نتایج جستجو برای: functionalized sba 15

تعداد نتایج: 518694  

Journal: :Chemical communications 2004
Yanqin Wang Bodo Zibrowius Chia-Min Yang Bernd Spliethoff Ferdi Schüth

Ordered mesoporous silicas SBA-15 with high loadings of pendant vinyl groups have been synthesized via co-condensation of tetraethoxysilane (TEOS) and triethoxyvinylsilane (TEVS) templated with a triblock copolymer.

Journal: :Iranian journal of pharmaceutical research : IJPR 2015
Ghodsi Mohammadi Ziarani Shima Asadi Sakineh Faramarzi Massoud Amanlou

Sulfonic acid functionalized SBA-15 (SBA-Pr-SO3H) with pore size 6 nm as an efficient heterogeneous nanoporous solid acid catalyst exhibited good catalytic activity in the Biginelli-like reaction in the synthesis of spiroheterobicyclic rings with good yield and good recyclability. Spiro-pyrimidinethiones/spiro-pyrimidinones-barbituric acid derivatives were synthesized in a simple and efficient ...

Journal: :Brazilian Journal of Biology 2022

Abstract Enzymes immobilized onto substrates with excellent selectivity and activity show a high stability can withstand extreme experimental conditions, their performance has been shown to be retained after repeated uses. Applications of enzymes in various fields benefit from unique characteristics. Common methods, including adsorption, encapsulation, covalent attachment crosslinking, other em...

Journal: :Chemical Engineering Journal 2021

The adsorption of U(VI) from natural mine water (i.e. containing Na+, K+, Ca2+, Mg2+ as major cations, and Cl?, SO42? HCO3? anions) was investigated in dynamic mode using packed column high-capacity sorbents modified by NH2 organic moieties. use columns effective removing trace amounts species water. capacity obtained with amine functionalized SBA-15, a mesostructured silica, compared those com...

2017
Veridiana Gomes Virginio Natalia Costantin Bandeira Fernanda Munhoz dos Anjos Leal Marcelo Lancellotti Arnaldo Zaha Henrique Bunselmeyer Ferreira

The adjuvant potential of two mesoporous silica nanoparticles (MSNs), SBa-15 and SBa-16, was assessed in combination with a recombinant HSP70 surface polypeptide domain from Mycoplasma hyopneumoniae, the etiological agent of porcine enzootic pneumonia (PEP). The recombinant antigen (HSP70212-600), previously shown as immunogenic in formulation with classic adjuvants, was used to immunize BALB/c...

Journal: :Catalysts 2023

Mesoporous Cu(Fe)/SBA-15 catalysts were prepared with distinct metal loadings of ca. 2–10 wt.%. A detailed set characterizations using X-ray diffraction (XRD), electron paramagnetic resonance (EPR), transmission microscopy (TEM), scanning coupled to energy dispersive spectroscopy (SEM-EDS), Mössbauer spectroscopy, photoelectron (XPS) and Raman was performed correlate the relationship among stru...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2011
Tomoyasu Noji Chihiro Kamidaki Keisuke Kawakami Jian-Ren Shen Tsutomu Kajino Yoshiaki Fukushima Takeshi Sekitoh Shigeru Itoh

An oxygen-evolving photosynthetic reaction center complex (PSII) was adsorbed into nanopores in SBA, a mesoporous silica compound. We purified the dimer of PSII complex from a thermophilic cyanobacterium, Thermosynechococcus vulcanus, which grows optimally at 57 °C. The thermally stable PSII dimeric complex has a diameter of 20 nm and a molecular mass of 756 kDa and binds more than 60 chlorophy...

2016
Changchun Ji Xin Huang Lei Li Fukui Xiao Ning Zhao Wei Wei

Recently, amine-functionalized materials as a prospective chemical sorbent for post combustion CO₂ capture have gained great interest. However, the amine grafting for the traditional MCM-41, SBA-15, pore-expanded MCM-41 or SBA-15 supports can cause the pore volume and specific surface area of sorbents to decrease, significantly affecting the CO₂ adsorption-desorption dynamics. To overcome this ...

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