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...
The mesoporous structure of as-synthesized MCM-41 was characterized by X-ray diffraction (XRD) pattern, Fourier transform infrared (FT-IR) spectrum, NH3-Temperature Programmed Desorption (TPD), and N_2 adsorption-desorption isotherms. The catalytic performances of MCM-41 for the synthesis of ...
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-...
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...
以有机硅废渣为原料制备介孔二氧化硅MCM-41及其吸附性能
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 ...
XRD 和 TEM 等方法对其结构进行了表征 . 结果表明,利用直接合成法和后接枝法合成的杂化材料仍保持规整 的介孔孔道,该材料作为酸催化剂在苯甲醛与乙二醇的缩醛反应中显示了较好的催化活性 . 关键词: M M-41 ,介孔有机 - 无机杂化材料,缩醛反应 ( EdLYX ) 9 5 3 第 5 期 高国华 等:磺酸基功能化 M M-...
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...
The low-angle XRD results indicated that the CuO2(acac)-Thio-APS-MCM41has similar XRD pattern as the mesoporous MCM41 although the intensity decreases. For high-angle XRD, the results show the presence of monoclinic CuO at 2胃 = 35.3 and 38.6掳 while N2 adsorption and BET results were ...