公开(公告)号：FR1314305A

公开(公告)日：1963-01-04

申请号：FR887455

申请日：1962-02-09

Applicant: BASF AG

Inventor： GERLOFF ULRICH ,  JAHN JUERGEN ,  GOEHRE OTTO

IPC: C07C31/04

公开(公告)号：CA978991A

公开(公告)日：1975-12-02

申请号：CA105649

申请日：1971-02-17

Applicant: BASF AG

Inventor： VOSS HARRO ,  JAHN JUERGEN ,  WULGARIS SAVAS ,  MUELLER HERBERT ,  STUEHLEN FERDINAND

IPC: C07C29/16 ,  C07C31/125 ,  C08K5/11 ,  C08K5/12

公开(公告)号：CA966849A

公开(公告)日：1975-04-29

申请号：CA144738

申请日：1972-06-14

Applicant: BASF AG

Inventor： JAHN JUERGEN ,  KRATZER OTTO

IPC: C07C67/48 ,  C07C69/44 ,  C07C69/80

公开(公告)号：CA876136A

公开(公告)日：1971-07-20

申请号：CA876136D

Applicant: BASF AG

Inventor： PURPUR GERHARD ,  SCHULZ GERHARD ,  JANKA FRANZ ,  SUTER HUBERT ,  JAHN JUERGEN

公开(公告)号：CA915700A

公开(公告)日：1972-11-28

申请号：CA915700D

Applicant: BASF AG

Inventor： BRUNNMUELLER FRIEDRICH ,  CLAREN OTTO B ,  SUTER HUBERT ,  JAHN JUERGEN ,  JANKA FRANZ

公开(公告)号：GB941642A

公开(公告)日：1963-11-13

申请号：GB448862

申请日：1962-02-06

Applicant: BASF AG

Inventor： GERLOFF ULRICH ,  JAHN JUERGEN ,  GOEHRE OTTO

IPC: C07C31/04 ,  C07C45/00

Abstract: In a process for the production of formaldehyde from methanol, crude methanol is submitted to distillation to remove a low-boiling fraction which contains the iron carbonyl contaminants, and the iron-free methanol remaining as residue is subjected to dehydrogenation in the presence of a silver metal catalyst. The distillation is preferably carried out by introducing the crude methanol into the upper part of a fractionating column having a efficiency equivalent to 2 to 20 theoretical plates, a reflux ratio between 1:10 and 1:100 being employed in the fractionation. In general, the amount of distillate, withdrawn from the top of the column, amounts to 0.2 to 0.4% by weight with reference to the crude methanol. In an example, the iron-free methanol, obtained as distillation-residue, is mixed with 45% by weight of water. The solution is evaporated the vapours are mixed with air, and the vapour-mixture is passed over silver crystals at a temperature of about 625 DEG C. whereby the methanol is converted into formaldehyde.

公开(公告)号：GB1067083A

公开(公告)日：1967-05-03

申请号：GB3402264

申请日：1964-08-20

Applicant: BASF AG

Inventor： GERLOFF ULRICH ,  JAHN JUERGEN ,  SCHLEICHER ADOLF

IPC: C07C45/38

Abstract: Methanol is oxidatively dehydrogenated at 450-700 DEG C. to formaldehyde in the presence of silver crystals on a Cr-Ni steel support, optionally with a minor amount of Mo, Mn, Cu, Ti or Nb also present. The reaction may be effected in the presence of inert gases or vapours, e.g. steam.ALSO:Formaldehyde is made from methanol in the presence of silver crystals supported on Cr-Ni steel. Additionally the catalyst may contain Mo, Mn, Cu, Ti or N6.