CAJ | 학술논문

以Na_2 CO_3、K_2 CO_3、NaOH为催化剂,在375 ~ 400℃的超临界水中进行蔗渣的液化反应.考察了液固比、反应时间、反应温度和催化剂对蔗渣液化的影响.在380℃、液固比18∶ 1(质量比)、反应时间20min条件下,NaOH或Na_2 CO_3催化剂用量为1%时, 液化残渣率降到10%以下,而在同样条件下,K_2 CO_3催化剂用量为3%时,液化反应的残渣率降到7%以下.对液化产物进行了表征.GC - MS分析表明,液体产物的主要组成是含环状结构的酮和一些含甲基、羟甲基等官能团的苯酚类化合物,气体产物主要为C_1～C_4烷烃和CO、CO_2、H_2等无机气体,且其组成因液化温度而变化.液化残渣经过FT - IR分析和扫描电镜分析,发现其主要由焦炭以及尚未完全分解的木质素组成.
이Na_2 CO_3、K_2 CO_3、NaOH위최화제,재375 ~ 400℃적초림계수중진행자사적액화반응.고찰료액고비、반응시간、반응온도화최화제대자사액화적영향.재380℃、액고비18∶ 1(질량비)、반응시간20min조건하,NaOH혹Na_2 CO_3최화제용량위1%시, 액화잔사솔강도10%이하,이재동양조건하,K_2 CO_3최화제용량위3%시,액화반응적잔사솔강도7%이하.대액화산물진행료표정.GC - MS분석표명,액체산물적주요조성시함배상결구적동화일사함갑기、간갑기등관능단적분분류화합물,기체산물주요위C_1～C_4완경화CO、CO_2、H_2등무궤기체,차기조성인액화온도이변화.액화잔사경과FT - IR분석화소묘전경분석,발현기주요유초탄이급상미완전분해적목질소조성.
Bagasse was liquefied in supercritical water at 375-400 ℃,in the presence of Na_2CO_3,K_2CO_3,or NaOH as catalyst.The effects of liquid ratio,time,temperature and catalyst on the liquefaction were investigated.The minimum residue yield of 10 % was achieved at 20 min when liquefaction was conducted at 380 ℃ with liquid-solid ratio 18 : 1 and Na_2C0_3 (or NaOH) dosage 1 %.The residue was below 7 % under similar condition when the dosage of K_2CO_3 was 3 %.Liquid products of the reaction comprised of cyclic ketone and various phenolic compounds containing methyl and hydroxyl groups.Gaseous products formed during liquefaction,which were C_1-C_4 hydrocarbons,CO,CO_2 and H_2,varied with temperature.Solid residues were composed of char and residual lignin,according to FT-IR and SEM analysis.