1。 4。 6。 8 2 图2 合成产物的XRD图谱 Fig.2 XRD pattern of synthesized product Ca]cining conditions;550℃,4h 表 1 台成产物的性质 Table 1 Properties of synthesized MCM一41 s8 si d 】10 dzoo dno Pore diameter/ mple TemD[ate source J (I/Ic) (I/t0) (t/t0) (1fI } ...
图1典型的mcm41中孔分子筛xrd表征结果fig1xrdpatternofthetypicalmesoporousmolecularsievesmcm41图1给出了典型的mcm41中孔分子筛xrd谱图与文献报道的标准mcm41的谱图对比相一致在nh3teos1时可产生较好的mcm41中孔分子筛d100在2215297之间都有很强的衍射随着氨水用量的增加ph值增大在一定范围内相应产物的xrd谱图的主...
男.1968年生,硬士联系人:**慰Teh(0411)4671991.646.248催化20卷20)圈1水热台成MCM-41介孔分子筛的XRD谐FigIXRDpatternofas-synthesizedMCM一41inhydrothermaleondi~on{×I500)球形晶粒,其直径约为5.6m.2.2台成分子筛的晶化曲线在凝胶配比为围2水热台成MCM.41舟孔分子,l菁的sEM黑片Fig2SEMphotoofas-...
图 1 MCM 一4 1 的 XRD 图 F i g.1 X R D pattern s of MCM 一4 1 molecul ar sieve produ cts 通过 Bragg 方程 d 。。= nh/2sinO( d。0o为晶面间距 , A =0.154 02 nm,/ 2 为衍射 级数,0 为衍 射半 角 ) 和 Scherer 方程 口。= 2d,。。 ( o。为晶胞参数) 计算 ,得 样品...
中南大学资源生物学院,长沙410083) 摘要:以水玻璃为硅源,四氯化钛为钛源,去离子水为溶剂,EDTA 为络合剂,十六烷 基三甲基溴化铵(CTAB)为模板 剂,常压合成 Ti—MCM-41,采用 x 射线粉末衍射(XRD),低温 N:吸附一脱附试验 (77K),傅立叶红外光谱(FrlR),紫 外可见光漫吸收光谱(uV—vis)和透射电子显微镜(TEM...
氨基修饰的MCM-41和纯MCM-41的微波制备及去除废水中铜离子的研究 曹 渊 李创举 黄秋燕 魏红娟 （重庆大学化学化工学院，重庆400030）摘要采用微波辅助水热法一步合成了具有大比表面积和孔径的氨基改性的MCM-41（NH 2-MCM-41）和纯MCM-41，并用粉末X 射线衍射、红外、氮气-吸脱附对其结构作了表征。将NH 2-...
MCM-41CatalystGeranyl propionateIn this paper, the synthesis of mesoporous molecular sieves MCM-41 was carried out in an open-vessel. The mesoporous structure of as-synthesized MCM-41 was characterized by X-ray diffraction (XRD) pattern, Fourier transform infrared (FT-IR) spectrum, NH_3-...
When the templates were removed by solvent extraction, the XRD pattern (c) is similar with that of the as-synthesized sample (b), but the intensities were considerably enhanced and the peak positions were shifted to higher 2θ (degrees) due to further condensation of silanols during extraction...
The XRD pattern of all calcined samples shows at least four distinct peaks that indicates long range order of them. The nitrogen adsorption/desorption isotherm of all samples exhibits type IV isotherm which is the typical characteristic of mesoporous materials. When (2-Hydroxyethyl)-trimethylammonium ...
临床医学诊断等领域“.其中,Ru(bpy);体系是应用最广泛的电致化学发光体系之一.但是,由于Ru(bpy);用于均相电致化学发光体系时存在试剂消耗量高、环境污染严重和实验装置复杂等问题,使其应用受到一定限制;若将其固定在电极表面不仅可以克服上述问题,还可有效提高电致化学发光的强度.因此,近年来探索和发展新的固定方法...