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On the monolayer dispersion behavior of Co3O4 on HZSM-5 support: designing applicable

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1741-1754 doi: 10.1007/s11705-023-2332-x

Abstract: Based on monolayer dispersion theory, Co3O4/ZSM-5 catalysts with different loadingsCo3O4 can spontaneously disperse on HZSM-5 support with a monolayer dispersionreaction performance. 4% Co3O4/ZSM-5, the catalyst close to the monolayer dispersionIt is proposed the optimal Co3O4/ZSM-5 catalyst can be prepared by loading thecapacity amount of Co3O4 onto HZSM-5 support.

Keywords： Co3O4/ZSM-5     NOx-SCR by NH3     monolayer dispersionthreshold effect     surface acid sites     surface active O2– anions    

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Ultrasound-assisted co-precipitation synthesis of mesoporous Co3O4–CeO2 composite oxides for highly selective

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8,   Pages 1211-1223 doi: 10.1007/s11705-022-2145-3

Abstract: In this study, a Co3O4–CeO2 composite oxide catalyst was successfullyprepared through ultrasound-assisted co-precipitation.3+/Co2+ and Ce4+/Ce3+ redox pairs, than bulk CeO2 and/or Co3O4.3O4–CeO2.

Keywords： Co3O4–CeO2 composite oxides     cyclohexanone     cyclohexanol     ultrasonic-assistedco-precipitation     selective oxidation     solvent-free    

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Postsynthesis of hierarchical core/shell ZSM-5 as an efficient catalyst in ketalation and acetalization

Peng Luo, Yejun Guan, Hao Xu, Mingyuan He, Peng Wu

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 2,   Pages 258-266 doi: 10.1007/s11705-019-1878-0

Abstract: Hierarchical core/shell Zeolite Socony Mobil-five (ZSM-5) zeolite was hydrothermally postsythesized inThe silica and alumina species were firstly dissolved partially from the bulky ZSM-5 crystals and thennanosheets with the structure-directing effect of diammonium surfactant, attaching to the out-surface of ZSM-5Possessing the multiple mesopores and enlarged external surface area, the core/shell ZSM-5 zeolite exhibited-5.

Keywords： core/shell ZSM-5     in situ recrystallization     mesopore     ketalation and acetalization reactions    

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Hierarchical ZSM-5 zeolite with radial mesopores: Preparation, formation mechanism and application for

Darui Wang, Hongmin Sun, Wei Liu, Zhenhao Shen, Weimin Yang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 2,   Pages 248-257 doi: 10.1007/s11705-019-1853-9

Abstract: Hierarchical ZSM-5 zeolite with radial mesopores is controllably synthesized using piperidine in a NaOHIn this manner, radial mesopores are formed in the ZSM-5 zeolite with a maximal preservation of the microporesThe optimal hierarchical ZSM-5 zeolite, prepared with a molar ratio of piperidine to zeolite of 0.03,Compared to the parent zeolite, the hierarchical ZSM-5 zeolite possesses more accessible acid sites and

Keywords： hierarchical ZSM-5 zeolite     protective desilication     piperidine     radial mesopores     benzene alkylation    

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Enhancing the aromatic selectivity of cyclohexane aromatization by CO2 coupling

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1801-1808 doi: 10.1007/s11705-023-2325-9

Abstract: Herein, CO2 is introduced into the cyclohexane conversion process on the HZSM-5 zeolite, whichtoluene, xylene, and C9+) selectivity of 48.2% can be obtained at the conditions of 2.7 MPa (CO2), 450 °C, and 1.7 h−1, which is better than that without CO2 (aromaticaldehydes/ketones or ketene) would be formed during the cyclohexane conversion process in the presence of CO13C isotope labeling experimental results demonstrate that CO2 can enter into the

Keywords： aromatics     carbon dioxide     aromatization     coupling reaction     ZSM-5 zeolite    

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Alkaline modification of ZSM-5 catalysts for methanol aromatization: The effect of the alkaline concentration

Zhenhao Wei,Tengfei Xia,Minghui Liu,Qingsheng Cao,Yarong Xu,Kake Zhu,Xuedong Zhu

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 4,   Pages 450-460 doi: 10.1007/s11705-015-1542-2

Abstract: The effects of alkaline treatment on the physical properties of ZSM-5 catalysts and on their activitiesresult, the lifetime of the sample treated with 0.4 mol/L NaOH was almost five times that of the parent ZSM-5.

Keywords： aromatics     ZSM-5     alkaline treatment     dealumination     desilication     mesopores     methanol    

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Effect of hierarchical ZSM-5 zeolite crystal size on diffusion and catalytic performance of n-heptane

Shuman Xu, Xiaoxiao Zhang, Dangguo Cheng, Fengqiu Chen, Xiaohong Ren

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 780-789 doi: 10.1007/s11705-018-1733-8

Abstract: Hierarchical ZSM-5 zeolite aggregates with different sizes of nanocrystals were synthesized using differentamounts of the mesoporogen 3-aminopropyltriethoxysilane.Hierarchical ZSM-5 zeolite aggregates with smaller nanocrystals had better selectivity for light olefins

Keywords： hierarchical ZSM-5     crystal size     catalytic cracking     Thiele modulus     effectiveness factor    

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The effect of hierarchical single-crystal ZSM-5 zeolites with different Si/Al ratios on its pore structure

Yuexin Hou, Xiaoyun Li, Minghui Sun, Chaofan Li, Syed ul Hasnain Bakhtiar, Kunhao Lei, Shen Yu, Zhao Wang, Zhiyi Hu, Lihua Chen, Bao-Lian Su

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 269-278 doi: 10.1007/s11705-020-1948-3

Abstract: Hierarchical single-crystal ZSM-5 zeolites with different Si/Al ratios (Hier-ZSM-5- , where = 50, 100Hier-ZSM-5- exhibits improved mass transport properties, excellent mechanical and hydrothermal stabilityResults show that a decrease in the Si/Al ratio in hierarchical single-crystal ZSM-5 zeolites leads toThese poisoned Hier-ZSM-5- shows much higher catalytic conversion than the poisoned commercial ZSM-5faster diffusion inside the zeolite to contact with the acid sites in the micropores predominating in ZSM-5

Keywords： hierarchical zeolites     single crystalline     interconnected pores     improved diffusion performance     benzyl alcohol self-etherification reaction    

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Co-conversion of methanol and

Shumei Wei, Yarong Xu, Zhaoyang Jin, Xuedong Zhu

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 5,   Pages 783-792 doi: 10.1007/s11705-019-1868-2

Abstract: In this study, intergrown ZSM-5/ZSM-11 crystals were synthesized and their resulting catalytic performancewas investigated and compared to those of the isolated ZSM-5 and ZSM-11 zeolites.The physicochemical properties of ZSM-5/ZSM-11 intergrown zeolite were analyzed using X-ray diffractionCompared to the ZSM-5 and ZSM-11 zeolites, the ZSM-5/ZSM-11 zeolite exhibited the largest specific surfaceThe evaluation results showed that ZSM-5/ZSM-11 catalyst exhibited better catalytic reactivity than the

Keywords： ZSM-5/ZSM-11     methanol     n-hexane     cofeeding     aromatics    

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Dealumination and desilication for Al-rich HZSM-5 zeolite via steam-alkaline treatment and its application

Yuehua Fang, Fan Yang, Xuan He, Xuedong Zhu

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 543-553 doi: 10.1007/s11705-018-1778-8

Abstract: The hierarchical HZSM-5 was prepared via dealumination and desilication of commercial Al-rich HZSM-5,The results showed that partial framework of HZSM-5 was removed after steam treatment at 0.15 MPa, 500°C for 3 h.HZSM-5 with high specific surface area and much mesoporosity was obtained by the subsequent alkalineMethanol aromatization reaction was employed to evaluate the catalytic performance of treated HZSM-5

Keywords： steam treatment     alkaline treatment     hierarchical ZSM-5     methanol aromatization    

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Rh2O3/hexagonal CePO4 nanocatalysts for N2O decomposition

Huan Liu, Zhen Ma

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4,   Pages 586-593 doi: 10.1007/s11705-017-1659-6

Abstract: Rh(NO ) was then used as a precursor for the impregnation of Rh O onto these CePO materials.O than the Rh O supported on CePO nanorods.The stability of both catalysts as a function of time on stream was studied and the influence of the co-feed(CO , O , H O or O /H O) on the N O decomposition was also investigated.microscopy, hydrogen temperature-programmed reduction, oxygen temperature-programmed desorption, and CO

Keywords： Rh2O3     CePO4     N2O decomposition    

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Facile controlled synthesis of hierarchically structured mesoporous Li4Ti5O12/C/rGO composites as high-performance

Cehuang FU, Shuiyun SHEN, Ruofei WU, Xiaohui YAN, Guofeng XIA, Junliang ZHANG

Frontiers in Energy 2022, Volume 16, Issue 4,   Pages 607-612 doi: 10.1007/s11708-021-0798-0

Abstract: In this paper, a facile strategy is proposed to controllably synthesize mesoporous Li4Ti5O12/C nanocomposite embedded in graphene matrix as lithium-ion battery anode via theco-assembly of Li4Ti5O12 (LTO) precursor, GO, and phenolic resin.

Keywords： Li4Ti5O12     phenolic-resin-based carbon     mesoporous composite     graphene    

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Complete oxidation of methane on CoO-SnO catalysts

Xingfu TANG , Jiming HAO , Junhua LI ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3,   Pages 265-270 doi: 10.1007/s11783-009-0019-2

Abstract: The CoO-SnO with a molar ratio of Co/(Co+Sn) at 0.75 exhibited the highest catalytic activity among all

Keywords： Co3O4-SnO2     complete oxidation     methane (CH4)    

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Effect of Cu-ZSM-5 catalysts with different CuO particle size on selective catalytic oxidation of N,N-Dimethylformamide

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 10, doi: 10.1007/s11783-022-1557-0

Abstract:

● A series of Cu-ZSM-5 catalysts were tested for DMF selective catalytic

Keywords： N     N-Dimethylformamide     Selective catalytic oxidation     Cu-ZSM-5     CuO particle size    

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Pd/Fe3O4 supported on bio-waste derived cellulosic-carbon as a nanocatalyst for C–C coupling and electrocatalytic

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 10,   Pages 1514-1525 doi: 10.1007/s11705-022-2158-y

Abstract: Under mild reaction conditions, the Pd/Fe3O4@C magnetic nanocatalyst demonstratedAlso, the Pd/Fe3O4@C magnetic nanocatalyst exhibited excellent catalytic activityAlso, we explored the use of Pd/Fe3O4@C magnetic nanocatalyst as an electrocatalystInterestingly, the Pd/Fe3O4@C magnetic nanocatalyst exhibited better electrochemicalactivity compared to bare carbon and magnetite (Fe3O4 nanoparticles) with an overpotential

Keywords： bio-waste     cellulosic-carbon     Pd/Fe3O4     Hiyama cross-coupling     hydrogen evolution    

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Title Author Date Type Operation

On the monolayer dispersion behavior of Co3O4 on HZSM-5 support: designing applicable

Journal Article

Ultrasound-assisted co-precipitation synthesis of mesoporous Co3O4–CeO2 composite oxides for highly selective

Journal Article

Postsynthesis of hierarchical core/shell ZSM-5 as an efficient catalyst in ketalation and acetalization

Peng Luo, Yejun Guan, Hao Xu, Mingyuan He, Peng Wu

Journal Article

Hierarchical ZSM-5 zeolite with radial mesopores: Preparation, formation mechanism and application for

Darui Wang, Hongmin Sun, Wei Liu, Zhenhao Shen, Weimin Yang

Journal Article

Enhancing the aromatic selectivity of cyclohexane aromatization by CO2 coupling

Journal Article

Alkaline modification of ZSM-5 catalysts for methanol aromatization: The effect of the alkaline concentration

Zhenhao Wei,Tengfei Xia,Minghui Liu,Qingsheng Cao,Yarong Xu,Kake Zhu,Xuedong Zhu

Journal Article

Effect of hierarchical ZSM-5 zeolite crystal size on diffusion and catalytic performance of n-heptane

Shuman Xu, Xiaoxiao Zhang, Dangguo Cheng, Fengqiu Chen, Xiaohong Ren

Journal Article

The effect of hierarchical single-crystal ZSM-5 zeolites with different Si/Al ratios on its pore structure

Yuexin Hou, Xiaoyun Li, Minghui Sun, Chaofan Li, Syed ul Hasnain Bakhtiar, Kunhao Lei, Shen Yu, Zhao Wang, Zhiyi Hu, Lihua Chen, Bao-Lian Su

Journal Article

Co-conversion of methanol and

Shumei Wei, Yarong Xu, Zhaoyang Jin, Xuedong Zhu

Journal Article

Dealumination and desilication for Al-rich HZSM-5 zeolite via steam-alkaline treatment and its application

Yuehua Fang, Fan Yang, Xuan He, Xuedong Zhu

Journal Article

Rh2O3/hexagonal CePO4 nanocatalysts for N2O decomposition

Huan Liu, Zhen Ma

Journal Article

Facile controlled synthesis of hierarchically structured mesoporous Li4Ti5O12/C/rGO composites as high-performance

Cehuang FU, Shuiyun SHEN, Ruofei WU, Xiaohui YAN, Guofeng XIA, Junliang ZHANG

Journal Article

Complete oxidation of methane on CoO-SnO catalysts

Xingfu TANG , Jiming HAO , Junhua LI ,

Journal Article

Effect of Cu-ZSM-5 catalysts with different CuO particle size on selective catalytic oxidation of N,N-Dimethylformamide

Journal Article

Pd/Fe3O4 supported on bio-waste derived cellulosic-carbon as a nanocatalyst for C–C coupling and electrocatalytic

Journal Article