乙醇胺气固相催化合成乙撑胺

Synthesis of Ethylene Polyamine from Ethanolamine by Gas-solid Catalytic Reaction

以乙醇胺和液氨为原料,改性H-ZSM-5型分子筛为催化剂,在固定床反应器中气固相催化合成乙撑胺。考察了催化剂组成(金属硝酸盐种类及配比)和制备条件(浸渍温度和时间、干燥温度和时间、焙烧温度和时间)对催化反应的影响,并且考察了催化剂的稳定性。结果表明,催化剂组成和制备的最佳条件是:硝酸钙配比为0.04g/g分子筛、60℃浸渍6h,140℃干燥1h、450℃焙烧6h。在100h内催化剂的稳定性良好。

Ethylene polyamine was synthesized from monoethanolamine and liquid ammonia using modified H-ZSM-5 zeolite as catalyst. The composition and preparation method of catalyst were as follows= impreg- nating with 0.04 mass cotent of calcium nitrate for 6 h at 60℃, drying at 140℃ for 1 h, and calcining at 450℃ for 6 h. This catalyst showed excellent stability in 100 h.