Article
Engineering, Chemical
Akira Miwano, Takehiro Yonezawa, Noriko Yamauchi, Kouichi Nakashima, Yoshio Kobayashi
Summary: The study suggests a new coating technique for thermistors using zirconia, which shows excellent chemical resistance and electrical insulation properties. Pre-silica coating on the substrate can improve the adhesion of ZrO2 films.
Article
Chemistry, Multidisciplinary
Julio Correa, Jairo Murillo, Javier Jurado, Lina Garcia, Liliana Tirado, Hernan Colorado, Jesus Evelio Diosa, Alessandro Chiasera, Clara Goyes
Summary: This study focuses on the analysis of the crystallization process and the optical responses of Al2O3/glass-ceramic coatings on a brass substrate after laser surface modification. The study found that increasing irradiation power enhances the resolution of the photoluminescence response, and X-ray diffraction patterns show the presence of different crystalline phases in the irradiated samples.
APPLIED SCIENCES-BASEL
(2021)
Article
Polymer Science
Vikrant G. Gorade, Babita U. Chaudhary, Ravindra D. Kale
Summary: This research focuses on improving the moisture management and quick drying properties of polyester fabric through treatment with microcrystalline cellulose and amino silane. The modified fabric shows enhanced liquid moisture management and remains stable even after multiple laundering cycles, indicating the significant effects of the treatment.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Joanna J. Mikolei, Mathias Stanzel, Raheleh Pardehkorram, Robert Lehn, Marcelo Ceolin, Annette Andrieu-Brunsen
Summary: Microfluidic devices play an important role in point of care diagnostics, especially when made from cheap and renewable materials. The use of cotton threads as renewable material allows for the modular design of three-dimensional fluidic devices and networks. This study presents fluidic threads with modular and tunable wettability, achieved through a silica coating applied onto the cotton thread using sol-gel chemistry and evaporation induced self-assembly. The wettability adjustment affects the fluid imbibition velocity and distance, while mesoporosity and pore functionalization can further tune the fluid velocity within the thread. By knotting different silica functionalized threads together, a predicted fluid guidance through the network is achieved, enabling the modular design of 3D microfluidic thread-based devices.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Agricultural Engineering
Wanyu Liu, Shunmin Yi, Zhonglin Liu, Qiufeng Mo, Xuequan Xian, Lanyu Ma, Yanming Li
Summary: Functional silica-deposited lignin was obtained via sol-gel processing and mechanical grinding for blending with high-density polyethylene (HDPE). Modified lignin exhibited more uniform size distribution and smaller particle size compared with pristine lignin. The modified lignin improved interfacial compatibility with HDPE matrix, leading to significant enhancements in tensile strength and elongation at break. Additionally, silica deposition improved the thermal properties of both lignin and resulting composites.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Chemistry, Multidisciplinary
Supphathee Chaowamalee, Ning Yan, Chawalit Ngamcharussrivichai
Summary: This study focused on the synthesis and characterization of propylsulfonic acid-functionalized nanocomposites based on natural rubber and hexagonal mesoporous silica (NRHMS-SO3H) as heterogeneous acid catalysts. The catalytic performance of these nanocomposites was evaluated in the esterification of levulinic acid with alcohols. Compared to traditional hexagonal mesoporous silica, the NRHMS-SO3H nanocomposites exhibited higher catalytic activity due to the synergistic effect between the strongly acidic-functional group and surface hydrophobicity. Tuning the hydrophobicity and acidity on a nanocomposite surface proved to be an effective strategy for energy reduction in catalysis.
Article
Materials Science, Textiles
Emre Yavuz, Ramazan Erdem, Ertan Kucuksayan, Esin Akarsu, Murat Akarsu
Summary: Hydroxyapatite particles were modified with polyethylene glycol functional silane successfully, maintaining crystal structure unchanged. Electrospun nanofibrous biomembranes incorporating modified HAP exhibited higher cellular protein expression compared to unmodified biomembranes.
FIBERS AND POLYMERS
(2021)
Article
Engineering, Chemical
Yuki Nakashima, Manabu Fukushima, Hideki Hyuga
Summary: Silica nanofibers were grown on chitosan nanofibers as templates, with the morphology controlled by varying processing factors. Chitosan nanofibers acted as good deposition sites for silica nanoparticles, promoting their deposition. Adjusting the amount of chitosan template could control the surface structure of the prepared silica nanofibers.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Physics, Condensed Matter
Taifunisyam Taib, Mohd Rafie Johan, Wan Jefrey Basirun
Summary: Plasmonic nanostructured silver silica with an optimal ratio of silver silica and AgNPs was synthesized successfully for SERS application. TEM images showed homogeneous and spherical nanostructures with a mean particle size of 35 nm, and UV?vis spectroscopy indicated a clear absorption peak. The substrate exhibited the strongest SERS enhancements in a highly alkaline environment, confirming its stability and performance.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Biochemistry & Molecular Biology
Julia C. C. Steinbach, Fabio Fait, Hermann A. A. Mayer, Andreas Kandelbauer
Summary: This study focuses on the synthesis and properties of hybrid organic/inorganic nanocomposites. A quantitative model with high robustness and predictive power was established, demonstrating the complex nonlinear behaviors and partly synergistic interactions between process factors in determining the material properties.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Energy & Fuels
Nagaraju Pasupulety, Abdurahim A. Al-zahrani, Muhammad A. Daous, Hafedh Driss, Hesham Alhumade
Summary: Mesoporous tantalum-zirconium oxide (TZ) solid acid catalysts were synthesized and employed for biodiesel production from higher water and palmitic acid added oil feedstocks. The results showed that the yield of methyl palmitate and soybean oil fatty acid methyl ester (FAME) was significantly improved with the addition of tantalum to ZrO2. The high ester yield on TZ catalysts was attributed to the improved acidity and interaction between the catalyst and methanol and triglycerides.
Article
Polymer Science
Zexiu Qin, Yinliang Zhang, Mingli Liu, Chunfeng Li
Summary: A functional and environmentally friendly composite modifier for wood impregnation was prepared by modifying the surface of silica sol using KH-560. The silica sol/melamine glyoxal resin (Silica sol/MG) composite modifier was prepared through in-situ polymerization using modified silica sol, melamine, and glyoxal as raw materials. The physicochemical properties and structural and thermal properties of the composite modifier were evaluated using various techniques. The results showed improved thermal stability, reduced curing temperature, and relatively uniform particle size distribution when the mass fraction of modified silica sol was 30%-40%.
DESIGNED MONOMERS AND POLYMERS
(2023)
Article
Chemistry, Multidisciplinary
Anithadevi Sekar, Ramanan Vadivel, Ramanujam Ganesh Munuswamy, Rakhi Yadav
Summary: The study introduces a new fingerprint visualizing agent, the biocompatible zinc oxide-carbon dots/silica gel (C-ZnO-dots/Si) nanopowder, which is low-cost and non-toxic. Results show that the synthesized nanopowder performs well in LF identification and can extract features of Level 1-3.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Wafa Ksila, Mohamed Kadri Younes, Abdelhamid Ghorbel, Alain Rives
Summary: Our research focused on the preparation of new zirconia-doped telluric acid catalysts using the sol-gel method, and investigated the optimization of various preparation parameters on the catalyst. The results showed that the addition of HNO3 significantly improved the acidity of the catalyst, while doping zirconia with telluric acid enhanced both the acidity and catalytic performance of the catalyst. However, calcination of the catalyst led to a loss in acidity and a decrease in catalytic activity.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Ekaterina S. Dolinina, Elena V. Parfenyuk
Summary: The study aimed to evaluate the potential of silica-based composites of LA and LM as oral drug formulations, and explored the impact of factors such as release behavior, antioxidant activity, and drug release kinetics on the release process. The results showed that encapsulation of LA and LM in silica matrices is an effective way to improve their bioavailability and antioxidant activity.
Article
Chemistry, Applied
Eng-Poh Ng, Haruna Abdullahi, Fitri Khoerunnisa, Pedro Maireles-Torres, Hooi Ling Lee, Farook Adam, Tau Chuan Ling, Ka-Lun Wong
MICROPOROUS AND MESOPOROUS MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Kok-Hou Tan, Anwar Iqbal, Farook Adam, N. H. H. Abu Bakar, Rahimi M. Yusop, Mohammad Norazmi Ahmad
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2020)
Review
Chemistry, Physical
Nur Athirah Noorhisham, Deana Amri, Ahmad Husaini Mohamed, Noorfatimah Yahaya, Nor Monica Ahmad, Sharifah Mohamad, Sazlinda Kamaruzaman, Hasnah Osman
Summary: Imidazolium-based ionic liquids have been extensively studied for their tunable physicochemical properties, and are commonly used in polymer synthesis. However, limited information on their characterization is available in the literature. This paper provides a comprehensive review of characterization analysis methods and potential applications of imidazolium-based ILs in polymer preparation.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Biochemistry & Molecular Biology
Kok Tong Wong, Hasnah Osman, Thaigarajan Parumasivam, Unang Supratman, Mohammad Tasyriq Che Omar, Mohamad Nurul Azmi
Summary: Fourteen pyrazoline derivatives were synthesized through cyclo-condensation reactions, with compound 4a showing the most potent inhibitory activity with a MIC value of 17 μM. Six other synthesized compounds exhibited moderate activity, with MIC ranges between 60 μM to 140 μM. Compound 4a also showed good bactericidal activity, with a MBC value of 34 μM against Mycobacterium tuberculosis H37Ra.
Article
Multidisciplinary Sciences
Khairunisa Mohd Zamli, Asnuzilawati Asari, Kooi Yeong Khaw, Vikneswaran Murugaiyah, Mariya Al-Rashida, Habsah Mohamad, Hanis Mohd Yusoff, Nurul Huda Abdul Wahab, Hasnah Osman
Summary: The study found that most eugenol derivatives had higher inhibitory activities against butyrylcholinesterase (BChE) compared to acetylcholinesterase (AChE), but their overall inhibitory activity was weak. However, three derivatives showed good AChE inhibitory activity at 10 µg/mL, with compound 9 exhibiting the most potent AChE inhibition with an IC50 of 5.64 µg/mL. Additionally, ligand-protein docking simulation was performed for the most active derived molecules (compounds 3, 6, 9).
Article
Multidisciplinary Sciences
Fatimah Suhaily Abdul Rahman, Dasmawati Mohamad, Habsah Hasan, Hasnah Osman
Summary: The study aimed to investigate the effects of two coumarin derivatives on the surface characteristics of resin-modified glass-ionomer cement (RMGIC). The addition of 3-acetylcoumarin (AC) particles significantly increased the surface hardness of the fabricated RMGIC. However, the particle size of both coumarin derivatives did not affect the surface roughness value and coumarin release profile of the RMGICs.
Article
Chemistry, Multidisciplinary
Nadia Mohamed Yusoff, Hasnah Osman, Mohd. Zaheen Hassan, Mohamed Ashraf Ali, Yeong Keng Yoon, Ezatul Ezleen Kamarulzaman, Muhammad Solehin Abd Ghani, Unang Supratman, Mohamad Nurul Azmi Mohamad Taib
Summary: The West Nile virus (WNV), a rapidly spreading flavivirus globally, lacks clinically approved drugs or vaccines. A series of spiropyrrolidine derivatives were synthesized and studied for their binding affinity to NS2B-NS3 protease, with one compound (5c) showing promising inhibition potential. This highlights the potential use of these compounds as drug candidates against WNV.
INDONESIAN JOURNAL OF CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Fauze Mahmud, Ngit Shin Lai, Siew Eng How, Jualang Azlan Gansau, Khairul Mohd Fadzli Mustaffa, Chiuan Herng Leow, Hasnah Osman, Hasidah Mohd Sidek, Noor Embi, Ping-Chin Lee
Summary: The study elucidates the inhibitory mechanisms of DBP against Hs GSK-3 beta and Pf 3D7, and the antimalarial mode of action of nocardamine. DBP inhibits Hs GSK-3 beta activity through binding to the substrate-binding site, while nocardamine inhibits Pf growth by chelating iron ions.
Article
Multidisciplinary Sciences
Noviany Noviany, Sutopo Hadi, Risa Nofiani, Puspa Dewi Lotulung, Hasnah Osman
Summary: Fabaceae is recognized as the third largest and one of the most influential families among the flowering plants, and its name is linked to Legumes. Legumes are a vast group of angiosperms used as crops, forages, and green manures. Fabaceae compounds, especially flavonoids, play important roles in plant defense and have medicinal uses for human health.
PHYSICAL SCIENCES REVIEWS
(2022)
Review
Chemistry, Analytical
Ahmad Husaini Mohamed, Nur Athirah Noorhisham, Kamariah Bakar, Noorfatimah Yahaya, Sharifah Mohamad, Sazlinda Kamaruzaman, Hasnah Osman
Summary: Imidazolium-based poly(ionic liquids) (PILs) are versatile materials that have attracted considerable attention in dispersive solid-phase extraction (DSPE) techniques. They offer a wide range of functionalities and show potential for development in new adsorbent materials.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Kok Tong Wong, Hasnah Osman, Thaigarajan Parumasivam, Muhammad Solehin Abd Ghani, Mohd Zaheen Hassan, Unang Supratman, Mohamad Nurul Azmi Mohamad Taib
Summary: Two series of new 3,5-disubstituted-pyrazole-1-carbothioamides were synthesized and tested for their anti-tuberculosis activity. Six compounds showed weak activity against Mycobacterium tuberculosis H37Ra.
INDONESIAN JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Analytical
Ahmad Husaini Mohamed, Noorfatimah Yahaya, Sharifah Mohamad, Sazlinda Kamaruzaman, Hasnah Osman, Norikazu Nishiyama, Yuichiro Hirota
Summary: This study reports the development of a magnetic-carboxymethyl cellulose nanofiber composite as a promising adsorbent for the determination of organophosphorus pesticides in water samples. The prepared adsorbent showed a high affinity towards the target analytes and achieved high sensitivity and selectivity. The method was successfully applied to detect organophosphorus pesticide residues in real water samples.
MICROCHEMICAL JOURNAL
(2022)
Review
Chemistry, Analytical
Ahmad Husaini Mohamed, Nur Athirah Noorhisham, Noorfatimah Yahaya, Sharifah Mohamad, Sazlinda Kamaruzzaman, Hasnah Osman, Hassan Y. Aboul-Enein
Summary: Despite the benefits of organophosphorus pesticides (OPPs) in controlling diseases and insects, their accumulation in the soil system can pose a serious threat to ecosystems and human health. It is crucial to isolate and preconcentrate OPPs from the soil matrix to achieve reliable detection due to low residue levels and the complexity of the soil. Sample preparation techniques have been reported to improve analytical measurements, including recovery, precision, detection limit, and quantification limit. The efficiency of extraction depends on the interaction between OPPs and the extraction media.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2023)
Article
Parasitology
M. N. Azmi, N. S. Hasmaruddin, N. A. Mat Ali, H. Osman, S. Mohamad, T. Parumasivam, M. Z. Hassan, M. S. Abd Ghani, K. Awang
Summary: A series of new 2,5-disubstituted-1,3,4-oxadiazole derivatives have been synthesized and characterized. Compound 5d exhibited the highest antibacterial activity against M. smegmatis and showed good synergy with isoniazid. Docking simulation suggested its potential as a pantothenate synthetase inhibitor.
TROPICAL BIOMEDICINE
(2022)
Article
Chemistry, Multidisciplinary
Duha Majeed Hasan, Kasim Mohammed Hello
Summary: The processing of agro-waste into functional materials has attracted attention, with techniques developed to extract silica from rice husk for use as solid catalysts in cellulose hydrolysis. The extracted silica showed promising results for efficient hydrolysis of cellulose into glucose, with nearly 99% conversion achieved in a relatively short period of time at 120 degrees Celsius.
CHEMISTRY AFRICA-A JOURNAL OF THE TUNISIAN CHEMICAL SOCIETY
(2021)
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)
