Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6633926 | Fuel | 2016 | 8 Pages |
Abstract
A nanofiber composite catalytic membrane for biodiesel production was prepared from phosphotungstic acid (PWA)/poly(vinyl alcohol) (PVA) via electrospinning on a substrate of non-woven fabric. The effects on the nanofiber structure and catalytic performance by PVA concentration and PWA content were studied, respectively. SEM images showed that the surface of PWA/PVA nanofibers was smooth and homogeneous with an average fiber diameter of 157.2Â nm when PVA concentration was 12Â wt% and PWA content was 20Â wt%. FTIR analysis indicated that there existed the interaction between PWA and PVA in the nanofibers. DSC and TG analysis revealed that PWA/PVA nanofiber had a good thermal stability. The nanofiber membrane had a higher activity and better site accessibility than that of commercially ion-exchange resin (NKC-9) because both reaction rate constant (2.647Â minâ1) and effectiveness factor (0.92Â minâ1) of nanofiber membrane were higher than that of NKC-9. The stability test of nanofiber membrane suggested that the conversion could remain stable for 10Â days in a continuous flow-through reactor for biodiesel production.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Wenying Shi, Hongbin Li, Rong Zhou, Xiaohong Qin, Haixia Zhang, Yuheng Su, Qiyun Du,