应用化工
應用化工
응용화공
APPLIED CHEMICAL INDUSTRY
2014年
5期
909-912
,共4页
DL-γ-泛内酯%催化加氢%铜基催化剂
DL-γ-汎內酯%催化加氫%銅基催化劑
DL-γ-범내지%최화가경%동기최화제
DL-γ-butyrolactone%catalytic hydrogenation%copper-based catalyst
采用共沉淀法制备纳米铜基催化剂，用于固定床反应器连续加氢制备 DL-γ-泛内酯。结果表明，异丁醛和乙醛酸羟醛缩合产物在反应温度120℃，氢气压力7 MPa，液空速0.6~0.8 h -1，n（H2）： n（醛）=80：1条件下连续加氢，DL-泛内酯的收率高达98％。催化剂经过700 h 稳定性考察，平均收率﹥96％，反应前后催化剂无明显失活现象，表明催化剂活性稳定，预计有较长使用寿命。
採用共沉澱法製備納米銅基催化劑，用于固定床反應器連續加氫製備 DL-γ-汎內酯。結果錶明，異丁醛和乙醛痠羥醛縮閤產物在反應溫度120℃，氫氣壓力7 MPa，液空速0.6~0.8 h -1，n（H2）： n（醛）=80：1條件下連續加氫，DL-汎內酯的收率高達98％。催化劑經過700 h 穩定性攷察，平均收率﹥96％，反應前後催化劑無明顯失活現象，錶明催化劑活性穩定，預計有較長使用壽命。
채용공침정법제비납미동기최화제，용우고정상반응기련속가경제비 DL-γ-범내지。결과표명，이정철화을철산간철축합산물재반응온도120℃，경기압력7 MPa，액공속0.6~0.8 h -1，n（H2）： n（철）=80：1조건하련속가경，DL-범내지적수솔고체98％。최화제경과700 h 은정성고찰，평균수솔﹥96％，반응전후최화제무명현실활현상，표명최화제활성은정，예계유교장사용수명。
Copper-based catalyst was prepared by co-precipitation and was used for the preparation for DL-γ-butyrolactone in a fixed bed microreactor by the catalytic hydrogenation of the condensation prod-ucts of isobutyraldehyde and glyoxylic acid. The result showed that the optimum reaction conditions were as following:reaction temperature 120 ℃,hydrogen pressure 7 MPa,n(hydrogen): n(aldehyde)= 80: 1 and liquid hourly space velocity 0. 6 ~ 0. 8 h - 1 . Under above conditions,the yield of product was up to 98% . The stability of catalyst was also studied. It showed that there was no obvious deactivation after reac-ting for 700 h,and the average yield was greater than 96% . The results showed that the catalyst was ex-pected to have a long service life.
