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shj8192金虫 (小有名气)
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[交流]
【求助】请高手帮忙分析一下图片
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 下面是对这幅图片的分析 The SAED pattern (the inset of Figure) recorded from the face of the crystal having the longest axis (for example, the circled area in the TEM image) alaways exhibits the same single-crystalline pattern, consistent with the [001] zone of AACH crystals. The elongated microfiber shape with the exposed (001) faces demonstrated that the AACH crystal preferably grew along the crystallographic c axis under the synthesis conditions. TEM image and a typical SAED pattern (inset) of a single-crystal AACH fiber. The SAED pattern is conformed to be the [001] zone of the AACH crystal (reflections: A, (020); B, (200)) and indicates the direction of AACH microfiber growth if perpendicular to the [100] crystallographic axis. 我的理解：图为单个纤维的TEM照片及其选区电子衍射图谱（插图）。其电子衍射图总是显示相同的单晶衍射花样，这与AACH的［001］带轴电子衍射图一致（衍射斑点：A，020； B，200)。增长的微纤维和暴露的（001）晶面显示在本实验的合成条件下，AACH晶体倾向于沿着C轴方向生长 [ Last edited by dgf2008 on 2009-4-8 at 22:54 ] |
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jhaomail
铁杆木虫 (正式写手)
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3楼2009-04-08 19:10:55
shj8192
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2楼2009-04-08 14:40:15
shj8192
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以PEG(Mn=20000)为模板导向剂，尿素为沉淀剂，采用水热-热分解法制备了纳米介孔结构的氧化铝纤维，并对其吸附性能进行了初步研究。通过X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、热释重仪(TGA)和N2等温脱附-吸附分析，考察了介孔氧化铝纤维的相态、结构、形貌、比表面积和介孔特征。采用选择性催化还原(SCR)烟气脱硝装置对其吸附性能进行了初步研究。结果表明：以PEG为模板，采用简单的水热法就可得到长8-10μm、直径200-300nm的碳酸铝铵纤维；经900℃煅烧2h后得到比表面积316m2/g、平均孔径2.5nm的η-Al2O3介孔纤维，且产品的形貌基本不发生变化；SCR烟气脱硝测试显示，相比商品氧化铝粉末，合成的氧化铝介孔纤维有着更强的吸附性能，它的脱硝效率较之商品氧化铝粉末大约提高了15%。 Alumina microfibers with mesoporous structures were sythesized by using surfactant assisted hydrothermal and thermal-decomposition method, and its adsorbability was also investigated. The phase state, chemical structure, surface morphology, special surface areas and mesoporous structure of the synthesized alumina microfibers were measured systemically by means of XRD, SEM, TEM, TG/DTA, and N2 adsoption-desoption techniques, respectively. The adsorptive property of the obtained mesoporous alumina fibers was examined by using a typical SCR denitrification facility. The experimental results show that the diameter and length of the as-synthesized AACH microfibers is about 200-300nm and 8-10μm, respectively. The η-Alumina mesoporous microfibers with specific surface area 316m2/g and average pore diameter 2.5nm are obtained After calcining at 900℃ for 2h, but the morphology is retained during the calcination process. SCR denitrification tests show that the as-prepared alumina mesoporous microfibers exhibited more favorable adsorptive properties and its efficiency of denitrification increased approximately 15%. 上面的问题没人回答 这个是我写的文章的摘要，请高手帮忙看看我的英文摘要，最好能避免中式英语 帮忙有重谢 |
4楼2009-04-13 20:38:43
shj8192
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5楼2009-06-01 11:18:59