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Self-assembly of fibrous ZSM-5 zeolites in the presence of sodium alginate

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Particuology 2017年第4期15卷 55-62页

作者： jinlong jiang Shoupeng Ji Chuansong Duanmu Yichang Pan Jie wu Mei Wu Jing Chen Faculty of Chemical Engineering Key Laboratory for Palygorskite Science and Applied Technology offiangsu Province Huaiyin Institute of Technology Huaian 223003 China jiangsu Provincial Engineering Laboratory for Advanced Materials of Salt Chemical Industry Huaiyin Institute of Technology Huaian 223003 China State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech University Nanjing 210009 China

ZSM-5 zeolites with a fibrous morphology were successfully self-assembled in the presence of sodium alginate. The effect of the sodium alginate concentration, Si/Al molar ratio in the synthesis gel, crystalliza- tion temperature and time, and the addition order of the sodium alginate on the morphology of the ZSM-5 zeolites was investigated. The possible formation mechanism of fibrous ZSM-5 zeolite crystals was also proposed. The results indicated that the carboxyl and hydroxyl groups of sodium alginate synergistically induced the self-stacking of ZSM-5 nanocrystals and thus the formation of the fibrous ZSM-5 zeolites. The Si/A1 molar ratio of the fibrous ZSM-5 zeolites could be adjusted by controlling the amount of the NaAIO2 additive; however, high Si/Al molar ratios also hindered the self-stacking ofZSM-5 nanocrystals. A high crystallization temperature （180℃）, a moderate sodium alginate concentration （8.33 g/L）, and the addition of sodium alginate prior to tetraethoxysilane were necessary for the formation of fibrous ZSM-5 zeolites.

关键词： Fibrous morphology Self-assembly Sodium alginate ZSM-5 zeolite

Review of the fabrication and application of porous materials from silicon-rich industrial solid waste

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International Journal of Minerals,Metallurgy and Materials 2022年第3期29卷 424-438页

作者： Chao Miao Lixing Liang Fan Zhang Shumei Chen Kaixuan Shang jinlong jiang Yi Zhang Jing Ouyang Hunan Key Lab of Mineral Materials and Application Department of Inorganic MaterialsSchool of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China National&Local Joint Engineering Research Center for Mineral Salt Deep Utilization Huaiyin Institute of TechnologyHuai’an 22300China Key Lab of Clay Mineral Functional Materials in China Building Materials Industry Central South UniversityChangsha 410083China

Porous materials have promise as sound insulation, heat barrier, vibration attenuation, and catalysts. Most industrial solid wastes, such as tailings, coal gangue, and fly ash are rich in silicon. Additionally, a high silicon content waste is a potential raw material for the syn- thesis of silicon-based, multi-porous materials such as zeolites, mesoporous silica, glass-ceramics, and geopolymer foams. Representative sil- icon-rich industrial solid wastes (SRISWs) are the focus of this mini review of the processing and application of porous silicon materials with respect to the physical and chemical properties of the SRISW. The transformation methods of preparing porous materials from SRISWs are summarized, and their research status in micro-, meso-, and macro-scale porous materials are described. Possible problems in the application of SRISWs and in the preparation of functional porous materials are analyzed, and their development prospects are discussed. This review should provide a typical reference for the recycling and use of industrial solid wastes to develop sustainable “green materials.”

关键词： silicon-rich industrial solid waste porous materials physicochemical properties material utilization of solid wastes

Improved dispersion performance and interfacial compatibility of covalent-grafted MOFs in mixed-matrix membranes for gas separation

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Green Chemical Engineering 2021年第1期2卷 86-95页

作者： Chongqing Wang Guangjie Ren Kaifeng Wei Donghui Liu Tingting Wu jinlong jiang Junfeng Qian Yichang Pan College of Chemical Engineering State Key Laboratory of Materials-Oriented Chemical EngineeringNanjing Tech UniversityNanjing210009China Key Laboratory for Palygorskite Science and Applied Technology of jiangsu Province Faculty of Chemical EngineeringHuaiyin Institute of TechnologyHuaian223003China jiangsu Province Key Laboratory of Fine Petrochemical Engineering Changzhou UniversityChangzhouJiangsu ProvinceChina

Mixed-matrix membranes(MMMs)have received much attention due to their processable advantages of polymer and high permeability and/or selectivity of porous metal-organic frameworks(MOFs)***,the interfacial defects caused by poor interaction between MOFs with polymers and the agglomeration phenomenon caused by uneven dispersion of MOFs are common problems in mixed-matrix ***,the priming protocol is one of solutions to the above problems,but it cannot precisely regulate the dispersion of particles and the interfacial compatibility between two ***,covalent grafting of polyimide 6FDA-Durene onto the surface of UiO-66-NH2 can mitigate the aggregation of fillers inside the polymeric matrices and improve the interfacial interaction between two phases,thus significantly improving the CO_(2)/CH_(4)separation performance on the as-synthesized *** explored gas transport mechanism indicated that the improved separation was due to the raise of solubility ***,the stronger covalent bond between fillers and polyimide than physical interaction of priming protocol also endows the improved anti-plasticization phenomenon for CO_(2)/CH_(4)separation.

关键词： Mixed-matrix membrane MOFs Priming Covalent grafting Interfacial compatibility

基于DEVS的UML建模方法:UML-BD

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计算机工程 2005年第16期31卷 21-23页

作者：江金龙周献中孙勇成南京理工大学自动化系南京210094

DEVS是一种层次的模块化的系统说明方法,它提供了一种层次的模块化的系统说明方法。文中给出的UML-BD方法就是在UML中结合DEVS这一特点,对UML进行一定的扩展;同时还在UML中增加了时间的约束,满足系统的实时性的要求。该方法适合一类层... 详细信息

DEVS是一种层次的模块化的系统说明方法,它提供了一种层次的模块化的系统说明方法。文中给出的UML-BD方法就是在UML中结合DEVS这一特点,对UML进行一定的扩展;同时还在UML中增加了时间的约束,满足系统的实时性的要求。该方法适合一类层次结构清晰、实时性强的系统的建模,如C4I系统。

关键词：模块化时间约束实时性

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基于Web服务的全球供应链研究与实现

计算机工程 2005年第22期31卷 15-17,31页

作者：金纪文金烨刘熙杰张洁上海交通大学计算机集成制造研究所上海200030

引入了基于Web服务的全球供应链的思想,介绍了基于Web服务的全球供应链的应用集成框架,阐明了Web服务是如何形成高层次接口,并通过这个接口,企业可以用一种松散的方式更加容易地找到彼此,并进行商务集成和运营,从而实现真正意义上的全... 详细信息

引入了基于Web服务的全球供应链的思想,介绍了基于Web服务的全球供应链的应用集成框架,阐明了Web服务是如何形成高层次接口,并通过这个接口,企业可以用一种松散的方式更加容易地找到彼此,并进行商务集成和运营,从而实现真正意义上的全球合作伙伴的正确选择和敏捷EAI。最后以在线应用服务系统CFCC(CAD File Conversion Center,CAD文件转换中心)的建立作为工程应用实例。

关键词：全球供应链服务企业行商全球合作商务运营基于Web 接口 CAD文件

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Robust CDMA Multiuser Detection based on Least p-Norm State Space Model

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Robust CDMA Multiuser Detection based on Least p-Norm State ...

基于BLPN算法的AR SαS过程共变谱估计方法

2006 8th International Conference on Signal Processing

作者： Daifeng Zha jinlong jiang Hongshe Fan Xiaochun Sun Junbo Long College of Electronic Engineering Jiujiang University

＜正＞Alpha stable distribution is better for modeling impulsive noises than Gaussian distribution in signal *** proposed a new adaptive recursive least p-norm Kalman filtering algorithm and a new robust CDMA multiuser detection method based on least p-norm Kalman *** simulation experiments show that the proposed new algorithm is more robust than the conventional Kalman filtering.

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数据采集与处理 2010年第6期25卷 766-771页

作者：姜玉林査代奉江金龙九江学院电子工程学院上海大学机电工程与自动化学院

研究了一种新的AR SαS过程的谱估计算法。该算法将整个数据作为一个整体,利用分数低阶p阶矩从前向、后向两个方向对数据进行处理,获得了一种高分辨率的参数估计算法——双向最小p范数法(Bidirectional Least p Norm,BLPN)。利用得到的... 详细信息

研究了一种新的AR SαS过程的谱估计算法。该算法将整个数据作为一个整体,利用分数低阶p阶矩从前向、后向两个方向对数据进行处理,获得了一种高分辨率的参数估计算法——双向最小p范数法(Bidirectional Least p Norm,BLPN)。利用得到的参数,结合共变谱的定义,构建了AR SαS过程下的共变谱估计表达式,并分别对AR SαS过程参数估计、α稳定分布噪声中的正弦信号的谱估计进行仿真。仿真结果表明,基于BLPN的ARSαS模型的共变谱估计方法对于不同的α值均具有良好的韧性,特别是在α值较小或者短时数据时,本文方法的性能明显优于基于FLOM的AR SαS模型共变谱估计方法。

关键词： α稳定分布共变谱 BLPN算法短时数据 AR SαS过程

SO_4^(2-)/ZrO_2/凹土纳米固体酸催化剂的制备及其催化合成乙酸正丁酯

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石油化工 2011年第4期40卷 365-368页

作者：蒋金龙钱运华固旭淮阴工学院生命科学与化学工程学院江苏省凹土资源利用重点实验室江苏淮安223003

以凹凸棒石黏土(简称凹土)为载体,采用沉淀法制备了SO24-/ZrO2/凹土纳米固体酸催化剂;采用XRD,EDX,TEM等方法对催化剂进行了表征;考察了载体、催化剂制备条件对催化剂催化乙酸与正丁醇进行酯化反应合成乙酸正丁酯的影响。实验结果表明,... 详细信息

以凹凸棒石黏土(简称凹土)为载体,采用沉淀法制备了SO24-/ZrO2/凹土纳米固体酸催化剂;采用XRD,EDX,TEM等方法对催化剂进行了表征;考察了载体、催化剂制备条件对催化剂催化乙酸与正丁醇进行酯化反应合成乙酸正丁酯的影响。实验结果表明,凹土晶体纤维表面高度分散的ZrO2纳米粒子与凹土的协同作用使SO24-/ZrO2/凹土纳米固体酸催化剂具有很好的活性。在m(ZrO2)∶m(凹土)=1∶2、煅烧温度500℃、煅烧时间3h的条件下制备的SO24-/ZrO2/凹土纳米固体酸催化剂的活性最高;在乙酸0.50m o、l正丁醇0.55m o、l催化剂0.6g、反应温度120℃和时间90m in的条件下,酯化率可达90.34%;该催化剂具有较好的稳定性,重复使用4次其催化活性基本保持稳定。

关键词：凹凸棒石黏土固体酸催化剂乙酸正丁醇乙酸正丁酯

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层次建模分析方法在C4ISR系统中的应用

计算机工程 2006年第12期32卷 11-13页

作者：江金龙杨华甫周献中孙勇成南京理工大学自动化系南京210094 厦门大学计算机系厦门361005 南京大学工程管理学院南京210093

C4ISR系统是一个规模庞大、层次分明的离散动态系统,文章提出了一种面向C4ISR系统的UML和Petri网结合的建模分析方法。该方法采用从上到下的层次分析方法,用扩展的UML模型对系统组织结构和系统的静态特征进行描述,用扩展的Petri网模型... 详细信息

C4ISR系统是一个规模庞大、层次分明的离散动态系统,文章提出了一种面向C4ISR系统的UML和Petri网结合的建模分析方法。该方法采用从上到下的层次分析方法,用扩展的UML模型对系统组织结构和系统的静态特征进行描述,用扩展的Petri网模型描述和分析系统动态特性,通过相应的规则将Petri网模型转化成状态图和序列图。新方法可以对系统要求进行验证,同时还可以编程实现。最后通过该方法,对一个C4ISR系统进行了建模分析。

关键词： UML Petri网层次分析 C4ISR