نتایج جستجو برای: Modified SBA–15

تعداد نتایج: 250787  

Journal: :Journal of environmental sciences 2018
Ziyang Zhang Haiyan Li Huijuan Liu

In order to study the influences of functionalized groups onto the adsorption of tetracycline, we prepared a series of amino and amino-Fe3+ complex mesoporous silica adsorbents with diverse content of amino and Fe3+ groups (named N,N-SBA15 and Fe-N,N-SBA15). The resulting mesoporous silica adsorbents were fully characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectrom...

2012
Mohammed T Al Samri Ankush V Biradar Ahmed R Alsuwaidi Ghazala Balhaj Suleiman Al-Hammadi Safa Shehab Suhail Al-Salam Saeed Tariq Thachillath Pramathan Sheela Benedict Tewodros Asefa Abdul-Kader Souid

BACKGROUND The biocompatibility of two forms of calcined mesoporous silica particles, labeled as MCM41-cal and SBA15-cal, with fetal blood mononuclear cells was assessed in vitro. METHODS AND RESULTS Fetal mononuclear cells were isolated from umbilical cord blood and exposed to 0.5 mg/mL of MCM41-cal or SBA15-cal for several hours. Transmission electron micrographs confirmed the presence of p...

Journal: :Catalysis Today 2021

Lewis acid catalyzed isomerization of glucose to fructose is an important reaction for production renewable chemicals. Here, we show the synthesis active and selective catalyst this by controlling Sn dispersion on SBA15. loading 1 wt. % over SBA15 (Sn/SBA15) maximized formation tetrahedral species surface. Increasing or changing support caused SnO2 clusters which reduced selectivity. A mechanis...

Journal: :Chemical Engineering Journal 2022

• Moisture increases CO 2 adsorption in the material modified with a tertiary amine. 13 ssNMR and DFT methods provided molecular insights into mechanisms. Selectivity remarkably amine moisture. DFT/cluster calculations confirmed water effect on adsorption. The of minor amounts CH 4 primary secondary amine-functionalised mesoporous silicas (APTES@SBA-15 DEAPTES@SBA15, respectively) was studied c...

2017
Qian Wang Lingyan Cao Yang Liu Ao Zheng Jiannan Wu Xinquan Jiang Ping Ji

BMP2 is well known as an outstanding growth factor for inducing new bone formation. However, improvements are still required to use BMP2 effectively and expand its clinical application due to the potential side effects at high doses. In this study, icariin (IC), a type of traditional Chinese medicine, was originally proposed to be a cooperative factor for BMP2. An alkaline phosphatase (ALP) act...

Journal: :Chemical communications 2016
Farhan Ahmad Pasha Anissa Bendjeriou-Sedjerari Edy Abou-Hamad Kuo-Wei Huang Jean-Marie Basset

Density functional theory calculations and 2D 1H-13C HETCOR solid state NMR spectroscopy prove that CO2 can be used to probe, by its own reactivity, different types of N-donor surface ligands on SBA15-supported Zr(IV) hydrides: [≡(Si-O-)(≡Si-N=)[Zr]H] and [≡(Si-NH-)(≡Si-X-)[Zr]H2] (X=O or NH). Moreover, [≡(Si–O-)(≡Si-N=)[Zr]H] activates CO2 more efficiently than the other complexes and leads to...

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...

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