Article
Chemistry, Physical
Zhipeng Li, Shengli Niu, Kuihua Han, Yingjie Li, Yongzheng Wang, Chunmei Lu, Shiqing Cheng
Summary: The study investigates the influences of methanol pre-adsorption on the CaO(100) surface in transesterification, showing that pre-adsorption of methanol can enhance the activation effect and promote the transesterification process.
APPLIED CATALYSIS A-GENERAL
(2021)
Review
Agricultural Engineering
Mani Jayakumar, Natchimuthu Karmegam, Marttin Paulraj Gundupalli, Kaleab Bizuneh Gebeyehu, Belete Tessema Asfaw, Soon Woong Chang, Balasubramani Ravindran, Mukesh Kumar Awasthi
Summary: Recent research has shown that heterogeneous catalysts are preferred in biodiesel production, with animal shells and bones being suitable biowastes for synthesizing environmentally friendly and cost-effective catalysts.
BIORESOURCE TECHNOLOGY
(2021)
Article
Energy & Fuels
Ali Sarosh Khawaja, Muhammad Ayman Zaheer, Ali Ahmad, Asif Ali Mirani, Zulfiqar Ali
Summary: Factors such as higher fuel prices, limited fossil fuel resources, and the negative impact of fossil fuels on global warming have made the search for an unconventional sustainable energy source necessary. Biodiesel has gained attention due to its similar properties to fossil fuels and its synthesis from edible and non-edible oils. The heterogeneous catalyst calcium oxide has shown potential for sustainable biodiesel production due to its abundance, low cost, and high activity. Nanotechnology can further improve the catalytic activity of calcium oxide, making it a promising catalyst for biodiesel production.
Article
Chemistry, Inorganic & Nuclear
Kidist Argaw Shiferaw, Joshua Manoj Mathews, Eunsu Yu, Eun-Young Choi, Naresh Hiralal Tarte
Summary: This study focuses on preparing a supported catalyst for the transesterification of waste cooking oil (WCO) by employing zeolite Y doped with sodium methoxide (NaOMe). The catalytic screening results demonstrate that NaOMe/zeolite prepared through a solvent-free, ball-milling process exhibits excellent catalytic activity. In particular, the optimal NaOMe loading on zeolite Y is found to be 20%. The transesterification reaction can be conducted with a lower methanol-to-oil mole ratio of 16:1 and a reaction temperature of 60 degrees C. The characterization of the ball-milled NaOMe/zeolite catalyst includes BET surface area analysis, FE-SEM, TEM, FT-IR, and XRD. The decrease in surface area and crystallinity of zeolite Y in the NaOMe/zeolite catalyst is observed. The transesterification reaction product is fully characterized by 1H-NMR and viscosity analysis, supported by FT-IR characterization. Remarkably, a high mass ratio of 250 g oil/g NaOMe is achieved, indicating the catalyst's high activity.
Review
Green & Sustainable Science & Technology
Haris Mahmood Khan, Tanveer Iqbal, Saima Yasin, Muhammad Irfan, Muhammad Mujtaba Abbas, Ibham Veza, Manzoore Elahi M. Soudagar, Anas Abdelrahman, Md Abul Kalam
Summary: Biodiesel is recognized as a renewable, sustainable, and eco-friendly alternative to traditional diesel. The use of heterogeneous catalysts and cosolvents in biodiesel production can improve yield and efficiency.
Article
Engineering, Environmental
Daniel T. Oyekunle, Maulidi Barasa, Eman A. Gendy, Sieh Kiong Tiong
Summary: In recent years, biodiesel as a substitute for fossil fuels has gained increasing attention, although its production cost is higher. To reduce the cost, biodiesel has been produced from different feedstock based on local availability, but the feedstock quality limits the quality and efficiency of the transesterification process. The quality of biodiesel depends on fatty acid compositions and physicochemical properties of the oil feedstock, and the use of solid-based catalysts has been preferred due to their reusability and ease of separation. Different catalyst properties and process parameters also influence the transesterification reaction.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Review
Engineering, Chemical
Fatai A. Aderibigbe, Suleiman Shiru, H. B. Saka, M. K. Amosa, Sherif Ishola Mustapha, Mohammed Alhassan, Ayoade L. Adejumo, Morufudeen Abdulraheem, R. U. Owolabi
Summary: The demand for cleaner fuels has led to the exploration of alternative technologies such as renewable fuels. Research into second generation biofuel feedstocks holds promise for the future of cleaner energy solutions.
CHEMBIOENG REVIEWS
(2021)
Article
Green & Sustainable Science & Technology
Bidangshri Basumatary, Sanjay Basumatary, Bipul Das, Biswajit Nath, Pranjal Kalita
Summary: This study focused on the development of a solid base catalyst using waste parts of the banana plant for efficient biodiesel production. The catalyst derived from the banana trunk showed the highest efficacy in catalyzing the transesterification reaction of jatropha oil. Comprehensive characterization of the catalysts demonstrated their potential for large-scale biodiesel production with high efficiency.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Gabriela E. Mijangos, Cristina Cuautli, Issis C. Romero-Ibarra, Jorge Vazquez-Arenas, Carlos E. Santolalla-Vargas, Victor Santes, Adrian A. Castaneda-Galvan, Heriberto Pfeiffer
Summary: This study analyzes the influence of sodium and lithium content in the metasilicate crystal structure on the heterogeneous transesterification reaction for biodiesel production. The results show that sodium metasilicate possesses better stability and reutilization capacity compared to lithium metasilicate. DFT calculations reveal significant differences between these two catalysts.
Review
Engineering, Environmental
Nabilah Atiqah Zul, Shangeetha Ganesan, Tuan Sherwyn Hamidon, Wen-Da Oh, M. Hazwan Hussin
Summary: The high cost of biodiesel production is a major obstacle, leading to interest in using waste materials as catalysts for ester exchange. Heterogeneous catalysts, particularly CaO, show promise for enhancing catalytic activity and durability in the transesterification process. This approach not only reduces production costs but also has environmental benefits by utilizing waste materials.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
J. L. Aleman-Ramirez, Joel Moreira, S. Torres-Arellano, Adriana Longoria, Patrick U. Okoye, P. J. Sebastian
Summary: This study demonstrates the development of a sustainable biodiesel production catalyst from moringa leaves, with inorganic carbonate minerals promoting transesterification. The synthesized biodiesel meets commercial specifications, and the catalyst shows potential for reuse in multiple cycles.
Article
Green & Sustainable Science & Technology
Zayed Al-Hamamre, Arwa Sandouqa, Basel Al-Saida, Reyad A. Shawabkeh, Mohammad Alnaief
Summary: A solid heterogeneous catalyst was prepared by impregnation of oil shale ash with KNO3 and subsequent calcination. The effects of different preparation conditions on waste cooking oil to biodiesel conversion were investigated. The characterization of the catalyst and the quantification of the produced biodiesel were performed using various analytical techniques.
Article
Agricultural Engineering
Bahar Ghasemzadeh, Amir Abbas Matin, Biuck Habibi, Mostafa Ebadi
Summary: This research aims to design and prepare a new magnetically recoverable catalyst based on agrowastes, specifically cotton waste, for the production of biodiesel. The proposed core-shell nanocomposite catalyst showed excellent performance in catalyzing transesterification reaction and achieved optimal results under certain conditions.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Energy & Fuels
Igor W. K. Ouedraogo, Emma Brice Happi Tchuessa, Balkissa Sawadogo, Sylvie Mouras, Joel Blin
Summary: The catalytic behavior of K/Fe catalyst in biodiesel synthesis from sunflower vegetable oil via ethanolic transesterification was studied. The catalysts were prepared using conventional methods and characterized by various techniques. The K/Fe3-800 catalyst exhibited excellent activity due to the generation of potassium polyferrite phases on its surface, increasing its catalytic ability. The optimal reaction conditions were determined and the catalyst showed good tolerance to impurities. Furthermore, the K/Fe3-800 catalyst could be reused multiple times without post-treatment, making it a promising catalyst for sunflower oil transesterification.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Green & Sustainable Science & Technology
Vinicius Mateo e Melo, Gabriela Filipini Ferreira, Leonardo Vasconcelos Fregolente
Summary: This article discusses the challenges faced in biodiesel production and the advantages of using heterogeneous catalysts. Research has shown that catalysts derived from sugarcane bagasse biochar have good activity and stability, and can be reused for multiple cycles. However, further studies are needed to reduce calcium ion leaching and explore the potential of using catalysts derived from sugarcane bagasse biochar.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Chemistry, Applied
Areej Alhothali, Hifsa Khurshid, Muhammad Raza Ul Mustafa, Kawthar Mostafa Moria, Umer Rashid, Omaimah Omar Bamasag
Summary: This study evaluated the effectiveness of different methods for simulating and optimizing the adsorptive removal of COD and TOC in produced water using tea waste biochar. The results showed that the ANFIS model outperformed other methods in predicting adsorption data. By utilizing various optimization approaches, maximum removal rates of COD and TOC were achieved.
ADSORPTION SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Maria Khalil, Muhammad Asif Hanif, Umer Rashid, Junaid Ahmad, Ali Alsalme, Toshiki Tsubota
Summary: The present study focuses on the preparation and utilization of granite stone powder waste composite for the effective removal of Terasil dye. The results showed that the granite composites prepared using sodium metasilicate exhibited an exceptionally high dye adsorption capacity. Characterization techniques such as scanning electron microscopy and Fourier transform infrared spectroscopy were employed to determine the morphological features and functional groups of the granite composites.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Chemistry, Multidisciplinary
Constantine Tsounis, Priyank Kumar, Hassan Masood, Rutvij Pankaj Kulkarni, Gopalakrishnan Sai Gautam, Christoph R. Mueller, Rose Amal, Denis A. Kuznetsov
Summary: MXenes, with their tailorable chemistry and favorable physical properties, have great potential in electrocatalytic energy conversion reactions. Further advances specific to electrocatalysis are required to fully exploit their potential. This review discusses the recent advances in performance, stability, compositional discovery and synthesis of MXenes, as well as their prospects in large scale synthesis and solution processing techniques.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Koentadi Hadinoto, N. R. H. Rao, Javiera Barrales Astorga, Renwu Zhou, Joanna Biazik, Tianqi Zhang, Hassan Masood, Patrick J. Cullen, Stuart Prescott, Rita K. Henderson, Francisco J. Trujillo
Summary: This article introduces a newly designed hybrid plasma discharge reactor that produces plasma-activated water (PAW), an effective and energy-efficient disinfectant. By adjusting parameters such as the number and size of orifices in the bubble column, liquid volume, and salinity, the inactivation of Escherichia coli can be further improved.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Materials Science, Multidisciplinary
Aminul Islam, Siow Hwa Teo, Chi Huey Ng, Yun Hin Taufiq-Yap, Shean Yaw Thomas Choong, Md. Rabiul Awual
Summary: This article discusses the interest in developing catalytic desulfurization and denitrification to remove toxic or harmful gases before atmospheric emission. A review of new and advanced SOx/NOx mitigation techniques is provided, offering insights into the key features of this field.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Chemistry, Applied
Umer Rashid, Balkis Hazmi, Rose Fadzilah Abdullah, Siti Fadhilah Ibrahim, Ali Alsalme, Toshiki Tsubota
Summary: In this study, palm kernel shell-based char was developed and utilized for synthesizing bifunctional carbon catalyst. The catalyst showed higher surface area and stronger acid-base properties, making it suitable for efficient esterification and transesterification reactions.
TOPICS IN CATALYSIS
(2023)
Article
Energy & Fuels
Fatma S. Hafez, Bahaaeddin Sa'di, M. Safa-Gamal, Y. H. Taufiq-Yap, Moath Alrifaey, Mehdi Seyedmahmoudian, Alex Stojcevski, Ben Horan, Saad Mekhilef
Summary: This article provides a systematic review of best practices in targeting energy efficiency as a roadmap for carbon mitigation, limiting energy use, improving buildings' energy performance, and reducing energy consumption. It identifies challenges, motivations, recommendations, and pathways for future work, while also discussing methodological aspects for future researchers.
ENERGY STRATEGY REVIEWS
(2023)
Article
Chemistry, Applied
Azizul Hakim Lahuri, Afidah Abdul Rahim, Norazzizi Nordin, Rohana Adnan, Nur Farhana Jaafar, Yun Hin Taufiq-Yap
Summary: Activated carbon treated with KMnO4 and impregnated with iron oxide showed the highest adsorption capacity of 108.60 mg/g. The CO2 adsorption isotherm at 25 °C fitted best with the Freundlich model, indicating multilayer adsorption on a heterogeneous surface. The optimum adsorption temperature was found to be 30 °C, and the adsorption followed a pseudo-second-order kinetic with an activation energy of 39.8 kJ/mol. The slight reduction in adsorption capacity after four cycles demonstrated practical efficiency in CO2 capture.
Article
Biochemistry & Molecular Biology
Gopalakrishnan Sasikumar, Annadurai Subramani, Ramalingam Tamilarasan, Punniyamurthy Rajesh, Ponnusamy Sasikumar, Salim Albukhaty, Mustafa K. A. Mohammed, Subramani Karthikeyan, Zaidon T. Al-aqbi, Faris A. J. Al-Doghachi, Yun Hin Taufiq-Yap
Summary: A series of ternary metal complexes (Co(II), Ni(II), Cu(II), and Zn(II)) were synthesized and characterized by elemental analysis and spectroscopic methods. These complexes were synthesized from metal salts with Schiff's-base-containing amino acids, salicylaldehyde derivatives, and heterocyclic bases, and showed promising pharmacological properties. The complexes exhibited a distorted, square pyramidal geometry around metal ions and their molecular structures were optimized by DFT calculations. The complexes were further investigated for their electrochemical behavior, catalytic properties, antibacterial activity, cytotoxic effects, and anticancer applications.
Article
Multidisciplinary Sciences
Ramalingam Tamilarasan, Annadurai Subramani, G. Sasikumar, Pandurangan Ganapathi, S. Karthikeyan, Sasikumar Ponnusamy, Salim Albukhaty, Mustafa K. A. Mohammed, Zaidon T. Al-aqbi, Faris A. J. Al-Doghachi, Duha S. Ahmed, Yun Hin Taufiq-Yap
Summary: In this study, water-soluble substituted trimeric triaryl pyridinium cations with various inorganic counter anions were successfully synthesized using a solvent-free method. Compared to conventional and silica-supported Muffle furnace methods, the solvent-free synthesis method offers advantages such as non-toxicity, quicker reaction times, ease of workup, and higher yields. Trimeric substituted pyridinium salts exhibit excellent catalytic activity for the preparation of Gem-bisamide derivatives. The molecular docking results showed that benzyl/4-nitrobenzyl substituted triaryl pyridinium salt compounds can strongly interact with VEGFR-2 kinase and control its activity in cancer treatment and prevention.
SCIENTIFIC REPORTS
(2023)
Review
Environmental Sciences
Chi Huey Ng, Mohd Aizzan Mistoh, Siow Hwa Teo, Andrea Galassi, Azreen Ibrahim, Coswald Stephen Sipaut, Jurry Foo, Jeffrey Seay, Yun Hin Taufiq-Yap, Jidon Janaun
Summary: Plastic pollution is a pressing environmental issue that has caused severe and irreversible impacts on marine life, ecosystems, and the environment due to the lack of effective waste management systems. Limited resources and infrastructure in Southeast Asia pose constant challenges to waste management. This study aims to examine the plastic situation in Southeast Asia, understand the issues with existing waste management systems, and review the efforts made by governments, private sectors, social organizations, stakeholders, and consumers to combat plastic pollution.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Engineering, Chemical
Mohd Hafizz Wondi, Rosnah Shamsudin, Robiah Yunus, Mohd Salahuddin Mohd Basri, Maimunah Mohd Ali, Nur Izzah Nabilah Haris
Summary: This study aims to address inefficiencies in the palm oil milling process by designing a machine that can separate mesocarp fibers from nuts before pressing, thus enhancing oil extraction and quality. Stress and deformation analysis confirms the machine's ability to withstand loads without deformation during the separation process.
JOURNAL OF FOOD PROCESS ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Amadi Fidelis Uchenna, Ramli Irmawati, Yun Hin Taufiq-Yap, Saiman Mohd Izham, Usman Idris Nda-Umar
Summary: A biomass derived carbon supported yttrium oxide catalyst (Y2O3/PKS-T700) was synthesized and showed high glycerol conversion and product selectivity in glycerol acetylation reaction. The synthesized catalyst exhibited mesoporous structure, large surface area, and good thermal stability. The catalyst was characterized by various analytical techniques including BET surface area analysis, XRD, TGA, SEM-EDX, FTIR, and TPD-NH3.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Hassan Masood, Tharmakulasingam Sirojan, Cui Ying Toe, Priyank V. Kumar, Yousof Haghshenas, Patrick H. -L. Sit, Rose Amal, Vidhyasaharan Sethu, Wey Yang Teoh
Summary: Accurate band-gap prediction is crucial for designing and discovering new materials. Current methods often underestimate the band gaps, limiting their effectiveness. This study presents a machine learning model with domain adaptation that can rapidly and accurately predict the band gaps of semiconductors, overcoming the scarcity of measured data.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Review
Environmental Sciences
Nurul Najiha Datu Masjidin, Collin Glen Joseph, Yun Hin Taufiq-Yap, Ahmad Zuhairi Abdullah, Noor Fazliani Shoparwe, Nur Ammarah Affandi, Janice Lay Hui Nga
Summary: Aquaculture sectors are rapidly developing worldwide, but their untreated effluents can have detrimental effects on the environment. Pollution and industrial waste are endangering water resources and damaging ecosystems globally. Therefore, it is essential to develop treatment methods for wastewater. Photolysis and photocatalysis, as part of advanced oxidation processes (AOPs), offer a sustainable option for the removal of recalcitrant pollutants from aquaculture effluents. This review aims to provide an overview of the application of photolysis and photocatalysis for degradation of recalcitrant pollutants from aquaculture effluents, discussing degradation schemes, experimental factors, and employed photocatalysts.
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL
(2023)
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)
