Article
Chemistry, Physical
Feiyang Geng, Vasudev P. Haribal, Jason C. Hicks
Summary: Plasma-assisted steam methane reforming (SMR) is a promising method for low temperature and small-scale hydrogen production. The selectivity of CO and CO2 products can be controlled by adjusting the temperature, power, and water feed rate. A cascade design can further increase the CO2/CO selectivity.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Energy & Fuels
Wei-Hsin Chen, Partha Pratim Biswas, Hwai Chyuan Ong, Anh Tuan Hoang, Thanh-Binh Nguyen, Cheng-Di Dong
Summary: The study of hydrogen energy is gaining attention for its effectiveness in achieving net zero and environmental sustainability. Bioethanol is a carbon-neutral fuel for hydrogen production and has potential as a sustainable energy source. This research assesses different routes for ethanol reforming and evaluates the impact of catalyst physicochemistry and experimental parameters on hydrogen production. The findings show that non-noble metals like Co and Ni are more reactive than noble metals in ethanol steam reforming, while the sequence of hydrogen selectivity differs in autothermal reforming of ethanol. The review highlights the importance of sustainable hydrogen production and decarbonization in reaching the net zero target.
Article
Chemistry, Applied
Pawel Mierczynski, Magdalena Mosinska, Natalia Stepinska, Karolina Chalupka, Magdalena Nowosielska, Waldemar Maniukiewicz, Jacek Rogowski, Nirmal Goswami, Krasimir Vasilev, Malgorzata Szynkowska
Summary: This study investigated the catalytic properties of Ni catalysts supported on different oxide surfaces in the oxy-steam reforming process of methane. The Ni/CeO2·La2O3 (2:1) catalyst exhibited superior activity and selectivity towards hydrogen formation, attributed to the high content of Ni species on the catalyst surface. However, the low activity of Ni catalysts supported on La2O3 or oxide with high lanthanum content is due to the strong interaction of NiO with the support.
Article
Energy & Fuels
Prathamesh Bodhankar, Shanmukh Patnaik, Ganesh R. Kale
Summary: Autothermal reforming of methane is a widely reported technique for syngas production, the study reveals that specific operational parameters can lead to high conversion efficiency and optimal hydrogen to nitrogen ratio. Thermodynamic analysis identified the best operating parameters for this technology, contributing to efficient hydrogen production.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Xuan Peng, Qibing Jin
Summary: By using advanced techniques of molecular simulations, the chemical equilibrium of methane steam reforming reaction was studied. The highest CH4 conversion, H-2 yield, and selectivity were observed under specific operating conditions. Furthermore, the pore size of activated carbon significantly influenced the chemical equilibrium composition in the pores.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Zichen Du, Fuping Pan, Erik Sarnello, Xuhui Feng, Yang Gang, Tao Li, Ying Li
Summary: This study investigated the photocatalytic effects in high-temperature solar-driven photothermochemical dry reforming of methane (PTC-DRM), revealing that a photoactive Pt/CeO2 catalyst significantly enhances CO and H2 production. The research showed that photoirradiation regenerates surface oxygen vacancies, promoting CO2 activation and conversion into final products.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Tamara S. Moraes, Vanderlei S. Bergamaschi, Joao C. Ferreira, Estevam Spinace
Summary: A core-shell catalyst was tested for ethanol steam reforming reaction under low-temperature conditions, showing excellent activity and high coke inhibition capacity compared to other catalysts.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Energy & Fuels
Shuang Xue, Tian Lan, Guofeng Zhao, Qiang Nie, Chao Meng, Xinyi Xu, Yong Lu
Summary: In this study, a highly active and selective NiCx/Ni-foam catalyst is reported, which is obtained by the endogenous growth of NiC2O4 onto a Ni-foam and subsequent H2-reduction treatment. The preferred catalyst with high content of NiCx is capable of converting 63.6% or 94.3% CO at 350 degrees C or 400 degrees C with trace or < 0.8% CH4 formation for a feed gas with H2O/CO/Ar molar ratio of 4/1/9, and is stable for at least 110 h. It is experimentally and theoretically revealed that the Ni3C facilitates the dissociative activation of H2O and favors CO to form carboxylate species (favorable for CO2 formation) rather than active Ni(CO)n intermediates for CH4 formation thereby enabling the catalyst with high WGSR activity and selectivity.
Article
Chemistry, Multidisciplinary
Junjie Zhang, Zhourong Xiao, Li Wang, Xiangwen Zhang, Guozhu Li
Summary: The Ni valence state on the surface of Ni/Al2O3 catalyst plays a crucial role in the catalytic performance of SMR. By tuning the Ni-0/Ni2+ ratio through reduction temperature control, the catalytic activity and selectivity of the catalyst can be greatly improved.
Article
Chemistry, Multidisciplinary
Luning Chen, Zhiyuan Qi, Xinxing Peng, Jeng-Lung Chen, Chih-Wen Pao, Xibo Zhang, Chaochao Dun, Melissa Young, David Prendergast, Jeffrey J. Urban, Jinghua Guo, Gabor A. Somorjai, Ji Su
Summary: This study demonstrates how the synergy between noble metal single sites and oxygen vacancies enhances hydrogen generation efficiency and CO2 selectivity in methanol steam reforming reactions. It lays the foundation for the rational design of single site catalysts at the atomic scale and the development of highly efficient and selective hydrogen evolution systems.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Applied
S. Uskov, D. Potemkin, V. P. Pakharukova, V. D. Belyaev, P. Snytnikov, V. A. Kirillov, V. A. Sobyanin
Summary: The activation of a nickel-chromium catalyst for low temperature steam reforming of C2+-alkanes to methane rich gas was studied using TPR and XRD in situ techniques. Various reducing agents were tested for activation, with subsequent testing of the activated samples in low-temperature steam reforming of a methane-propane mixture. A passivation process was proposed and tested for compatibility with the activation process in the LTSR reaction mixture.
Article
Chemistry, Physical
Chulmin Kim, Juhan Lee, Sangyong Lee
Summary: In this study, Langmuir-Hinshelwood-based models of the NH3-formation reaction considering H-2 and CO were proposed and compared with a simplified form of the Temkin-Pyzhev model for NH3-formation rate. The kinetic parameters of each model were optimized using experimental and numerical results.
Article
Chemistry, Physical
Mingqiang Chen, Jiaxin Hu, Yishuang Wang, Chunsheng Wang, Zhiyuan Tang, Chang Li, Defang Liang, Wen Cheng, Zhonglian Yang, Han Zhang
Summary: Steam reforming of acetic acid over Ti-modified Ni/Attapulgite catalysts showed promising hydrogen production efficiency, attributed to the synergistic effects among Ti species, Ni active metal, and Attapulgite support, as well as the optimized precipitation sequence determining the surface properties of the catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Olugbenga Akande, BongJu Lee
Summary: This study investigates a microwave plasma torch-based method called plasma steam methane reforming (PSMR) as a solution to the shortage of hydrogen pipeline infrastructure. The experimental results demonstrate that PSMR has high energy yield, small carbon footprint, and real-time fueling capabilities, making it a promising option for commercial-scale hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
J. F. Da Costa-Serra, A. Miralles-Martinez, B. Garcia-Munoz, S. Maestro-Cuadrado, A. Chica
Summary: Ni and Co catalysts supported on ITQ-6 zeolite were synthesized and evaluated for ethanol steam reforming. Co/ITQ-6 showed higher conversion and hydrogen production than Ni/ITQ-6, attributed to smaller cobalt particle size. Co/ITQ-6 also exhibited lower selectivity for by-products and higher stability. Rating: 8/10.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Arvin Liangdy, Wen Jie Lee, Panyawut Tonanon, Richard David Webster, Shane Allen Snyder, Teik-Thye Lim
Summary: A catalytic ceramic membrane (CCM) impregnated with Co-Mn-oxide via citrate sol-gel method was used to activate peroxymonosulfate (PMS) and degrade sulfamethoxazole (SMX). The Co-Mn bimetallic oxides exhibited higher catalytic activity compared to their single oxides due to the synergistic effect between the two cations. Optimal performance of the CCM/PMS process was achieved by controlling catalyst loading, oxidant dosage, and pollutant concentration.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Lek Hong Lim, Preston Tan, Wei Ping Chan, Andrei Veksha, Teik-Thye Lim, Grzegorz Lisak, Wen Liu
Summary: Waste-to-Energy through MSW incineration is an effective waste management strategy, but it releases CO2 and produces ash. This study explores the use of ash-derived sorbents for CO2 capture. The analysis shows that the addition of certain fuels increases the cost of electricity, but also reduces CO2 emissions. Optimizing energy-intensive processes and policy support are important for further improvement and adoption of negative emission technologies.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Guicai Liu, Grzegorz Lisak
Summary: This study proposes a new concept of converting plastic waste into high-value products and utilizing CO2 through fast pyrolysis integrated with volatile chemical looping CO2 splitting. Three conversion modes were evaluated, and it was found that the cracking mode with Ni/Al2O3 or Ni/MgAl2O4 catalyst exhibited better performance in fuel conversion and syngas separation. The cracking mode's efficiency increased with higher temperature, but the interaction between Ni and the support limited the full separation of syngas.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Chat How Joewin Koh Yang, Guicai Liu, Wei Ping Chan, Ya Zhao, Mei Ping Vernette Chin, Wen Liu, Teik Thye Lim, Grzegorz Lisak
Summary: The utilization of ferric sludge as an oxygen carrier (OC) for chemical looping combustion (CLC) of municipal solid waste (MSW) syngas was explored. The performance of ferric sludge in CLC and simultaneous HCl removal was evaluated and compared with iron ore as a benchmarked OC. The results showed that ferric sludge performed better than iron ore in terms of syngas combustion efficiency and HCl removal. Temperature comparison revealed that ferric sludge performed better at lower CLC temperature. Agglomeration was observed when ferric sludge was used in extended CLC cycles, but it was reduced when inert alpha-Al2O3 support was used.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Engineering, Environmental
Arvin Liangdy, Wen Jie Lee, Yueping Bao, Wen-Da Oh, Teik-Thye Lim
Summary: The hybrid catalytic oxidation and membrane filtration process is becoming a popular research topic for removing micropollutants in water. This review focuses on the use of metal oxide-functionalized catalytic ceramic membranes (CCMs) in sulfate radical-based hybrid processes. The fabrication methods of MeOx-CCMs and various characterization techniques are discussed. The importance of intrinsic catalytic and membrane properties in the hybrid process is emphasized, as well as the challenges in real water remediation.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Lili Liang, Siew Cheong Wong, Grzegorz Lisak
Summary: The present study used carbon dots synthesized from non-biodegradable plastic wastes as a nano-priming agent for pea seed treatment. The results showed that seed priming with carbon dots had positive effects on seed germination rate, shoot and root elongation, biomass accumulation, and root moisture level. The seed coat surface erosion after carbon dot priming promoted seed imbibition capability. The study also confirmed the penetration, internalization, and translocation of carbon dots using transmission electron microscopy.
Article
Chemistry, Multidisciplinary
Andrei Veksha, Jintao Lu, Zviad Tsakadze, Grzegorz Lisak
Summary: The utilization of renewable raw materials in industrial manufacturing and the capture of carbon can reduce the carbon footprint. We developed a pyrolysis-based process to produce biogenic multi-walled carbon nanotubes (MWCNTs) and H-2 from biomass. We found that the conversion of hydrocarbon compounds into MWCNTs and H-2 is affected by the release of CO2 during biomass decomposition. Capturing CO2 with a calcium sorbent can improve the pyrolysis gas and enhance the production of MWCNTs and H-2.
Article
Materials Science, Multidisciplinary
Boon Chong Ong, Zhong Chen, Teik-Thye Lim, ZhiLi Dong
Summary: In this study, an effective hole scavenger layer of polyoxometalates (POMs) with excellent redox properties and high durability is coated on titanium dioxide (TiO2) nanorods to enhance the photoelectrochemical (PEC) water oxidation activity. The Co-POMs layers on TiO2 can effectively retard the recombination of photoinduced electron-hole pairs by extracting and transporting the generated holes, resulting in improved overall PEC performance under neutral conditions. This work provides a facile and promising method for promoting PEC water oxidation by depositing Co-POMs layers on TiO2 nanorods.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Environmental
Hui Zhang, Keiichi Okuyama, Shinji Higuchi, Genevieve Soon, Grzegorz Lisak, Adrian Wing-Keung Law
Summary: A multiphase CFD-DEM model was developed to simulate a waste-to-energy gasifying and direct melting furnace. The model used characterizations from laboratory experiments to dynamically simulate the density, heat capacity, and fate of waste and charcoal particles under different conditions. The simulation results matched well with site observations, providing insights into the functioning zones and dynamic changes within the furnace. The study demonstrates the utility of the model for optimizing operating conditions and scaled-up design for future waste-to-energy facilities.
Article
Environmental Sciences
Magnea Freyja Kristjansdottir, Ke Zhao, Selina Hube, Liya Ge, Grzegorz Lisak, Sigurdur Brynjolfsson, Bing Wu
Summary: This study explores membrane-based microalgal harvesting processes to concentrate microalgal cells and recycle liquid nutrients for hydroponic vegetable cultivation. Fouling of the cake layer was observed during both gravity-driven and crossflow filtration, regardless of microalgal solution properties and membrane type. Increasing periodic water flushing frequency alleviated irreversible fouling and cake fouling during crossflow microfiltration. The collected permeate containing phosphorus and nitrogen was found to be a potential cultivation solution, but the growth of plants cultivated with it was slower than those with commercial fertilizer solution.
Article
Engineering, Environmental
Xiaoxu Fu, Wei Ping Chan, Vernette Chin, Yinn Zhao Boon, Wenqian Chen, Ya Zhao, Stephan Heberlein, Yan Gu, James Oh, Grzegorz Lisak
Summary: A high-temperature slagging gasifier was used to co-treat sludge-based waste materials with municipal solid waste (MSW), resulting in successful co-gasification and recovery of reusable slag and recyclable metals. The stable operation of the gasifier was achieved through proper control of temperature profiles, melting of inorganic residues, smooth discharge of molten slag, and effective flue gas emissions control. The waste-derived slag was found to be environmentally safe and showed potential as sustainable construction materials, as indicated by toxicity tests and life cycle assessment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Xin-Yu Jiang, Young-Kwon Park, Jet-Chau Wen, Ha Manh Bui, Yi-Feng Lin, Sanya Sirivithayapakorn, Ta Cong Khiem, Venkata Subbaiah Munagapati, Kun-Yi Andrew Lin
Summary: This study aims to develop the sulfate radical-based chemical oxidation technology (SR-COT) for degrading benzocaine (BZC). A hollow fluffy Co3O4 nanostructure (HFCC) was successfully developed using Oxone as the oxidant and CoMOF as a template, which exhibited higher catalytic activity and better electrochemical properties compared to traditional Co3O4 nanoparticles.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Agriculture, Multidisciplinary
Lili Liang, Andrei Veksha, Grzegorz Lisak
Summary: In this study, the utilization of carbon nanomaterials derived from plastics as nanopriming agents was investigated. The results showed that these nanomaterials significantly improved seed germination, seedling growth, and salt tolerance in pea plants, suggesting their potential application in waste management and agricultural renovation.
ACS AGRICULTURAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Amadu T. Bah, Ziyi Shen, Junna Yan, Feihu Li, Teik Thye Lim
Summary: By combining batch adsorption enrichment with struvite crystallization, we prepared ternary layered double hydroxides (LDHs) with P-preferring elements and evaluated their performance in recovering P from water. The LDHs demonstrated high P adsorption capacities and the recycling tests showed good enrichment for P. Moreover, more than 96% of phosphorus in the P-enriched eluates can be efficiently reclaimed via struvite crystallization. These findings demonstrate the feasibility of combining adsorption enrichment with struvite crystallization for P recovery.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Ta Cong Khiem, Nguyen Nhat Huy, Eilhann Kwon, Jechan Lee, Wen Da Oh, Xiaoguang Duan, Stainslaw Waclawek, Haitao Wang, Grzegorz Lisak, Farshid Ghanbari, Kun-Yi Andrew Lin
Summary: Designing metal oxides with oxygen vacancies (OVs) is a potential strategy for improving the Fenton-like process. However, the nature of OV, the effect of OV enhancement on catalytic performance, the activation of H2O2 by OV, and the relationship between OV and ROS or non-radical pathways are not fully understood. In this study, yolk-shell Co3O4 nanospheres with varying OV were synthesized to investigate the relationship between OV, ROS, and electron transfer in the degradation of sulfadiazine (SDZ) via H2O2 activation. The results showed that the increased OV led to improved conductivity and enhanced adsorption and activation of H2O2, resulting in the generation of more hydroxyl radicals and promoting the degradation of SDZ through increased production of superoxide radicals.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
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)
