Journal Article

Electrospun Hollow VO.sub.x/SiO.sub.2 Nanofibers for Oxidative Dehydrogenation of Propane

Xu, Aiju, Wang, Jiang, Ren, Jing, Wang, Shuai, Jia, Meilin, Wu, Kailu, Jia, Hongyan

2024

Overview

A series of hollow VO.sub.x/SiO.sub.2 nanofiber catalysts (nV/S-f) with vanadium content ranging from 0.25 wt% to 4.0 wt% were prepared by electrospinning-calcination, and characterized by ICP-MS, XRD, N.sub.2 adsorption-desorption, SEM, XPS, UV-Vis-DRS and H.sub.2-TPR. Subsequently, the performance of these catalysts in the oxidative dehydrogenation of propane (ODHP) was evaluated. It was found that vanadium species with high dispersivity were obtained when the V content was less than 1.5 wt%. By comparison, 1.0V/S-f catalyst had the best catalytic performance, especially in terms of the propylene selectivity at high-temperature: 77% at 550 °C and 74% at 575 °C. In contrast to the conventional impregnation technique, the catalyst with one-dimensional nanostructure has more catalytic advantages.

• Publisher: Springer
• Subject: Dehydrogenation / Propane / Propylene / Vanadium