论文部分内容阅读
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。
The ionic liquid 1-butyl-3-methylimidazolium chloride (IL) was used as additive to investigate the effect of 5A-Ca molecular sieve, HNO3 and FeCl3 on the cracking of methyl cellulose (MC). The effect of IL dosage, microwave power, reaction time and catalyst on the cleavage of MC was experimentally studied. The distribution of liquid products in microwave lysing was studied by GC-MS. The results showed that different catalysts led to different liquid product distributions. Among them, 5A-Ca zeolite catalysts promoted the formation of small molecules, while the oxygen content in biomass oil decreased from 37.43% to 34.82%. HNO3 catalyst promoted Methyl acetate, n-butanol and methyl benzoate formation; FeCl3 as a catalyst, promoted furfural and 5 - methyl furfural formation. By comparing conventional pyrolysis with microwave pyrolysis, it was found that microwave pyrolysis can yield high biomass oil yields in a shorter period of time.