【摘要】 以5分子筛为催化剂、甲苯为萃取剂、木糖为原料制备了糠醛,考察了催化剂用量、溶剂用量、反应时间及反应温度对糠醛产率的影响。确定最佳工艺参数为:5 g木糖、5分子筛催化剂2.0 g、蒸馏水50 mL、甲苯100 mL、反应时间4 h、反应温度170℃,糠醛最大产率为29.2%。更多还原

【Abstract】 The article deals with the technology of producing furfural from xylose using molecular sieve(5) as catalyst and toluene as extracting agent.Effects of various factors(the amount of catalyst and solvent, reaction time and temperature) on yield of furfural are discussed.The optimized conditions are determined as follows:the amount of xyolse 5 g,the amount of molecular sieve(5) catalyst 2.0 g,distilled water(as a solvent for xylsoe) 50 mL,toluene 100 mL,reaction time 4 h,reaction temperature 170℃.The highest yield of furfural reach to 29.2%.更多还原