公开(公告)号：DE50004229D1

公开(公告)日：2003-12-04

申请号：DE50004229

申请日：2000-08-10

Applicant: BASF AG

Inventor： RUIDER DR ,  ROSS DR ,  BREITSCHEIDEL DR ,  MAIER HEIKE ,  SCHULZ DR ,  HUBER DR

IPC: B01J35/02 ,  C07B61/00 ,  C07C213/10 ,  C07C215/08 ,  C07C215/10 ,  C07C215/12 ,  C07C215/14

Abstract: Preparation of alkanolamine with improved color properties comprises treating an alkanolamine with water using a heterogeneous hydration catalyst containing Ru, Re, Rh, Pd, Os, Ir, Pt and/or Ag and a support from active carbon, alpha Al2O3, ZrO2 and Ti oxide at high temperature, the cutting hardness being at least 10 N, the side pressure resistance being at least 30 N and the stamp hardness being at least 25 N when the support is active carbon.

公开(公告)号：DE50003881D1

公开(公告)日：2003-11-06

申请号：DE50003881

申请日：2000-07-10

Applicant: BASF AG

Inventor： SCHWAB DR ,  SCHULZ DR ,  HUBER DR

IPC: C07C6/04 ,  C07B61/00 ,  C07C7/00 ,  C07C7/10 ,  C07C7/148 ,  C07C7/163 ,  C07C7/177 ,  C07C11/06 ,  C07C11/10 ,  C07C11/107 ,  C07C11/113

Abstract: The production of 5C/6C olefins from a 4C olefin-containing product stream involves disproportionation of 1-, 2- and iso-butene on a Group VIb, VIIb or Sub-Group VIII metal-based catalyst followed by distillation to give a 4-6C fraction which is then distilled to give hexene and methylpentene as a high-boiling fraction. A process (A) for the production of 5C/6C olefins from 4C olefins involves: (a) disproportionation of 1-butene, 2-butene and isobutene in a 4C olefin product stream in presence of a disproportionation catalyst containing Group VIb, VIIb or Sub-Group VIII metal compound(s), to give a mixture of 2-6C olefins and butanes; (b) distillation to give a low-boiling fraction (A) comprising 2-3C olefins or 2-4C olefins and butanes, which is removed, and a high-boiling fraction consisting of 4-6C olefins and butanes; (c) distillation of the high-boiling fraction to give a low-boiling fraction (B; butenes and butanes), a middle fraction (C; pentene and methylbutene) and a high-boiling fraction (D; hexene and methylpentene), and (d) separation of (D) as product, with complete or partial return of fractions (B) and/or (C) to stage (a). An Independent claim is also included for a process (B) for the production of 5C/6C olefins and propene from steam cracker streams or refinery 4C streams, involving: (1) removal of butadiene and acetylenes by optional extraction with a butadiene-selective solvent and subsequent or alternative selective hydrogenation of butadienes and acetylenic impurities in the crude 4C fraction, to give a product containing n-butene and iso-butene; (2) removal of isobutene by reaction of the above product with an alcohol in presence of acid catalyst to give an ether, with separation of the ether and alcohol to give a product containing n-butene and possibly oxygenated impurities, and removal of the ether or re-cleavage for the production of pure isobutene by subsequent distillation with optional separation of entrained 3C, iso-4C and 5C hydrocarbons; (3) removal of oxygenated impurities on suitable adsorbers; and (4) disproportionation of the refined product (II) stream as in stages (a)-(d) above.