Fabrication of spent FCC catalyst composites by loaded V2O5 and TiO2 and their comparative photocatalytic activities

Jiasheng Xu,Te Zhang

doi:10.1038/s41598-019-47155-y

Abstract

The spent fluid catalytic cracking catalyst (FCC) has been loaded with different content of V2O5 and TiO2 through a modified-impregnation method. X-ray Diffraction (XRD), ultraviolet-visible spectrophotometry (UV-Vis), Scanning Electron Microscope (SEM), and Fourier Transform Infrared spectroscopy (FT-IR) are used to characterize the structure and morphology of these samples. Their photocatalytic activity was evaluated by degradation of methylene blue (MB) solution under 300 W Xenon lamp irradiation. The interplanar spacing of the zeolite Y (111) plane is affected by the amount of the loaded V2O5 on spent FCC catalyst. The (111) plane of spent FCC catalyst loaded with V2O5 and TiO2 sample is 1.404 nm, which is higher than that of the zeolite Y (1.395 nm). The amount of adsorption of MB and the photocatalytic activity for the degradation increased with increasing the interplanar spacing of the (111) plane of sample. We fabricated of spent FCC catalyst composites by loaded V2O5 and TiO2, which effectively solved the spent FCC catalyst disposal problem. The efficiency of the developed sample provides a potentially economical way of degrading MB.

Highlights

In the petroleum refining industry, the fluid catalytic cracking (FCC) process is one of the most important processes[1,2,3,4,5,6,7,8]
The advantage of photocatalytic degradation of methylene blue (MB) by use the spent fluid catalytic cracking catalyst (FCC) catalyst to supported TiO2 and V2O5 was the modulation of properties of the semiconductors by changing the valance and conduction bands in order to be activated under light irradiation[22]
The photocatalytic activity of the V-Ti-2/FCC sample is analyzed by photocatalytic degradation of the MB solution

Summary

OPEN Fabrication of spent FCC catalyst

Received: 13 May 2019 Accepted: 11 July 2019 Published: xx xx xxxx composites by loaded V2O5 and TiO2 and their comparative photocatalytic activities. The advantage of photocatalytic degradation of MB by use the spent FCC catalyst to supported TiO2 and V2O5 was the modulation of properties of the semiconductors by changing the valance and conduction bands in order to be activated under light irradiation[22]. The diffraction peaks located at 6.3°, 10.3°, 12.1° and 15.91° are the characteristic peaks of the spent FCC catalyst sample (Fig. 2a), which match well with the standard zeolite Y phase (JPDS card No 75–1551). The low-magnification SEM image (Fig. 4d) of the Ti/FCC sample reveals that the smooth surface of the spent FCC catalyst is covered with TiO2 particles. It was found that the methylene blue degradation efficiency of V-Ti-2/FCC was still up to ~96%, ~95%, ~95% and ~89%, respectively

Conclusions

Experimental Section

Additional Information