Fabrication of Cd_xZn_1−xS@VPO (x = 0.2) Nanocomposites for n-Butane Selective Oxidation Toward Maleic Anhydride

Vanadium phosphorous oxide (VPO) catalysts have been recognized as heterogeneous catalyst for selective oxidation of low-carbon alkanes i.e., n-butane toward maleic anhydride. This process has widely gained attention globally due to its highly selective and cost-effective process. Herein, we employed Cd₀.₂Zn₀.₈S as a support for the VPO catalyst and evaluated its n-butane catalytic performance. Compared to the unpromoted catalyst (Blank-VPO), a higher n-butane conversion and MA yield were successfully obtained from the promoted catalyst (Cd₀.₂Zn₀.₈S@VPO). Interestingly, it reduces the byproducts, i.e., CO₂ and CO emission. Characterization methods such as TGA, XRD, EDS, SEM, FTIR, NH₃-TPD, XPS, TEM, and Raman spectroscopy were used to characterize the Cd₀.₂Zn₀.₈S, VPO precursor and catalyst. Graphical Abstract: [Figure not available: see fulltext.]