نتایج جستجو برای: silica supported
تعداد نتایج: 229959 فیلتر نتایج به سال:
A literature survey was performed to evaluate the state-of-the-art membrane systems for CO2/CH4 separation which is critical in the natural gas industry. The systems that were reviewed included zeolite, carbon, polymeric, mixed matrix, amorphous silica, and supported ionic liquid membranes. Supported ionic liquid CO2/CH4 selective membranes were synthesized in our laboratory by applying room te...
A Zn-exchanged heteropolyacid supported onto silica (Zn-HPW/SiO2) activates methane at 25 °C into Zn-methyl. At higher temperatures and with CH4/O2 or CH4/CO2, it gives methanol and acetic acid respectively.
Extensive solid-state NMR analyses unambiguously determine the formation of silica supported W bis-methylidene methyl species by reaction of the corresponding methyl carbyne with trimethylphosphine or a cyclic olefin.
Radical-induced addition-fragmentation processes were efficiently used for surface modification of fumed silica, and Z-supported solid CTAs could be reused in presence of excess sacrificial thermal initiator.
Copper nitride nanoparticles supported on a mesoporous superparamagnetic silica microsphere exhibit superior activity toward the Huisgen cycloaddition of azides and alkynes. The nitride catalyst offers significant advantages over homogeneous Cu catalysts.
We present the first report on bioinspired silica - produced using a green method - supported carbonic anhydrase for carbon capture and demonstrate significantly improved carbon capture efficiency and stability relevant to flue gas temperatures.
Tungsten carbide nanoparticles were supported on a new 3D mesoporous carbon replicated from commercial silica and exhibited selectivity as high as 72.9% for the catalytic conversion of cellulose into ethylene glycol.
Self-supported helical architectures of Ia3[combining macron]d In(2)O(3) and Fd3[combining macron]m Co(3)O(4) are fabricated for the first time using the pore-swollen chiral silica as template.
On the basis of the concept of site isolation in electrochemical reactions, we have successfully demonstrated acceleration of the deprotonation step in anodic methoxylation of fluoroethyl phenyl sulfides using silica gel supported bases.
A silica-supported CdS nanoparticle photocatalyst exhibits excellent visible-light driven H2 evolution activity without the use of a cocatalyst. The apparent quantum yield can reach 42% under 420 nm light illumination.
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