نتایج جستجو برای: fsm 16 so3h folded sheet mesoporous silica

تعداد نتایج: 425408  

خوش اندام, بهنام, صفری کوشالی, فاطمه, یوسف پور, مردعلی,

The purpose of this work was to study the hydrogen adsorption on the surface of mesoporous materials based on silica (SBA-16) modified with palladium via temperature. Since mesoporous silica materials have a high specific surface area, and the ordered mesoporous size of 2-10nm, they are suitable for adsorption and storage of hydrogen. SBA-16 is suitable for this purpose due to its cubic crystal...

The idea of smart inhibitors is based on the principle that an inhibitor is used where needed. This will reduce the use of inhibitors and protect materials in hostile environments. On the other hand, direct addition of the inhibitor within the coating can be harmful, resulting in the loss of inhibitors ability, deterioration in the coating or both of them. An appropriate method for solving thes...

A simple, efficient, and environmentally friendly method has been developed for the synthesis of a series of tricyclic fused pyrazolopyranopyrimidines via a one-pot three-component reaction of barbituric acids, aromatic aldehydes, and 3-methyl-5-pyrazolone in the presence of SBA-Pr-SO3H. SBA-15 mesoporous silica material functionalized with propyl sulfonic acid groups was used as a heterogeneou...

Journal: :The Analyst 2012
Zhe Zhang Dan-feng Lu Qian Liu Zhi-mei Qi Liangbao Yang Jinhuai Liu

Sol-gel copolymer-templated mesoporous silica films with a thickness of 70 nm and interpore spacing of 4.34 nm were fabricated on gold layer covered glass substrates for application as a wavelength-interrogated surface plasmon resonance (SPR) sensor. The resonance wavelength (λ(R)) of the sensor with a solution sample was determined by absorptiometry at a given incident angle. A comparison betw...

2015
U. D. Joshi

Spherical particles of mesoporous silica SBA-16 with cubic Im3m structure were synthesized at low pH using Pluronic F127 as template and TEOS as silica source. The diameter of the spherical particles can be controlled in the range of 0.5–8 μm by varying{Spherical particles of mesoporous silica SBA-16 with cubic Im3m structure were synthesized at low pH using Pluronic F127 as template and TEOS a...

Journal: :Journal of colloid and interface science 2011
Yi-Qi Yeh Hong-Ping Lin Chih-Yuan Tang Chung-Yuan Mou

Free-standing thin sheet form of mesoporous silica materials with perpendicular orientation is a much desired materials for its possible applications in catalysis, mask, and separation. A three component amphiphile system of sodium dodecyl sulfate/hexadecyltrimethylammonium bromide/pluronic-123(C(16)TMAB/SDS/P123) was employed to template the condensation of sodium silicates for the formation o...

Journal: :Tanzania Journal of Engeering and Technology 2022

In bio-refinery and other catalytic reactions, heterogeneous catalysts confer advantage over homogenous due to minimized recovery separation costs. However, templating surfactant solid support for the synthesis of ought consider their cheap sources environmentally friendliness sustainable use. Thus, with vision make process significantly benign, in present work, acids were synthesised from rene...

Journal: :Chemistry 2012
Keiichi Miyasaka Hiroko Hano Yoshiki Kubota Yangzheng Lin Ryong Ryoo Masaki Takata Susumu Kitagawa Alexander V Neimark Osamu Terasaki

We present a modeling scheme to analyze cagelike silica mesoporous crystals based on in situ X-ray diffraction (XRD) data collected during gas adsorption-desorption (physisorption) processes. Nitrogen physisorption on a silica mesoporous crystal of SBA-16 was directly monitored by using synchrotron in situ powder XRD measurements conducted at SPring-8. SBA-16 is a well-ordered mesoporous silica...

Journal: :ACS Catalysis 2022

Herein, an efficient and practical approach for dipolar modification of commercially available solid catalysts is reported. The HMS (hexagonal mesoporous silica)-DMSO decorated with organic layers are designed synthesized by radiation technology under simple accessible conditions. can serve as platforms to introduce various active sites, benefiting from the flexibility diversity layer, which in...

2012
Andreza de Sousa Karynne Cristina de Souza Nelcy D. S. Mohallem Ricardo Geraldo de Sousa

In the last decade, significant research efforts were devoted to obtaining materials with welldefined nanostructures for a wide range of applications (Hamley, 2003; Soler-Illia et al., 2002; Paul & Sharma, 2006). Mesoporous silica materials like M41S, HMS, SBAn, FSM, and MSU, among others, are a fairly new type of material that has pores in the mesoscopic range of 2–50 nm (Wan et al., 2007). Th...

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