餐厨废油制备二代生物柴油的加氢催化与水热催化工艺对比
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中图分类号：X792 文献标志码：A 文章编号：2096-6717（2025）04-0208-11
Comparison of hydrogenation catalysis and hydrothermal catalysis for the preparation of second-generation biodiesel from waste cooking oil
LIANG Zhijie ⋅1 ，LINYukai，ZHANGJing²，MAJun² （1. College of Environment and Ecology，Chongqing University， Chongqing 4Ooo45，P.R. China; 2.Collegeof Environment，Harbin Institute of Technology，Harbin15oo9o，P.R.China）
Abstract：The annual output of waste cooking oil（WCO） in China exceeds 5 milion tons，and its main component is faty acid glycerides.Through appropriate chemical conversion，it can be prepared into secondgeneration biodiesel with fatty hydrocarbons as the main component. Compared with traditional biodiesel （main components： fatty acid methyl esters or fatty acid ethyl esters），second-generation biodiesel can be blended with petrochemical diesel in any ratio for better combustion performance.Currntly，research on preparing secondgeneration biodiesel from WCO mainly includes the hydrogenation catalytic process and the hydrothermal catalytic process.This article compares the reaction mechanisms and reaction parameters of the two processes， and focuses on the research and development of catalyst and carrier selection，temperature，gas and other reaction conditions. It summarizes the applicable scope of each process and provides a basis for selecting suitable processes. At the same time，it also looks forward to the future development direction of the two processes： hydrogenation catalytic process is relatively mature in commercial use，and the focus of future research is to improve the stability of catalysts and process economics；hydrothermal catalytic process，as an emerging technology capable of in-situ hydrogen production，should focus on in-depth research on green and effcient hydrothermal catalysts and continuous flow hydrothermal reactions in the future，so as to promote the industrial application of hydrothermal catalytic process.
Keywords： wastecooking oil；second-generation biodiesel； hydrogenation；hydrothermal deoxygenation；insitu hydrogen production
当今世界面临化石能源枯竭和环境污染的双重压力，目前全球一次性能源消费中，石油、煤炭和天然气分别占据了能源结构的 37.5%.25.5% 和24.3%[1] ，随着化石能源的消耗，寻找新的可再生能源，以维持人类生存和社会可持续发展势在必行。（剩余27386字）
