We studied the effect of two types of mesoporous silica nanoparticles, MCM-41 and SBA-15, on mitochondrial O 2 consumption (respiration) in HL-60 (myeloid) cells, Jurkat (lymphoid) cells, and isolated mitochondria. SBA-15 inhibited cellular respiration at 25-500 microg/mL; the inhibition was concentration-dependent and time-dependent. The cellular ATP profile paralleled that of respiration. MCM...

The presence of the heterogeneous mesoporous Al-MCM-41 catalyst remarkably accelerated the cyanosilylation of various aldehydes and ketones with trialkylsilyl cyanide, giving the corresponding cyanohydrin silyl ethers in quantitative yields under mild reaction conditions.

Mesoporous MCM-41 molecular sieves substituted with various amounts of Cu(II) and Al(III) were synthesized by the hydrothermal method. The resultant materials were characterized by XRD, XANES, surface area and pore size measurement, EPR and 27Al solid state NMR. The Cu(II)-substituted MCM-41 was found to be an efficient catalyst in the oxidation of trimethylphenol (TMP) to trimethylbenzoquinone...

Catalytic hydrogenation of levulinic acid (LA) to γ-valerolactone (GVL) was investigated over four different types mesoporous silica (SBA-15, MCM-48, MCM-41, and KIT-6) supported copper (5 wt.%) catalysts. The Cu incorporated into supports by a sequential impregnation method. A detailed investigation the support structure–activity correlation performance catalysts in LA conversion studied. Deta...

the mesoporous molecular sieve mcm-41 was covalently grafted with 3-chloropropyl trimethoxylsilane and then was reacted with [cr(salpr)(h2o)]cl, (salpr = n,n'-bis(3-salicylidenaminopropyl)amine) to afford mcm-41 containing cr(salpr) moiety, cr(salpr)mcm-41. powder x-ray diffraction and nitrogen adsorption-desorption analyses revealed that not only the textural characteristics of the support wer...

The selective conversion of citronellal to menthols, with good diastereoselectivities to (-)-menthol for the case of (+)-citronellal as starting material, can effectively be carried out in a one-step reaction under microwave irradiation catalysed by supported nanoparticles on mesoporous materials. 2% Pt/Ga-MCM-41 was found to be the optimum catalyst for the reaction, with a quantitative convers...

The Ni-based catalyst has been intensively studied for CO methanation. Here, MCM-41 is selected as support to prepare xNi/MCM-41 catalysts with various Ni contents and the catalytic performance methanation in a slurry-bed reactor investigated under different reaction conditions. conversion gradually increases temperature or pressure rises. As content increases, specific surface area pore volume...