نتایج جستجو برای: organosuperbases sba 15
تعداد نتایج: 497698 فیلتر نتایج به سال:
سنتز مزو حفره های سیلیکایی از سال 1992 تا به حال زمینه پژوهشی و کاربردی بسیار وسیعی را ایجاد کرده است. در مقایسه با سایر مزوحفره های سیلیکایی sba-15 دارای دیواره های ضخیم تری بوده و حجم حفره و مساحت سطح بیشتری دارند. سطح مزوحفره های سیلیکایی را می توان با گروه های آلی برای دست یابی به هدف های خاص بهینه کرد. کاربرد اصلی مزوحفره ها فرایندهای جذبی برای تصفیه پساب های موجود در محیط زیست است. حذف رن...
Serum-complement-mediated bactericidal antibody (SBA) remains the serologic hallmark of protection against meningococcal disease, despite experimental and epidemiologic data that SBA may underestimate immunity. We measured bactericidal activity against three strains of Neisseria meningitidis group B in sera from 48 healthy adults and in whole blood from 15 subjects. Blood was anticoagulated wit...
N-Methyl-Nʹ-propyltrimethoxysillylimidazolium chloride was prepared as ionic liquid (IL) containing silylating agent and then used for modification of the internal surface of SBA-15 to gain a heterogeneous ionic liquid catalyst. Subsequently, the obtained SBA-IL was characterized using various techniques, including SEM and TEM images, FT-IR, X-ray diffraction, TGA/DTA and BET ...
The activity of Ni supported on mesoporous SBA-15, MCM-41, KIT-6, and a sol-gel prepared Ni/γAl2O3, for catalysing methane dry reforming was investigated. The chemical and physical characteristics of the catalysts before and after catalytic testing were investigated using X-Ray diffraction, X-ray Photoemission Spectroscopy, Transmission Electron Microscopy, Scanning Electron Microscopy / Energy...
Ordered mesoporous carbons with various structures, designated as CMK-1~5, have been synthesized by carbonization of sucrose, furfuryl alcohol or other suitable carbon sources inside silica or aluminosilicate mesopores that are interconnected into three-dimensional networks such as in MCM-48 (cubic Ia3d), SBA-1 (cubic Pm3n) and SBA-15 (hexagonal p6mm). The mesoporous carbon molecular sieves, ob...
Objective(s): We aim to examine possible ammonia lowering effects of mesoporous silica SBA-15 in rats after the common bile duct ligation (BDL). We also evaluate the effect of SBA-15 treatments during 28 days of BDL on locomotion and rearing behavior, as well as on the gene expression of Jnk3 and p38alpha (p38α) mitogen-activated protein kinases in the prefrontal corte...
Amine-functionalized mesoporous SBA-15 silica loaded with bovine serum albumin (BSA) has been successfully encapsulated with a thin layer coating of poly(acrylic acid) PAA, with the entrapped BSA being released from the PAA-encapsulated SBA-15 at the higher pH value of 7.4 rather than at the lower pH value of 1.2. This novel drug delivery system has a potential application in the release of pro...
mesoporous silica nanoparticles with unique structure (sba-15) were synthesized and modified by [3-(2-aminoethylamino) propyl] trimethoxysilane (aeaptms). the synthesized nanoparticles were characterized by tga, n2 adsorption, sem, ftir, chn elemental analysis. the total weight loss for the modified sba-15 is 15.2% and thermal analysis revealed that 1.5 mmol aeaptms/1g sba-15 had been grafted...
The chemical vapour deposition technique was applied to obtain Ti/SBA-15 composites. Titanium(IV) tetraisopropoxide (TTIP) and titanium(IV) tetrabutoxide (TNBT) as sources of TiO2 were deposited on mesoporous silica (SBA-15) from the gaseous phase at 180–200 °C treated 250 in air. X-ray diffraction, Fourier-transform infrared spectroscopy, Raman spectroscopy used for structural investigations. ...
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