Key Lab. of Hollow Fiber Membrane Material and Processes of Ministry of Education, School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300160, PR China.
Bioresour Technol. 2010 Mar;101(5):1501-5. doi: 10.1016/j.biortech.2009.07.014. Epub 2009 Aug 4.
A novel organic-inorganic hybrid membrane as heterogeneous acid catalyst for biodiesel production was prepared from zirconium sulfate (Zr(SO4)2) and sulfonated poly(vinyl alcohol) (SPVA). The structure and properties of the hybrid catalytic membrane were investigated by means of Fourier transform infrared spectroscopy (FTIR), differential scanning calorimeter (DSC), thermogravimetry (TG), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The catalytic performance of the hybrid membranes was tested by the esterification of the acidified oil with methanol. It was found that the Zr(SO4)2 particles were better dispersed in SPVA matrix as a result of the stronger interaction between Zr(SO4)2 and SPVA compared with Zr(SO4)2/poly(vinyl alcohol) (PVA) hybrid membrane. Esterification results showed that the conversions of free fatty acid (FFA) in acidified oil were 94.5% and 81.2% for Zr(SO4)2/SPVA and Zr(SO4)2/PVA catalytic membranes, respectively. The stability of Zr(SO4)2/SPVA catalytic membrane is superior to Zr(SO4)2/PVA catalytic membrane.
一种新型的有机-无机杂化膜被制备出来作为用于生物柴油生产的非均相酸催化剂，其由硫酸锆（Zr(SO4)2）和磺化聚（乙烯醇）（SPVA）组成。通过傅里叶变换红外光谱（FTIR）、差示扫描量热法（DSC）、热重分析（TG）、透射电子显微镜（TEM）和 X 射线光电子能谱（XPS）对杂化催化膜的结构和性能进行了研究。通过酸化油与甲醇的酯化反应测试了杂化膜的催化性能。结果表明，与 Zr(SO4)2/聚（乙烯醇）（PVA）杂化膜相比，Zr(SO4)2 与 SPVA 之间的相互作用更强，导致 Zr(SO4)2 颗粒在 SPVA 基体中得到更好的分散。酯化结果表明，对于 Zr(SO4)2/SPVA 和 Zr(SO4)2/PVA 催化膜，酸化油中游离脂肪酸（FFA）的转化率分别为 94.5%和 81.2%。Zr(SO4)2/SPVA 催化膜的稳定性优于 Zr(SO4)2/PVA 催化膜。
