文献类型：期刊文献

英文题名：Catalytic cracking of waste cooking oil followed with hydro-isomerization for high-quality biofuel production

作者：Jiang, Xia[1] Long, Feng[1] Cao, Xincheng[1] Zhao, Jiaping[1] Liu, Peng[1] Xu, Junming[1,2]

通信作者：Xu, JM[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat,SFA, Natl Engn Lab Biomass Chem,Key & Open Lab Forest, Nanjing 210042, Peoples R China;[2]Nanjing Forestry Univ, CoInnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing, Peoples R China

年份：2022

卷号：345

外文期刊名：JOURNAL OF CLEANER PRODUCTION

收录：;EI(收录号：20220911737372);Scopus(收录号：2-s2.0-85125475465);WOS:【SCI-EXPANDED(收录号:WOS:000784418200008)】；

基金：Our investigation was supported by the "National Key Research and Development Project" (Grant No. 2019YFB1504005).

语种：英文

外文关键词：Waste cooking oil; Pretreatment; Deoxygenation; Desulfurization; Olefin; Isomerization

摘要：Desulfurization and molecular structural modification are critical steps for producing high-quality biofuel. Here, we demonstrated an efficient and environmentally desulfurization process for converting waste cooking oil containing many impurities to low-sulfur biofuel, and this production process could be adopted on a large scale. This study found that composite catalysts (10 wt% base catalyst and 1 wt% cupric nitrate) could effectively remove the impurities (sulfur, chlorine and metal ions) in waste cooking oil during the deoxygenation process. The desulfurization rate was achieved at 94% over Cu(NO3)(3) and K2CO3 (1 wt%:10 wt%). The copper nitrate catalyst converted sulfur species into water and H2S. In addition, to further obtain high-quality biofuel with low cold flow property, the above generated biofuel with low sulfur content was hydro-isomerized over the Ce-Pt/SAPO-11 catalyst. Under the action of the bimetallic catalyst, the isomerization reaction could be carried out at low reaction temperature (300 ?) due to the high olefin content (approximately 43%) in pyrolytic oils. A high quality biofuel production with low sulfur content (lower 10 ppm) and low cold filter plugging point (-20 ?) could be obtained through the above two processes, which all met the ASTM and EN specifications. Overall, a novel method was reported to convert low-quality waste cooking oil to high valuable biofuel.