摘要
利用大孔强酸性阳离子树脂HD-8为催化剂,在高压反应釜中合成了聚甲醛二甲醚,并考察了催化剂用量、物料配比、反应温度和时间及搅拌速度等工艺条件对PODE_(3-8)收率的影响。确立了较佳的工艺条件为:催化剂/反应物质量比为4%,原料配比为n(HCHO):n(Me OH)=2,反应温度95℃,初始N2压力1.0MPa,搅拌转速650r/min,反应时间6h。该工艺条件下,PODE_(3-8)收率可达39.66%。
Polyoxymethylene dimethyl ethers（PODEs） was synthesized from methanol and paraformaldehyde in an autoclave with the macroporous strong acid ion exchange resin HD-8 as catalyst. The effects of catalyst dose, ratio of reactants, reaction temperature and time and stirring speed were investigated. The optimum conditions were determined as follows： mass ratio of catalyst to reactants of 4%, HCHO/Me OH mole ratio in feedstock of 2, reaction temperature of 95℃, original N_2 pressure of 1.0MPa, stirring speed of 650r/min and reaction time as 6h. Under above conditions, the yield of PODE_（3-8）was 39.66%.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2016年第2期8-11,共4页
Natural Gas Chemical Industry
关键词
聚甲醛二甲醚
甲醇
多聚甲醛
合成
polyoxymethylene dimethyl ether
methanol
paraformaldehyde
synthesis
