Article
Engineering, Chemical
Yali Zhang, Kai Zhang, Chao Shang, Xiaoning Wang, Lei Wu, Guoqing Huang, Hao Wang, Qiming Sun, Xiao Dong Chen, Zhangxiong Wu
Summary: In this study, uniform and hierarchically macro/mesoporous ZSM-5 microspheres were successfully synthesized using a facile and green strategy combining spray-freeze drying and steaming-assisted crystallization. The hierarchical ZSM-5 catalyst exhibited superior catalytic performance in the methanol-to-olefin conversion reaction, with a prolonged lifetime and improved selectivity to ethylene and propylene compared to conventional microporous ZSM-5 and nano-sized ZSM-5.
Article
Chemistry, Applied
T. Onfroy, Z. Qin, S. Casale, V. Valtchev
Summary: Preparation of hierarchical zeolites through chemical etching is a popular research topic due to its significant improvement on diffusive properties and catalytic activity of microporous materials. This study optimizes the NH4F etching process by using less concentrated solutions and milder conditions, demonstrating the possibility of softening the post-treatment conditions by adjusting synthesis parameters such as NH4F/ZSM-5 ratio, etching time, and initial NH4F concentration, resulting in the generation of mesopores with different diameters.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Applied
Rui Feng, Bao Liu, Xiaoyan Hu, Xinlong Yan, Min Zhou
Summary: In this study, ammonia hydroxide was used as an alkaline source for the direct synthesis of HZSM-5 zeolites by SAC and DAC methods. It was found that the crystallization rate of HZSM-5 by DAC was considerably faster than that by SAC, and the catalytic performances were affected by the reactions of cracking products.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Chemistry, Applied
Sama M. Al-Jubouri, Sirhan I. Al-Batty, Stuart M. Holmes
Summary: This study investigated the use of ash extracted from Iraqi common water reeds as a cost-effective silica source for the preparation of ZSM-5 zeolite. By exploring different molar contents and synthesis conditions, high purity ZSM-5 zeolite microspheres were successfully synthesized. The method eliminated the need for an external silica source and achieved direct synthesis of high purity ZSM-5 zeolite microspheres.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Hong Wu, Fei Liu, Yun Yi, Jianxin Cao
Summary: The study reveals that SZ-TS exhibits good reactivity and resistance to carbon deposition deactivation in MTO reaction, which is attributed to its appropriate acid sites and rich mesoporous structure.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Grandprix T. M. Kadja, Mutiara D. Rukmana, Rino R. Mukti, M. Haris Mahyuddin, Adhitya G. Saputro, Triati D. K. Wungu
Summary: In this study, solvent-free synthesis of ZSM-5 zeolites assisted by NMP was reported. The characterization techniques confirmed the formation of highly crystalline ZSM-5 with the presence of NMP molecules. NMR spectroscopy and DFT calculations provided insights into the structure and stability of NMP within ZSM-5.
Article
Chemistry, Applied
Jing Yue, Junjie Li, Min Liu, Wen Liu, Xiujie Li, Sujuan Xie, Chunshan Song, Xinwen Guo, Xiangxue Zhu
Summary: In this study, high-silica MFI zeolite was successfully prepared using a low-temperature crystallization method and seed-directed and C2H5OH filling techniques. The synthetic gel was purified to exclude impurity phases, and well-crystallized ZSM-5 samples with controllable Si/Al ratios and uniform particle sizes were obtained. The obtained high-silica MFI zeolite exhibited superior catalytic stability compared to the conventional sample during methanol-to-propylene and n-butene cracking reactions.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Energy & Fuels
Lei Han, Ruoyu Wang, Peng Wang, Yuchen Sha, Aiguo Zheng, Qiuqiao Jiang, Mudi Xin, Haitao Song, Wei Lin
Summary: Featuring engineerable reaction pathway, ordered hierarchical cracking over core-shell structured zeolites plays a pivotal role in achieving high-efficient conversion of low-value oil fractions. A novel embryo seed-breeding approach was developed to synthesize polycrystalline ZSM-5@Beta core-shell composites for boosted light olefin production. The pZ@B composites showed enhanced inner-diffusion properties and improved hydrothermal stabilities, leading to the highest conversion and yield of ethylene and propylene in cracking reactions.
Article
Chemistry, Analytical
Dongyu Wang, Yixin Nie, Peilin Wang, Qiang Ma
Summary: In this work, Cu nanoclusters were synthesized on CeO2 nanorods, which acted as a catalyst and improved the electrochemiluminescence signal and stability of Cu nanoclusters. MXene nanosheets/Au nanoparticles were used as electrode modification materials to construct a sensing platform for detecting miRNA-585-3p in triple negative breast cancer tissues.
Article
Chemistry, Organic
K. A. Babina, D. O. Shestakova, E. Yu Gerasimov, I. A. Shamanaeva, E. Parkhomchuk
Summary: ZSM-5 crystals with metastable aggregate-like morphology have been successfully synthesized using hydrothermal synthesis method, and the evolution of these crystals during HT treatment has been observed.
PETROLEUM CHEMISTRY
(2022)
Article
Engineering, Chemical
Mohammad Sadeghpour Aghdam, Sima Askari, Rouein Halladj, Amir Fouladi Tajar
Summary: The use of ultrasonic waves in the synthesis of zeolites leads to shorter crystallization time and improved properties. The study investigates the hydrothermal and sonochemical synthesis methods to prepare nanostructured ZSM-5/ZSM-12 composite zeolites with different Si/Al ratios and alkalinity. The results show that sonochemical synthesis enhances crystallization, amorphous microcrystal formation, and the dominance of MFI phase. The sonochemical zeolites exhibit higher crystallinity, smaller crystals, greater surface areas, higher Bronsted acid sites concentration, and stronger strength of moderate/strong acid sites compared to hydrothermal zeolites. Moreover, the sonochemical zeolites demonstrate higher methanol conversion, selectivity toward olefins, and lower alkanes selectivity in the MTH conversion reaction.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Jingyun Zhang, Mingya Liu, Zhen Jia, Fanglin Lv, Yunxi Hou, Zewei Hu, Hanli Zheng, Jianfeng Liu, Shitao Yu, Yue Liu
Summary: In this paper, ZSM-5/FexOy@C/Ni composite absorbing material with double core-shell structure was prepared and studied. The optimized composites showed excellent microwave absorption properties, and the sample's absorption property could be adjusted by changing the carbon layer's thickness to achieve the best impedance matching. The enhanced electromagnetic absorption performance was attributed to the synergistic effect of dielectric loss and magnetic loss and the enhanced porous core-shell interface effect.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yu Sun, Shiwei Cao, Jie Wang, He Tang, Zhengkang Yang, Tong Ma, Yanjun Gong, Guang Mo, Zhihong Li
Summary: This study presents a novel synthesis method for twin-free ZSM-5 single crystal with nanoscaled b-axis orientation, which exhibits excellent catalytic performance in the methanol to propylene (MTP) reaction. By introducing ZSM-5 nanosheet seed and n-butylamine template, the desired ZSM-5 zeolite can be obtained within a short crystallization time. The as-synthesized ZSM-5 zeolite features open and straight channels, as well as an inverse Al zoned distribution, leading to improved molecular diffusion and inhibition of coke formation. The optimized nanoslab ZSM-5 zeolite demonstrates high selectivity to propylene and long catalytic life in the MTP reaction.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Applied
Jiale Zhu, Siyan Yan, Yuan Qian, Xuedong Zhu, Fan Yang
Summary: A novel fluffy-ball like ZSM-5 zeolite was synthesized by biphasic hydrothermal method and exhibited improved physicochemical properties and catalytic performance in hexane cracking reaction. The fluffy-ball like ZSM-5 possessed uniform morphology and higher pore volumes, leading to enhanced diffusion efficiency and suppressed side reactions. The catalyst demonstrated higher selectivities to light olefins and improved stability compared to conventional ZSM-5.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Xiang Long Huang, Pan Xiang, Hanwen Liu, Chi Feng, Shaohui Zhang, Ziqi Tian, Hua Kun Liu, Shi Xue Dou, Zhiming Wang
Summary: The achievement of high-performance room-temperature sodium-sulfur batteries requires the fabrication of multifunctional sulfur electrodes through proper materials design strategies. In this study, a functionalized sulfur cathode was created by in situ implantation of polar MnO nanoparticles into carbon microspheres self-assembled by porous nanorods. The as-designed sulfur cathode exhibits excellent cycling performance and specific capacity.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Editorial Material
Multidisciplinary Sciences
Yan Ai, Wei Li, Dongyuan Zhao
Summary: 2D mesoporous materials, which combine the unique features of 2D and mesoporous structures, represent a new research direction in materials science. This perspective article highlights the latest progress of 2D mesoporous materials.
NATIONAL SCIENCE REVIEW
(2022)
Article
Chemistry, Multidisciplinary
Yan Zhang, Chenglin Yi, Wenhao Dong, Di Zheng, Yiqun Yang, Wei Li, Xiaozheng Duan, Dong Yang, Zhihong Nie
Summary: This study presents a general strategy for the scalable synthesis of highly monodisperse silica-based nanoparticles (SNPs) with sub-50 nm diameter. By utilizing copolymers as templates, ultrasmall single-chain nanoparticles are formed and used as seeds for the production of uniform SNPs. The composition and architecture of the copolymers play a crucial role in the formation of the seeds and the uniform deposition of silica. The study also demonstrates the ability to produce asymmetric Janus-like and dumbbell-like SNPs by tailoring the copolymer architecture.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Computer Science, Artificial Intelligence
Jinghua Zhang, Chen Li, Yimin Yin, Jiawei Zhang, Marcin Grzegorzek
Summary: Microorganisms are widely distributed in human daily living environment and play essential roles in environmental pollution control and health. Automatic microorganism image analysis faces challenges such as the need for robust algorithms and addressing image characteristic issues.
ARTIFICIAL INTELLIGENCE REVIEW
(2023)
Article
Engineering, Chemical
Xue Liu, Lin Li, Zhihao Zhou, Zhenkun Sun, Lunbo Duan
Summary: This study establishes a simple and low-cost strategy to introduce Mn into ilmenite oxygen carriers (OCs) and endow them with O-2 uncoupling behavior. The Mn-modified ilmenite ores can release oxygen at high temperatures when decreasing the oxygen partial pressure and can be restored in the air. This method can be used to produce ilmenite-based OCs with O-2 uncoupling behavior, which is expected to benefit the chemical looping combustion of fuels, promote fuel conversion, minimize OC loading, and reduce energy consumption.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Jun-Ye Zhang, Jiayu Liang, Bingbao Mei, Kun Lan, Lianhai Zu, Tiancong Zhao, Yuzhu Ma, Yan Chen, Zirui Lv, Yi Yang, Chuanghui Yu, Zhe Xu, Bao Yu Xia, Wei Li, Qinghong Yuan, Dongyuan Zhao
Summary: In this study, Ni/NiO@MoO3-x composite nanoarrays were synthesized through a moderate reduction strategy, which exhibited ultrahigh alkaline HER activity and higher stability compared to the traditional Pt/C catalyst.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Yan Yu, Yujun Xie, Pengfei Zhang, Wei Zhang, Wenxing Wang, Shuyu Zhang, Qiongrong Ou, Wei Li
Summary: The design of unique U-SiO2 dielectric support nanoparticles successfully regulates the surface plasmon resonance properties of small metallic nanoparticles. The formation of plasmonic hot spots leads to highly efficient visible-light-driven photocatalytic activity.
Article
Chemistry, Multidisciplinary
Hui Xu, Junliang Chen, Zhenghao Zhang, Chin-Te Hung, Jianping Yang, Wei Li
Summary: In this study, a highly efficient electrocatalytic reduction catalyst was prepared by encapsulating ultrasmall CuPd alloy nanoparticles. The catalyst exhibits high conversion efficiency, selectivity and stability. Experimental and theoretical results also reveal the unique selectivity of different catalysts for the reduction of NO3-.
ADVANCED MATERIALS
(2023)
Article
Biochemical Research Methods
Liang Peng, Huarong Peng, Wei Li, Dongyuan Zhao
Summary: Functional mesoporous carbonaceous nanomaterials with large pores have wide accessibility and can transport chemicals efficiently in various fields including biomedical applications, gas separation, catalysis, sensing, and energy storage and conversion. The assembly of monomicelles, composed of block copolymers/surfactants and precursor species, has been used to control the nanostructure and mesoporosity of carbonaceous nanomaterials. This method allows for a high degree of control over the final product's structure, making it possible to shape the nanomaterial into unique nanostructures that are otherwise difficult to synthesize using conventional templating methods.
Article
Chemistry, Physical
Yao Liu, Xiangyong Wu, Abdul Moeez, Zhi Peng, Yongyao Xia, Dongyuan Zhao, Jun Liu, Wei Li
Summary: This paper investigates the degradation mechanisms of NASICON-type sodium vanadium phosphate (NVP) cathode materials in sodium-ion batteries (SIBs) and proposes a solution to the capacity degradation caused by sodium loss. By developing a sodium-rich NVP cathode (Na4VP) and assembling full cells using Na-free anode and hard carbon anode, the authors were able to significantly improve the cycle life and energy density.
ADVANCED ENERGY MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Nitin Muttil, Saranya Jagadeesan, Arnab Chanda, Mikel Duke, Swadesh Kumar Singh
Summary: The storage of waste tyres poses significant environmental and health risks, especially when they are left untreated in stockpiles and landfills. By subjecting waste tyres to pyrolysis and activation, activated carbon can be produced and utilized for various applications, such as wastewater treatment, metal and dye removal, energy storage devices, and electrode materials. The use of waste tyres for activated carbon production is a sustainable alternative to conventional sources, supporting the concept of a circular economy.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Zhihao Zhou, Zhenkun Sun, Lunbo Duan
Summary: Significant developments in chemical looping technology have been made, allowing for efficient CO2 capture, fuel conversion, and CO2 utilization. Recently, the focus has shifted to the coupling of chemical looping CH4 conversion with CO2 utilization, as it offers a solution for co-converting the two most abundant anthropogenic greenhouse gases. This review provides an overview of the latest advances in chemical looping CH4 conversion coupled with CO2 utilization, including chemical looping reforming, chemical looping CO2 splitting, and calcium looping, while also addressing the challenges and future research directions.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Nitin Muttil, Saranya Jagadeesan, Arnab Chanda, Mikel Duke, Swadesh Kumar Singh
Summary: Globally, there is an increasing demand for green and sustainable solutions to address environmental issues. Waste tyres pose a significant environmental and health concern when they are dumped in landfills or stored in stockpiles. Reusing waste tyres is crucial due to the problems and damage they cause. This research focuses on characterising activated carbon produced from carbon black obtained through the pyrolysis of waste tyres. The activated carbon exhibited highly porous characteristics, making it a potential effective adsorbent material for applications like wastewater treatment.
ADVANCES IN MATERIALS AND PROCESSING TECHNOLOGIES
(2023)
Article
Engineering, Chemical
Zhenkun Sun, Negar Manafi Rasi, Dennis Y. Lu, Robert T. Symonds, Nader Mahinpey, Binchen Wu, Lunbo Duan
Summary: Chemical looping CH4 reforming is a highly promising solution for sustainable syngas production from gaseous feedstocks. However, the presence of CO2 reduces syngas generation when using iron-based oxygen carriers. This study proposes a novel strategy using ilmenite ore as both an oxygen carrier and a catalyst to mitigate the suppressing effect of CO2 and convert CH4 and CO2 into syngas simultaneously.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Energy & Fuels
Zhipeng Li, Hongjian Tang, Zhenkun Sun, Chao Chen, Lunbo Duan
Summary: In this work, the performance of three different structural configurations of CuFe2O4 as oxygen carriers in chemical looping combustion (CLC) process was compared based on density functional theory (DFT) calculations. The reactivity difference was attributed to their structural nuances, particularly the higher exposure of Fe atoms in configuration 3, which facilitated higher adsorption energies and lower dissociation energy barriers for CH4 and H-2. The Fe-Cu synergistic effect promoted the dissociation reaction of both CH4 and H-2, while CO directly oxidized to CO2 over the O sites. These findings are of significance for the design of high-performance CuFe2O4 oxygen carriers.
Article
Chemistry, Multidisciplinary
Chao Huang, Yu Wang, Rui Zhong, Zhenkun Sun, Yonghui Deng, Lunbo Duan
Summary: In this study, induction heating was used to enhance the catalytic performance of Suzuki-Miyaura cross-coupling reactions by employing conductive superparamagnetic microspheres loaded with Pd nanoparticles as heterogeneous catalysts. Compared to conventional joule heating, the reactions using induction heating exhibited better catalytic performance with higher conversion and yield. The improvement is mainly attributed to the localized heating effect and high efficiency of heat transfer.
CHINESE CHEMICAL LETTERS
(2023)
