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

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.

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。

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 ...

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 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 ...

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 …

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 …

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...

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