文献类型：期刊文献

英文题名：Thermochemical conversion of waste acidic oil into hydrocarbon products over basic composite catalysts

作者：Long, Feng[1,2,3,4] Li, Fanglin[1,2,3,4] Zhai, Qiaolong[1,2,3,4] Wang, Fei[1,2,3,4] Xu, Junming[1,2,3,4,5]

第一作者：Long, Feng

通信作者：Xu, JM[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat, Nanjing, Jiangsu, Peoples R China;[2]Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing, Jiangsu, Peoples R China;[3]Natl Forestry & Grassland Adm, Key Lab Chem Engn Forest Prod, Beijing, Peoples R China;[4]Natl Engn Lab Biomass Chem Utilizat, Nanjing, Jiangsu, Peoples R China;[5]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Jiangsu, Peoples R China

年份：2019

卷号：234

起止页码：105-112

外文期刊名：JOURNAL OF CLEANER PRODUCTION

收录：;EI(收录号：20192607104728);Scopus(收录号：2-s2.0-85067816692);WOS:【SCI-EXPANDED(收录号:WOS:000483406000010)】；

基金：The work described was supported by "Fundamental studies for stepwise formation of bio jet-fuel fromwaste triglycerides through thermo-chemical conversion" (31770612).

语种：英文

外文关键词：Triglycerides; Pyrolysis; Basic composite catalyst; Deoxygenation; Activation energy

摘要：Removal of oxygen atoms from triglycerides is the most important step in their conversion into hydrocarbons. Basic catalysts have proven to be highly efficient in deoxygenation, whereby the oxygen atoms are removed in the form of CO and CO2, yielding pyrolytic oil with acid number below 10 mg KOH.g(-1). We have now investigated the deoxygenation abilities of composite basic catalysts during the thermochemical conversion process. The dynamics of the catalytic cracking reaction using metal oxides, such as calcium oxide, in the presence of sodium carbonate, has been tested. According to thermogravimetric analysis (TGA) data, the activation energy for catalytic cracking was influenced by cations. By using calcium oxide as a catalyst, the activation energy was reduced from 260 kJ/mol to 185 kJ/mol, leading to a reduction in the reaction temperature of approximately 20-40 degrees C. The yield of the cracked liquid fraction was of the order of 66-70%, more than 90% of which could be recovered as liquid hydrocarbons. The results presented herein indicate an alternative reaction pathway, allowing thermochemical conversion to be conducted at a lower operational temperature, which would be beneficial for industrial production with lower energy consumption. (C) 2019 Elsevier Ltd. All rights reserved.