检索结果-南通市图书馆

Degradation of Furfural by UV/O_3 Technology

在线全文

学校读者我要写书评

暂无评论

Chemical research in Chinese Universities 2009年第4期25卷 451-454页

作者： KANG Chun-li TANG Xiao-jian JIAO Xin-qian GUO Ping QUAN Fu-min LIN Xue-yu College of Environment and Resources Jilin University Changchun 130021 P. R. China

Furfural in aqueous solution was treated by UV/O3 *** results show that the removal rate of furfural is severely enhanced and the synergism phenomenon appears when ultraviolet and ozone are present *** influences of experimental parameters such as pH,the intensity of light and the negative-positive ions on furfural degradation were *** results indicate that furfural（300 mg/L） is almost completely degraded after 3 h under the optimum *** intermediate in the furfural degradation was characterized by GC-MS and IR spectrum and the degradation mechanism of furfural by UV/O3 technology was proposed.

关键词： Ozone Ultraviolet (UV) Furfural Degradation

MOF/CC-derivatives with trace amount of cobalt oxides as efficient electrocatalysts for oxygen reduction reaction

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2019年第5期30卷 989-994页

作者： Rui-Juan Wu Meng Liu Ye-Wang Peng Shuang Yao Xiang-Wei Guo Ai-Fang Geng Zhi-Ming Zhang School of Chemical and Environmental Engineering Changchun University of Science and TechnologyChangchun 130022China School of Chemistry and Chemical Engineering Tianjin University of TechnologyTianjin 300384China Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China

The development of high-efficiency,earth-abundant,and durable oxygen reduction reaction(ORR)electrocatalysts is desirable for commercialization of fuel cells,but remains a great ***,we develop a facile and practical method for preparing efficient ORR electrocatalysts by directly growing metal-organic frameworks(MOFs)Co2(INA)4·DMF(HINA=isonicotinic acid,1)and{[Co2(TPI)(H2O)2(OH)]·DMF}(H3 TPI=5-(4-(tetrazol-5-yl)phenyl)isophthalic acid,2)on the commercial carbon(CC).The resulting MOF/CCs were further pyrolysis to functionalize CC by trace amount of cobalt oxides,resulting in two composites Cal-MOF-1/CC(3)and Cal-MOF-2/CC(4),which can be used as efficient electrocatalysts for ORR with remarkable stability and large diffusion-limited current density,even superior to that of commercial Pt/C *** study reveals that the linking ligands with different structure and nitrogen contents in 1 and 2 smartly influence the types of cobalt *** catalytic activity of Co3O4/CoO/Co co-doped CC in 4 was much enhanced compared to that of CoO-doped CC in 3.

关键词： Metal-organic framework Cobalt oxide Oxygen reduction reaction Commercial carbon Electrocatalyst

Preparation and flexural properties of biomimetic laminated boards made from starch and maize stalk fiber

在线全文

学校读者我要写书评

暂无评论

International Journal of Agricultural and Biological Engineering 2009年第2期2卷 24-31页

作者： Zhang Fu Wu Na Tong Jin Zhou Jiang Yang Xin Ma Yunhai Chen Donghui Sun Jiyu College of Vehicle and Motive Power Engineering Henan University of Science and TechnologyLuoyang 471003China Department of Automotive Engineering Shandong Jiaotong UniversityJinan 250023China Key Laboratory of Terrain-Machine Bionics Engineering(Ministry of Education China)and College of Biological and Agricultural EngineeringJilin University at Nanling CampusChangchun 130025China College of Mechanical and Electrical Engineering Hebei Agricultural UniversityBaoding 071001China

In this study,maize stalk tegument separated from the maize pith was crushed to obtain the *** cross-linking maize starch adhesives considering four main factors(water content,gelatinization temperature,NaOH as gelatinization agent and Na2B4O7·10H2O as cross-linking agent)with three levels were prepared based on an orthogonal test scheme L9(34)in order to increase the water-resisting property and the bonding strength of the common maize starch *** bonding properties of maize starch adhesives were characterized using shearing strength under compression *** models of fiber reinforced composites were established according to the microstructure analysis of the four species of insects’elytra including Protaetia orentalis,Copris ochus Motschulsky,Anoplophora chinensis and Cytister bengalensis Aube,which will provide the biomimetic models for the biomimetic laminated *** maize stalk fiber biomimetic laminated boards were prepared based on the structural models of the elytra *** flexural strength and flexural elastic modulus of the biomimetic boards were *** results showed that the flexural strengths of the single layer jute fiber,-reinforced maize stalk fiber boards and the dual layer jute fiber reinforced maize stalk fiber boards are higher than those of the common maize stalk fiber boards and the other three groups of jute fiber hybrid reinforced stalk fiber boards because of the biomimetic laminated design.

关键词： maize stalk biomimetic elytra starch laminated board flexural property

四种昆虫鞘翅断面的超微观结构及仿生模型(英文)

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

农业工程学报 2011年第6期27卷 105-109页

作者：张伏高吭佟金周江马云海河南科技大学车辆与动力工程学院洛阳471003 吉林大学生物与农业工程学院长春130025

研究动物鞘翅的内部结构,为复合材料的结构设计提供设计依据,以东方白点花金龟(Protaetia orentalis)、臭蜣螂(Coprisochus)、星天牛(Anoplophora chinensis)和黄缘真龙虱(Cytister bengalensis)为研究对象,利用扫描电子显微镜对鞘翅断... 详细信息

研究动物鞘翅的内部结构,为复合材料的结构设计提供设计依据,以东方白点花金龟(Protaetia orentalis)、臭蜣螂(Coprisochus)、星天牛(Anoplophora chinensis)和黄缘真龙虱(Cytister bengalensis)为研究对象,利用扫描电子显微镜对鞘翅断面进行了分析,并结合四种昆虫的生活环境,对观察到的鞘翅材料结构进行了分析和总结;针对鞘翅材料的结构特点,概括和总结了纤维模型和层状复合材料模型。研究结果表明:四种昆虫的鞘翅均由层状复合材料组成,在鞘翅内部发现的纤维(束)的形态略有区别。在花金龟鞘翅的纤维(束)形态有T型结构、正交叠层结构和分叉纤维结构;臭蜣螂鞘翅的纤维(束)形态有网状结构、块状凸起结构和刺状纤维结构;星天牛鞘翅的纤维(束)形态有空腔结构、螺旋结构、孔洞结构和刺状结构;龙虱鞘翅的纤维(束)形态有空腔和孔洞结构。这些天然生物纤维结构形式为轻质仿生复合材料的结构设计提供了可供学习和效仿的生物模型;基于四种昆虫鞘翅的内部结构分析,总结了常用的几种纤维模型,即分叉纤维模型和螺旋纤维模型,并对两种模型进行了模型示意,几种结构模型为复合材料特别是层状复合材料和纤维增强复合材料的仿生结构设计提供了依据。

关键词：昆虫鞘翅仿生扫描电镜纤维增强复合材料