
有序介孔材料的孔表征方法 - 知乎 - 知乎专栏
SBA-15 是一种介孔硅基分子筛,具有高度有序的六边形直孔结构(p6mm),其孔径可以在5~50 nm 范围内变化,且孔壁较厚(典型的在3 到9 nm)。 图1 SBA-15具有典型的二维六方结构
Synthesis and characterization of mesoporous SBA-15 and SBA …
2020年1月1日 · Fig. 1 a shows the X-ray diffraction pattern of SBA-15. The XRD data showed a well resolved pattern with a prominent peak at 2θ ca. 0.9° and two peaks at 2θ ca. 1.62 and 1.8° for the synthesized sample.
SBA15 - 百度百科
sba-15具有二维六方通孔结构,具有 p 6 mm 空间群。在xrd衍射图谱中,主峰在约1°附近,为(10)晶面峰。次强峰依次为(11)峰以及(20)峰。其他峰较弱,不易观察到。此外,sba-15骨架上的 二氧化硅 一般为无定形态,在广角xrd衍射中观察不到明显衍射峰。
Synthesis and Characterization of Mesoporous Silica SBA‐15 and ZnO/SBA ...
2020年3月19日 · XRD pattern of the SBA-15 sample is shown in Figure 2. Figure 2(a) shows the small-angle XRD patterns of SBA-15, scan range of 2 theta degrees of 0.5° to 10°. The typical XRD pattern for SBA-15 exhibits three characteristic peaks relative to the (100), (110), and (200) planes at 2θ of 0.96°, 1.45°, and 1.7°. These peaks characterize the ...
XRD patterns of SBA-15 and xMg-SBA-15 materials.
The Mg-modified SBA-15 materials and supported Ni catalysts were characterized by N2 physisorption (BET), X-ray diffraction (XRD), temperature-programmed desorption of CO2... Cite Download...
The powder XRD patterns of a) mesoporous silica SBA-15 and b) Al-SBA-15.
The nanocomposite precursor (P4VP/Al-SBA-15) was synthesized and then fired under N2 atmosphere at 1450°C with 10°C/min heating rate and soaking time of 0 and 6 h in order to form β-SiAlON by ...
Synthesis and characterization of SBA-3, SBA-15, and SBA-1 ...
2007年11月1日 · A highly ordered large pore mesoporous silica molecular sieve SBA-3, SBA-15, Al-SBA-15, and SBA-1, were developed and characterized by XRD, BET, FTIR, SEM, and NMR-MAS. The catalytic materials were synthesized using different raw …
XRD应用分享 | 介孔分子筛SBA-15结构分析 - 知乎 - 知乎专栏
2023年12月20日 · SBA-15结构特稳定性和其孔径大小与性能有较大关联,而XRD是表征其结构的有效方法之一。 由于SBA-15的晶胞较大,其衍射峰往往出现在非常低的角度,这导致很难从直射光和空气散射中区分其衍射信号。 目前,随着衍射仪的发展, 动态光路 的设计很好的解决了这类问题。 案例. 图1中给出了SBA-15小角度XRD图谱,低角度散射控制的很好,衍射峰明显。 五个衍射峰分别对应 (100)、 (110)、 (200)、 (300)、 (220)。 根据图2中SBA-15结构示意图,计算 …
XRD pattern of SBA-15 synthesized at 60, 100 and 130 C and …
Imaging of the platinum replica of the porous structure and low-pressure argon adsorption allowed us to elucidate the complicated porous structure of SBA-15. These techniques enabled us to draw a...
Thermal stability of Mesoporous SBA-15 and Sn-SBA-15 …
2008年9月1日 · Highly ordered SBA-15 and Sn-SBA-15 mesoporous molecular sieves with Si/Sn = 80, 60, 40 and 10 have been prepared through direct synthesis route under milder acidic conditions, which were used for the in situ high temperature X-ray diffraction (HTXRD) studies in the temperature range 298–1573 K for the
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