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nsdcsj
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ruochen0110(½ð±Ò+1,VIP+0): 5-26 17:07
zap65535(½ð±Ò+6,VIP+0):²¹·¢ 12-23 19:01
ruochen0110(½ð±Ò+1,VIP+0): 5-26 17:07
zap65535(½ð±Ò+6,VIP+0):²¹·¢ 12-23 19:01
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Dear Sir, I am a principal technician of plant 606, and it is my honor to have chance to communicate with you. The key step in our plant is selective hydrogenation. We mainly use interim-hydrogenation for ¶¡È²´¼£¨2-Methyl-3-butyn-2-ol£¿£¿¼×»ù¶¡È²´¼£© and dehydrolinalool. The primary difficulty lies on the judgment of reaction end, we would like ask you if you have any good method for the end judgment to avoid generating alkyl alcohol, and what is the phenomenon of the reaction end? Another problem is about 5% waste is produced in the hydrogenation procedure which is caused by the overhigh hydrogenation temperature. How could we lower the temperature and decrease the waste? In addition, we use the 1% Pd as catalyst with CaCO3 as carrier, and use the solution of acetic acid/zinc acetate as inhibitor. We would like to know if you have better inhibitor for the catalyzed hydrogenation? At last, it is really my honor to have talk with you face to face. Thanks very much. ×¢Ò⣬¡®ÔÙ¾ÍÊÇÓÐûÓкõķ´Ó¦ÖÕµãµÄÅжϷ½·¨¡£ºÃµÄ·´Ó¦ÖÕµãÏÖÏóʲôµÄ¡¯ÒѾ°üÀ¨ÔÚÄãÇ°ÃæÎÊÖÕµãÅжϵÄÎÊÌâÀïÁË¡£ÁíÍ⣬ÄãµÄÈý¸öÎÊÌâÎÒ·Ö³ÉÈý¶Î£¬½ÏΪÇå³þ¡£ ![]() [ Last edited by nsdcsj on 2009-5-26 at 16:23 ] |
2Â¥2009-05-26 16:21:39
jiaql
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ruochen0110(½ð±Ò+1,VIP+0): 5-30 16:18
ruochen0110(½ð±Ò+1,VIP+0): 5-30 16:18
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3Â¥2009-05-26 17:39:09
xiapeng08
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ruochen0110(½ð±Ò+1,VIP+0): 5-30 14:47
ruochen0110(½ð±Ò+1,VIP+0): 7-1 14:47
ruochen0110(½ð±Ò+1,VIP+0): 5-30 14:47
ruochen0110(½ð±Ò+1,VIP+0): 7-1 14:47
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Dear Mr. experts Hello! I am in charge of a technical workshop 606, and it is very honored for me to ask the question to you . Our workshop is now a key selective hydrogenation. We are now mainly intermittent hydrogenation, hydrogenation of now there are small workshops alcohol dehydrogenase of hydrogenation and the hydrogenation of linalool. In the process of hydrogenation Our main problem is not to determine the reaction end point, may I ask you about the way to judge a good finish without excessive hydrogenation Triacontanol arising. There is what we in the process of hydrogenation is often expected to produce some 5% of feet in the foot feed! The main reason is thant the hydrogenation of the reasons for the high temperature. How to reduce the temperature of reaction is expected to reduce the foot. We are a catalyst for hydrogenation of 1% Pd is done with vector CaCO3. Inhibitor using zinc acetate and acetic acid solution, may I ask you have a better inhibitor of the catalytic hydrogenation. Then there is no good way to determine the reaction end point. What is a good response to the end. Finally, you are very fortunate to have this kind of international experts face-to-face conversation. Thank you for your loyalty |
4Â¥2009-05-28 10:18:31














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