Article
Chemistry, Physical
Songlei Mo, Yong Guo, Xiaohui Liu, Yanqin Wang
Summary: The glycolysis of polyethylene terephthalate (PET) is considered the most promising PET recycling strategy. The study found that catalyst activity is positively correlated with acid amount, but species with strong oxygen affinity lower activity. Among several metal-doped catalysts, 4Ti/SBA-15 with abundant Lewis acid sites exhibits excellent PET glycolysis ability and stability, making it a potential catalyst for industrial application.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Ming Hao, Peizhang Gao, Wei Liu, Baizeng Fang, Jinsheng Liang, Tingting Zhang, Youpeng Ding, Hui Zhang, Fei Wang
Summary: A novel Co/CoAl2O4/sepiolite nanocomposite was synthesized in this study, with optimal conditions identified for fabrication. The nanocomposite showed fine cobalt nanoparticles anchored on the surface of CoAl2O4, leading to higher selectivity for high-carbon hydrocarbons in Fischer-Tropsch synthesis. This work provides an effective strategy for low-cost batch fabrication of efficient cobalt-based catalysts.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Environmental
Xi Cheng, Qingge Feng, Dachao Ma, Hongcheng Chen, Xu Zeng, Feifan Xing, Jiayang Teng
Summary: By improving the synthesis process of the catalyst and characterizing the structure of materials, the catalytic activity and stability of CH3-SBA-15-SO3H material in converting glucose to levulinic acid were examined. The results showed that CH3-SBA-15-SO3H exhibited good recyclability and hydrothermal stability, indicating its potential in the development and utilization of biomass resources.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Applied
Roberta Manno, Victor Sebastian, Silvia Irusta, Reyes Mallada, Jesus Santamaria
Summary: This study presents approaches to control the synthesis of Ag nanoparticles using unconventional heating techniques like microwave heating, demonstrating the advantages of these methods in achieving uniform particle size distribution. Deposition of ultra-small Ag nanoparticles on a mesoporous substrate reduces Ostwald ripening and facilitates nanoparticle reusability. The high activity of the resulting nanocatalyst in the degradation of 4-nitrophenol is attributed to the high dispersion of ultra-small Ag nanoparticles and the accessibility provided by wide mesoporous channels in SBA-15.
Article
Green & Sustainable Science & Technology
P. Jain, M. Chimote, C. P. Vinod
Summary: Bimetallic nanoparticles with synergistic effects can enhance the catalytic activity, selectivity, and stability of solid materials. The study synthesized Au@Co core-shell bimetallic nanoparticles and demonstrated efficient and stable CO conversion in the FT reaction.
MATERIALS TODAY SUSTAINABILITY
(2021)
Article
Environmental Sciences
Ehsan Ebrahimi, Hassan Safari, Mohammad Rezaee, Ali Rezaei, Hadi Abdollahi
Summary: In recent years, there has been an increasing demand for energy critical elements (ECEs) due to the rapid advancement of energy-related technology. Spent catalysts have the potential to be a valuable source of ECEs such as Ni, Co, Mo, W, V, and rare earth elements. This study developed an environmentally friendly process using deep eutectic solvents (DESs) to recover cobalt and molybdenum from spent hydroprocessing catalysts. The experimental results showed high metal extraction, with 93% of cobalt and 87% of molybdenum being dissolved at 100 degrees C and a pulp density of 20 g/L for 48 hours. FT-IR and H-NMR analyses were conducted to investigate the formation of hydrogen bonds in the DESs.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Applied
Jimmy Nelson Appaturi, Thiruchelvi Pulingam, Jothi Ramalingam Rajabathar, Fitri Khoerunnisa, Tau Chuan Ling, Soon Huat Tan, Eng-Poh Ng
Summary: SBA-15-Alanine is a mesoporous catalyst with dual acid-base functionality, demonstrating high catalytic activity and selectivity in Knoevenagel condensation of benzaldehyde and ethyl cyanoacetate. The catalyst shows good stability and reusability under novel non-microwave instant heating conditions, suggesting potential as a replacement for base catalysts in condensation reactions.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Kuppusamy Palanichamy, Natarajan Sasirekha
Summary: A one-pot hydrothermal technique was used to synthesize Ti-incorporated mesoporous SBA-15 with varying Si/Ti ratios, which were further modified by introducing Ni and Pt as active metal and promoter, respectively. The characterization analysis confirmed the incorporation of titanium ions and the superior performance of Pt-Ni/Ti-SBA-15 (Si/Ti = 10) in methane dry reforming.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Yutong Zhu, Xiaofei Xu, Jian He, Jie Guo, Ke Song
Summary: In this study, mesoporous Ti-SBA-15 catalysts were synthesized and their catalytic performance in the conversion of fructose to HMF was investigated. High yields of HMF could be obtained by adjusting the Si/Ti ratio and reaction conditions, and the catalyst exhibited good stability.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Physical
Zengqi Lu, Xiaolong Fu, Jiamao Li, Jingwei Hou, Guangming Ran, Chengjian Xiao, Xiaolin Wang
Summary: A hydrophobic microscopic reaction environment was constructed through the modification of mesoporous silica, which helped improve the catalytic activity of the LPCE reaction. The Pt@SBA-15-tetramethyldisilazane catalyst, prepared by modifying the SBA-15 carrier and loading metal Pt, exhibited a superhydrophobic structure with a water contact angle of 158 degrees. This structure enhanced the catalytic performance and prevented catalyst deactivation. Experimental results showed that the catalyst had good catalytic activity in tritium water and maintained high activity after 30 days.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Yu Liang, Binbin Zhao, Qiong Tang, Lei Liu, Jinxiang Dong
Summary: Regularly dispersed Pt particles with various sizes within 1-5 nm were synthesized on SBA-15 supported catalysts by adjusting the addition amount of PVA. Pt nanoparticles centered at 3.5 nm exhibited excellent catalytic performance, mainly due to a suitable ratio of edge sites to flat sites.
Article
Energy & Fuels
Agija Stanke, Valdis Kampars
Summary: The transportation sector's significant contribution to greenhouse gas emissions has prompted the search for sustainable and renewable alternatives to fossil fuels. This study focused on the synthesis of mesoporous Fe/SBA-15 catalysts using natural clays as binders and promoters. The results showed that catalysts agglomerated with kaolin exhibited better performance, and catalysts in powdered form had higher CO conversion rates.
Article
Chemistry, Applied
Tao Liu, Xiaoqiu Ju, Zhixin Hu, Rongrong Xie
Summary: The confinement effect of ordered mesoporous SiO2 was found to effectively inhibit the aggregation of CoOx, promoting the formation of Co(III) species and enhancing the catalytic activity for CO oxidation. Additionally, the pore size of the carrier SBA-15 played a significant role in the catalytic activity of CoOx.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Camila A. Teles, Carmen Ciotonea, Sebastien Royer, Frederic Richard
Summary: The transformation of furfural-acetone condensation adduct (FAc) was studied over molybdenum supported on SBA-15 doped with different acid/oxophilic species. The results showed that the dopants enhanced the activity and selectivity of the catalyst.
Article
Chemistry, Multidisciplinary
Jiun-Horng Tsai, Ting-Yi Lee, Hung-Lung Chiang
Summary: Hexagonal SBA-15 mesoporous material was used as a catalytic template for chemical transformation with Fe, Co, and Ni as catalysts. The impregnation of metal oxides on SBA-15 resulted in a decrease in specific surface area and pore volume. The materials have the potential to be used in pollutant removal, catalytic reactions, and recycling waste into high-value materials.
Article
Green & Sustainable Science & Technology
Luh Putu Pitrayani Sukma, Eika W. Qian
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2018)
Article
Chemistry, Physical
Jianglong Pu, Katsuki Nishikado, Ningning Wang, Thanh Tung Nguyen, Tei Maki, Eika W. Qian
APPLIED CATALYSIS B-ENVIRONMENTAL
(2018)
Editorial Material
Engineering, Chemical
Hideo Kameyama, Ryuji Kikuchi, Masahiko Hirao, Makoto Sakurai, Chihiro Fushimi, Eika Qian, Toshinori Tsuru, Takami Kai
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
(2018)
Article
Engineering, Chemical
Luh Putu Pitrayani Sukma, Xiuhui Wang, Sen Li, Thanh Tung Nguyen, Jianglong Pu, Eika W. Qian
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2019)
Article
Energy & Fuels
Xiuhui Wang, Eika W. Qian
JOURNAL OF THE JAPAN PETROLEUM INSTITUTE
(2020)
Article
Green & Sustainable Science & Technology
Daisuke Higai, Zhebin Huang, Eika W. Qian
Summary: Activated carbon was produced from coconut shell through a process of chemical activation with phosphoric acid. The study investigated the effects of various preparation parameters on porous texture and surface characteristics, as well as the adsorption capacities of activated carbon for chromium, lithium, and cesium. Surface modification using nitric acid was found to enhance adsorption capacities, with oxygen-containing functional groups playing a key role in the adsorption of metal ions, particularly cesium ions.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2021)
Article
Engineering, Chemical
Kihoon Kim, Daisuke Higai, Xiaofan Hou, Mingming Peng, Eika W. Qian
Summary: The study found that the Bronsted acid content on the catalyst and the mesoporous structure play a crucial role in the hydrotreatment of palm fatty acid distillate, affecting the structure of active sites and the formation of products.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Applied
Daisuke Higai, Changmin Lee, Jialin Lang, Eika W. Qian
Summary: Activated carbon-based solid acid catalysts derived from coconut shells via chemical activation and sulfonation showed high catalytic activity in the saccharification of cellulose. The activation temperature, treatment method, and surface chemical structure of the catalysts played crucial roles in determining their catalytic performance.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Daisuke Higai, Changmin Lee, Eika W. Qian
Summary: Graphene oxide, a potential catalyst, shows superior catalytic performance compared to graphite oxide, with the thinning of graphite oxide improving contact efficiency between substrate and catalyst, regardless of the exfoliation method used for preparing graphene oxide.
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
(2021)
Article
Chemistry, Physical
Jianglong Pu, Eika W. Qian, Yi Luo, Kihoon Kim, Mingming Peng
Summary: In this study, Nd-doped Ni@A(2)O(3) core-shell catalysts were prepared to enhance the coke resistance of Ni-based catalysts. The catalytic performance was greatly improved by the incorporation of Nd, leading to decreased yields of CO, CH4, and acetone, increased yield of CO2, and remarkable carbon resistance. The Ni0.01Nd@Al catalyst balanced the exposed Ni surface and the mobile lattice oxygen, showing the highest catalytic activity, lowest coke deposition, and superb decoking ability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Kihoon Kim, Yusei Kawano, Daisuke Higai, Xiaofan Hou, Mingming Peng, Eika W. Qian
Summary: The effects of Co/Mo mole ratio and TiO2 loadings on hydrodeoxygenation and decarboxylation/decarbonylation reactions in the hydrotreating of PFAD were investigated. CoMoS phase exhibited both HDO and DCO activities, while the addition of TiO2 to form TiMoS phase promoted the HDO reaction.
JOURNAL OF THE JAPAN PETROLEUM INSTITUTE
(2022)
Article
Green & Sustainable Science & Technology
Daisuke Higai, Kihoon Kim, Changmin Lee, Eika W. Qian
Summary: A novel and eco-friendly method for direct graphite exfoliation using 1-allyl-pyridinium-based ionic liquids and high-power microwave irradiation was developed. The exfoliated graphene showed improved adsorption on the graphite surface due to the combination of cations and anions in the ILs. The resulting solid acid catalysts exhibited high catalytic activity for the saccharification of cellulose, surpassing several commercial catalysts.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2023)
Article
Energy & Fuels
Mingming Peng, Manaka Nakabayashi, Kihoon Kim, Kenji Kamiya, Eika W. Qian
Summary: A novel alkaline ionic liquid ([APy]OH) was developed as a catalyst and co-solvent for the depolymerization of lignin. Different reaction conditions were investigated, and the combination of [APy]OH and alkali metal salts showed synergistic effects. The depolymerization of three different lignins was studied, with sodium lignosulfonate exhibiting the highest yields of liquid products and aromatics. Changes in lignin structure were observed and a hypothetical pathway for lignin depolymerization was proposed.
Article
Chemistry, Multidisciplinary
Jianglong Pu, Hui Wang, Masayuki Suzuki, Eika W. Qian
Summary: A series of Ru and Ni supported catalysts were prepared and evaluated in the steam reforming of xylenes. The bimetallic 2Ru -> 15Ni catalyst showed superior activity and stability compared to the monometallic catalysts, attributed to the synergic effect of Ni and Ru, with the least coke deposition due to high conversion performance and less coke precursor formation on the catalyst surface.
Article
Chemistry, Physical
Xiuhui Wang, Yi Luo, Moriko Qian, Eika W. Qian
SUSTAINABLE ENERGY & FUELS
(2020)
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)
