نتایج جستجو برای: heterogeneous catalytic
تعداد نتایج: 202404 فیلتر نتایج به سال:
In this review the most important results achieved in recent 12–15 years are summarized focusing on heterogenous catalytic hydrogenations over transition metals (Pd, Pt, Ru, Rh, La), as well application of palladium, copper and other a molecular sieve (4A) support several organic chemical syntheses liquid phase.
New silica supported Schiff base ligands were prepared by the condensation reaction of 4,6-diacetylresorcinol with silica-gel derivatives, which modified with 3-aminopropyltriethoxysilane and N-(2-aminoethyl) -3-aminopropyltrimethoxysilane. Metal ion uptake capacities of these compounds were studied towards of selected transition metal (Cd(II), Cu(II), Co(II), Mn(II), Pb(II) and Ni(II)) cations...
Four areas for the future directions of catalysis science were discussed. (1) There is a need for correlation of structure, dynamical rearrangements, transition states and reaction intermediates of enzyme, heterogeneous and homogeneous catalytic systems through investigations of the same reactions under similar experimental conditions. Better understanding of the existing heterogeneous chiral c...
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