安徽化工
安徽化工
안휘화공
ANHUI CHEMICAL INDUSTRY
2014年
4期
23-27
,共5页
甲基苯胺%硝基甲苯%纳米催化剂%加氢反应%新工艺
甲基苯胺%硝基甲苯%納米催化劑%加氫反應%新工藝
갑기분알%초기갑분%납미최화제%가경반응%신공예
methylaniline%methylnitrobenzene%nanocatalyst%hydrogention reaction%new process
研究了以甲基苯胺为溶剂,采用纳米催化剂,催化加氢硝基甲苯制备甲基苯胺的绿色工艺。考查了反应压力、反应温度、搅拌转速、甲基苯胺用量、硝基甲苯用量、催化剂用量等反应条件对加氢反应的影响,确定了最佳工艺条件。结果表明,硝基甲苯与甲基苯胺加入量比为4∶10(质量比),催化剂加入量为硝基甲苯加入量的10%,在反应温度100~120℃,H2压力1.2~1.4 MPa,搅拌速率1500r/min的反应条件下,硝基甲苯的转化率达到88.5%以上,甲基苯胺的选择性可达100%。反应过程中催化剂可重复使用。整个工艺过程安全环保,成本低,能耗低,收益高。
研究瞭以甲基苯胺為溶劑,採用納米催化劑,催化加氫硝基甲苯製備甲基苯胺的綠色工藝。攷查瞭反應壓力、反應溫度、攪拌轉速、甲基苯胺用量、硝基甲苯用量、催化劑用量等反應條件對加氫反應的影響,確定瞭最佳工藝條件。結果錶明,硝基甲苯與甲基苯胺加入量比為4∶10(質量比),催化劑加入量為硝基甲苯加入量的10%,在反應溫度100~120℃,H2壓力1.2~1.4 MPa,攪拌速率1500r/min的反應條件下,硝基甲苯的轉化率達到88.5%以上,甲基苯胺的選擇性可達100%。反應過程中催化劑可重複使用。整箇工藝過程安全環保,成本低,能耗低,收益高。
연구료이갑기분알위용제,채용납미최화제,최화가경초기갑분제비갑기분알적록색공예。고사료반응압력、반응온도、교반전속、갑기분알용량、초기갑분용량、최화제용량등반응조건대가경반응적영향,학정료최가공예조건。결과표명,초기갑분여갑기분알가입량비위4∶10(질량비),최화제가입량위초기갑분가입량적10%,재반응온도100~120℃,H2압력1.2~1.4 MPa,교반속솔1500r/min적반응조건하,초기갑분적전화솔체도88.5%이상,갑기분알적선택성가체100%。반응과정중최화제가중복사용。정개공예과정안전배보,성본저,능모저,수익고。
The hydrogenation reaction of Methylnitrobenzene catalyzed by nanocatalyst to prepare Methylaniline using Methylaniline as the solvent was studied. Reaction pressure,reaction temperature,stirring speed,Methylaniline dosage, Methylnitrobenzene dosage and catalyst dosage on the catalytic hydrogenation were investigated. The conditions of hydrogenation reaction were determined. The experimental results showed that the conversion of Methylnitrobenzene could reach ≥88.5% ,the selectivity of Methylaniline could reach 100% under the reaction conditions of reaction:Methylnitrobenzene/Methylnitrobenzene weight ratio of 4∶10, nanocatalyst /Methylnitrobenzene weight ratio of 10%, temperature 100~120℃, hydrogen pressure 1.2~1.4 MPa , stirring rate 1500 r/ min . The catalyst could be reused. The process is safe and environmentally friendly with low cost and low energy consumption.