发明申请
US20140100387A1 PROCESS FOR PREPARING CYCLOHEXANEPOLYCARBOXYLIC ACID DERIVATIVES HAVING A LOW PROPORTION OF BY-PRODUCTS
有权
制备具有较低比例的副产物的环己烷羧酸羧酸衍生物的方法
- 专利标题: PROCESS FOR PREPARING CYCLOHEXANEPOLYCARBOXYLIC ACID DERIVATIVES HAVING A LOW PROPORTION OF BY-PRODUCTS
- 专利标题(中): 制备具有较低比例的副产物的环己烷羧酸羧酸衍生物的方法
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申请号: US14045178申请日: 2013-10-03
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公开(公告)号: US20140100387A1公开(公告)日: 2014-04-10
- 发明人: Martin Bock , Boris Breitscheidel
- 申请人: BASF SE
- 申请人地址: DE Ludwigshafen
- 专利权人: BASF SE
- 当前专利权人: BASF SE
- 当前专利权人地址: DE Ludwigshafen
- 主分类号: C07C51/36
- IPC分类号: C07C51/36 ; C07C61/09
摘要:
The present invention relates to a process for preparing at least one cyclohexanepolycarboxylic acid or a derivative thereof by bringing at least one corresponding benzenepolycarboxylic acid or a derivative thereof into contact with a hydrogen-comprising gas in the presence of at least one coated catalyst comprising an active metal selected from the group consisting of ruthenium, rhodium, palladium, platinum and mixes thereof, applied to a support material comprising silicon dioxide, where the pore volume of the support material is from 0.6 to 1.0 ml/g, determined by Hg porosimetry, the BET surface area is from 280 to 500 m2/g, at least 90% of the pores present have a diameter of from 6 to 12 nm, and from 40 to 70% by weight of the active metal, based on the total amount of the active metal, are present in the catalyst coating up to a penetration depth of 200 μm, wherein the contacting is carried out at a superficial velocity of not more than 50 m/h.
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