Article
Thermodynamics
Kosuke Shido, Mariko Noguchi, Ami Hayashi, Atsushi Nagoe, Hiroki Fujimori
Summary: The effect of precooling treatments on the phase behaviors of OHMBBA was investigated using DSC and DSC-XRD measurements. DSC-Raman spectroscopy was also performed to distinguish various crystalline phases and a glassy N phase. The results demonstrated the usefulness of DSC-Raman spectroscopy in detecting phase transitions and identifying phases.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Chemistry, Analytical
Mauricio Porras, Maria Esperanza Adrover, Marisa Pedernera, Veronica Bucala, Loreana Gallo
Summary: Albendazole is a poorly water-soluble crystalline drug, and mesoporous materials offer a promising strategy to increase its solubility. This study developed quantification techniques combining chemometric models with UV and FT-IR spectra to determine the drug loading content in mesoporous materials without drug release. The results showed that both UV and FT-IR models achieved excellent drug loading predictions, with high correlation coefficients and low errors. These techniques contribute to improving the time and cost of drug loading determination.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2022)
Article
Chemistry, Physical
Leszek Ruchomski, Tomasz Pikula, Daniel Kaminski, Grzegorz Slowik, Marek Kosmulski
Summary: In this study, composites of Fe(CO)(5) deposited on SBA-15 were investigated. The composition and structure of the composites were characterized, and it was found that the properties varied with different iron contents.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Adel Madani, Manar Alghamdi, Bedour Alamri, Shoaa Althobaiti
Summary: Barium titanate ceramics synthesized using the solid-state method were investigated for their optical properties and phase transition characteristics. X-ray diffraction and scanning electron microscopy revealed a perovskite structure. The grain size of doped barium titanate ceramics decreased with increasing concentration of Sb2O3 or Y2O3. XRD investigation showed the formation of a cubic crystal structure. The concentration of (Sb, Y) affected the structure, including the appearance of tetragonal phases, grain size reduction, and microstructure development. The absorption coefficient, extinction coefficient, and refractive index were also studied.
Article
Chemistry, Physical
Suman Pawaria, Jyoti Ahlawat, Manju Bala, Sajjan Dahiya, Anil Ohlan, R. Punia, A. S. Maan
Summary: The amalgamation of different compositions of 20ZnO.(80-x)B2O3.xLi2O glasses was studied, and the influence of lithium oxide on the glass structure was investigated. The structural modifications in the glass network with the addition of lithium oxide were analyzed using FTIR and Raman spectroscopy. The optical transmission studies revealed that specific glass compositions have UV rejection and high transparency in the visible region, making them suitable for radiation protection and UV protective coatings.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Physics, Multidisciplinary
K. R. Naveenkumar, P. Kannappan, K. Asokan, K. Thanigai Arul, Chung-Li Dong, Gaurav Gupta, K. Senthil, R. Dhanasekaran, G. Theophil Anand
Summary: This study reports the structural, morphological and optical characterization of pure and sodium (Na) mixed ZnS nanocomposites. The Na:ZnS nanocomposites were synthesized using the co-precipitation method with Na2SO4. The XRD pattern shows a mixed phase of cubic and hexagonal structure, with a crystalline size of approximately 6 nm. The SEM images reveal the spherical shape of the nanocomposites. The UV-visible absorption spectra indicate a blue shift and increased absorption with increasing Na concentration. The PL study shows near band edge emission and a high intensity of defect level emission. The Raman spectra demonstrate the formation of nanocomposites through changes in phonon frequency, structural disorder, and width for LO phonon mode.
Article
Materials Science, Ceramics
R. Ansari, Devanand Gupta, Pankaj K. Mishra, A. L. Saroj, H. Kumar
Summary: In this study, Se95-xIn5Prx (x = 2, 4, and 6) alloys were prepared and characterized. The results showed the presence of mixed phase of indium selenide and praseodymium selenide, with crystalline entities in the form of nanorods. The optical and thermal properties were found to vary with the praseodymium content.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Hongyu Chen, Yunfei Wang, Jianing Wang, Wenyan Liu
Summary: This paper demonstrates the assembly of CsPbBr3 QDs into SBA-15 for the first time, improving the thermal stability and photoluminescence intensity of SBA-15@CsPbBr3 QDs. The experimental results show that SBA-15 plays a significant role in enhancing the thermal stability of PQDs, indicating excellent potential for future applications.
Article
Chemistry, Applied
Tong Song, Peng Zhang, Chao Zhang, Liliang Gong, Xingzhong Cao, Baoyi Wang, Runsheng Yu, Wei Zhou
Summary: The pore structure of PEI/SBA-15 nanocomposites was investigated using PALS, TEM, XRD, and N2 adsorption and desorption techniques. The results showed that PALS could provide information about the micropores and mesopores in the SBA-15 matrix. The size of the micropores and mesopores obtained from theoretical models was slightly smaller than that obtained from N2 adsorption and desorption techniques due to the presence of open micropores in the channels. This study provides a unique tool for understanding the evolution of nanometer-sized pores and the relationship between the material structure and CO2 adsorption capacity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Applied
Xiaoxing Wang, Xiaoliang Ma, Chunshan Song
Summary: This study investigates the sorption and desorption behavior of SO2 on PEI-SBA-15 sorbents, finding that temperature and PEI loading greatly affect sorption performance. Regenerability of spent sorbents is limited due to strong chemical interactions between SO2 and amine sites. Competitive sorption between SO2 and NO2 is observed, suggesting potential use of PEI-SBA-15 sorbents for deep removal of pollutants from cathode air in fuel cells.
Article
Chemistry, Physical
Usharani Panda, Dilip Kumar Mishra, Sushanta Kumar Kamilla, V. Rama Rao Medicherla, Vasant Sathe, Jyoshnarani Mohapatra, Pravanjan Mallick
Summary: Ni-doped SnO2 powder samples were synthesized and characterized by various techniques, showing nanocrystalline rutile tetragonal structure, decreased bandgap with increasing Ni concentration, and confirmation of room temperature ferromagnetism. The incorporation of Ni ions into the lattice of pure SnO2 was confirmed through shifts in vibrational peaks observed in FTIR spectra.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Environmental Sciences
Inga Zinicovscaia, Nikita Yushin, Doina Humelnicu, Dmitrii Grozdov, Maria Ignat, Stefan Demcak, Ionel Humelnicu
Summary: The study tested the adsorption capacity of silica SBA-15 and titanosilicate ETS-10 towards Ce(III), and characterized the obtained sorbents using various methods. Different parameters such as solution acidity, cerium concentration, contact time, and temperature were investigated for their effects on Ce(III) sorption. ETS-10 exhibited higher adsorption efficiency in the pH range of 4.0-5.0.
Article
Chemistry, Multidisciplinary
Ann-Katrin Beurer, Johanna R. Bruckner, Yvonne Traa
Summary: The study focused on the functionalization of mesoporous silica materials after template removal, introducing azide functionality into the mesopores for clear immobilization of the catalyst. The mechanical stability of materials functionalized in a spatially controlled manner was studied and compared with other methods.
Article
Materials Science, Ceramics
M. H. A. Mhareb, Y. S. M. Alajerami, M. I. Sayyed, K. A. Mahmoud, Taher Ghrib, M. Kh Hamad, Q. A. Drmosh, N. Sfina, M. A. Almessiere
Summary: This study investigates the properties of borosilicate glass-ceramic samples modified with titanium oxide and various ratios of barium oxide, including morphology, optical, structural, mechanical, and radiation-shielding properties. The addition of barium oxide improves the crystalline phase and shielding properties of the samples.
CERAMICS INTERNATIONAL
(2022)
Article
Biochemical Research Methods
Michael Foster, William Brooks, Philipp Jahn, Jesper Hedberg, Andreas Andersson, And Lorna Ashton
Summary: This paper introduces a new deep UV Raman instrument that can provide high specificity and accuracy for biopharmaceutical products, with the potential for online measurement.
JOURNAL OF BIOPHOTONICS
(2022)
Article
Chemistry, Applied
Svatopluk Chytil, Milly Kure, Rune Lodeng, Edd A. Blekkan
FUEL PROCESSING TECHNOLOGY
(2015)
Article
Engineering, Electrical & Electronic
Ingvild Tronstad, Carl Marius Roel, Wilhelm Robert Glomm, Edd Anders Blekkan, Marit-Helen G. Ese
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
(2015)
Article
Chemistry, Physical
Cristian Ledesma, Jia Yang, Edd A. Blekkan, Anders Holmen, De Chen
Article
Engineering, Chemical
A. Lillebo, E. Rytter, E. A. Blekkan, A. Holmen
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2017)
Article
Chemistry, Physical
Qingjun Chen, Ingeborg-Helene Svenum, Yanying Qi, Ljubisa Gavrilovic, De Chen, Anders Holmen, Edd A. Blekkan
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2017)
Article
Engineering, Chemical
Ljubisa Gavrilovic, Jan Brandin, Anders Holmen, Hilde J. Venvik, R. Myrstad, Edd A. Blekkan
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2018)
Article
Chemistry, Applied
Eleni Patanou, Erik Z. Tveten, De Chen, Anders Holmen, Edd A. Blekkan
Article
Chemistry, Applied
Sara Boullosa-Eiras, Rune Lodeng, Hakon Bergem, Michael Stocker, Lenka Hannevold, Edd A. Blekkana
Article
Engineering, Electrical & Electronic
Ingvild Tronstad, Edd Anders Blekkan, Marit-Helen G. Ese
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
(2014)
Article
Engineering, Chemical
Eleni Patanou, Andreas H. Lillebo, Jia Yang, De Chen, Anders Holmen, Edd A. Blekkan
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2014)
Article
Chemistry, Applied
Oyvind Borg, Zhixin Yu, De Chen, Edd Anders Blekkan, Erling Rytter, Anders Holmen
TOPICS IN CATALYSIS
(2014)
Article
Chemistry, Physical
Nikolaos E. Tsakoumis, Eleni Patanou, Sara Logdberg, Rune E. Johnsen, Rune Myrstad, Wouter van Beek, Erling Rytter, Edd A. Blekkan
Article
Engineering, Chemical
Svatopluk Chytil, Chao'en Li, Woo Jin Lee, Rune Lodeng, Anders Holmen, Edd A. Blekkan, Nick Burke, Jim Patel
Summary: The upgrading of biosyngas to convert methane into syngas is a crucial step for hydrogen production from biomass. This study investigates the thermal treatment of a model biosyngas and examines the effects of various variables on the reaction. The proposed reaction mechanism involves dry reforming of methane, reverse water-gas shift reactions, and methane pyrolysis. Additionally, the study reveals the presence of SiO2 species as a support for carbon formation, resulting from the chemical reaction between the reactor wall material and the reactants.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Chemical
Karoline Kvande, Moses Mawanga, Sebastian Prodinger, Bjorn Gading Solemsli, Jia Yang, Unni Olsbye, Pablo Beato, Edd Anders Blekkan, Stian Svelle
Summary: By studying the stepwise mechanism of Cu-zeolites for direct methane activation to methanol (MTM), it is possible to achieve high selectivity in methanol production. This study investigates the acidity and nature of Cu-sites in MCM-22, an untested material for MTM, using adsorption/desorption experiments with n-propylamine, NH3, and CH4. The Cu-exchanged zeolites show moderate performance in MTM (approximately 0.10 mol(MeOH)/mol(Cu)), and the results obtained from MCM-22 are used to search for structure-activity relationships by comparing with other zeolite frameworks. CO-adsorption FT-IR spectroscopy experiments reveal the presence of multiple distinct Cu-sites in MCM-22, one of which is likely associated with inactive Cu species. NH3 adsorption/desorption experiments indicate that the number and strength of Bronsted acid sites before Cu exchange are limited, resulting in a low concentration of C-H-activating Cu-oxo species.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Review
Energy & Fuels
Andreas Helland Lillebo, Anders Holmen, Bjorn Christian Enger, Edd Anders Blekkan
WILEY INTERDISCIPLINARY REVIEWS-ENERGY AND ENVIRONMENT
(2013)
Article
Chemistry, Applied
Lulu Wan, Gan Ye, Yuying Chang, Zhaohan Yang, Guangming Shi, Qiuli Zhang, Jin Wang
Summary: This study developed an efficient approach to upgrade the oxidative desulfurization (ODS) performance of Zr-MOFs with proton stimulation. Experimental results showed that the introduction of protons can significantly improve the ODS efficiency. This work provides a facile and efficient strategy for enhancing the ODS performance of pristine MOFs.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Qiqi Lu, Xiu-Zhi Wei, Qi Zhang, Xinghua Zhang, Lungang Chen, Jianguo Liu, Yubao Chen, Longlong Ma
Summary: The application of Pd-M bimetallic clusters in the selective hydrogenation reaction was investigated, and the Pd0.6Ni@S-1 catalyst was found to exhibit high selectivity in the conversion of phenylacetylene to styrene. The confinement effect of zeolite inhibited over-hydrogenation and improved the stability of the catalysts. Furthermore, the solvent properties also influenced the product distribution.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Review
Chemistry, Applied
Bo Li, Lumin Hong, Changdi Jing, Xianyang Yue, Huabo Huang, Qianqian Jiang, Jianguo Tang
Summary: MOF materials with adjustable pore structure and polymetallic sites have been explored as electrocatalysts for OER. Bimetallic materials show higher electrocatalytic activity than monometallic materials, while carbon-coated and doped MOF catalysts exhibit stable and good OER activity. The synergistic interaction between polymetallic active sites effectively improves the intrinsic activity of MOF on OER.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shichun Gu, Ruyi Wang, Junxiong Zhang, Hairong Dong, Liping Deng, Xue Wang, Yapeng He
Summary: In this study, monodispersed hollow mesoporous organosilica nanospheres with controlled core cavity and mesoporous shell were successfully synthesized. These hollow nanospheres showed a high adsorption capacity for Pb2+ in water solution and exhibited acceptable recycling and stability.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Lucie Havelkova, Bogdana Bashta, Michaela Vankova, Jiri Zednik, Jiri Brus, Jan Svoboda, Alice Vagenknechtova, Jan Sedlacek
Summary: An atom-economic one-step chain-growth coordination homopolymerization providing high yields of functionalized hyper-cross-linked polyacetylenes with a permanent micro/mesoporous texture and a BET area of up to 1062 m2/g is reported. The homopolymerization is highly compatible with the heteroatom groups of the monomers and allows the preparation of well-defined porous networks with a wide spectrum of univalent groups.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shirui Pang, Yuxin Liu, Zhe Zhang, Yuxin Li, Chunguang Li, Zhan Shi, Shouhua Feng
Summary: This study focuses on using a functional separator to suppress the shuttle effect of soluble lithium polysulfides in Li-S batteries. It is found that the functionalized sulfonic acid group not only accelerates the conduction of lithium ions, but also repels polysulfide anions through electrostatic interactions. The performance of the batteries is significantly improved with the use of this functionalized separator.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Pingping Li, Lei Han, Donghun Kim, Kemal Celebi
Summary: This study presents a fast synthetic strategy for the preparation of high-quality platelike MFI crystals using a thin-wall tubular reactor. The strategy is efficient, time-saving, and can be optimized, making it applicable to the preparation and optimization of other important materials.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Haitao Yin, Wei Wang, Yuxin Li, Hu Wen, Shuang Chen, Nanzhe Jiang
Summary: This study presents a template-free and solid-state-like crystallisation method for the synthesis of ZSM-5 zeolite, which can be scaled-up in production. Mechanical mixing of starting material components improves the dispersion of materials, leading to ZSM-5 zeolite with high crystallinity and size uniformity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Congli Li, Jiang Wang, Zhenfei Wang, Jinxiang Dong, Qi Shi
Summary: This study investigates the evolution and autoreduction behavior of Cu species in CuCl/NaY adsorbent during vacuum thermal activation. It is found that Cu species migrate from supercages to the nearby plane of the six-membered ring connecting the supercage and sod cage during vacuum activation. At 150 degrees C, vacuum autoreduction occurs, resulting in the formation of Cu+Cl- species. The results provide reference for the preparation of pi-complex adsorbents.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Irena Khatrin, Iman Abdullah, Alan J. Mccue, Yuni K. Krisnandi
Summary: Hierarchical porous system with two types of mesopores provides a solution to the diffusion limitation in conventional zeolites. Cobalt oxide impregnated hierarchical ZSM-5 zeolite samples with intra- and inter-crystalline mesopores were synthesized using two different strategies. The physicochemical properties of the modified catalysts were analyzed, revealing distinct features given by the two mesoporous configurations. Catalytic activity analysis showed that Co-oxide/ZSM-5 with inter-crystalline mesopores exhibited higher activity in methane partial oxidation reaction compared to Co-oxide/ZSM-5 with intra-crystalline mesopores.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Nataliia Reinders, Martin Durovic, Pavla Honcova, Zaneta Dohnalova, Jana Luxova, Stanislav Slang, Jhonatan Rodriguez-Pereira, Petra S. Sulcova
Summary: This study presents a new method for preparing a microporous Ni2P/C catalyst with high catalytic activity. The redox reaction and carbon matrix formation during high-temperature treatment contribute to the stability and activity of the catalyst. Experimental and analytical results suggest that the microporous structure of the composite plays a crucial role in its catalytic performance. These findings are important for practical applications of efficient hydrogen production by water electrolysis.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Ana Raquel Bertao, Viktoriya Ivasiv, Cristina Almeida-Aguiar, Patricia R. Correia, Antonio M. Fonseca, Manuel Banobre-Lopez, Fatima Baltazar, Isabel C. Neves
Summary: This study developed a zeolite-based delivery system (ZDS) using silver and 5-Fluorouracil as antimicrobial and antineoplastic agents. The ZDS was characterized and its antimicrobial properties were investigated, showing better antibacterial effectiveness for the ZDS containing both silver and 5-FU.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Naonobu Katada, Nobuki Ozawa, Etsushi Tsuji, Keigo Kanehara, Akiho Otsuka, Taiga Sakamoto, Kirari Umezawa, Hitoshi Matsubara, Satoshi Suganuma, Momoji Kubo
Summary: First principles calculations were used to investigate the pathway for methylation of benzene with methane catalyzed by MFI type zeolite-supported Co species. The strong adsorption of benzene on Co is found to lower the activation energy for methane dissociation and promote the formation of toluene precursor. The activation energy of methane dissociation is also affected by the Al-Al distance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Yuan Liu, An T. Ta, Kyoung Chul Park, Shenyang Hu, Natalia B. Shustova, Simon R. Phillpot
Summary: We use density functional theory to investigate the interactions of cerium, americium, and curium cations with crown ethers. Our results demonstrate that crown ethers can capture cerium, americium, and curium ions, and modifying the crown ether structure by substituting nitrogen atoms for oxygen atoms significantly increases their binding energies with radionuclides.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Zhengwu Peng, Shixing Wang, Yihui Wu, Xiang Liu, Hongliang Liu, Dekun Zhang, Likang Fu
Summary: An efficient adsorbent for recovery of germanium was prepared and characterized in this study. The adsorption behavior of Ge(IV) on the adsorbent was analyzed, and the results showed that it follows pseudo-secondary kinetic model and Langmuir isotherm model. The adsorbent exhibited good anionic anti-interference ability and can still maintain high adsorption efficiency after repeated adsorption.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)