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Science China Chemistry 2024年第2期67卷 732-740页

作者： Shuchi Zhang Dengyun Miao Yi Ding Mengyuan Li shujing guo Yujuan Zhang Xiulian Pan Xinhe Bao State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China University of Chinese Academy of Sciences Beijing100049China Shaanxi Yanchang Petroleum(Group)Co. Ltd.&Dalian Institute of Chemical Physics Xi’an Clean Energy(Chemical Industry)Research InstituteXi’an710000China

Direct conversion of syngas to aromatics over metal oxide and zeolite(OXZEO) composite catalysts is ***,the selectivity of more valuable products such as benzene,toluene and xylenes(BTX) is limited due to undesired secondary methylation of ***,we report that the introduction of SAPO-34 into MnCrO_(x)-ZSM-5 catalyst enhances significantly the formation of BTX without sacrificing the aromatics *** optimized conditions,the fraction of BTX in aromatics reaches 64.7% versus 28.9% over the catalyst without SAPO-34.A number of model reaction tests and characterizations reveal that SAPO-34 consumes partially the intermediates such as ketene,by converting them to light ***,the methylation of BTX by ketene to heavy aromatics is inhibited over the external acid sites of ZSM-5,leading to an enhanced BTX selectivity in the *** hybrid catalyst provides an efficient method for highly selective synthesis of BTX from syngas.

关键词： selective syngas conversion OXZEO aromatics BTX multi-functional catalysts

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甲烷催化裂解制氢和碳纳米管钴共生材料

应用化工 2024年第6期53卷 1352-1354页

作者：朱海林郭淑静李彤魏超张伟陕西延长石油(集团)有限责任公司大连化物所西安洁净能源(化工)研究院陕西西安710065

采用配合物前驱体法、浸渍法、直接混合法3种方法制备负载型金属催化剂,研究其对甲烷催化裂解产氢和碳纳米管材料的催化性能。结果表明,采用配合物前驱体法制备的催化剂有着明显的制氢效率以及具有较高的碳纳米管材料产量。控制不同的... 详细信息

采用配合物前驱体法、浸渍法、直接混合法3种方法制备负载型金属催化剂,研究其对甲烷催化裂解产氢和碳纳米管材料的催化性能。结果表明,采用配合物前驱体法制备的催化剂有着明显的制氢效率以及具有较高的碳纳米管材料产量。控制不同的反应温度、反应时间等能够做到调控碳纳米管材料的管径和长度。

关键词：甲烷催化裂解氢气碳纳米管材料

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高校图书馆开展大学生思想政治教育路径研究

晋图学刊 2024年第1期 58-64页

作者：王玉宝郭淑敬山西财经大学图书馆山西太原030006

高校图书馆在大学生思想政治教育方面具有独特的优势,即馆藏资源、文化空间、重视信息素养培育等。本研究在调研了中国知网的相关主题研究和上海交通大学图书馆的思政教学案例的基础上,分析了高校图书馆嵌入大学生思想政治教育的关键因... 详细信息

高校图书馆在大学生思想政治教育方面具有独特的优势,即馆藏资源、文化空间、重视信息素养培育等。本研究在调研了中国知网的相关主题研究和上海交通大学图书馆的思政教学案例的基础上,分析了高校图书馆嵌入大学生思想政治教育的关键因素——人才资源、信息资源、空间资源、时间因素,基于此提出以下观点:提升馆员思政教育能力;重视信息资源整合;优化场馆教育空间;巧用时间节点创新思政方式的思政教育路径。

关键词：高校图书馆思想政治教育思政教育路径

Hydrophilic phytosterol derivatives: A short review on structural modifications, cholesterol-lowering activity and safety

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Grain & Oil Science and Technology 2022年第3期5卷 146-155页

作者： Yuyuan Hu Chuanguo Ma Xiaowei Chen Ge Bai shujing guo College of Food Science and Engineering Henan University of TechnologyZhengzhou 450001China

Phytosterols have received extensive attention owing to their excellent cholesterol-lowering activity and the role in cardiovascular diseases prevention. However, poor solubility in both oil and water limited the application of free phytosterols in the food industry. Chemical or enzymatic modifications were effective to improve the physicochemical properties as well as the bioavailability and cholesterollowering activity of phytosterols. Higher oil solubility and lower melting point of phytosterols have been achieved by esterification and transesterification with fatty acids and triacylglycerols so as to enhance the bioavailability, reduce formation of precipitates, and improve the sensory quality of *** the researches on the improvement on its water solubility is a hot topic. Hydrophilic phytosterol derivatives have promising applications in the food industry because most of foods belong to aqueous matrix. Hydrophilic modification is useful and meaningful for phytosterols in both industrial and commercial applications. This review mainly highlights the hydrophilic phytosterol derivatives in the following aspects:(i) hydrophilic modifications of phytosterols by coupling with various polar components;(ii) cholesterol-lowering activity and possible molecular mechanisms of hydrophilic phytosterol derivatives on reducing serum cholesterol level;and(iii) safety evaluation of hydrophilic phytosterol derivatives in cell-culture studies, animal models and clinical trials.

关键词： Hydrophilic modification Hydrophilic phytosterol derivatives Water solubility Cholesterol-lowering Mechanism

Adsorption behavior of activated carbon for the elimination of zearalenone during bleaching process of corn oil

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Grain & Oil Science and Technology 2023年第1期6卷 24-33页

作者： Yuyuan Hu Chuanguo Ma Weifeng Huang shujing guo Tong Wang Jun Liu College of Food Science and Engineering Henan University of TechnologyZhengzhou 450001China National Engineering Research Center of Wheat and Corn Further Processing Henan University of TechnologyZhengzhou 450001China

Zearalenone is a mycotoxin produced by Fusarium *** frequently contaminates cereals used for foods or animal feeds,especially deposited in crude corn *** amounts of zearalenone can be removed during refining *** this study,we studied the influence of activated carbon and six industial absorbents(zeolite,diatomite,attapulgite,perlite,montmorillonite and activated clay)on the elimination of zearalenone during bleaching process of corn oil and explored the absorption mechanism of activated *** showed that activated carbon had an excellent adsorption capacity of zearalenone compared with the other six industrial *** activated carbon,a high removal rate of zearalenone(exceeding 83%)from heavily zearalenone-polluted corn oil was achieved and the removal rate of zearalenone was kept above 60%after five regeneration *** research on the adsorption mechanism of activated carbon showed that Freundlich adsorption isotherm model and pseudo-second-order kinetic model could well described the adsorption *** thermodynamic study demonstrated that adsorption process was spontaneous and *** transform infrared spectroscopy and Raman spectroscopy further revealed that activated carbon was effectively combined with zearalenone viaπ-π***,activated carbon is an efficient and suitable adsorbent to control the levels of zearalenone during bleaching process of corn *** study not only proposed a systematic research scheme for the mechanism study of activated carbon for the elimination of zearalenone in corn oil,but also provided the scientific basis for developing effective methods to eliminate zearalenone in refined vegetable oils.

关键词： Zearalenone Adsorbents Activated carbon Adsorption kinetics Corn oil

Fabrication of flexible thin organic transistors by trace water assisted transfer method

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Chinese Chemical Letters 2018年第11期29卷 1681-1684页

作者： Junjie Kan Shuguang Wang Zhongwu Wang shujing guo Wenchong Wang Liqiang Li Institute of Nanochemistry and Nanobiology School of Environmental and Chemical EngineeringShanghai University Advanced Nano-materials Division Key Laboratory of Nano-Devices and ApplicationsSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of Sciences

The development of fabrication method for flexible thin organic electronic device is highly important for the flexible and wearable products. Herein, we develop a facile peel-off method to transfer organic thin film to various substrates. In this strategy, polyacrylonitrile （PAN） film can be easily peeled offwith trace water and further transferred to various substrates. Using PAN as supporting and dielectric layers, high performance flexible organic transistors are fabricated. Remarkably, the method uses only micro volume water as an assist to peel off PAN film, which reduces the risk of contamination by solvent and greatly contributes to the performance maintenance.

关键词： Transfer Flexible Thin film organic transistor Peel-off

Self-metathesis of 1-butene to ethene and hexene over molybdenum-based heterogeneous catalysts

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Chinese Journal of Catalysis 2018年第1期39卷 37-46页

作者： Ce guo Xiujie Li Xiangxue Zhu Weifeng Chu Shenglin Liu Yuzhong Wang Peng Zeng shujing guo Longya Xu Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China China Huanqiu Contracting and Engineering Corporation Fushun 113006LiaoningChina Shaanxi Yanchang Petroleum(Group)Co.Ltd. Yanan 716000ShaanxiChina

A novel route involving self‐metathesis of1‐butene under mild conditions that gave high yields ofethene and hexene was *** results of thermodynamic analysis revealed that the Gibbsenergy of the target Metathesis I reaction(1‐butene?ethene+3‐hexene)was much higher thanthat of the main side Metathesis II(1‐butene+2‐butene?propene+2‐pentene).Suppression of1‐butene double‐bond isomerization was the key step to increase the selectivity for the target olefinin the reaction *** relationship between the catalytic performance and support nature was investigated in *** basis of H2‐TPR,UV‐Vis spectra and HRTEM results,an alumina(Al2O3)support with large surface area was beneficial for the dispersion of molybdenum(Mo)*** suitable acidity and sufficient Mo dispersion were important to selectively promote the self‐metathesis reaction of1‐*** the optimal6Mo/Al2O3catalyst,1‐butene conversion reached47%and ethene selectivity was as high as42%on the premise of good catalytic stability(80°C,1.0MPa,3h?1).?2018,Dalian Institute of Chemical Physics,Chinese Academy of *** by Elsevier *** rights reserved.

关键词： 1‐Butene Self‐metathesis Molybdenum Ethene Hexene

Solution-processable precursor route for fabricating ultrathin silica film for high performance and low voltage organic transistors

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Chinese Chemical Letters 2017年第11期28卷 2143-2146页

作者： shujing guo Zhongwu Wang Zeyang Xu Shuguang Wang Kunjie Wu Shufeng Chen Zongbo Zhang Caihong Xu Wenfeng Qiu Liqiang Li Inner Mongolia University of College of Chemistry and Chemical Engineering Hohhot 010021 China Advanced Nano-materials Division Key Laboratory of Nano-Devices and Applications Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Suzhou 215123 China Laboratory of High-Tech Materials Institute of ChemistryChinese Academy of Sciences Beijing 100190 China

Silica is one of the most commonly used materials for dielectric layer in organic thin-film transistors due to its excellent stability, excellent electrical properties, mature preparation process, and good compatibility with organic semiconductors. However, most of conventional preparation methods for silica film are generally performed at high temperature and/or high vacuum. In this paper, we introduce a simple solution spin-coating method to fabricate silica thin film from precursor route, which possesses a low leakage current, high capacitance, and low surface roughness. The silica thin film can be produced in the condition of low temperature and atmospheric environment. To meet various demands, the thickness of film can be adjusted by means of preparation conditions such as the speed of spin-coating and the concentration of solution. The p-type and n-type organic field effect transistors fabricated by using this film as gate electrodes exhibit excellent electrical performance including low voltage and high performance. This method shows great potential for industrialization owing to its characteristic of low consumption and energy saving, time-saving and easy to operate.

关键词： Silica Spin coating Thin film Transistor

Ultrathin silica film derived with ultraviolet irradiation of perhydropolysilazane for high performance and low voltage organic transistor and inverter

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Science China Materials 2018年第9期61卷 1237-1242页

作者： Zhongwu Wang shujing guo Qianying Liang Huanli Dong Liqiang Li Zongbo Zhang Feifei Xing Wenping Hu Department of Chemistry Shanghai UniversityShanghai 200444China Advanced Nano-materials Division Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Tianiin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of SciencesTianjin UniversityCollaborative Innovation Center of Chemical Science and EngineeringTianjin 300072China Institute of Chemistry Chinese Academy of SciencesBeijing 100190China

In recent years, organic electronic devices have become more and more popular, such as organic solar cell （OSC） [1-4], organic light emitting diode （OLED） [5-7] and organic thin film transistor （OTFT） [8-11] by ... 详细信息

关键词：二氧化硅膜全氢聚硅氮烷制备方法有机晶体管紫外光辐照超薄膜反相器应用

Tunable redox reactions and catalytic activities by using carbon nanotube confined spaces

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Tunable redox reactions and catalytic activities by using ca...