Article
Nanoscience & Nanotechnology
Yi-Ran Du, Bao-Hua Xu, Shi-Ping Xia, Guang-Rong Ding, Suo-Jiang Zhang
Summary: The covalent bonding of linear poly(ionic liquids (PILs) with covalent organic frameworks (COFs) was achieved in this study, demonstrating improved catalytic activity for specific reactions. The resulting PIL-COF composite maintains crystallinity and porosity, leading to enhanced access of reactants to catalytic active sites. The chemical cross-linkage between PILs and COFs provides robustness, with the PIL-COF-0.33 composite showing high catalytic activity even after 10 cycles of reuse.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Green & Sustainable Science & Technology
Medta Boupan, Kanyapak Prompang, Achiraya Chompunuch, Piwat Boonma, Arthit Neramittagapong, Somnuk Theerakulpisut, Sutasinee Neramittagapong
Summary: Isosorbide, produced from renewable resources, has been investigated as an alternative to toxic bisphenol A in polycarbonate production. The study found that the use of cerium-based catalysts, specifically CeSO-400, achieved the highest isosorbide yield and complete conversion of sorbitol under specific reaction conditions.
JOURNAL OF RENEWABLE MATERIALS
(2022)
Article
Engineering, Environmental
Danping Yuan, Fukui Xiao, Ning Zhao, Cunbao Deng, Xin Huang, Hao Zhang, Qianmin Yang, Yonggang Qiao
Summary: This study successfully prepared a series of ionic liquid functionalized polymer catalysts, P-[C3/4R]-SF, which had a high surface area and strong acidity. The catalysts exhibited excellent catalytic activity and stability in the conversion of sorbitol to isosorbide under mild reaction conditions, with a yield of up to 75%.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Francesco Brandi, Ibrahim Khalil, Markus Antonietti, Majd Al-Naji
Summary: Continuous-flow sorbitol dehydration on beta zeolite in liquid water resulted in efficient isosorbide yield. The excellent pore structure and acidity of beta zeolite enable efficient reaction and diffusion. Operation in continuous flow allowed for high isosorbide yield.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
David De Smet, Madeleine Wery, Miriam Bader, Ines Stachel, Michael Meyer, Myriam Vanneste
Summary: Renewable flame retardants based on sorbitol and isosorbide were synthesized and characterized in this study. Cotton fabrics treated with the modified flame retardants passed ISO 15025 FR test, showing semi-permanent flame retardancy.
Article
Plant Sciences
Leiting Li, Meng Li, Juyou Wu, Hao Yin, Jim M. Dunwell, Shaoling Zhang
Summary: This study identified key sorbitol metabolism-related genes in Rosaceae species and found that the sorbitol pathway genes were expanded through dispersed and tandem gene duplications in the sorbitol present group (SPG). The sorbitol dehydrogenase (SDH) and sorbitol-6-phosphate dehydrogenase (S6PDH) clade A were under stronger purifying selection in SPG, while the sorbitol transporter (SOT) genes were under positive selection in SPG.
Article
Chemistry, Physical
Javier Torres-Linan, Ramiro Ruiz-Rosas, Juana Maria Rosas, Jose Rodriguez-Mirasol, Tomas Cordero
Summary: A Zr-loaded P-containing biomass-derived activated carbon (ACPZr) has been found to exhibit high selectivity towards dimethyl ether (DME) in methanol dehydration reactions at 500 degrees C, with a yield of more than 20% for over 24 hours. A kinetic model was developed to account for the inhibition of water and catalyst deactivation by coke. Results showed that water had a reversible competitive adsorption effect, while coke formation could be attributed to a formaldehyde intermediate.
Article
Chemistry, Physical
Wladyslaw Janusz, Vladimir Sydorchuk, Ewa Skwarek, Svietlana Khalameida
Summary: This paper investigates the changes in surface properties of wet zirconium phosphate gel obtained by precipitation at pH 4 (and at pH 0.7 for comparison) after hydrothermal treatment, including dissociation constants of surface groups and particle size distribution. The study results provide insights into the properties of zirconium phosphate and the impact of hydrothermal treatment on its performance.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Multidisciplinary Sciences
Joshua S. Strauba, Mesopotamia S. Nowotarskib, Jiaqi Luc, Tanvi Shethd, Sally Jiaod, Matthew P. A. Fishera, M. Scott Shelld, Matthew E. Helgesond, Alexej Jerschowc, Songi Hanb
Summary: Phosphates and polyphosphates play important roles in biology, serving as structural components of cells and energy storage vehicles. This study reveals that phosphate species, including orthophosphates, pyrophosphates, and adenosine phosphates, can form dynamic assemblies in dilute solutions. These assemblies are held together by multivalent interactions between phosphates and are reversibly driven by partial dehydration. This discovery highlights a previously unreported property of phosphate's native state in biological solutions.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Chemistry, Physical
Maryam Dookheh, Alireza Najafi Chermahini, Mohammad Saraji
Summary: This study successfully synthesized alkyl levulinates using mesoporous zirconium phosphates as catalysts, achieving high yields and good catalytic regenerability.
Article
Chemistry, Physical
Jack T. Hopper, Ruining Ma, James B. Rawlings, Peter C. Ford, Mahdi M. Abu-Omar
Summary: In this study, a quantitative investigation was conducted on the liquid-phase dehydration of sorbitol using sulfated zirconia (SZ) solid acid catalysts synthesized via sol-gel method. The optimal catalyst achieved complete conversion of sorbitol to isosorbide in less than 2 hours with a yield of 76%. The quantitative kinetics and structure-reactivity studies provided insights into the factors affecting product yields and SZ catalyst activity.
Article
Chemistry, Multidisciplinary
Olena I. Inshyna, Artur M. Mylin, Volodymyr V. Brei
Summary: The investigation focused on the double cyclodehydration of D-sorbitol to isosorbide using Amberlyst 15 and KU-2-8 sulfonic acid resins in a batch reactor without solvent, yielding 78-88% isosorbide with complete conversion of sorbitol. Amberlyst 15 demonstrated stability and produced 10 g of isosorbide per 1 g of catalyst, while KU-2-8 showed high initial catalytic activity but lost 40% of sulfonic groups after one run.
JOURNAL OF CHEMISTRY AND TECHNOLOGIES
(2021)
Article
Engineering, Environmental
Karthik Rathinam, Raji Atchudan, Thomas Nesakumar Jebakumar Immanuel Edison
Summary: This study successfully developed a ZrO2-NaMMT@700 composite with excellent adsorption performance and easy regeneration, which can effectively remove phosphate and Cr(VI) anions from water. The composite demonstrated superior adsorption capacity in experiments and conformed to the Langmuir isotherm and pseudo-second-order kinetic models.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Qingbo Deng, Yi Zhang, Zilong Huang, Ziyan Lin, Tong Chen
Summary: The ratio of Bronsted to Lewis acid sites of sulfated metal oxides dependent on the coverage degree of surface sulfate species, which significantly affected the dehydration efficiency. SO42-/SnO2 and SO42-/TiO2 exhibited different catalytic activities in different dehydration reactions, while SO42-/ZrO2 showed better stability and reusability.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Polymer Science
Yuanyuan Xue, Anna Marie LaChance, Jingjing Liu, Maria Farooqui, Marina D. Dabaghian, Fuchuan Ding, Luyi Sun
Summary: Polymer nanocomposites containing alpha-Zirconium phosphate (Zr(HPO4)2) (ZrP) nanosheets were prepared and investigated for their properties. The ZrP nanosheets were well distributed and oriented in a polyvinyl alcohol (PVA) matrix. The coated PLA films showed high clarity even with a high percentage of ZrP nanosheets. The resulting nanocomposites exhibited improved barrier properties and mechanical strength compared to neat PVA.
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)