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Rare Metals 2006年第z1期25卷 333-336页

作者： YU Qian YU Lin HUANG Yingmin SUN Ming CHEN Xiaokang wang yuanna ZHANG Qini Faculty of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China Shaoguan College Shaoguan 512005China

Study on catalytic combustive reaction of dimethyl ether as a new fuel was *** catalysts were used to reduce ignition temperature so that dimethyl ether completely combusted at low *** catalysts MnLaAl_(11)O_(19-δ)were prepared by reverse microemulsion *** phase and structure of the catalyst were analysed by means of TG-DTA,XRD and *** results show that the hexaalunminate is of magnetoplumbite structure when La is taken as mirror plane *** phase is formed slowly via 1050℃calcined for 4 h and it can keep hexaaluminate phase and high surface area of 48 m^(2)·g^(-1)even calcined at 1200℃for 2 *** activity of MnLaAl_(11)O_(19-δ)was tested in combustion reaction of dimethyl *** shows that hexaaluminate is of high activity with T_(10%)at 170℃and almost 100%conversion at 370℃.

关键词： dimethyl ether catalytic combustion La-hexaalunminate reverse microemulsion

Effect of Preparation Methods on Activation of Catalysts BaNi0.2Mn0.8Al11O19-δ for Dimethyl Ether Combustion

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Chinese Journal of Chemical Engineering 2008年第3期16卷 389-393页

作者：余倩余林王苑娜张绮旎孙明黄应敏卢业玉戈早川 Faculty of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 China Shenzhen Specialized Functional Material Laboratory Shenzhen University Shenzhen 518060 China

Catalytic combustion of dimethyl ether （DME） over hexaaluminate catalyst BaNi0.2Mn0.8Al11O19-δ has been investigated. The catalysts were prepared with the sol-gel method and reverse microemulsion method respectively and characterized by thermogravimetry-differential thermal analysis, X-ray diffraction and transimission electron microscope. It was found that the formation of Mn, Ni modified hexaaluminate was a relatively slow process via two solid state reactions and spinel structure was a transition phase. At the same calcined temperature and time, the catalyst prepared with the reverse microemulsion method could form the hexaaluminate phase more easily than that prepared with the sol-gel method. The catalyst BaNi0.2Mn0.8Al11O19-δ prepared with the reverse micro-emulsion method appeared a plate-like morphology, while it appeared a needle-like morphology when using the sol-gel method. The catalytic activities of catalysts BaNi0.2Mn0.8Al11O19-δ prepared with two different methods for DME combustion were tested. It showed that catalyst prepared with the reverse microemulsion method had better catalytic activity, i.e. T10% of DME had decreased by 45℃, about 90% conversion of diemthyl ether at 380℃.

关键词： diinethyl ether hexaaluminate catalyst reverse microemulsion catalytic combustion

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二氧化钛可见光光催化技术研究进展

材料导报 2008年第S2期22卷 47-51页

作者：黄雪梅王苑娜成晓玲胡社军曾鹏谢光荣广东工业大学材料与能源学院广东工业大学轻工化工学院华南师范大学物理与电信工程学院

目前对TiO2可见光化的研究已取得一定进展,金属离子掺杂、非金属离子掺杂、染料光敏化、贵金属沉积和复合半导体以及离子注入等方法都不同程度地实现了TiO2可见光化。综述了TiO2可见光化改性技术目前的新进展,并展望了今后的研究方向。

关键词： TiO2 催化剂可见光

二甲醚燃烧用掺杂钡、镍六铝酸盐催化剂的研究

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无机盐工业 2006年第11期38卷 15-17页

作者：余倩余林黄应敏孙明成青华王苑娜张绮旎戴振生广东工业大学轻化学院广东广州510006

二甲醚是易液化,便于运输,清洁化的新能源。当作为燃料使用时,采用催化燃烧的方法能使得燃烧的起燃温度降低和提高燃烧转化率,克服了普通燃烧的缺点,实现了清洁燃烧。对二甲醚催化燃烧用的催化剂B aN iA l11O19-δ进行了制备与研究。采... 详细信息

二甲醚是易液化,便于运输,清洁化的新能源。当作为燃料使用时,采用催化燃烧的方法能使得燃烧的起燃温度降低和提高燃烧转化率,克服了普通燃烧的缺点,实现了清洁燃烧。对二甲醚催化燃烧用的催化剂B aN iA l11O19-δ进行了制备与研究。采用溶胶-凝胶法制备六铝酸盐催化剂B aN iA l11O19-δ,考察其对新能源二甲醚催化燃烧反应的活性,并用TG-DTA对催化剂的性质进行考察。结果表明,加入经800℃焙烧4 h后又在1 200℃焙烧了2 h的催化剂,比未加催化剂的燃烧体系T10降低了50℃。用溶胶-凝胶法制备的六铝酸盐催化剂B aN iA l11O19-δ对二甲醚催化燃烧反应具有较高的催化活性。

关键词：溶胶-凝胶六铝酸盐二甲醚催化燃烧

Ceramic membrane fouling mechanisms and control for water treatment

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Frontiers of Environmental Science & Engineering 2023年第10期17卷 103-117页

作者： Cheng Cai Wenjun Sun Siyuan He yuanna Zhang Xuelin wang School of Environmental Science&Engineering Tianjin UniversityTianjin 300072China School of Environment Tsinghua UniversityBeijing 100084China Research Institute for Environmental Innovation(Suzhou)Tsinghua Suzhou 215163China

Membrane separation, as an important drinking water treatment technology, has wide applications. The remarkable advantages of ceramic membranes, such as chemical stability, thermal stability, and high mechanical strength, endow them with broader prospects for development. Despite the importance and advantages of membrane separation in water treatment, the technique has a limitation: membrane fouling, which greatly lowers its effectiveness. This is caused by organics, inorganic substances, and microorganisms clogging the pore and polluting the membrane surface. The increase in membrane pollution greatly lowers purification effectiveness. Controlling membrane fouling is critical in ensuring the efficient and stable operation of ceramic membranes for water treatment. This review analyzes four mechanisms of ceramic membrane fouling, namely complete blocking, standard blocking, intermediate blocking, and cake filtration blocking. It evaluates the mechanisms underlying ceramic membrane fouling and summarizes the progress in approaches aimed at controlling it. These include ceramic membrane pretreatment, ceramic membrane surface modification, membrane cleaning, magnetization, ultrasonics, and nanobubbles. This review highlights the importance of optimizing ceramic membrane preparation through further research on membrane fouling and pre-membrane pretreatment mechanisms. In addition, combining process regulations with ceramic membranes as the core is an important research direction for ceramic membrane-based water treatment.

关键词： Ceramic membrane Fouling model Fouling control

In-situ transformation of Co(OH)_(2) into NH_(4)CoPO_(4)·H_(2)O on Co foil: 3D self-supported electrocatalyst with asymmetric local atomic and electronic structure for enhanced oxygen evolution reaction

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Journal of Energy Chemistry 2020年第12期29卷 167-174页

作者： Quande Che Xiaobin Xie Qian Ma Junpeng wang yuanna Zhu Ruixia Shi Ping Yang School of Materials Science and Engineering University of JinanJinan 250022ShandongChina School of Materials Science and Engineering.Wuhan University of Technology Wuhan 430070HubeiChina

Development of high efficient and stable water oxidation catalysts is essential for the realization of industrial water-splitting systems. Herein, a novel approach involving an in-situ transformation of Co(OH)2 nanosheets into NH4 CoPO4·H2 O nanoplates on Co foil is reported. As a 3 D self-supported oxygen revolution reaction(OER) electrocatalyst, the as-prepared NH4 CoPO4·H2 O/Co exhibits remarkable catalytic activity and exceptional stability. Specifically, it can deliver a current density of 10 m A cm^(-2) at a quite low overpotential of 254 m V with a small Tafel slope of 64.4 m V dec-1 in alkaline electrolyte. Through experimental study and theoretical analysis, the excellent OER performance can be attributed to enriched exposed active sites, favorable electron/proton transfer and mass transport, and its unique asymmetric local atomic and electronic structure. Thus, this present research not only provides a practicable in-situ transformation strategy to design 3 D self-supported electrocatalysts, but also enlightens a new way of developing transition-metal phosphates for efficient and stable water oxidation at atomic level.

关键词： Electrocatalysis Oxygen evolution reaction Transition-metal phosphate NH_(4)CoPO_(4)·H_(2)O

Rapid determination of thiabendazole in orange extract using excitation-emission matrix fluorescence and second-order calibration based on alternating trilinear decomposition/alternating normalization-weighted error algorithms

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Science China Chemistry 2008年第8期51卷 729-735页

作者： wang XueMei WU HaiLong NIE JinFang LI yuanna YU YongJie YU RuQin State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan UniversityChangsha 410082China

A novel approach is proposed for direct quantitative analysis of thiabendazole in the orange extract by using excitation-emission matrix fluorescence coupled with second-order calibration methods based on the alternating trilinear decomposition(ATLD) and the alternating normalization-weighted error(ANWE) algorithms,respectively. The average recoveries of thiabendazole in the orange extract by using ATLD and ANWE with an estimated component number of two were 99.7 ± 3.3% and 103.5 ± 4.1%,respectively. Furthermore,the accuracy of the two algorithms was also evaluated through elliptical joint confidence region(EJCR) tests as well as figures of merit,such as sensitivity(SEN),selectivity(SEL) and limit of detection(LOD). The experimental results demonstrate that both algorithms have been satisfactorily applied to the determination of thiabendazole in orange extract,and the perform-ance of ANWE is slightly better than that of ATLD.

关键词： excitation-emission matrix fluorescence alternating trilinear decomposition alternating normalization-weighted error orange extract thiabendazole

二肽基肽酶Ⅳ抑制剂治疗老年非胰岛素依赖型糖尿病患者的系统评价

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中国临床药学杂志 2017年第2期26卷 102-110页

作者：徐锦龙唐惠林俞璐陈元娜王井玲马卫成宁波市鄞州区第二医院药剂科宁波315100 北京大学第三医院药剂科北京100191

目的评价二肽基肽酶Ⅳ抑制剂(DDP4-I)治疗老年(年龄≥65周岁)非胰岛素依赖型糖尿病患者的有效性和安全性。方法从The Cochrane Library、Clinical ***、Pubmed、Embase、中国知网(CNKI)、万方数据库(Wanfang Data)、维普数据库(VIP)和... 详细信息

目的评价二肽基肽酶Ⅳ抑制剂(DDP4-I)治疗老年(年龄≥65周岁)非胰岛素依赖型糖尿病患者的有效性和安全性。方法从The Cochrane Library、Clinical ***、Pubmed、Embase、中国知网(CNKI)、万方数据库(Wanfang Data)、维普数据库(VIP)和中国生物医学数据库(CBM)中检索相关的随机对照试验(RCTs),根据Cochrane 5.1手册要求,选择研究、提取数据并评价纳入RCTs的质量,并使用RevMan 5.3软件进行Meta分析。结果共纳入12个RCTs。与安慰剂组相比,DDP4-I组可显著降低HbA1c(P0.05),但与其他降血糖药物组相比,DDP4-I组可显著降低低血糖事件发生率(P<0.000 1)。在其他指标方面,DDP4-I组与安慰剂组或其他降血糖药物组差异无统计学意义。结论基于当前的临床证据,DDP4-I可有效治疗老年非胰岛素依赖型糖尿病,且安全性较好。但研究间仍存在一定的异质性,故需更多高质量、大样本、多中心的RCTs予以验证。

关键词：二肽基肽酶Ⅳ抑制剂老年患者非胰岛素依赖型糖尿病 Meta分析

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二甲醚催化燃烧研究的进展

工业催化 2007年第7期15卷 1-3页

作者：韩峭峰王苑娜余倩张绮旎余林戈早川孙明郝志峰广东工业大学轻化学院广东广州510006 深圳大学深圳市特种功能材料重点实验室广东深圳518060

介绍了近年来二甲醚作为一种清洁能源的研究状况,进行了二甲醚的催化燃烧研究的初探。通过对贵金属、金属氧化物和六铝酸盐等催化剂应用于二甲醚催化燃烧的比较,发现六铝酸盐最具研究应用前景。

关键词：二甲醚催化燃烧六铝酸盐

Dendritic Cells Play a Pivotal Role in the Immune Response to Brucella Vaccine

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Dendritic Cells Play a Pivotal Role in the Immune Response t...