نتایج جستجو برای: sba 15 اصلاح شده

تعداد نتایج: 941455  

Hamid Reza Pouretedal Sara Basati

Mesoporous photocatalysts of CeO2/SBA-15 are prepared by two methods of direct synthesis as solvent-usage and solvent-free methods. In solvent-usage method, CeO2/SBA-15 is synthesized in acidic media. While, in solvent-free method, CeO2/SBA-15, has been prepared through the novel path of directly grind cerium salt into the as-prepared samples of SBA-15 occluded ...

Journal: :Processes 2022

The chemical surface of Santa Barbara Amorphous-15 (SBA-15) was functionalized with polyaniline (SBA-15/PA) and prepared using aniline ammonium persulfate as the modifying agent oxidant. samples were characterized by N2 physical adsorption at 77 K. SBA-15′s area 654.5 m2 g−1, changing to 254.6 g−1. total acidity basicity determined a modified Boehm’s method, point zero charge pH (pHpzc) determi...

Journal: :Chemical communications 2013
Chia-Ming Wu Monika Rathi S Phil Ahrenkiel Ranjit T Koodali Zhenqiang Wang

A MOF-5 [Zn(4)O(BDC)(3); BDC = 1,4-benzenedicarboxylate]@SBA-15 hybrid material has been prepared by using SBA-15 as a matrix. This hybrid material exhibits improved hydrostability under ambient conditions and unique gas adsorption behavior compared with pristine MOF-5.

Journal: :Chemphyschem : a European journal of chemical physics and physical chemistry 2001
Z Liu O Terasaki T Ohsuna K Hiraga H J Shin R Ryoo

The hyperbolic geometry of the pores in SBA-15 are drawn into a three-dimensional structure by small lateral pores, distributed in a random way, as shown in the picture, which interconnect the main channels. This construction was established by forming a "negative" of the structure with platinum precipitated in the channel and dissolving the SBA-15 material.

2014

The primary goal of this preparation method was synthesis of uniformly coated ZrO2/SBA-15 materials exhibiting high dispersion and accessibility of zirconium using a layerwise deposition method to minimize growth of large crystallites. SBA15 was prepared the original method by Zhao et al.1 First 10g of SBA-15 was dried at 300°C for 4 hours. Then the dried SBA-15 and 58.5g of zirconium precursor...

ژورنال: شیمی کاربردی 2020

در این مطالعه، نانوذرات SBA-15 با 3-کلروپروپیل تری اتوکسی سیلان و سپس با لیگاند آلی تیوکربوهیدرازید (SBA-15@ TCH) عامل‌دار شد. سپس یون‌های نیکل استات بر روی نانوبستر سیلیکاتی تثبیت گردید (SBA-15@Ni/TCH). نانوذرات تهیه شده به عنوان یک هیبرید آلی-فلزی با استفاده از روش‌های FT-IR و SEM، TEM، ,XRD EDX و BET مورد بررسی و شناسایی قرارگرفت. نانوذرات SBA-15@Ni/TCH به عنوان نانوکاتالیزگری کارامد و ناهمگ...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2008

Journal: :DEStech Transactions on Engineering and Technology Research 2017

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