PREPARATION, CHARACTERIZATION AND CATALYTIC ACTIVITY OF CuO/TS-1 ON BENZENE HYDROXYLATION REACTION

Makara Seri Sains

关键词: acetic acid;    benzene hydroxylation;    CuO/TS-1;    TS-1;   

DOI  :  

来源: DOAJ

【 摘 要 】

CuO/TS-1 catalysts have been prepared and tested in the benzene hydroxylation. TS-1 was synthesized by hydrothermalmethod, while CuO/TS-1 was prepared by impregnation method using Cu(NO)2.3H2O as precursor. Catalysts werecharacterized by using X-ray diffraction (XRD), infrared spectroscopy (IR), and N2 adsorption-desorption techniques.The catalytic activity was tested in the hydroxylation reaction of benzene. The products were analyzed using gaschromatography. Catalyst characterization by XRD and IR techniques have showed that the catalyst structure was aMFI type of zeolite. XRD pattern have showed the orthorombic structure and indicated the presence of CuOaggregation. The results of the pyridine adsorption have found that the acidity of TS-1 and CuO/TS-1 were a Lewis acidand it’s increased with an increasing amount of CuO loading. The results of nitrogen adsorption analysis have showeddecreasing of surface areas of catalyst with increasing amount of CuO loading. The optimum conditions of benzenehydroxylation was observed by 1%CuO/TS-1 catalyst at 70 °C, reaction time 2 h and acetic acid as the solvent yielded27.6% of phenol with phenol selectivity was 75.5%.

【 授权许可】

Unknown