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| 1 | Enhanced aromatic selectivity by the sheet-like ZSM-5 in syngas conversion显示文摘Aromatics are important basic chemicals. However, direct conversion of syngas via the conventional Fischer-Tropsch synthesis produces little aromatics. We presented herein that a bifunctional composite of ZSM-5 in combination with Zn Cr Oxcatalyzes syngas conversion to aromatics. Particularly, ZSM-5 crystals with a sheet-like morphology can enhance significantly the aromatization activity. The lower length ratio of the b/a axes of the crystals, the more aromatics form but without influencing the selectivity of small molecules such as CH4 and C2–C4. Since the acid properties and the Al chemical environment were not altered while the morphology changed, the enhanced aromatic selectivity is likely attributed to the favored diffusion of aromatics in these sheet-like crystals. | Junhao Yang Ke Gong Dengyun Miao Feng Jiao Xiulian Pan Xiangju Meng Fengshou Xiao Xinhe Bao | 2019 | Journal of Energy Chemistry2019,28,8: | 10 |
| 2 | Selective catalytic reduction of NO_(x) with NH_(3):opportunities and challenges of Cu-based small-pore zeolites显示文摘Zeolites,as efficient and stable catalysts,are widely used in the environmental catalysis field.Typically,Cu-SSZ-13 with small-pore structure shows excellent catalytic activity for selective catalytic reduction of NO_(x) with ammonia(NH_(3)-SCR)as well as high hydrothermal stability.This review summarizes major advances in Cu-SSZ-13 applied to the NH_(3)-SCR reaction,including the state of copper species,standard and fast SCR reaction mechanism,hydrothermal deactivation mechanism,poisoning resistance and synthetic methodology.The review gives a valuable summary of new insights into the matching between SCR catalyst design principles and the characteristics of Cu^(2+)-exchanged zeolitic catalysts,highlighting the significant opportunity presented by zeolite-based catalysts.Principles for designing zeolites with excellent NH_(3)-SCR performance and hydrothermal stability are proposed.On the basis of these principles,more hydrothermally stable Cu-AEI and Cu-LTA zeolites are elaborated as well as other alternative zeolites applied to NH_(3)-SCR.Finally,we call attention to the challenges facing Cu-based small-pore zeolites that still need to be addressed. | Yulong Shan Jinpeng Du Yan Zhang Wenpo Shan Xiaoyan Shi Yunbo Yu Runduo Zhang Xiangju Meng Feng-Shou Xiao Hong He | 2021 | National Science Review2021,8,10: | 9 |
| 3 | Mesoporous zeolites as efficient catalysts for oil refining and natural gas conversion显示文摘 | Jie ZHU Xiangju MENG Fengshou XIAO | 2013 | Frontiers of Chemical Science and Engineering2013,7,2: | 8 |
| 4 | Selective conversion of syngas to propane over ZnCrO_x-SSZ-39 OX-ZEO catalysts显示文摘Oxide-Zeolite(OX-ZEO) bifunctional catalyst design concept has been exemplified in several processes to direct conversion syngas to value-added chemicals and fuels such as mixed light olefins, ethylene, aromatics and gasoline.Herein we demonstrate that the product can be steered toward liquefied petroleum gas(LPG) with a selectivity up to 89% in hydrocarbons especially propane selectivity reaching 80% at CO conversion of 63% using ZnCrOx-H-SSZ-39 catalyst.Interestingly, the quantity of the acid sites of SSZ-39 does not influence obviously the hydrocarbon distribution but the strength is crucial for selective formation of propane.This finding provides an alternative route of LPG synthesis from a variety of carbon resources via syngas. | Gen Li Feng Jiao Dengyun Miao Yong Wang Xiulian Pan Toshiyuki Yokoi Xiangju Meng Feng-Shou Xiao Andrei-Nicolae Parvulescu Ulrich Müller Xinhe Bao | 2019 | Journal of Energy Chemistry2019,28,9: | 6 |
| 5 | A Novel CdS/g-C3N4 Composite Photocatalyst: Preparation, Characterization and Photocatalytic Performance with Different Reaction Solvents under Visible Light Irradiation显示文摘 | Xiangju Ye Xia Dai Sugang Meng Xianliang Fu Shifu Chen | 2017 | Chinese Journal of Chemistry2017,35,2: | 6 |
| 6 | Solvent-free synthesis of zeolite catalysts显示文摘The most used method for preparation of zeolites is hydrothermal synthesis from silicate or aluminosilicate gels at temperatures in the range of 60–200°C.Excess water used in the industrial process results in several issues,including high autogeneous pressure,low efficiency,pollution,etc.To solve these problems,several strategies have been developed.This review describes the solvent-free synthesis of zeolites.The combination of solvent-free synthesis and organotemplate-free synthesis can open the pathway to a highly sustainable zeolite synthesis protocol in industry. | Xiangju Meng Qinming Wu Fang Chen Feng-Shou Xiao | 2015 | Science China Chemistry2015,58,1: | 5 |
| 7 | Efficient conversion of fructose to 5-hydroxymethylfurfural over sulfated porous carbon catalyst显示文摘Sulfated porous carbon (PC-SO3H) catalyst was successfully synthesized from one-pot treatment of porous polydivinylbenzene in H2SO4 at 250 C, which exhibited very good catalytic performances in the production of 5-hydroxymethylfurfural from fructose. | Liang Wang Jian Zhang Longfeng Zhu Xiangju Meng Feng-Shou Xiao | 2013 | Journal of Energy Chemistry2013,22,2: | 4 |
| 8 | Sustainable Synthesis of Core-Shell Structured ZSM-5@Silicalite-1 Zeolite显示文摘Core-shell structured ZSM-5@Silicalite-1 zeolite could effectively hinder the deactivation of catalyst surface. Currently, organic structure directing agents(OSDAs) are necessary in the conventional route for the synthesis of this core-shell zeolite under hydrothermal conditions, which is costly and environmental-unfriendly. In this research, a synthesis of the core-shell structured ZSM-5@Silicalite-1 zeolite with a strategy of alcohol filling and zeolite seeding without any organic template or solvent is exhibited. The obtained products are well characterized by X-ray powder diffractometer(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM), N2 sorption isotherms, solid magic angle spinning(MAS) NMR, temperature-programmed-desorption of ammonia(NH3-TPD), and X-ray photoelectron spectroscopy(XPS) techniques, in order to confirm the core-shell structure. More importantly, the core-shell structured ZSM-5@Silicalite-1 zeolite exhibits a long lifetime and a high p-xylene selectivity in the alkylation of toluene with methanol, compared with the conventional ZSM-5 catalyst. | LUAN Huimin WU Qinming ZHANG Jian WANG Yeqing MENG Xiangju XIAO Feng-Shou | 2022 | Chemical Research in Chinese Universities2022,38,1: | 3 |
| 9 | A new phosphidation route for the synthesis of NiPx and their cocatalytic performances for photocatalytic hydrogen evolution over g-C3N4显示文摘Ni-based phosphides(NiPx)composed of earth-abundant elements are promising cocatalysts to replace noble metals for photocatalytic H2 evolution reaction(HER).A safe,energy-saving,and compositioncontrollable synthesis of NiPx is still highly desired.A facile and mild solvothermal process was developed for the first time for selective synthesis of a series of NiPx,including Ni,Ni12P5,Ni2P/Ni12P5,Ni/Ni2P and Ni2P,through controlling the dosage of NaBH4 and NaH2PO2.The phosphidation process was mainly composed of(1)a sequential reduction of Ni2+to Nj0 and(H2PO2)-to P(around the formed Ni0)triggered by NaBH4,and(2)a final phosphidation between Nj0 and the in situ generated P atoms.The photocatalytic HER performance of g-C3N4 can be substantially improved with the decoration of NiPx(3 wt%)as the separation of photoinduced charge carriers can be promoted and some active sites with low over-potential for HER can be introduced.The cocatalytic efficiency of NiPx is mainly determined by P content.Ni2P with a high ratio of P consequently exhibits the highest HER performance(215.1 umol g-1 h-1),which is almost six times higher than that of the pristine g-C3N4(35.6 umol g-1 h-1).Thus,as for the cocatalyst based on Ni phosphides,Ni2P is the preferable crystal phase and more efforts should be devoted to Ni2P to further optimize its structure,texture,and morphology in future works. | Ziqun Wang Longfeng Li Mingzhu Liu Tifang Miao Xiangju Ye Sugang Meng Shifu Chen Xianliang Fu | 2020 | Journal of Energy Chemistry2020,29,9: | 2 |
| 10 | Fabrication of Z-Scheme WO3/KNbO3 Photocatalyst with Enhanced Separation of Charge Carriers显示文摘Z-Schemc photocatalysts as a research locus pertomi strong redox capability and high photocatalytic peribnnance.WO3/KNbO3 photocatalysts were fabricated by ball milling method,and performed higlier photocatalytic activity in liquid degradation(rhodamine B,methylene blue and bisphenol A),compared with WO3 or KNbO3 monomer.This is due to that Z-scheme heterojunction is lonned between WO3 and KNbO3,and the holes photo-excited in valence band of KNbO?are quickly combined with the electrons in conduction band of WO3.The electrons accumulated in conduction band of KNbO3 show high reducibility,thereby reducing O2 to·O 2-,and the holes in valence band of WO3 show high oxidative to oxidize H2O to·OH,respectively.Furthermore,it is proved by means of electron spin resonaiice(ESR)spectra,terephthalic acid photolumiiiescence probing technique(TA・PL),and UV-Vis absorption spectra of nitroblue tetrazolium.This work indicates that the iabrication of Z-scheme structure can improve the photocatalytic activity by efficiently separating the photogenerated electrons and holes in the photocatalytic reaction system,which is helpful to deeply understand the migration mechanism of photoexcited cairier(band-band transfer and Z-scheme transfer)in heterojunction photocatalysts. | ZHENG Xiuzhen HAN Huijuan YE Xiangju MENG Sugang ZHAO Shuangshuang WANG Xiangxiang CHEN Shifu | 2020 | Chemical Research in Chinese Universities2020,36,5: | 1 |
| 11 | Organ-otemplate -free syntheses of ZSM -34 zeolite and its het-eroatom-substituted analogues with good catalytic performance显示文摘 | ZHANG Lin YANG Chengguang MENG Xiangju | 2010 | Chem Mater2010,22,: | 1 |
| 12 | Organosilane surfactant-assisted synthesis of mesoporous SSZ-39 zeolite with enhanced catalytic performance in the methanol-to-olefins reaction显示文摘SSZ-39 zeolite with AEI framework structure is a good catalyst candidate for the methanol-to-olefins(MTO)reaction.However,the diffusion limitation and coke formation often results in fast deactivation of the SSZ-39 zeolite catalyst.One solution for this challenge is to introduce mesoporosity in the SSZ-39 zeolite.Herein,we report the synthesis of mesoporous SSZ-39 zeolite using an organosilane surfactant,,-dimethyl--(3-(trimethoxysilyl)propyl)octan-1-aminium chloride,as a mesopore template and,-dimethyl--2,6-dimethylpiperidinium as a micropore template.The obtained zeolites were characterized by X-ray diffraction,N sorption,scanning electron microscopy,temperature programmed desorption of ammonia,and magic angle spinning nuclear magnetic resonance of Al.The results show that the mesoporous SSZ-39 zeolite has high crystallinity,meso/microporosity,high surface area,cuboid morphology,and abundant acidic sites.More importantly,this mesoporous SSZ-39 zeolite exhibits enhanced catalyst lifetime in the MTO reaction due to the presence of mesoporosity for fast mass transfer,compared with a conventional SSZ-39 zeolite without mesoporosity. | Hao Xu Chi Lei Qinming Wu Qiuyan Zhu Xiangju Meng Daniel Dai Stefan Maurer Andrei-Nicolae Parvulescu Ulrich Muller Fengshou Xiao | 2020 | Frontiers of Chemical Science and Engineering2020,14,2: | 1 |
| 13 | Insights into the Organotemplate-Free Synthesis of Zeolite Catalysts显示文摘 | Yeqing Wang Qinming Wu Xiangju Meng Feng-Shou Xiao | 2017 | Engineering2017,3,4: | 1 |
| 14 | Templating Route for Synthesizing Mesoporous Zeolites with Improved Catalytic Properties显示文摘 | Meng Xiangju Nawaz Faisal Xiao Fengshou | 2009 | Nano Today2009,4,4: | 1 |
| 15 | Templating route for synthesizing mesopomus zeolites with improved catalytic properties显示文摘 | Xiangju Meng Faisal Nawaz Fengshou Xiao | 2009 | Nano Today2009,4,4: | 1 |
| 16 | A novel catalyst of copper hydroxyphosphate with high activity in wet oxidation of aromatics 显示文摘 | Fengshou Xiao Jianmin Sun Xiangju Meng | 2001 | Applied Catalysis A: General2001,207,: | 1 |
| 17 | Catalytic oxidation of olefins and alcohols by molecular oxygen under air pressure over Cu2 (OH) PO4 and Cu40(PO4 )2 catalysts显示文摘 | Xiangju Meng Kaifeng Lin Xiaoyu Yang | 2003 | J Catal2003,218,: | 1 |
| 18 | High-temperature synthesis of magnetically active and SO 3 H-functionalized ordered mesoporous carbon with good catalytic performance显示文摘 | Fujian Liu Jing Sun Qi Sun Longfeng Zhu Liang Wang Xiangju Meng Chenze Qi Feng-Shou Xiao | 2011 | Catalysis Today2011,,1: | 1 |
| 19 | Green Routes for synthesis of zeolites显示文摘 | Meng Xiangju Xiao Fengshou | 2014 | Chem Rev2014,114,2: | 1 |
| 20 | Efficient and stable solid acid catalysts synthesized from sulfonation of swelling mesoporous polydivinylbenzenes显示文摘 | Fujian Liu Xiangju Meng Yonglai Zhang Limin Ren Faisal Nawaz Feng-Shou Xiao | 2010 | Journal of Catalysis2010,,1: | 1 |