以离子液体1-丁基-3-甲基咪唑氯(IL)为添加剂、考察5A-Ca型分子筛、HNO3及FeCl3等催化剂对甲基纤维素(MC)微波裂解过程的影响.实验研究了IL用量、微波功率、作用时间及催化剂对MC裂解的影响,并通过GC-MS联用仪研究了微波裂解液体产物分布的变化.结果表明,不同催化剂导致了不同的液体产物分布,其中5A-Ca型分子筛催化剂可促进小分子物质的形成,同时使生物质油中的含氧量从37.43％降低到了34.82％; HNO3催化剂促进了醋酸甲酯、正丁醇及苯甲酸甲酯的生成；FeCl3作为催化剂时,促进了糠醛及5-甲基糠醛的生成.通过比较常规热解与微波裂解,发现微波裂解能在较短的时间内得到高的生物质油产率.%Ionic liquid l-butyl-3-methylimidazolium chloride (IL) was used as an additive for methyl cellulose (MC) pyrolysis under microwave irradiation. The effects of reaction conditions, including IL amount, microwave power and reaction time and catalysts FeCl3 , HNO3 and 5A-Ca molecular sieve on MC pyrolysis were studied. The results show that components in bio-oils obtained vary with the catalysts. 5A-Ca catalyst could promote formation of small molecules and reduce the oxygen content in product from 37.43% to 34.82%. HNO3 catalyst could do that of methyl acetate, 1-butanol and methyl benzoate. Furfural and 5-methyl furfural are found for FeCl3 catalyst. Comparing with conventional pyrolysis, the microwave pyrolysis with IL as additive but without catalysts could have higher yields of bio-oil in a short time.
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