Influence of CaO and HZSM-5 on oxygen migration in Chlorella vulgaris polysaccharide pyrolysis

作     者：Xiuli Zhang Chunhu Li Anhong Tian Qingjie Guo Kelei Huang 

作者机构：Key Laboratory of Clean Chemical Processing of Shandong ProvinceCollege of Chemical EngineeringQingdao University of Science and TechnologyQingdaoShandong 266042People’s Republic of China Key Laboratory of Marine Chemistry Theory and Engineering Technology of Ministry of EducationCollege of Chemistry and Chemical EngineeringOcean University of ChinaQingdao 266100ShandongPeople’s Republic of China 

出 版 物：《Carbon Resources Conversion》 (碳资源转化（英文）)

年 卷 期：2019年第2卷第2期

页      面：111-116页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：supported by the introduction of scientific and technological innovation team of Ningxia Hui Autonomous Region(2016) the Key Research&Development Program of Shandong Province(2018GGX104013) 

主　　题：Chlorella vulgaris polysaccharides CaO HZSM-5 Pyrolysis Organic compounds Deoxidation Reaction paths 

摘      要：With polysaccharides of Chlorella pyrenoidosa as the raw material,the effects of CaO and HZSM-5 on the yield of bio-oil and the oxygen content in each phase in the pyrolysis of Chlorella vulgaris polysaccharides(CVP),which occurred in a tube furnace at 600℃,were comprehensively *** reaction path of deoxidation was also analyzed by TG,GC and *** GC-MS analysis of liquids showed that liquids from the pyrolysis of chlorella polysaccharides included a range of light oxygenated compounds(e.g.,furans,ketones and phenols),and the oxygen content of furan compounds decreased significantly with CaO and *** with the direct pyrolysis of polysaccharides(CVP),the catalytic pyrolysis contributed to the decrease in the oxygen content of organic components by 7.32%and 5.76%.The GC analysis showed that there was a remarkable downtrend in the release of oxygen-containing gas(CO and CO_(2)),and the emission of CO_(2) decreased from 53.11%to 32.92%.The results of the thermogravimetric analysis indicated that the reaction paths of deoxidation in the pyrolysis process of polysaccharides(CVP)with CaO and HZSM-5 varied from those of the direct pyrolysis process:the catalytic pyrolysis with HZSM-5 promoted the conversion of carbohydrate from furans to aromatics over strong acid sites,which was consistent with previous studies;CaO not only acted as a catalyst but also participated in the reaction to change the reaction *** results and findings can help to further understand the thermochemical utilization of CPP for bio-oil.