Research Article

A Novel Synthesis of Gold Nanoparticles Supported on Hybrid Polymer/Metal Oxide as Catalysts for p-Chloronitrobenzene Hydrogenation

Table 4

ICP-AES, TEM mean Au sizes, XPS data after reaction, and TOF in the last cycle of Au/P[BVTACl]-M catalysts in the p-CNB hydrogenation. Reactions conditions: solvent, 25 mL absolute ethanol; temperature, 298 K; stirring rate, 800 rpm; substrate concentration, 0.02 mol L−1; H2 pressure, 20 bar.

CatalystICP-AES
(Au%)

(nm)
Au 4f7/2
(eV)
Au/M 
sup

(min−1)

Au/P[VBTACl]-Al0.4084.20.0040241
Au/P[VBTACl]-Ti0.2283.80.000815
Au/P[VBTACl]-Zr0.0984.00.0013

turnover frequency was defined at 20% of conversion for the last cycle. The values for surface metallic were determinate employing the ICP metal content and metallic dispersion after the last run. of conversion level was detected.