Re( b ~y ) ( C O ) ~B r l (bpy = 2,2'-bipyridine) and [Re(terpy)(CO),Br] (terpy = 2,2' : 6',2"-terpyridine) complexes can work as efficient catalysts for C02 electroreduction t o produce formic acid and CO in an aqueous medium when incorporated into a coated Nafion membrane.
A series of TiO2 catalysts loaded with transition metals were prepared by photodeposition. The activity order for these catalysts in the title reaction was as follows: Pt/TiO2>Rh/TiO2>Pd/TiO2>Ru/TiO2>Ir/TiO2>TiO2. Upon heat treatment the activities of all the metal/TiO2 catalysts were enhanced, but the above sequence was unaltered.
Alcohols in cyclohexane give their methyl ethers in high yields by the use of a combination of dimethyl sulfate and alumina. Some diols and dicarboxylic acids adsorbed on alumina react with dimethyl sulfate and produce the corresponding monomethyl ethers and esters in high selectivities.
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