CAJ | 학술논문

卤代芳胺是重要的有机中间体，广泛应用于合成染料、农药、医药、香料及橡胶助剂等。卤代芳香硝基化合物通过液相催化加氢制备卤代芳胺的技术以其环境友好、产品质量稳定和工艺先进而受到重视。用负载型贵金属催化剂催化芳香硝基化合物选择加氢制备相应的芳胺有广泛的应用价值。采用邻硝基苯胺为原料，Pd/C为催化剂，低压催化加氢还原合成邻苯二胺，考察不同溶剂、反应压力、反应温度和反应时间对产物收率的影响。结果表明，在甲醇为溶剂、反应温度100℃、反应压力0.8 MPa和反应时间100 min条件下，邻苯二胺平均收率为97%。与传统硫化碱还原或铁粉化学法还原工艺相比，以甲醇为溶剂，Pd/C催化剂催化加氢法在减少废水和降低成本等方面有较大优势。
서대방알시중요적유궤중간체，엄범응용우합성염료、농약、의약、향료급상효조제등。서대방향초기화합물통과액상최화가경제비서대방알적기술이기배경우호、산품질량은정화공예선진이수도중시。용부재형귀금속최화제최화방향초기화합물선택가경제비상응적방알유엄범적응용개치。채용린초기분알위원료，Pd/C위최화제，저압최화가경환원합성린분이알，고찰불동용제、반응압력、반응온도화반응시간대산물수솔적영향。결과표명，재갑순위용제、반응온도100℃、반응압력0.8 MPa화반응시간100 min조건하，린분이알평균수솔위97%。여전통류화감환원혹철분화학법환원공예상비，이갑순위용제，Pd/C최화제최화가경법재감소폐수화강저성본등방면유교대우세。
Aromatic haloamines are important organic intermediates which are widely used for the produc-tion of fine chemicals such as dyes,herbicides,pesticides,drugs,flavor and rubber. The selective hydro-genation process of haloaromatic nitro-compounds to the corresponding aniline catalyzed by supported noble metal catalysts in liquid phase has attracted more attention due to its advantages of benign environ-ment,stable product quality and advanced technics. o-Phenylenediamine was synthesized by catalytic hydrogenation of o-nitroaniline over Pd/C catalyst. The effects of reaction temperature,reaction pressure, reaction time and different solvents on the product yield were investigated. The results showed that o-phenylenediamine average yield of 97% was obtained under the optimum synthesis condition as follows:reaction temperature 100 ℃,reaction pressure 0. 8 MPa,reaction time 100 min and methanol as the solvents. Compared with traditional ferrous powder or Na2 S chemical reduction methods,the catalytic hydrogenation of o-nitroaniline over Pd/C catalyst in methanol solution has more advantages with respect to reducing waste water and production cost.