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Preparation and microstructure of CuO-CoO-MnO/SiO2 nanocomposite aerogels and xerogels as catalyst carriers

Progress in Natural Science:Materials International 2011年第4期21卷 330-335页

作者： Yue-qing ZHAO~1,Ying-hua LIANG~2,Xi-zhe ZHAO~3,Qian-yi JIA~4,Hong-sheng LI~4 1.college of Light Industry,Hebei United University,Tangshan 063000,china 2.college of Chemical engineering,Hebei United University,Tangshan 063009,china 3.college of printing and packaging engineering,beijing institute of graphic communication,beijing 102600,china 4.college of Materials Science and engineering,Hebei United University,Tangshan 063009,china college of Light Industry Hebei United University Tangshan 063000 China college of Chemical engineering Hebei United University Tangshan 063009 China college of printing and packaging engineering Beijing Institute of Graphic Communication Beijing 102600 China college of Materials Science and engineering Hebei United University Tangshan 063009 China

CuO-CoO-MnO/SiO2nanocomposite aerogels and xerogels were prepared using tetraethyl orthosilicate（TEOS） as Si source,and aqueous solution of Cu,Co and Mn acetates as the precursor via sol-gel process,CO2supercritical drying（SCD） technique or ambient pressure drying *** microstructure of the CuO-CoO-MnO/SiO2nanocomposite aerogels and xerogels were characterized by field emission scanning electron microscopy（FE-SEM）,transmission electron microscopy（TEM） and X-ray diffraction（XRD）.The specific surface area,pore size and pore size distribution of the nanocomposite aerogels and xerogels were determined by the Brunauer-Emmett-Teller（BET） *** results showed that CuO-CoO-MnO/SiO2nanocomposite aerogels are porous,with a pore size distribution of 2-50 nm,an average pore size of 19.4 nm,a specific surface area of 384.9 m2/g and a particle size distribution of 10-150 nm,whereas the pore size distribution of CuO-CoO-MnO/SiO2composite xerogels is 1.7-128.6 nm,the average pore size is only 9.9 nm,the specific surface area is only 99.1 m2/g,and the particle size distribution is 100-500 *** structure of CuO-CoO-MnO/SiO2nanocomposite aerogels is favorable to increase the loading of catalysts.

关键词： composite aerogel composite xerogel catalyst carrier preparation microstructure

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Acid/alkali gated photochromism of two diarylperfluorocyclopentenes

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Science china Chemistry 2007年第5期50卷 581-586页

作者： CHEN ZiHui1, ZHAO ShengMin2, LI ZhongYu1, ZHANG Zhi1 & ZHANG FuShi1 1 The Key Lab of Organic Optoelectronics & Molecular engineering of Ministry of Education, Department of Chemistry, Tsinghua University, beijing 100084, china 2 Lab of printing & Packing Materials and Technology-beijing Area Major Laboratory, beijing institute of graphic communication, beijing 100084, china The Key Lab of Organic Optoelectronics & Molecular engineering of Ministry of Education Department of Chemistry Tsinghua University Beijing China Lab of printing & Packing Materials and Technology-beijing Area Major Laboratory Beijing Institute of Graphic Communication Beijing China

Two novel diarylfuorocyclopentenes, which underwent gated photochromism, were synthesized. It was found that the photochromic property of these diarylethenes could be switched by alternative addition of acids/alkalis,... 详细信息

关键词： photochromism, diarylethene, gated reactivity, pyridinium betaine

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A Resource Recovery Melting Disposal Method for Waste Incineration Residues

A Resource Recovery Melting Disposal Method for Waste Incine...

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2011 IEEE International Conference on Waste Recycling,Ecology and Environment(ICWREE 2011)

作者： Zhihong HOU1 * Shiyong LUO2 1 Key Laboratory of Testing Technology for Manufacturing Process Ministry of Education Mianyang china 2 The Laboratory of printing & packaging Material and Technology beijing institute of graphic communication beijing 102600 P. R. china

The waste incineration residues included fly ashes and slags, which did not meet the requirements of direct landfill. The waste incineration residues and the mixing powder of carbon-iron-alkali reductant were mixed and then processed as pellets with a diameter of 2-10 mm. The pellets were melted in a electrical furnace at 1200- 1400℃ and most of pellets had become melt. The cadmium, mercury, and arsenicum in the flue gas would be settled at the bottom of the two water flumes. The lead in the pellets would be reduced as the metal melt, and the chromium solid would settle in the bottom of the electrical furnace. The melt and slag exhausted from the bottom of the electrical furnace were water quenched as raw materials of metallurgy. The melt exhausted from the upper of the electrical furnace were water quenched as the raw materials for building *** such a method, harmful components such as cadmium, arsenicum, lead, mercury, and chromium were removed, and the waste incineration residues were recycled as resources.

关键词： waste incineration residues melting disposal heavy metals

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Synthesis and Characterization of Silver Citrate Nano-emulsion

Synthesis and Characterization of Silver Citrate Nano-emulsi...

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Fifth International Conference on Surface engineering

作者： Li-Xin MO Lu-Hai LI Ya-Ling LI Zhong-Xiao LI Ming Wang Lab.of printing & packaging Material and Technology beijing Area Major Lab beijing institute of graphic communication No.25 Xinghua Beilu Huangcun Daxing District beijing 102600 P.R.china

To prepare the nano-scale silver carboxylate emulsions and investigate their applications in the preparation of nano-scale silver films,the silver citrate emulsion was synthesized through the reaction of silver nitrate with sodium citrate in the presence of Polyvinylpyrrolidone（PVP） as a surface modification agent in *** emulsion was coated onto the surface of the PET substrate to form a thin latex layer of silver *** this was followed by drying at about 100 ***,the silver citrate thin film was deoxidized by aqueous ascorbic ***,a light yellow translucent silver thin film was formed on the surface of the PET *** of the silver citrate emulsion and the silver thin film on the PET substrate were fully characterized by X-ray powder diffraction（XRD）,Fourier transform infrared spectrum（FTIR）,Laser particle size analyzer,Scanning electron microscopy（SEM）,Differential scanning Calorimetry（DSC）,Thermogravimetry（TG）,UV-visible absorption spectroscopy,Atomic force microscopy（AFM） and Digital *** was found that the silver citrate particle which was surface-modified by PVP has a nano-rod structure and homogeneous size *** nano-rod was about 20 nm in diameter and 200 nm in *** the UV-visible absorption spectrum of the thin film exhibited an absorption peak at 430 nm,the silver thin film prepared by the reduction of the silver citrate-PVP thin film on the surface of the PET substrate with aqueous ascorbic acid was considered a typical nano-scale sliver *** of the sliver thin film at room temperature indicated that the silver film were electrically conductive,and the surface resistance of the film reached to 190Ω.

关键词： Nano-scale silver emulsion Surface resistance Silver film Silver carboxylat

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软包装无溶剂复合技术研究进展

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包装工程 2018年第9期39卷 44-50页

作者：郭鹏飞付亚波何昊葳左津津赵有中许文才北京印刷学院北京市印刷包装材料与技术重点实验室北京102600 广州通泽机械有限公司广州510830 上海康达化工新材料股份有限公司上海201419

目的综述软包装无溶剂复合技术在复合设备、胶黏剂和复合工艺等方面的研究进展。方法通过无溶剂复合技术与干式复合技术的对比,阐述无溶剂复合在工艺流程、复合参数、适用范围和经济效益等方面的特点及优势。介绍目前部分企业的无溶剂... 详细信息

目的综述软包装无溶剂复合技术在复合设备、胶黏剂和复合工艺等方面的研究进展。方法通过无溶剂复合技术与干式复合技术的对比,阐述无溶剂复合在工艺流程、复合参数、适用范围和经济效益等方面的特点及优势。介绍目前部分企业的无溶剂复合设备和胶黏剂的发展现状及其国内外科研方面的研究进展。最后分析当前无溶剂复合技术所面临的问题及挑战,并提出未来的发展趋势。结果无溶剂复合技术与干式复合技术相比,不仅在产能方面具有明显的优势,同时又存在巨大的经济效益与环保特性。结论无溶剂复合工艺因其突出的优势,符合当前环保的要求,是今后软包装复合主要的研究发展方向。

关键词：软包装无溶剂复合干式复合聚氨酯胶黏剂

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