Article
Chemistry, Inorganic & Nuclear
Wei Wang, Fan Zhang, Pengmei Chang, Xiaolin Luo, Kangkang Miao, Guodong Feng
Summary: This study explores the synthesis of ZSM-5/MCM-41 hierarchical porous materials with higher surface area and pore capacity, and examines their catalytic performance in the synthesis of anisole. The results show improved catalytic efficiency compared to the original ZSM-5.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Review
Chemistry, Physical
Daniele S. Oliveira, Rafael B. Lima, Sibele B. C. Pergher, Vinicius P. S. Caldeira
Summary: Zeolites are of great interest due to their catalytic properties, but the size of their micropores limits their use with bulky molecules. Generating secondary porosity through alkaline treatment has gained attention for its simplicity, speed, and cost-effectiveness. This review highlights the importance of alkaline treatment, its parameters, and discusses the properties and catalytic performance of hierarchical zeolites prepared by this method.
Article
Biochemistry & Molecular Biology
Zeinab Mcheik, Ludovic Pinard, Joumana Toufaily, Tayssir Hamieh, T. Jean Daou
Summary: Hierarchical MOR-type zeolites were synthesized using CTAB as a porogen agent, showing higher porous volume and BET surface area. Increasing CTAB concentration led to higher mesoporous volume and BET surface area, while preserving zeolite micropores. By reducing the aluminum content in the synthesis gel, the Si/Al ratio of the zeolite framework can be increased. These synthesized hierarchical MOR-type zeolites exhibited improved catalytic activity for n-hexane cracking compared to large zeolite crystals obtained without CTAB.
Article
Chemistry, Physical
Qi Xiong, Bei Liu, Yijiang Liu, Pu Wang, Hua Cheng, Huaming Li, Zhouguang Lu, Mei Yang
Summary: A simple in-situ self-templating strategy is developed to prepare three-dimensional hierarchical porous carbons with good combination of micro and meso-porous architecture, which exhibit excellent supercapacitive performance.
Article
Engineering, Chemical
Grandprix Thomryes Marth Kadja, Noerma Juli Azhari, St Mardiana, Munawar Khalil, Subagjo, Muhammad Haris Mahyuddin
Summary: Hierarchical ZSM-48 is synthesized at a faster rate by inducing the formation of hydroxyl radicals, leading to one-dimensional crystal growth and the formation of nanorod crystals, which facilitates the formation of larger aggregates and results in improved catalytic performance.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Physical
Jiamin Zhao, Wanglin Zhang, Tao Liu, Yanhua Liu, Ying Qin, Jilong Mo, Chenchen Cai, Song Zhang, Shuangxi Nie
Summary: This research presents a three-step strategy for the large-scale production of triboelectric materials with special nanostructures from natural bamboo. The resulting bamboo/polyaniline triboelectric materials exhibit a hierarchical porous structure, enabling them to maintain high energy harvesting in extreme environments. This work provides new ideas for the construction and application of biomass structural materials under extreme conditions.
Article
Chemistry, Inorganic & Nuclear
Wieslaw J. Roth, Takayoshi Sasaki, Karol Wolski, Barbara Gil, Szczepan Zapotoczny, Jiri Cejka, Martin Kubu, Michal Mazur, Yasuo Ebina, Nobuyuki Sakai, Dai-Ming Tang, Renzhi Ma
Summary: This article introduces a soft-chemical treatment method that can exfoliate layered zeolite MFI into nanosheets, which can be used for the synthesis of layer-based hierarchical and nanocomposite materials. The obtained nanosheets have uniform hydrated thickness and can be reassembled into self-standing discs or films, preserving high acid site concentration and porosity. The oriented MFI films formed by this method can be applied in catalysis and separations.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Risheng Wang, Zhihua Peng, Pingping Wu, Hongman Sun, Yu Zhang, Fazle Subhan, Hailiang Yin, Youhe Wang, Zifeng Yan
Summary: This study presents a novel approach to synthesize nanorod stacked hierarchical ZSM-48 (NSH-ZSM-48) using a newly designed organic structure-directing agent (OSDA). The synthesized NSH-ZSM-48 exhibits abundant mesopores and high surface area, leading to enhanced catalytic activity and selectivity in the selective oxidation of cyclohexane.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Review
Materials Science, Multidisciplinary
Yuanyuan Gao, Jacques Lalevee, Angelique Simon-Masseron
Summary: Porous materials are crucial in chemical processes and emerging technologies. The application of 3D printing in shaping these materials offers advantages over traditional configurations. This review focuses on the latest advances and challenges in 3D printing of porous solids, aiming to contribute to the shape engineering and better understanding of their properties and applications.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Inorganic & Nuclear
Yongqiang Zhang, Shuai Shao, Pingwei Ye, Limin Zhang, Xiaojuan Shen, Qiang Huang, Hui Xu, Huan Liu, Sumin Li
Summary: This study demonstrates the superior adsorption performance of Zr-MOFs/CAC composites for SO2 and NO2 through the growth of Zr-MOFs on activated carbon substrates. The synergistic effect between MOFs and activated carbon, as well as the increased mesoporosity and activated sites, contribute to the enhanced adsorption capacity of the composites.
INORGANIC CHEMISTRY
(2022)
Review
Chemistry, Applied
Gabriel Aguirre-Cruz, Felipe Legorreta-Garcia, Gael Aguirre-Cruz, Lia Stanciu, Gabriel Aguirre-Alvarez
Summary: Novel pure-silica hierarchical zeolite molecular sieves have shown great potential for adsorption and heterogenous catalysis. They surpass conventional zeolites in terms of diffusion and reusability. This review discusses various synthesis routes and methods for these materials, as well as their applications in catalysis and mass transport. The study also addresses the synthesis principles and mechanisms related to the production of mesoporous pure silica zeolites. These materials exhibit high catalytic activity and structural stability, making them an eco-friendly alternative to traditional catalytic platforms.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Polymer Science
Kaifeng Yang, Zetian Zhang, Yang Liu, Shan Li, Deyan Chen, Zhengjun Li
Summary: This article presents a collagen fiber-silica aerogel composite prepared using skin collagen fiber as a template. It demonstrates good thermal stability and insulation performance, making it a promising material for various applications.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Chuankang Shu, Ying Liang, Zhen Zhang, Bin Fang
Summary: Hierarchical porous structures of Ni-3(CO3)(OH)(4) and (NixCo1-x)(6)(CO3)(2)(OH)(8) .H2O were synthesized via a hydrothermal route, with chloride ions playing a crucial role in the morphology of the (Ni,Co)(6)(CO3)(2)(OH)(8) .H2O structures. The electrochemical properties of the products were found to be influenced by their chemical composition and surface property, with Ni-3(CO3)(OH)(4) exhibiting higher specific capacitance but poorer rate performance and cycle stability compared to (Ni,Co)(6)(CO3)(2)(OH)(8) .H2O.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Shengzhe Ding, Muhammad Ganesh, Yilai Jiao, Xiaoxia Ou, Mark A. Isaacs, Mark S'ari, Antonio Torres Lopez, Xiaolei Fan, Christopher M. A. Parlett
Summary: Hierarchical zeolites have the potential to overcome transport limitations and improve active site dispersion and generation, leading to enhanced alcohol conversion rates. Balancing support porosity, acidity, and active site dispersion is crucial for optimal aldehyde production.
ROYAL SOCIETY OPEN SCIENCE
(2021)
Review
Chemistry, Multidisciplinary
Risheng Bai, Yue Song, Ruobing Bai, Jihong Yu
Summary: Hierarchical TS-1 zeolites with multiple porosity levels have attracted increasing interest in recent years due to their improved mass transfer efficiency and enhanced accessibility of Ti active sites. Strategies for constructing hierarchical TS-1 zeolites, such as mesoporogen, mesoporogen-free, and demetallization methods, have been developed to address steric and diffusional issues, leading to improved catalytic performances in oxidative desulfurization and epoxidation reactions. Effective characterization methods for Ti species and hierarchical zeolite structures have been described, along with current challenges and future development perspectives for preparing hierarchical TS-1 zeolite catalysts.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Chemistry, Applied
Yiquan Xie, Ling Zhang, Yiwen Jiang, Shichao Han, Liang Wang, Xiangju Meng, Feng-Shou Xiao
Summary: The study investigated the catalytic combustion of methane over zeolite-supported Pd catalysts, finding significant improvement in catalytic performance through ion exchange, with NaLa-ZSM-5 supported Pd catalyst showing the best result. Using an optimized catalyst, methane conversion could be achieved at a lower temperature. Factors influencing catalytic activity were identified as Pd dispersion and its chemical states.
Article
Chemistry, Applied
Ye Ma, Shichao Han, Qinming Wu, Longfeng Zhu, Huimin Luan, Xiangju Meng, Feng-Shou Xiao
Summary: A new method for synthesizing metal-zeolite catalysts with high yield, reduced pollutants, and a simple process has been reported in this study, potentially important for practical applications in the future.
Article
Chemistry, Applied
Jian Zhang, Zerui Su, Zhiyi Wu, Pingzhou Wang, Feng-Shou Xiao
Summary: This study developed a basic hydroxyapatite supported Pt nanoparticles (Pt/HAP-3) catalyst for the catalytic hydrogenolysis of alkaline lignin, achieving a high monomer yield of 15.1%. The synergy between suitable metal nanoparticles and sufficient basic sites of the carrier was found to be the key factor for the high monomer yield. This work could provide insights for the preparation of efficient catalysts for lignin hydrogenolysis in the future.
Article
Chemistry, Multidisciplinary
Zaibin Guo, Wenming Hao, Jinghong Ma, Ruifeng Li
Summary: The hierarchical EU-1 zeolites prepared using organofunctionalized fumed silica show improved adsorption and diffusion of toluene and 1,3,5-trimethylbenzene, as well as higher conversion rates in the catalytic transformation of 1,3,5-trimethylbenzene compared to conventional microporous EU-1 zeolites. The increased mesoporosity leads to enhanced performance in both adsorption and catalytic processes.
JOURNAL OF CHEMICAL RESEARCH
(2021)
Article
Engineering, Chemical
Chaofeng Zhang, Tonglu Zhang, Jing Zhang, Jiandong Zhang, Ruifeng Li
Summary: The encapsulated IL@SBA-16-Cx solid catalysts show promising selectivity and activity in the synthesis of PODEn, making them potential important catalysts for future PODEn synthetic reactions.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Yongfeng Li, Jiaojiao Su, Feng Yu, Xiaoliang Yan, Dahai Pan, Ruifeng Li, Yongxing Yang
Summary: The Co-containing catalysts supported on super-microporous Al2O3-ZrO2 with different Al/Zr molar ratios showed that the catalytic performance was highly influenced by the textural and chemical properties. Among them, the 2.5Co/AZ(0.7) catalyst with intermediate acidity, high surface area, and high metal dispersion exhibited the best performance in the dehydrogenation of ethylbenzene with CO2.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Applied
Di Zhang, Xin-Mei Liu, Yu-Xiang Liu, Zi-Feng Yan
Summary: The pore structure significantly influences the performance of Ni-Mo/γ-Al2O3 catalyst and the desulfurization pathway of 4,6-dimethyldibenzothiophene. By adjusting the pore size, the reducibility of Mo species and the Ni-Mo-S structure can be modified, resulting in different reaction pathways and efficiencies. The design of deep desulfurization catalysts for environmental protection can be optimized based on these findings.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Yan Wang, Wei Liu, Wei Zhang, Jinghui Sun, Sai Li, Jiajun Zheng, Binbin Fan, Ruifeng Li
Summary: The study demonstrated that alkali treatment can enhance the catalytic activity and selectivity of isomers for n-dodecane hydroisomerization over Pt/ZSM-48 and Pt/ZSM-22 catalysts. The two catalysts have different effects on the generation of isomers, with Pt/ZSM-22 favoring the production of mono-branched isomers near the end of the chains, while Pt/ZSM-48 favoring the formation of di-branched isomers with methyl near the middle of the carbon chains.
Article
Chemistry, Physical
Quanhua Wang, Sai Li, Yanchao Liu, Lichen Zhang, Jiajun Zheng, Binbin Fan, Shuwei Chen, Wenlin Li, Ruifeng Li
Summary: A flowerlike hierarchical SAPO-5 molecular sieve was successfully fabricated using tetrapropyl-ammonium hydroxide as a structure-directing agent via a hydrothermally dynamic crystallization route. Analysis confirmed high crystallinity and large external surface areas. Increasing crystallization time led to more Si species being incorporated into the AFI crystals, highlighting the importance of dynamic crystallization conditions in the synthesis process.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Chemistry, Applied
Meng Pan, Jiajun Zheng, Yang Ou, Quanhua Wang, Lichen Zhang, Ruifeng Li
Summary: By adjusting the crystallization kinetics through changing the amount of NaOH added, hierarchical zeolites with enhanced diffusion property and superior catalytic cracking ability can be achieved. The hierarchical ZSM-5 zeolite modification process involves the formation of wormlike precursors, aggregation, condensation, and the formation of external shell layers.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Applied
Chengtao Wang, Wei Fang, Liang Wang, Feng-Shou Xiao
Summary: This study presents a strategy for optimizing gasoline selectivity by fixing metal nanoparticles within zeolite crystals, which overcomes the ASF limitation and offers a potential route for the direct transformation of syngas to liquid fuels with controllable selectivities.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Energy & Fuels
Ningyue Lu, Hongyan Wang, Yan Wang, Xiaoliang Yan, Binbin Fan, Ruifeng Li
Summary: In this study, a novel bifunctional catalyst Pt@SOD + HZSM-5 was designed, which exhibited outstanding selectivity to C6-cyclic products in the hydrogenative conversion of methylcyclopentane (MCP) through combining spillover hydro/dehydrogenation and acid-catalyzed mechanism. Additionally, the Pt@SOD + HZSM-5 coupling catalyst showed excellent sulfur-tolerant ability.
Article
Chemistry, Physical
Peng Shan, Panpan Niu, Huifang Zhang, Chuanhao Zhang, Ningyue Lu, Yan Wang, Binbin Fan, Ruifeng Li
Summary: The Ir/H-SSZ-13 catalysts showed higher activity and yields in methylcyclopentane ring-opening reaction compared to other catalysts. Ir species supported on H-SSZ-13-A exhibited higher activity than those on H-SSZ-13-B, especially at low Ir loading. The presence of strong acid sites on the external surface of H-SSZ-13-A promoted the reactivity of Ir/H-SSZ-13-A, making it a potential catalyst for ring-opening reactions.
CATALYSIS COMMUNICATIONS
(2021)
Article
Engineering, Chemical
Yan Wang, Sai Li, Yanchao Liu, Jiajun Zheng, Xiaobo Sun, Yanze Du, Zhiping Liu, Bo Qin, Wenlin Li, Guangshuai Wang, Meng Pan, Ruifeng Li
Summary: Hierarchical ZSM-5 catalyst synthesized by traditional hydrothermal method exhibits prolonged catalysis life and excellent catalytic performance, attributed to the shortened diffusion path and autogenetic carbon nanotubes.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Wei Zhang, Haipeng Zhang, Mengxi Ma, Shuzhen Wang, Jiangnan Xiang, Yan Wang, Weijiong Dai, Binbin Fan, Jiajun Zheng, Ruifeng Li
Summary: A series of Ga-modified ZSM-48 zeolites were synthesized by the dynamic hydrothermal method, with Ga species introduced into the molecular sieve framework. Ga modification reduced the acid amount and strength, especially for Bronsted acid. Pt-supported GaZSM-48 showed higher isomer selectivity and improved catalytic performance compared to the original ZSM-48, with Pt/GaZSM-48-1 providing the best iso-dodecane yield of 76%. Ga modification also reduced diffusion resistance and increased the turnover frequency of the catalyst.
REACTION CHEMISTRY & ENGINEERING
(2023)
