: Oxidative steam reforming of bioethanol was studied using Pt-Ni/CeO2-SiO2 and Ru-Ni/CeO2-SiO2 catalysts with noble metal content ranging from 0-3 wt%. Increasing the noble metal content improved the catalysts' resistance to deactivation, but a further increase up to 2 wt% was detrimental for stability. The most durable catalyst (2 Pt-10Ni) showed complete conversion and stable H-2 yield above 50% when tested under a raw bioethanol stream for 100 h at 4.1 h(-1).
Article
Energy & Fuels
Concetta Ruocco, Marta Cortese, Marco Martino, Vincenzo Palma
Summary: This work investigates the oxidative steam reforming reaction of fuel grade bioethanol in a fluidized bed reactor using a 2Pt-10Ni/CeO2-SiO2 catalyst. The study demonstrates the potential of using bioethanol as a raw feed for cheaper production of bio-hydrogen. The catalytic activity and stability of the 2Pt-10Ni/CeO2-SiO2 catalyst is found to be promising, with high hydrogen yields and low carbon formation rates.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Article
Green & Sustainable Science & Technology
Giuseppe Cristian Piso, Piero Bareschino, Paola Brachi, Claudio Tregambi, Giovanna Ruoppolo, Francesco Pepe, Erasmo Mancusi
Summary: In this study, the Chemical Looping Reforming of biogas was proposed and numerically investigated to achieve the clean, efficient, and cost-effective utilization of renewable carbonaceous fuels. The effects of biogas composition and process parameters on the reaction performances were assessed and discussed, including the conversion degree, syngas yield, and syngas composition.
Article
Chemistry, Applied
Yanan Diao, Haiyan Wang, Bingbing Chen, Li Wang, Xiao Zhang, Chuan Shi
Summary: Plasma-assisted dry reforming of methane is a promising method to produce syngas with unity H2/CO ratio. The design of efficient catalyst materials is of great importance to establish a match between CH4 and CO2 activation rates. Addition of La to the highly ordered mesoporous 10Ni5LaAl-one pot catalyst enhanced reducibility of Ni2+ species and promoted Ni dispersion, resulting in the highest catalytic activity and cokeresistance ability. Stability performance was achieved due to higher discharge power, efficient capacitance, and lower apparent activation energy of CO2 under plasma condition. A possible reaction mechanism was proposed for the 10Ni5LaAl-one pot catalyst during plasma-catalytic dry reforming process.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Jennifer Martin-del-Campo, Marianna Uceda, Sylvain Coulombe, Jan Kopyscinski
Summary: The combination of rotating gliding arc and a spouted catalytic bed in a plasma-catalytic system for dry reforming of methane showed more stable operation using Al2O3-supported catalysts compared to SiO2. Using a catalytic bed in the plasma zone significantly increased selectivity towards CO and H2, reducing acetylene production in the process. The presence of a catalyst also greatly reduced the formation of soot and coke in the reactor, indicating potential for improving catalytic performance during DRM reactions.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Chemistry, Physical
Yahia H. Ahmad, Assem T. Mohamed, Hany A. El-Sayed, Anand Kumar, Siham Y. Al-Qaradawi
Summary: Fine-tuning of materials properties, especially catalytic properties, through innovative synthesis procedures has attracted significant research interest. This study investigates the impact of different synthesis methods on the catalytic performance of Ni/La2O3 catalysts for dry reforming of methane. The results demonstrate that the chosen synthesis techniques significantly affect the morphology, metal support interaction, and surface area of the catalysts, leading to variation in their performance for dry reforming.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
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
Paola Riani, Ioannis Valsamakis, Tullio Cavattoni, Vicente Sanchez Escribano, Guido Busca, Gabriella Garbarino
Summary: Ni-based catalysts with enhanced thermal stability and catalytic performance for CO2 methanation have been synthesized, and it was found that La2O3 plays a promoting role in the reaction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Fahad Maqbool, Syed Z. Abbas, Sergio Ramirez-Solis, Valerie Dupont, Tariq Mahmud
Summary: This study derived kinetic rates for 12 commonly used reforming catalysts based on conversion data obtained from literature, and studied the effects of variables such as temperature, pressure, S/C ratio, and G(s) on the performance of the SMR process. A comparative study was performed for the 12 catalysts, revealing that the choice of catalyst should depend on the operating conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Stefano Padula, Maurizio Troiano, Claudio Tregambi, Roberto Solimene, Piero Salatino
Summary: This paper presents the development of a Directly Irradiated Fluidized Bed Autothermal Reactor (DIFBAR) that utilizes fluidization technology and the principle of an autothermal reactor for efficient solar chemical processes. The viability of recovering sensible energy of solid products to preheat reactants is studied in an experimental prototype. The results demonstrate the feasibility of high-temperature solar-driven chemical reactions in the reactor.
Article
Thermodynamics
Amira Neni, Yacine Benguerba, Marco Balsamo, Alessandro Erto, Barbara Ernst, Djafer Benachour
Summary: The study focuses on Sorption-Enhanced Methane Steam Reforming (SE-MSR) process, highlighting the importance of temperature as a key parameter and the impact of exothermic carbonation reaction on the thermal regimes and performance of catalyst. Optimal operating conditions of both catalyst and adsorbent are crucial for maximizing hydrogen production and reducing CO2-related coke deposition.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Engineering, Environmental
Zhanghao Wan, Shiliang Yang, Guirong Bao, Jianhang Hu, Hua Wang
Summary: The study examines the hydrodynamics and thermochemical characteristics of the sorption enhanced steam methane reforming process in a fluidized bed reactor using a multiphase particle-in-cell model. The effects of critical operating parameters on gas thermal properties, bubble evolution, density-segregation mechanism, and heat transfer coefficients for Ni-catalyst and dolomite particles are discussed. Superficial gas velocity shows a positive effect on CH4 and H2O, gas temperature, and gas density while a negative effect on CO and H-2, gas specific heat capacity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yu Shi, Yiming Li, Shiwei Wang, Yuting Chu, Hongbo Yu, Tong Li, Hongfeng Yin
Summary: This study investigates the synergistic effect of metallic nickel and nickel phosphides in dry methane reforming reaction. The addition of phosphorus improves the dispersion of nickel species and enhances the resistance to carbon deposition. NiP-3/SiO2 catalyst exhibits the best activity, stability, and anti-coking properties.
Article
Chemistry, Applied
Junwei Song, Xianhui Duan, Weiwei Zhang
Summary: In this study, highly active methane dry reforming (DRM) catalysts with superior coke-resistance were obtained by employing a nanocasting method to synthesize mesoporous La2O3 support using KIT-6 as a hard-template. The La2O3-KIT-6 support exhibited a high specific surface area and well-formed mesoporous structure, leading to a highly dispersed Ni active sites and enlarged interfaces between La2O2CO3 and Ni. This facilitated the reaction between coke and La2O2CO3 species, keeping the Ni sites more clean and active.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Kaihang Han, Shuo Wang, Nan Hu, Weidong Shi, Fagen Wang
Summary: In this study, Ni-Cu alloy nanoparticles encapsulated in SiO2 nanospheres were used for CO2 reforming with methane (CRM) reaction. The combination of alloy effect, size effect, metal-support interaction, and confinement effect exhibited high performance, good sintering resistance, and trace carbon deposition in CRM. The appropriate Cu-addition catalysts showed better performance than the excessive Cu-addition catalysts, and the synergy of various effects in the 0.5CuNi@SiO2 catalyst contributed to the highest rates of CH4 and CO2 conversion in CRM reported so far.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Applied
Huaiyuan Zhao, Liping Zheng, Xuewen Li, Ping Chen, Zhaoyin Hou
Article
Chemistry, Physical
Xuewen Li, Yuanyuan Jiang, Ruru Zhou, Zhaoyin Hou
APPLIED CLAY SCIENCE
(2019)
Article
Chemistry, Physical
Chujun Lai, Tianqu He, Xuewen Li, Fang Chen, Linhai Yue, Zhaoyin Hou
APPLIED CLAY SCIENCE
(2019)
Article
Energy & Fuels
Yuanyuan Jiang, Xuewen Li, Huaiyuan Zhao, Zhaoyin Hou
Article
Chemistry, Physical
Huaiyuan Zhao, Yuanyuan Jiang, Haolan Liu, Yihua Long, Zhengbao Wang, Zhaoyin Hou
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Chemistry, Physical
Xuewen Li, Yuanyuan Jiang, Ruru Zhou, Zhaoyin Hou
APPLIED CLAY SCIENCE
(2020)
Article
Chemistry, Physical
Lihua Yang, Yuanyuan Jiang, Zihui Zhu, Zhaoyin Hou
Summary: In this study, Pt catalysts supported on different shaped WO3 (rod-like, lamellar and cuboid) were prepared and tested for the selective oxidation of glycerol in base-free aqueous solution. The Pt/R-WO3 catalyst with rod-like WO3 support showed higher surface area and activity, as well as enhanced selectivity towards glyceric acid.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Physical
Ruru Zhou, Yuanyuan Jiang, Boyong Ye, Huaiyuan Zhao, Zhaoyin Hou
Summary: The study found that using solid acids and microwave irradiation can effectively synthesize jet fuel from glycerol, with PS-0.2 exhibiting the best performance. Microwave irradiation not only increases the reaction rate but also decreases the activation energy.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
Caili Wang, Boyong Ye, Ruru Zhou, Yuanyuan Jiang, Zhaoyin Hou
Summary: This study successfully synthesized four kinds of N-doped carbons using Friedel-Crafts reaction or thermal pyrolysis, and found that the interaction between Pt atoms and C-N=C and bridged -NH in g-C3N4 improved the hydrogenation performance of Pt/g-C3N4 for nitrobenzene. The calculated turnover frequency of each Pt atom in Pt/g-C3N4 reached 42,865 h(-1).
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zixin Zhong, Haolan Liu, Ruru Zhou, Boyong Ye, Jie Fu, Zhaoyin Hou
Summary: This article reports the selective oxidation of 1,3-butanediol to 3-hydroxybutyric acid using molecular oxygen for the first time. PtSb2 alloy exhibited a high selectivity of 82.3% towards 3-HBA at a conversion level of 95.5%. The alloy promoted the tandem oxidation of 3-hydroxybutyraldehyde to 3-HBA and inhibited its dehydration to byproducts.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Zixuan Wang, Boyong Ye, Ruru Zhou, Zixin Zhong, Ping Chen, Zhaoyin Hou
Summary: In this study, a series of Ru-promoted Pd catalysts were synthesized using a facile microwave-assisted method and tested in the hydrogenation of phenol to cyclohexanone. It was found that the addition of a small amount of Ru significantly increased the conversion of phenol without affecting the selectivity of cyclohexanone. The highest conversion of phenol reached 97.9% at 100 degrees C and 1 MPa using Ru0.15Pd4.85/ZrHP catalyst, with a turnover frequency of 1605 h-1.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Physical
Haolan Liu, Zhili Chang, Jie Fu, Zhaoyin Hou
Summary: Cu-based catalysts play a significant role in many industrial processes, but their application under high temperature is limited due to their low Tammann temperature. This study presents a stable Cu/ZnO@SiO2 catalyst prepared by introducing silicon, which enhances its surface area and activity for ethanol dehydrogenation, leading to excellent stability.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Boyong Ye, Wenyang Zhang, Ruru Zhou, Yuanyuan Jiang, Zixin Zhong, Zhaoyin Hou
Summary: In this study, a mesoporous sulfonated high-crosslinked polymer was used as a catalyst for the dehydration of fructose to 5-HMF in different solvents. The catalyst exhibited high surface area, uniform mesopores and abundant sulphonic groups, and showed good catalytic activity under mild reaction conditions. It was also found that the catalyst exhibited enhanced stability in a 1,4-dioxane/H2O mixture compared to dimethyl sulfoxide.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Hengshu Ye, Huaiyuan Zhao, Yuanyuan Jiang, Haolan Liu, Zhaoyin Hou
ACS APPLIED NANO MATERIALS
(2020)
Article
Chemistry, Physical
Yanyan Sun, Zhongshun Cai, Xuewen Li, Ping Chen, Zhaoyin Hou
CATALYSIS SCIENCE & TECHNOLOGY
(2019)
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.
