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| 1 | Preparation of hierarchical mesoporous Zn/HZSM-5 catalyst and its application in MTG reaction显示文摘The hierarchical mesoporous Zn/ZSM-5 zeolite catalyst was prepared by NaOH treatment and Zn impregnation, and its application in the conversion of methanol to gasoline (MTG) was studied. N2 adsorption-desorption results showed that the mesopores with sizes of 2–20 nm in HZ5/0.3AT was formed by 0.3 M NaOH alkali treatment. The zeolite samples after modification were also characterized by XRF, AAS, XRD, SEM and NH3-TPD methods. Zn impregnated catalyst Zn/HZ5/0.3AT exhibited dramatic improvements in catalytic lifetime and liquid hydrocarbons yield. The selectivity of aromatic hydrocarbons was also improved after Zn impregnation. It is suggested that the mesopores of Zn/HZ5/0.3AT enhanced the synergetic effect of Zn species and acid sites and the capability to coke tolerance, which were confirmed by the results of catalytic test and TGA analysis, respectively. | Youming Ni Aiming Sun XiaolingWu Guoliang Hai Jianglin Hu Tao Li Guangxing Li | 2011 | Journal of Natural Gas Chemistry2011，20，3： | 31 |
| 2 | Formaldehyde intermediate participating in the conversion of methanol to aromatics over zinc modified H-ZSM-5显示文摘Metal-modified H-ZSM-5 has a high selectivity of aromatics in methanol to aromatics(MTA)reaction,which is often attributed to the metal promoting the aromatization of intermediate olefins.However,the effect of methanol dehydrogenation on aromatics formation over these catalysts is rarely studied.Here,we report that HCHO,which is formed by methanol dehydrogenation over Zn/H-ZSM-5 prepared by Zn impregnation,can participate in the synthesis of aromatics.Methanol conversion can produce more aromatics than olefins(propylene or ethylene)conversion over Zn/H-ZSM-5,indicating the conventional MTA pathway including methanol-to-olefins and olefins-to-aromatics is not complete.Moreover,an MTA mechanism including the conventional pathway and the methanol and HCHO coupling pathway is systematically proposed. | Youming Ni Wenliang Zhu Zhongmin Liu | 2021 | Journal of Energy Chemistry2021，30，3： | 4 |
| 3 | Achieving high conversion of syngas to aromatics显示文摘Realizing high CO conversion and high aromatics selectivity simultaneously in syngas-to-aromatics(STA)reaction is still challenging.Herein,we report a 57.5%CO conversion along with 74%aromatics selectivity over a composite catalyst consisting of Fe/ZnCr_(2)O_(4)(Fe modified ZnCr_(2)O_(4)spinel)oxide and H-ZSM-5 zeolite.Impregnation of only 3 wt%of Fe onto ZnCr_(2)O_(4)can remarkably increase CO conversion without sacrificing the aromatics selectivity.Oxygen vacancy concentration is improved after impregnating Fe.The highly dispersed iron carbide species is formed during the reaction over Fe/ZnCr_(2)O_(4)spinel oxide.The synergistic effect of oxygen vacancy and iron carbide results in a rapid formation of abundant oxygenated intermediate species,which can be continuously transformed to aromatics in H-ZSM-5.This study provides a new insight into the design of highly efficient catalyst for syngas conversion. | Yi Fu Youming Ni Zhiyang Chen Wenliang Zhu Zhongmin Liu | 2022 | Journal of Energy Chemistry2022，31，3： | 2 |
| 4 | Study on the Clinical Effectiveness of Thymectomy for Myasthenia Gravis显示文摘Objectiv:To investigate the theoretical basis and clinical significance of thymectomy in the treatment of myasthenia gravis (MG). Methods:Analyze the changes in the contents of serum AchRab and sIL-2R, lymphocyte subtypes in Peripheral blood lymphocytes before and after thymectomy in 69 patients. Results:In the study group significant changes were found in serum contents of AchRab and sIL-2R before and after operation and there was also remarkable change in the number and constitution of peripheral blood lymphocyte subtypes. Conclusion:Thymectomy is an effective therapy for MG. | PAN Tiecheng, YAN Hua, ZHANG Ni, PAN Youming, TANG Yingxiong, WEN Xiang, SONG Dingwei, HU Ming, LIU Ligang, LIU Zixiong, YANG Mingshan, XU Jinzhi, PU Bitao, GAO Boting Department of Thoracis Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China | 2002 | The Chinese-German Journal of Clinical Oncology2002，1，1： | 1 |
| 5 | Highly converting syngas to lower olefins over a dual-bed catalyst显示文摘Light olefins (C2–C4olefins) are the most important basic carbon-based building blocks, which are mainly produced from the catalytic cracking of naphtha [1–3]. With the rapid depletion of oil reserves and the growing demand for lower olefins, there is an urgent need to develop an alternative technique for producing them from non-petroleum resources such as coal, natural gas, or biomass. Currently, coal has been successfully transformed to olefins in China via the combination of the processes of coal-tosyngas, syngas-to-methanol and methanol-to-olefins [4–6]. In order to further improve efficiency and reduce investment, the direct conversion of syngas to olefins has received extensive attention in recent years [7]. | Zhaopeng Liu Youming Ni Xudong Fang Wenliang Zhu Zhongmin Liu | 2021 | Journal of Energy Chemistry2021，30，7： | 1 |
| 6 | The preparation of nano-sized HZSM-5 zeolite and its application in the aromatization of methanol显示文摘 | Ni Youming Sun Aiming Wu Xiaoling | 2011 | Mieroporous and Meso- porous Materials2011，143，23： | 1 |
| 7 | Conversion of CO_(2) and H_(2) into propane over InZrO_(x) and SSZ-13 composite catalyst显示文摘Direct converting carbon dioxide into hydrocarbon fuels and value-added chemicals would offer a very attractive approach for efficient utilization of CO_(2) as a carbon resource.Although,olefins,aromatics and gasoline have been successfully synthesized by CO_(2) hydrogenation,highly selective conversion of CO_(2) and H_(2) into C_(2+)hydrocarbon is still challenging due to a high C-C coupling barrier and inhibiting the production of other long-chain hydrocarbons.Here,we report a composite catalyst made of InZrO_(x) and SSZ-13 molecular sieve(InZrO_(x)+SSZ-13),which exhibits 74.5% propane selectivity at 623 K.The 8-MR micropores and the higher strength of the acid for SSZ-13 benefit the formation of propane.Compared with pure InO_(x) and m-ZrO_(2) the composite oxide InZrO_(x) containing more oxygen vacancies,exhibits to be more readily reduced by H_(2) and easier to adsorb and desorb CO_(2) within the reaction temperature.All those could be beneficial to the activation and conversion of H_(2) and CO_(2).The catalytic performance of InZrO_(x)+SSZ-13 in CO_(2) hydrogenation provides a potential for production of propane. | Zhaopeng Liu Youming Ni Tantan Sun Wenliang Zhu Zhongmin Liu | 2021 | Journal of Energy Chemistry2021，30，3： | 1 |
| 8 | Aromatization of Methanol over La/Zn/HZSM-5 Catalysts 显示文摘 | Ni Youming Sun Aiming Wu Xiaoling | 2011 | Chin J Chem Eng2011，19，3： | 1 |
| 9 | Aromatizationof Methanol over La/Zn/HZSM-5 Catalysts显示文摘 | Ni Youming Sun Aiming Wu Xiaoling | 2011 | Chin J ChemEng2011，19，3： | 1 |
| 10 | High selective and stable performance of catalytic aromatization of alcohols and ethers over La/Zn/HZSM-5 catalysts显示文摘 | Ni Youming Sun Aiming Li Guangxing | 2010 | J Ind Eng Chem2010，16，4： | 1 |
| 11 | A dual-bed catalyst for producing ethylene and propylene from syngas显示文摘Ethylene and propylene(C_(2)^(–)3=)are the two most demanded olefin products,which are mainly produced by thermal and catalytic cracking of petroleum-derived hydrocarbons now[1].With the depletion of petroleum resources,the use of non-petroleum resources such as natural gas,coal,biomass,even CO_(2)etc. | Youming Ni Zhaopeng Liu Peng Tian Zhiyang Chen Yi Fu Wenliang Zhu Zhongmin Liu | 2022 | Journal of Energy Chemistry2022，31，3： | 0 |
| 12 | Insights into the size effect of ZnCr_(2)O_(4)spinel oxide in composite catalysts for conversion of syngas to aromatics显示文摘Direct conversion of syngas to aromatics(STA)over oxide-zeolite composite catalysts is promising as an alternative method for aromatics production.However,the structural effect of the oxide component in composite catalysts is still ambiguous.Herein,we investigate the size effect by selecting ZnCr_(2)O_(4)spinel,as a probe oxide,mixing with H-ZSM-5 zeolite as a composite catalyst for STA reaction.The CO conversion,aromatics selectivity and space-time yield(STY)of aromatics are all significantly improved with the crystal size of ZnCr_(2)O_(4)oxide decreases,which can mainly attribute to the higher oxygen vacancy concentration and thus the rapid generation of more C1oxygenated intermediate species.Based on the understanding of the size-performance relationship,ZnCr_(2)O_(4)-400 with a smaller size mixing with H-ZSM-5 can achieve32.6%CO conversion with 76%aromatics selectivity.The STY of aromatics reaches as high as 4.79 mmol g_(cat)^(-1)h^(-1),which outperforms the previously reported some typical catalysts.This study elucidates the importance of regulating the size of oxide to design more efficient oxidezeolite composite catalysts for conversion of syngas to value-added chemicals. | Yi Fu Youming Ni Wenhao Cui Xudong Fang Zhiyang Chen Zhaopeng Liu Wenliang Zhu Zhongmin Liu | 2023 | Green Energy & Environment2023，8，2： | 0 |
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