化工学报
化工學報
화공학보
JOURNAL OF CHEMICAL INDUSY AND ENGINEERING (CHINA)
2015年
5期
1874-1882
,共9页
离子液体%混合溶剂%生物质%预处理%热解
離子液體%混閤溶劑%生物質%預處理%熱解
리자액체%혼합용제%생물질%예처리%열해
ionic liquids%mixture solvent%biomass%pretreatment%pyrolysis
使用1-丁基-3-甲基咪唑氯化盐([Bmim]Cl)、1-丁基-3-甲基咪唑四氟硼酸盐([Bmim]BF4)和1-丁基-1-甲基吡咯烷氯化物([Bmpy]Cl)与水并添加固体酸催化剂Nafion?NR50组成的混合溶剂对孟宗竹进行预处理比较研究,分析了处理后孟宗竹的成分含有量、结晶结构和表面形貌等变化。把处理后的孟宗竹应用于热解研究中,通过TG-DTA和GC-TCD的分析,发现[Bmim]Cl离子液体的混合溶剂处理后的孟宗竹更易于热解反应;此外热解产物更多地从焦炭转化成气体产物;其中添加固体酸的混合溶剂预处理后的1.0 g孟宗竹样品中,在热解反应后焦炭含量为0.19 g,低于未处理样品的0.24 g;生成约0.12 g气体产物大于未处理样品的0.04 g。并探讨了离子液体混合溶剂作为一种新型前处理溶剂应用于生物质热解研究中的潜力和问题。
使用1-丁基-3-甲基咪唑氯化鹽([Bmim]Cl)、1-丁基-3-甲基咪唑四氟硼痠鹽([Bmim]BF4)和1-丁基-1-甲基吡咯烷氯化物([Bmpy]Cl)與水併添加固體痠催化劑Nafion?NR50組成的混閤溶劑對孟宗竹進行預處理比較研究,分析瞭處理後孟宗竹的成分含有量、結晶結構和錶麵形貌等變化。把處理後的孟宗竹應用于熱解研究中,通過TG-DTA和GC-TCD的分析,髮現[Bmim]Cl離子液體的混閤溶劑處理後的孟宗竹更易于熱解反應;此外熱解產物更多地從焦炭轉化成氣體產物;其中添加固體痠的混閤溶劑預處理後的1.0 g孟宗竹樣品中,在熱解反應後焦炭含量為0.19 g,低于未處理樣品的0.24 g;生成約0.12 g氣體產物大于未處理樣品的0.04 g。併探討瞭離子液體混閤溶劑作為一種新型前處理溶劑應用于生物質熱解研究中的潛力和問題。
사용1-정기-3-갑기미서록화염([Bmim]Cl)、1-정기-3-갑기미서사불붕산염([Bmim]BF4)화1-정기-1-갑기필각완록화물([Bmpy]Cl)여수병첨가고체산최화제Nafion?NR50조성적혼합용제대맹종죽진행예처리비교연구,분석료처리후맹종죽적성분함유량、결정결구화표면형모등변화。파처리후적맹종죽응용우열해연구중,통과TG-DTA화GC-TCD적분석,발현[Bmim]Cl리자액체적혼합용제처리후적맹종죽경역우열해반응;차외열해산물경다지종초탄전화성기체산물;기중첨가고체산적혼합용제예처리후적1.0 g맹종죽양품중,재열해반응후초탄함량위0.19 g,저우미처리양품적0.24 g;생성약0.12 g기체산물대우미처리양품적0.04 g。병탐토료리자액체혼합용제작위일충신형전처리용제응용우생물질열해연구중적잠력화문제。
The pyrolysis study of the ionic liquid (IL)-H2O mixtures pretreated bamboo (Phyllostachys edulis) was investigated. 1-Butyl-3-methylimidazolium chloride ([Bmim]Cl)-H2O, 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF4)-H2O and 1-butyl-3-methyl pyrrolidinium chloride ([Bmpy]Cl) -H2O with or without solid acid catalyst (Nafion?NR50) were used in the pretreatment process. The composition analysis result of untreated bamboo and pretreated bamboo were compared. XRD and SEM result were analyzed to explain the effect of ILs mixture on cellulose crystalline structures and surface structures. According to the result of TG-DTA and GC-TCD, the sample pretreated with [Bmim]Cl-H2O mixture was used in the pyrolysis process to produce more gaseous products and low char. About 0.12 g gaseous products and 0.19 g char were produced from 1.0 g sample pretreated with [Bmim]Cl-H2O mixture and added solid acid catalyst, different from the result of untreated sample, 0.04 g gaseous products and 0.24 g char. The potential and problems of IL-H2O mixture pretreatment used in thermal chemical conversion methods were discussed.