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Catalytic activity of supported solid catalysts for phenol hydroxylation

“…Due to the encapsulation, complexes become more thermally stable. A very small weight loss was observed and it may be due to the presence of low metal complex in the zeolite cavities [1]. This is in agreement with the low metal content as estimated by the ICP instrument.…”

“…The results are tabulated in Table 5, which shows that the decomposition of H 2 O 2 is slow initially but increases with time. This is due to the fact that the encapsulated complex used requires relatively longer time to exhibit maximum catalytic activity as the number of metal centers is less compared with that of the neat complex [25]. Hence increasing the duration of the reaction is a very effective way of carrying out the reaction with H 2 O 2 as the source of oxygen.…”

“…The supported catalysts enhance their thermal stability, selectivity, recyclability and easy separation from reaction products. The non corrosive, environment friendly and economically viable nature of the zeolite catalysed reactions also lead them to use in various industrial processes such as catalytic cracking, hydrocracking, isomerization and oxidation [1]. Zeolite encapsulated metal complexes are one of such materials for heterogeneization of homogeneous catalysts.…”

From Zeolite to Host-Guest Nanocomposite Materials

“…Besides above mentioned catalytic application of HGNMs, these novel materials can catalyze other important reactions in good yield such as: hydroxylation [208][209][210][211][212][213][214], oxidation of sulfides and ethers [215][216][217][218][219] and epoxidation [220][221][222]. Table 10.…”

Cobalt salophen complex supported on magnetic nanoparticles as an efficient reusable catalyst for oxidation of benzylic alcohols

“…Transition metal Schiff base complexes have attracted much interest in the field of catalysis because of their reversible bonding oxygen ability and high activities in the oxidation reactions [1][2][3][4][5][6][7] . However, these catalysts are generally homogeneous and are not easily recoverable after oxidation.…”