Guo, Feng; Xiu, Zhi-Long; Liang, Zhi-Xia - In: Applied Energy 98 (2012) C, pp. 47-52
Biodiesel was produced from acidified soybean soapstocks by using lignin-derived carbonaceous catalyst (LCC). LCC was a … solid acidic catalyst prepared by direct sulfonation of residual lignin from Xanthoceras sorbifolia Bunge hulls. The … textural properties of the catalyst were characterized by 13C MAS NMR, X-ray diffraction, FT-IR, elemental analysis and BET …