改性石墨烯对典型生物质热解产物分布作用影响  

Effect of modified graphene on distribution of pyrolysis products of typical biomass

作　　者：李延吉[1] 李想[1] 于梦竹 何强 倪蒙 杨天华[1] 李润东[1] LI Yanji;LI Xiang;YU Mengzhu;HE Qiang;NI Meng;YANG Tianhua;LI Rundong(Clean Energy K ey Laboratory o f Liaoning, Shenyang Aerospace U niversity, Shenyang 110136, China)

机构地区：[1]沈阳航空航天大学清洁能源利用辽宁省重点实验室,辽宁沈阳110136

出　　处：《热力发电》2019年第2期53-58,共6页Thermal Power Generation

基　　金：国家重点基础研究发展计划项目(2011CB201506);辽宁省教育厅项目(L201707)~~

摘　　要：为解决固体废物处理、处置过程中可再生能源的转化与废物的利用问题,本课题利用热裂解-色谱质谱联用仪(Py-GC/MS)研究分别以氧化石墨烯与石墨烯分散液为原料制备Ni改性石墨烯对生物质热解产物的影响。结果显示:改性石墨烯促进了纤维素热解主要产物1,6-脱水吡喃葡萄糖的生成,随负载量增加效果更明显;C1—C4烃类产率受改性石墨烯影响很大,C5—C8烃类产率略有提高;经改性石墨烯催化木质素热解产物中酚类产率明显提高,经6%Ni-GO催化酚类产率达最大;醇类产率下降,酚类产率上升表明改性石墨烯对羟基的脱除与重组具有一定影响。此外,改性石墨烯还促进了结构较为简单的长碳链产物生成。To solve the problem occurs during renewable energy conversion and waste utilization in the process of solid waste treatment and disposal, the effect of Ni-modified graphene on pyrolysis products components of typical combustible solid waste were studied, by pyrolysis-chromatography mass spectrometry(Py-GC/MS). Graphene oxide and dispersion liquid of reduced graphene oxide were selected for preparation of catalysts. The results show that, the modified graphene promoted the formation of 1,6-dehydrated glucose, the main product of cellulose pyrolysis, and the effect was more obvious with the increase of the loading amount. The modified grapheme gave higher selectivity toward C1-C4 hydrocarbons and slightly to C5-C8 hydrocarbons. Catalyzed by the modified grapheme, lignin produced more phenol during pyrolysis, and the yield of phenol reached the highest when adding 6%Ni-RGO. The yield of alcohols decreased, while the yield of phenols increased, indicating the modified graphene played a certain role in removal and recombination of hydroxyl groups. In addition, the modified graphene promoted the production of long carbon chain products with simple structure.

关 键 词：生物质 热解产物分布 热裂解-色谱质谱联用仪 氧化石墨烯 石墨烯 

分 类 号：X705[环境科学与工程—环境工程]