山西化工
山西化工
산서화공
SHANXI CHEMICAL INDUSTRY
2012年
5期
18-21
,共4页
间苯二胺%水解%间苯二酚%醋酸正丁酯%萃取
間苯二胺%水解%間苯二酚%醋痠正丁酯%萃取
간분이알%수해%간분이분%작산정정지%췌취
m-phenylenediamine%hydrolysis%resoreinol%n-butyl acetate%extration
以间苯二胺为原料,硫酸为催化剂,加压水解制备间苯二酚。考察了反应温度、反应时间、分段水解以及废水套用对反应的影响。实验结果表明,当硫酸与间苯二胺的摩尔比为2∶1、反应温度225℃～230℃、反应时间4 h、采用一步水解时,间苯二酚的收率为89.09%;产品质量分数为90.99%,产物中仅含微量树脂化物质。
以間苯二胺為原料,硫痠為催化劑,加壓水解製備間苯二酚。攷察瞭反應溫度、反應時間、分段水解以及廢水套用對反應的影響。實驗結果錶明,噹硫痠與間苯二胺的摩爾比為2∶1、反應溫度225℃～230℃、反應時間4 h、採用一步水解時,間苯二酚的收率為89.09%;產品質量分數為90.99%,產物中僅含微量樹脂化物質。
이간분이알위원료,류산위최화제,가압수해제비간분이분。고찰료반응온도、반응시간、분단수해이급폐수투용대반응적영향。실험결과표명,당류산여간분이알적마이비위2∶1、반응온도225℃～230℃、반응시간4 h、채용일보수해시,간분이분적수솔위89.09%;산품질량분수위90.99%,산물중부함미량수지화물질。
Resorcinol was prepared from m-phenylenediamine through the catalysis of sulfuric acid at pressurized conditions. The effect of reaction temperature, time, segmented hydrolysis and wastewater recycling was explored through experiments. The result showed that the mole ratio of sulfuric acid to m-phenylenediamine 2: 1, reaction temperature at 225 ℃- 230 ℃, reaction time of 4 hours and one- step hydrolysis was the best reation condition. Under these conditions, the yield of resorcinol could reach up to 89.09%, and the con- tent was 90.99%, a small amount of resin material was only contained in the product.
