Wenliang Zhu

Dalian Institute of Chemical Physics

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Zhongmin Liu

University of Chinese Academy of Sciences

Youming Ni

Dalian Institute of Chemical Physics

Hongchao Liu

University of Macau

Xudong Fang

Chinese Academy of Sciences

Ziyang Chen

Northwestern Polytechnical University

Zhao‐Peng Liu

Shenzhen University

Zhiyang Chen

Beijing Institute of Technology

Shiping Liu

Dalian National Laboratory for Clean Energy

Lei Shi

Shenyang University of Chemical Technology

Xiangnong Ding

Ji Hua Laboratory

Cooperative Institutions

Chinese Academy of Sciences

Dalian Institute of Chemical Physics

Dalian National Laboratory for Clean Energy

University of Chinese Academy of Sciences

Collaborative Innovation Center of Chemistry for Energy Materials

Dalian University

Tsinghua University

Nanjing University of Science and Technology

Peking University

Sichuan University

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Enhanced oxygen reduction activity on surface-decorated perovskite La 0.6 Ni 0.4 FeO 3 cathode for solid oxide fuel cells

Electrochimica Acta (2015)

Xifeng Ding Wenliang Zhu Guixiang Hua Jianfei Li Zhuangchun Wu

Open-circuit voltage

10.1016/j.electacta.2015.02.084

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Citations (41)

Cyclic Oxygenate-Based Deactivation Mechanism in Dimethyl Ether Carbonylation Reaction over a Pyridine-Modified H-MOR Catalyst

ACS Catalysis (2023)

Mingguan Xie Xudong Fang Hongchao Liu Zhiyang Chen Bin Li

The carbonylation of dimethyl ether (DME) over zeolite catalysts breaks through the traditional concept of metal-catalyzed carbonylation and has attracted extensive attention as a critical route for ethanol synthesis. However, the deactivation mechanism during DME carbonylation is complicated and controversial, resulting in great challenges for developing efficient catalysts. Herein, we discovered a catalyst deactivation pathway induced by cyclic oxygenates over the pyridine-modified H-MOR (H-MOR-py) catalyst, which is completely distinct from the classical aromatic-based deactivation route. As the key deactivated species, cyclic oxygenates are generated by the conversion of excessive acetyl groups to ketenes in the eight-membered ring (8-MR) side pockets and further transformation in the 12-MR channel of the H-MOR-py catalyst. A strategy to improve catalyst stability is proposed by rapidly consuming acetyl groups to inhibit the formation of cyclic oxygenates. This study would provide inspiration for DME carbonylation over zeolite catalysts.

Oxygenate

Carbonylation

Dimethyl ether

10.1021/acscatal.3c04344

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Citations (5)

Inside Back Cover: Highly Enhanced Aromatics Selectivity by Coupling of Chloromethane and Carbon Monoxide over H‐ZSM‐5 (Angew. Chem. Int. Ed. 13/2022)

Angewandte Chemie International Edition (2022)

Xudong Fang Hongchao Liu Zhiyang Chen Zhao‐Peng Liu Xiangnong Ding

The coupling of CH3Cl with CO over H-zeolites is an efficient reaction strategy for the transformation of methane into aromatics, which ensures the sustainable development of natural gas in an environmental pathway. In their Research Article (e202114953), Hongchao Liu, Wenliang Zhu, Zhongmin Liu, and co-workers report that high aromatics and BTX (benzene, toluene, and xylene) selectivity can be achieved with complete conversion of CH3Cl over HZSM-5, following a new aromatization mechanism.

Aromatization

Chloromethane

ZSM-5

10.1002/anie.202202624

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Highly Enhanced Aromatics Selectivity by Coupling of Chloromethane and Carbon Monoxide over H‐ZSM‐5

Angewandte Chemie (2022)

Xudong Fang Hongchao Liu Ziyang Chen Zhao‐Peng Liu Xiangnong Ding

Abstract The transformation of methane into high value‐added chemicals such as aromatics provides a more desired approach towards sustainable chemistry but remains a critical challenge due to the low selectivity of aromatics and poor stability. Herein, we first report a coupling reaction of CH 3 Cl and CO (CCTA) based on methane conversion, which achieves extremely high aromatics selectivity (82.2 %) with the selectivity of BTX up to ca. 60 % over HZSM‐5. The promoting effects have been demonstrated on other zeolites especially 10‐membered rings (10 MR) zeolites. Multiple characterizations show that 2,3‐dimethyl‐2‐cyclopentene‐1‐one (DMCPO) is generated from acetyl groups and olefins. Furthermore, isotopic labeling analysis confirms that CO is inserted into the DMCPO and aromatics rings. A new aromatization mechanism is proposed, including the formation of the above intermediates, which conspicuously weakens the hydrogen transfer reaction, leading to a considerable increase of aromatics selectivity and a dramatic drop in alkanes.

Chloromethane

Aromatization

10.1002/ange.202114953

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Citations (3)

Selective Transformation of Dimethyl Ether into Small Molecular Hydrocarbons Over Large-pore Beta Zeolite

Catalysis Letters (2007)

Wenliang Zhu Xiaohong Li Hiroshi Kaneko Kaoru Fujimoto

Dimethyl ether

BETA (programming language)

10.1007/s10562-007-9254-y

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Citations (8)

Conversion of CO2 and H2 into propane over InZrO and SSZ-13 composite catalyst

Journal of Energy Chemistry (2020)

Zhao‐Peng Liu Youming Ni Tantan Sun Wenliang Zhu Zhongmin Liu

Propane

Carbon fibers

10.1016/j.jechem.2020.04.069

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Citations (24)

High carbon utilization for CO2 conversion with chloromethane to aromatics over acidic zeolite catalyst

Chem Catalysis (2023)

Xudong Fang Bin Li Hongchao Liu Mingguan Xie Ziyang Chen

Chloromethane

Carbon fibers

10.1016/j.checat.2023.100689

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Citations (5)

Highly converting syngas to lower olefins over a dual-bed catalyst

Journal of Energy Chemistry (2020)

Zhao‐Peng Liu Youming Ni Xudong Fang Wenliang Zhu Zhongmin Liu

10.1016/j.jechem.2020.10.050

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Citations (10)

Achieving high conversion of syngas to aromatics

Journal of Energy Chemistry (2021)

Yi Fu Youming Ni Ziyang Chen Wenliang Zhu Zhongmin Liu

10.1016/j.jechem.2021.03.044

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Citations (24)

Crystal size sensitivity of HMOR zeolite in dimethyl ether carbonylation

Catalysis Communications (2021)

Fuli Wen Xiangnong Ding Xudong Fang Hongchao Liu Wenliang Zhu

The effect of crystal size of HMOR from micro size to 50 nm, with the apparent similar acid site density, on catalytic performance for the dimethyl ether (DME) carbonylation was investigated. The crystal size of HMOR is sensitive to the deactivation rate of DME carbonylation reaction, and the higher stability around 200 nm can be achieved. The characterization studies reveal that the diffusions of MA product play a key role during the induction and deactivation period in DME carbonylation. These will be helpful for guiding the large-scale synthesis of mordenite zeolites catalysts with high efficiencies for DME carbonylation.

Carbonylation

Dimethyl ether

Mordenite

Crystal (programming language)

10.1016/j.catcom.2021.106309

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Citations (7)