Article
Chemistry, Applied
Hiroyuki Itoi, Yuto Kasai, Keita Morishita, Ryutaro Suzuki, Yuka Gotoh, Chika Matsuoka, Masahiro Miyaji, Rikuto Hirade, Yuichiro Tanabe, Hiroyuki Iwata, Yoshimi Ohzawa
Summary: The use of NaY zeolite as a template allows for the efficient synthesis of porous ZTC with a high surface area, providing a simpler and more feasible method compared to previous approaches.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Applied
Yingshu Liu, Haiyang Tao, Xiong Yang, Xiaoyong Wu, Jinjuan Li, Chuanzhao Zhang, Ralph T. Yang, Ziyi Li
Summary: In this study, the effects of Si/Al ratio, temperature, relative humidity, and feed gas compositions on NOx sorption behavior on HZSM-5 zeolites were investigated. The results showed that HZSM-5(25) with low silica exhibited the best performance in NOx adsorption. Oxygen enhanced NOx adsorption, while carbon dioxide had little effect. Lower temperature increased NOx adsorption capacity on HZSM-5(25) due to NO2 physisorption and satisfactory NO oxidation. The study also revealed a potential water-resistant strategy for NOx adsorbents.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Physical
Jiwen Si, Ruifeng Guo, Yan Zhang, Weikun Ning, Yanbin Sun, Wenqing Li, Shiding Miao
Summary: The Linde A-Type zeolite (LTA zeolite) was synthesized from ball clay through calcination and hydrothermal treatment. Ru-0 nanoparticles were in-situ fixed in the zeolite, resulting in excellent catalytic performance with high conversion and stability in the hydrogenation of benzene.
APPLIED CLAY SCIENCE
(2023)
Article
Engineering, Chemical
Huayu Zhang, Yanwei Yang, Zhengbao Wang
Summary: Introducing macropores into the selective layer of membrane can effectively enhance the membrane separation performance. A hierarchical membrane structure, consisting of a macroporous zeolite layer and a thin dense top layer, was fabricated using mesoporous silica spheres (MSPs) as the porogen. The hierarchical LTA zeolite membrane displayed significantly improved H2 (N2) permeance and pervaporation performance compared to the conventional LTA zeolite membrane. This study provides a new approach for constructing zeolite membranes with a hierarchical pore structure.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Clemens Jonscher, Markus Seifert, Nils Kretzschmar, Mathias S. Marschall, Mai Le Anh, Thomas Doert, Oliver Busse, Jan J. Weigand
Summary: This article focuses on the relationship between Si/Al ratio and zeolite morphology of microporous ZSM-5 and analyzes the impact of this relationship on the synthesis process. The results show that with an increasing Si/Al ratio, the solid-state transformation accelerates and the morphology shifts from small clusters to larger spherical particles. The acid site density and zeolite morphology determine the selectivity during methanol conversion.
Article
Materials Science, Multidisciplinary
Mikolaj Mitka, Anna Goral, Lidia Litynska-Dobrzynska
Summary: The addition of Si affects the formation of quasicrystalline phase in Al-Cu-Fe-Si alloys, stabilizing the phase and increasing thermal stability.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Water Resources
Gangling Chen, Jianying Zhang, Tianlin Ma, Yujie Wang, Guihua Chen, Youzhi Guo
Summary: By synthesizing zeolite membrane directly on a low-cost support using natural clay and additives, the manufacturing costs can be significantly reduced while achieving high water permeability.
APPLIED WATER SCIENCE
(2021)
Article
Multidisciplinary Sciences
Jie-Qiong Chen, Yu-Zhao Li, Qing-Qing Hao, Huiyong Chen, Zhao-Tie Liu, Chengyi Dai, Jianbo Zhang, Xiaoxun Ma, Zhong-Wen Liu
Summary: This research demonstrates the direct synthesis of single-layer MWW zeolite with high crystallinity and excellent stability, with a formation mechanism involving balanced rates between nucleation/growth of MWW nanocrystals and incorporation of organosilane into the MWW unit cell. By simply adjusting synthesis conditions, MWW nanosheets with tunable thickness can be obtained.
NATIONAL SCIENCE REVIEW
(2021)
Article
Engineering, Environmental
Zhonghao Peng, Ze Liu, Yu Gao, Jiayu Liu, Dongmin Wang, Hongying Liu, Yanbo Zhang, Li Li
Summary: This paper investigates the effects of various factors on the synthesis of DDR zeolite using silica fume as raw material, and determines the optimum synthesis condition, which reduces the cost of synthesis and achieves the utilization of waste materials.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Applied
Tongxiao Zhou, Bangda Wang, Zhongde Dai, Xia Jiang, Yi Wang
Summary: This study successfully synthesized high-purity mordenite (MOR) zeolite from coal fly ash (CFA) using a simple and green method without organotemplate. The synthesized CFA-based MOR showed promising applications in CO2 adsorption, heavy metal ions adsorption in aqueous solution, and catalyst carrier, exhibiting excellent performance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Engineering, Civil
Nailia R. Rakhimova, Ravil Z. Rakhimov, Vladimir P. Morozov, Aleksey A. Eskin
Summary: The continuous development and expansion of a raw material base in response to increasing environmental and technical requirements is crucial for sustainable development. Recent studies have shown the potential of alkali activation of clays with different mineral compositions for the production of cement and zeolites. Clay thermally treated at 700 degrees C and activated with 6M NaOH resulted in a hardened paste with compressive strength up to 5 MPa.
PERIODICA POLYTECHNICA-CIVIL ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Worapak Tanwongwan, Nuwong Chollacoop, Kajornsak Faungnawakij, Suttichai Assabumrungrat, Puritut Nakhanivej, Apiluck Eiad-ua
Summary: Zeolite, especially MCM-22 zeolite, is a promising material with excellent intrinsic properties for environmental solutions. In this study, a sustainable synthesis route of MCM-22 zeolite using natural resources as starting materials was demonstrated. The results showed that high purity MCM-22 zeolite can be obtained from rice husk silica and aluminosilicate gel extracted from kaolin. Evaluation of reaction time and RHS/ASG ratio on the crystallinity and surface area of MCM-22 was conducted, and the optimal product exhibited desired acidity. Rating: 8/10.
Article
Chemistry, Applied
Wen Liu, Pengfei Wei, Junjie Li, Yanan Wang, Shirui Xu, Zhiqiang Yang, Xuebin Liu, Longya Xu, Xiujie Li, Xiangxue Zhu
Summary: This study successfully controlled the morphology of Al-rich EUO zeolite through inter-zeolite transformation and discovered a solid phase crystallization mechanism. The EUO zeolite obtained by this new strategy showed higher selectivity. This research provides new insights into zeolite morphology control and crystallization mechanisms through inter-zeolite transformation.
Article
Chemistry, Applied
Shohei Tada, Duanxing Li, Mina Okazaki, Hiroka Kinoshita, Masahiko Nishijima, Noriko Yamauchi, Yoshio Kobayashi, Kenta Iyoki
Summary: Highly efficient CO2 utilization methodologies combining methanol synthesis catalysts and methanol conversion catalysts have been developed. The use of ZnO/ZrO2 as the catalyst for methanol synthesis and MOR zeolites as the catalyst for methanol conversion enables one-pass hydrocarbon production via CO2 hydrogenation. By physically mixing these catalysts, bifunctional catalysts are formed, which operate at low pressure and have shown promising results in terms of olefin selectivity.
Article
Biotechnology & Applied Microbiology
Zeng Zijun, Grea Effeney, Graeme J. Millar, Maroun Stephen
Summary: This study found that activating natural zeolite was essential for synthesizing zeolite W from waste natural zeolite powder. Thermal treatment or alkali fusion could promote the formation of zeolite W, with key factors including reaction temperature, SiO2/Al2O3 ratio, and H2O/SiO2 ratio.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Physical
Yu -Yang Gu, Guoliang Liu, Shi-Chao Qi, Chen Gu, Tao Yang, Xiao-Qin Liu, Lin -Bing Sun
Summary: In this study, we prepared photo-switchable metal-organic frameworks decorated with Cu2O active sites, showing controllable guest capture. The obtained PMOFs exhibited higher adsorption capacity due to strong interaction with guest molecules. The azobenzene moieties in the PMOFs could freely switch between trans and cis isomerization upon light irradiation, leading to controlled exposure and shelter of the active sites for tailored guest capture.
Article
Chemistry, Multidisciplinary
Long Zheng, Qian Song, Peng Tan, Sheng-Tao Wang, Xiao-Qin Liu, Lin-Bing Sun
Summary: A facile strategy is developed to introduce photoresponsive metal-organic polyhedra (PMOP) into covalent organic frameworks (COFs) as adsorbents with photoresponsive sites. The obtained photoresponsive host-guest composite (PHGC) adsorbents exhibit photomodulated adsorption capacity on propylene with a change of up to 43.3% and stability during multiple cycles.
Article
Chemistry, Multidisciplinary
Meng-Xuan Gu, Le-Ping Gao, Song-Song Peng, Shi-Chao Qi, Xiang-Bin Shao, Xiao-Qin Liu, Lin-Bing Sun
Summary: Single-atom catalysts (SACs) with maximized atomic utilization of metal sites have shown significantly enhanced activity towards various reactions. In this study, a facile strategy for the preparation of SACs was developed by utilizing the inherent confined space between the template and silica walls in template-occupied mesoporous silica SBA-15. Different transition metal precursors were easily introduced into the confined space by grinding, and single atoms were formed during calcination in the form of M-O-Si. The present strategy is easy to scale up and allows the synthesis of 10 g of SACs in one pot through ball milling.
Article
Chemistry, Multidisciplinary
Shi-Chao Qi, Yong-Lan Liu, Xiao-Jie Lu, Yun-Jie Zhao, Jia-Xin Li, Xiao-Qin Liu, Lin-Bing Sun
Summary: In this study, a nondeforming photo-responsiveness methodology was successfully developed by utilizing Cu-TCPP framework as a sorbent on graphite. The sorbent generated two types of adsorption sites that can modulate electron density distribution of the graphite layer in the c-axis direction, which can further evolve due to photo-stimulated excited states. The CO adsorption capability was improved from 0.50 mmol g(-1) at the ground state to 1.24 mmol g(-1) (0 degrees C, 1 bar) with visible light radiation instead of photothermal desorption.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Ze-Jiu Diao, Si-Yi Liu, Hui Wen, Guoliang Liu, Tao Yang, Jing-Jing Li, Xiao-Qin Liu, Lin-Bing Sun
Summary: Stimuli-responsive porous materials based on detachment mechanism were developed by fabricating a detachable porous organic polymer, DT-POP-1, from the polymerization of anthracene-containing monomer (AnMon) induced by 365 nm UV light. DT-POP-1 could detach into the monomer AnMon under 275 nm UV light or heat, and this polymerization/detachment process was reversible. The significant difference in porosity and adsorption capacity caused by the detachment makes the present detachable porous polymer highly promising in adsorptive separation and drug delivery.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Manish Kumar Dinker, Meng-Meng Li, Kan Zhao, Mingrui Zuo, Lifeng Ding, Xiao-Qin Liu, Lin-Bing Sun
Summary: Type III porous liquids (PLs) can be transformed into Type II PLs by tuning the surface rigidity of insoluble metal-organic polyhedra (MOPs) in a bulky ionic liquid. The obtained PLs show enhanced CO2 capture and catalytic activity for CO2 cycloaddition.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Peng Tan, Yu-Fen Bao, Ding-Hua Liu, Xiao-Qin Liu, Lin-Bing Sun
Summary: Adsorption is a widely applied technique for producing high-purity chemicals. Traditional adsorbents have inflexible properties and suffer from selectivity-desorption trade-off. Photoresponsive adsorbents provide new avenues for adsorption techniques by regulating active sites through steric hindrance or tunable interactions. This concept summarizes recent efforts on the fabrication and application of photoresponsive adsorbents with tunable active sites, and presents future opportunities and challenges of photoregulation on adsorptive sites.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Hui Wen, Wen-Juan Zhang, Ze-Jiu Diao, Wei Liu, Guoliang Liu, Chen Gu, Tao Yang, Hang-Ou Qi, Lin-Bing Sun
Summary: For the first time, smart solid base catalysts were developed by anchoring photoresponsive azobenzene motifs onto UiO-66-NH2. The catalytic activity could be tailored by changing the steric hindrance of the catalysts through the isomerization of azobenzene motifs under UV and visible light irradiation.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Ya Sun, Xuke Zhang, Jialuo Cheng, Minghui Guo, Xiaofang Li, Chunlei Wang, Linbing Sun, Juntao Yan
Summary: Li3PO4-coated Li1.2Ni0.2Mn0.6O2 cathode materials were synthesized by sol-gel method and a facile liquid-evaporation process. The Li3PO4 coating layer not only facilitated lithium-ion diffusion rate and accelerated diffusion kinetics, but also acted as a protective layer to prevent corrosion by HF and other side reactions. The electrochemical performance of the Li-rich layered oxides was significantly enhanced after modification.
Article
Engineering, Environmental
Chen Gu, Hai-Guang Gao, Peng Tana, Ya-Na Liu, Xiao-Qin Liu, Xiao-Hui Hu, Yun-Feng Zhu, Lin-Bing Sun
Summary: For the first time, researchers propose a facile oxidation-etching-oxidation strategy to expose and optimize abundant internal active sites in a typical MXene (Ti3C2), resulting in significantly enhanced hydrogen storage performance. The obtained cheese-like Ti3C2 with enriched Ti/TiO2 activity sites exhibits much better dehydrogenation temperature and rate compared to ordinary Ti3C2 when applied in Mg-based hydrogen storage.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Energy & Fuels
Xian-Yong Wei, Xiang Bai, Feng-Yun Ma, Zhi-Min Zong, Wei Zhao, Zhong-Hai Ni, Xing Fan, Lin-Bing Sun, Jing-Pei Cao, Yun-Peng Zhao, Shi-Chao Qi, Jing Liang, Xiao-Ming Yue, Fang-Jing Liu, Wen-Long Mo, Jing-Mei Liu, Yu-Hong Kang, Guang-Hui Liu, Zhong-Qiu Liu, Li Li
Summary: Low-rank coals, biomass, and heavy petroleum are heavy carbon resources that are not efficiently used. The processes for their current use result in severe environmental pollution and limited economic benefits. Efficiently using these resources can greatly improve the environment and create huge economic benefits.
Article
Chemistry, Physical
Ze-Jiu Diao, Guan-Zhou Wu, Tian-Jing Zhang, Hang-Ou Qi, Jing-Jing Li, Ming Lu, Guoliang Liu, Xiao-Qin Liu, Lin-Bing Sun
Summary: Two hyper-cross-linked polymers, HCP-DiAn and HCP-DiBrAn, were synthesized using dianthracene derivatives as monomers. HCP-DiBrAn exhibited higher surface area and photoactivity, and was evaluated as a catalyst for the photocatalytic oxidation of organic sulfides. Mechanism investigations revealed that the catalytic performance of HCP-DiBrAn was determined by electron and energy transfer pathways. This project demonstrated the potential of dianthracene-based materials for advanced applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Inorganic & Nuclear
Yao Jiang, Mingming Xu, Kang Wang, Tao Yang, Shaojun Jia, Xiao-Qin Liu, Peng Cui, Lin-Bing Sun
Summary: In this study, a new strategy was developed to improve the dispersity, switchability, and utilization of active sites in light-switchable metal-organic cages (LMOCs) by isolating them into the targeted pores of metal-organic frameworks (MOFs) using light-assisted precise size control. Furthermore, reversible trans/cis isomerization of light-switchable motifs in the LMOCs was achieved upon UV/vis-light irradiation, allowing for maximum control over CO2 adsorption behavior. This work provides a facile route for the development of new composite materials with isolated light-switchable motifs for tunable CO2 adsorption.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Yao Jiang, Tao Yang, Xiao-Qin Liu, Peng Cui, Lin-Bing Sun
Summary: This study presents a light-switchable metal-organic cage, NUT-102, incorporated with pendant azobenzene groups for controllable CO2 capture. By irradiating with visible light, the pores of NUT-102 can be exposed to favor CO2 adsorption, while irradiating with ultraviolet light can lead to the sheltering of the pores and reduction of CO2 adsorption. The controllable CO2 adsorption change can reach up to 65.2%.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)