Article
Engineering, Environmental
Ling Zhang, Rui Tu, Guoqing Ren, Zhen Li, Shengliang Zhai, Yuchun Xu, Tie Yu
Summary: Optimizing propene selectivity, propene/ethene (P/E) ratio, and catalytic stability in methanol-to-olefin (MTO) research is challenging. A strategy of controlling the acidity of MFI-zeolites through incorporating gallium(III) centers into Silicalite-1 (S-1) is reported. The resultant GaS-1(1.3) zeolite exhibits remarkable propene selectivity, P/E ratio, and catalytic stability, promoting the application of zeolites in sustainable manufacturing of light olefins.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Hitoshi Matsubara, Kana Yamamoto, Etsushi Tsuji, Kazu Okumura, Koshiro Nakamura, Satoshi Suganuma, Naonobu Katada
Summary: The study focused on the crystallographic position and acidic properties of Co species in MFI zeolite for the methylation of benzene with methane. It was found that Co2+ predominantly located at the alpha site showed strong catalytic activity for the reaction.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Applied
Xinyu Li, Jose Andres Hernandez Gaitan, Shinya Kokuryo, Tomoka Sumi, Haruna Kitamura, Koji Miyake, Yoshiaki Uchida, Norikazu Nishiyama
Summary: Hierarchical zeolites with mesopores only on external surfaces were synthesized via an alkaline treatment for organic structure-directing agents (OSDA)-occluded zeolites. These zeolites exhibited higher catalytic activity and improved mass transfer due to the presence of mesopores on external surfaces. They also showed higher hydrothermal stability compared to conventional hierarchical zeolites.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Environmental
Umer Khalil, Zhendong Liu, Ce Peng, Naomichi Hikichi, Toru Wakihara, Javier Garcia-Martinez, Tatsuya Okubo, Sankar Bhattacharya
Summary: Introducing intracrystalline mesoporosity to zeolites through surfactant-templating can be achieved quickly and effectively, enhancing their catalytic performance.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Nam Sun Kim, Muhammad Numan, Sung Chan Nam, Sang-Eon Park, Changbum Jo
Summary: The breakthrough time of MFI zeolite could be significantly improved by reducing the crystal thickness to a single-unit-cell dimension, resulting in easy access of p-xylene to micropores. Open mesopores did not slow down the mass transfer of p-xylene into zeolite adsorbents, while constricted mesopores did. Mesopore opening is crucial for the desorption behavior of p-xylene, with facilitated diffusion through mesoporous channels allowing for desorption at lower temperatures.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Multidisciplinary Sciences
Patrick Loch, Dominik Schuchardt, Gerardo Algara-Siller, Paul Markus, Katharina Ottermann, Sabine Rosenfeldt, Thomas Lunkenbein, Wilhelm Schwieger, Georg Papastavrou, Josef Breu
Summary: In order to fully utilize layered materials for various applications, they need to be delaminated into functional nanosheets. Delamination via repulsive osmotic swelling, which is driven by thermodynamics, allows obtaining nematic liquid crystals consisting solely of single-layer nanosheets. However, this mechanism has been limited to only a few compounds. This study presents a scalable, eco-friendly, and complete delamination method, extending this mechanism to the class of layered zeolites.
Article
Chemistry, Multidisciplinary
Ye Ma, Xiaomin Tang, Junyi Hu, Yanhang Ma, Wei Chen, Zhiqiang Liu, Shichao Han, Cheng Xu, Qinming Wu, Anmin Zheng, Longfeng Zhu, Xiangju Meng, Feng-Shou Xiao
Summary: This study presents the successful synthesis of zeolite nanosheets with excellent mass transfer using a small organic template. The nanosheets exhibit good crystallinity, large surface area, and unique morphology, and show higher propylene selectivity and longer reaction lifetime in the methanol-to-propylene conversion reaction compared to conventional zeolites.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Applied
Phuong T. Ngo, Phuong N. X. Vo, Loc P. Trinh-Le, Duc T. Pham, Phuong D. Phan, Chung Cao, Tri Tran, Thuy N. Luong, Quan L. M. Ha, Nguyen Le-Phuc
Summary: Detemplation of tetrapropylammonium ZSM-5 zeolites was achieved through e-beam irradiation, leading to different hierarchical structures in fully detemplated zeolites with varying Si/Al molar ratios.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Bolong Jiang, Tianhan Zhu, Nan Jiang, Mingyue Gong, Gang Yang, Feng Li, Hua Song, Tianzhen Hao
Summary: The novel meso-AgCeY zeolite, with introduced mesopores and multiple adsorption metal ions, effectively suppressed diffusion limitations of sulfur compounds and showed high ADS performance through pi-complexation and sulfur-metal interactions.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Biochemistry & Molecular Biology
Syuhei Yamaguchi, Yuito Ishida, Hitomu Koga, Hidenori Yahiro
Summary: In this study, mesoporous Y-type zeolite was successfully prepared by an acid and base treatment of commercial Y-type zeolite. Iron complexes were encapsulated into the mesoporous zeolite and characterized with different iron contents. The results showed that the mesoporous Y-type zeolite catalyst exhibited higher activity in the oxidation of benzene with H2O2, and the catalytic activity increased with increasing iron complex content and mesopore volume.
Article
Engineering, Chemical
Meng-Nan Liu, Zhi-Xia Xie, Qun-Xing Luo, Jianbo Zhang, Huiyong Chen, Long Xu, Ming Sun, Xiaoxun Ma, Qing-Qing Hao
Summary: In this study, we report a facile method for the preparation of nanosized mordenite (MOR) crystals and nanoplatelets. The introduction of hexamethyleneimine (HMI) affected the morphology of MOR and the distribution of Bro''nsted acid sites. Nanosized MOR crystals prepared without HMI exhibited the highest catalytic activity due to their shorter diffusion pathway and enriched Bro''nsted acid sites.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Aafaq Ur Rehman, Devipriyanka Arepalli, Syed Fakhar Alam, Min-Zy Kim, Jungkyu Choi, Churl Hee Cho
Summary: In this study, polyvinylpyrrolidone (PVP) was introduced as an exfoliation agent and dispersant to successfully exfoliate multi-layered interlocked silicalite-1 zeolite nanosheets into large lateral sizes. The strong penetration of PVP into the multi-lamellar nanosheets, assisted by sonication and mild milling, contributed to the expansion of the distance between layers and decreased interactions. The stability of the exfoliated nanosheets in organic solvents was confirmed, with good dispersion and stability in n-butanol for 30 days.
Review
Chemistry, Applied
Yichuan Li, Guofu Zhu, Yu Wang, Yongming Chai, Chenguang Liu
Summary: Oriented MFI zeolite membranes, compared with other orientations, can effectively improve the molecular transmission rate and are widely used in mixture separation and catalysis. However, twinning easily occurs during membrane preparation and controlling membrane orientation is challenging.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Manoj Ravi, Vitaly L. Sushkevich, Jeroen A. van Bokhoven
Summary: The Lewis acidic aluminum in zeolites can be transformed into octahedrally coordinated aluminum, which serves as the precursor of Lewis acid sites. These Lewis acid sites preferentially locate in the pore structure of mordenite, particularly in the side-pockets. By reverting the octahedrally coordinated aluminum back to a tetrahedral geometry, the corresponding Bronsted acid sites are restored, showing a reversible switch between Lewis and Bronsted acidity.
Article
Chemistry, Applied
Kai Gao, Jerrik Mielby, Soren Kegnaes
Summary: The study demonstrates that Zn-containing MFI zeolites are highly active and selective catalysts for the catalytic dehydrogenation of ethanol. The best catalyst, comprising 5 wt % Zn on Silicalite-1 zeolite, achieves a selectivity of 94.5% towards acetaldehyde at 400 degrees C.
Article
Chemistry, Physical
Jaeha Lee, YoungSeok Ryou, Sung June Cho, Hyokyoung Lee, Chang Hwan Kim, Do Heui Kim
APPLIED CATALYSIS B-ENVIRONMENTAL
(2018)
Article
Chemistry, Physical
Sabina Yasmin, Sung Cho, Seungwon Jeon
APPLIED SURFACE SCIENCE
(2018)
Article
Chemistry, Applied
Wonsuk Lee, Taehee Lee, Hoi-Gu Jang, Sung June Cho, Jungkyu Choi, Kyoung-Su Ha
Article
Chemistry, Applied
Soon Hee Park, Seung Gwan Lee, Sung June Cho
Article
Chemistry, Multidisciplinary
Aram Jeon, Jintaek Gong, Jun Kyun Oh, Sunbum Kwon, Wonchul Lee, Sang Ouk Kim, Sung June Cho, Hee-Seung Lee
CHEMISTRY-AN ASIAN JOURNAL
(2019)
Article
Energy & Fuels
Jungmin Yu, Seung Wook Baek, Sung June Cho
Article
Chemistry, Applied
Priyanka Verma, Kohsuke Mori, Yasutaka Kuwahara, Sung June Cho, Hiromi Yamashita
Article
Thermodynamics
Jerin John, Purushothaman Nandagopalan, Seung Wook Baek, Sung June Cho
COMBUSTION AND FLAME
(2020)
Article
Chemistry, Physical
Hyungwon Ham, Hyun Seung Jung, Hyo Seok Kim, Jihyeon Kim, Sung June Cho, Won Bo Lee, Myung-June Park, Jong Wook Bae
Article
Nanoscience & Nanotechnology
Su-Kyung Lee, Hongjun Park, Ji Woong Yoon, Kiwoong Kim, Sung June Cho, Guillaume Maurin, Ryong Ryoo, Jong-San Chang
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Applied
Min Sik Kim, Ki Hun Park, Sung June Cho, Eun Duck Park
Summary: The study found that the catalyst preparation method has a significant impact on the catalytic activity of Fe-ZSM-5 for the partial oxidation of methane with H2O2 in an aqueous phase. The aqueous phase ion-exchange method demonstrated the best results, producing isolated or oligonuclear extra-framework Fe species with the highest catalytic activity.
Article
Chemistry, Physical
Eunhee Jang, Jeong Hyeon Lee, Sungwon Hong, Yanghwan Jeong, Jin Chul Kim, Dongjae Kim, Hionsuck Baik, Eunjoo Kim, Nakwon Choi, Jaewook Nam, Sung June Cho, Sang Kyu Kwak, Jungkyu Choi
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Materials Science, Multidisciplinary
Ikue Abe, Mitsuo Hara, Takahiro Seki, Sung June Cho, Masaki Shimizu, Kazunori Matsuura, Hae-Kap Cheong, Jin Young Kim, Jihun Oh, Jaehoon Jung, Mina Han
JOURNAL OF MATERIALS CHEMISTRY C
(2019)
Article
Chemistry, Physical
Jaeha Lee, YoungSeok Ryou, Sungha Hwang, Yongwoo Kim, Sung June Cho, Hyokyoung Lee, Chang Hwan Kim, Do Heui Kim
CATALYSIS SCIENCE & TECHNOLOGY
(2019)
Article
Engineering, Chemical
Sung Jun Park, Hoi-Gu Jang, Sung June Cho
KOREAN CHEMICAL ENGINEERING RESEARCH
(2018)
Article
Chemistry, Physical
Bolun Yu, Denan Li, Qianqian Zhu, Shufan Yao, Lifeng Zhang, Yanshuo Li, Zhenxin Zhang
Summary: This study successfully improved the catalytic activity of a zeolitic octahedral metal oxide by incorporating a single zinc species into its micropore. The zinc incorporation achieved a high ethane conversion rate and ethylene selectivity. Mechanism study showed that the isolated zinc site played a crucial role in activating oxygen and ethane, as well as stabilizing intermediates and transition states.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Ruoqi Liu, Hao Fei, Jian Wang, Ting Guo, Fangyang Liu, Zhuangzhi Wu, Dezhi Wang
Summary: This work successfully synthesized a high-performing S-enriched MoS2 catalyst for electrocatalytic nitrogen reduction reaction (NRR), demonstrating high activity and selectivity. The synergistic effect of the 1T phase and bridging S22- species was shown to play a positive role in NRR performances, and DFT calculations revealed the mechanism behind the improved performance.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Pan Xia, Lele Zhao, Xi Chen, Zhihong Ye, Zhihong Zheng, Qiang He, Ignasi Sires
Summary: This study presents a modified gas-diffusion electrode (GDE) for highly efficient and stable H2O2 electrosynthesis by using trace polymethylhydrosiloxane (PMHS). DFT calculations provide an in-depth understanding of the roles of PMHS functional groups.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Kwangchol Ri, Songsik Pak, Dunyu Sun, Qiang Zhong, Shaogui Yang, Songil Sin, Leliang Wu, Yue Sun, Hui Cao, Chunxiao Han, Chenmin Xu, Yazi Liu, Huan He, Shiyin Li, Cheng Sun
Summary: Different B-doped rGO catalysts were synthesized and their 2e- oxygen reduction reaction (ORR) performance was investigated. It was found that the 2e- ORR selectivity of B-doped rGO was influenced by the B content and oxygen mass transfer conditions. The synthesized catalyst exhibited high 2e- ORR selectivity and was capable of degrading organic pollutants continuously.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Li Lv, Lin Lei, Qi-Wen Chen, Cheng-Li Yin, Huiqing Fan, Jian-Ping Zhou
Summary: Monoclinic phase La2Ti2O7 and orthorhombic phase Bi4Ti3O12 are widely used in photocatalysis due to their layered crystal structure. The electronic structures of these phases play a crucial role in their photocatalytic activity. Heat treatment in a nitrogen atmosphere introduces more oxygen vacancies into the S-scheme heterojunction, leading to enhanced NO removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Choe Earn Choong, Minhee Kim, Jun Sup Lim, Young June Hong, Geon Joon Lee, Keun Hwa Chae, In Wook Nah, Yeomin Yoon, Eun Ha Choi, Min Jang
Summary: In this study, the synergistic effect between argon-plasma-system (AP) and catalysts in promoting the production of reactive species for water remediation was investigated. By altering the oxygen vacancies concentration of CeO2/Bi2O3 catalyst, the production of hydrated electrons was stimulated for PFOA removal. The results showed that the built-in electric field in the Bi/Ce0.43 interface enhanced electron migration and eaq- generation, leading to improved PFOA removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yushan Wu, Di Xu, Yanfei Xu, Xin Tian, Mingyue Ding
Summary: Efficient synthesis of primary amines from carbonyl compounds was achieved via reductive amination using Ru@NC-Al2O3 as a catalyst, exhibiting high activity and selectivity under mild conditions.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yilan Jiang, Peifang Wang, Tingyue Chen, Keyi Gao, Yiran Xiong, Yin Lu, Dionysios D. Dionysiou, Dawei Wang
Summary: By controlling the content of Co and Ni in Co1-xNixFe2O4, the production of O-1(2) from H2O2 can be regulated. NiFe2O4, with the lowest lattice distortion degree, can efficiently produce O-1(2) as the dominant reactive oxygen species. The system also exhibits significant resistance to water matrix interference.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng
Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Jia-Cheng E. Yang, Min -Ping Zhu, Daqin Guan, Baoling Yuan, Darren Delai Sun, Chenghua Sun, Ming-Lai Fu
Summary: This study successfully modulated the electron configuration and spin state of millimetric metal catalysts by adjusting the support curvature radius. The electronic structure-oriented spin catalysis was found to affect the degradation of pollutants, providing new insights for the design and production of highly active, reusable, and stable catalysts.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Tao Zhong, Su Tang, Wenbin Huang, Wei Liu, Huinan Zhao, Lingling Hu, Shuanghong Tian, Chun He
Summary: In this study, a highly efficient photocatalyst for the elimination of CH3SH was developed by engineering different crystal facets and coupling them with PHI. Cu (111)/PHI exhibited the highest elimination efficiency and showed good stability and reusability. The enhanced surface electron pump effect and effective adsorption mechanisms were revealed through comprehensive characterizations and DFT calculations.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Feifei Yang, Tianyu Zhang, Jiankang Zhao, Wei Zhou, Nicole J. Libretto, Jeffrey T. Miller
Summary: A Ni3Sn intermetallic nano particle was found to have geometrically isolated Ni sites that could selectively cleave C-O bonds in biomass derivatives. This nano particle showed high activity and selectivity towards 2-methylfuran, unlike Ni nanoparticles that produced other unwanted products derived from the aromatic rings.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Lulu Qiao, Di Liu, Anquan Zhu, Jinxian Feng, Pengfei Zhou, Chunfa Liu, Kar Wei Ng, Hui Pan
Summary: This study reveals that surface evolution plays a crucial role in enhancing the electrocatalytic performance of transition metal oxides for electrochemical nitrate reduction reaction (e-NO3RR). Incorporating nickel into Co3O4 can promote surface reconstruction and improve the adsorption of intermediates and reduce energy barriers, leading to enhanced catalytic performance. The reconstructed cobalt-nickel hydroxides (CoyNi1_y(OH)2) on the catalyst's surface serve as the active phase.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Xinyu Song, Yang Shi, Zelin Wu, Bingkun Huang, Xinhao Wang, Heng Zhang, Peng Zhou, Wen Liu, Zhicheng Pan, Zhaokun Xiong, Bo Lai
Summary: This study explores the discriminative activities and mechanisms for activation of O-O bond in peroxy compounds via single-atom catalysts (SACs) with higher coordination numbers (M-N5). The atomic catalyst (Fe-SAC) with Fe-N5 as the active center was constructed, effectively activating peroxymonosulfate (PMS), peroxydisulfate (PDS), and hydrogen peroxide (H2O2). The study demonstrates the degradation efficiencies of acyclovir are related to the O-O bond length in different peroxy compounds, and reveals the discriminative mechanisms for activation of O-O bond in different Fenton-like systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Yangzhuo He, Hong Qin, Ziwei Wang, Han Wang, Yuan Zhu, Chengyun Zhou, Ying Zeng, Yicheng Li, Piao Xu, Guangming Zeng
Summary: A dual-metal-organic framework (MOF) assisted strategy was proposed to construct a magnetic Fe-Mn oxycarbide anchored on N-doped carbon for peroxymonosulfate (PMS) activation. The FeMn@NC-800 catalyst exhibited superior activity with almost 100% degradation of sulfamethazine (SMZ) in 30 minutes. The study provided insights for the rational design of high-performance heterogeneous catalysts and proposed a novel nonradical-based catalytic oxidation for environmental cleaning.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)