Method for producing lactams using oligophosphate catalysts

Details Method for producing lactams using oligophosphate catalysts Method for producing lactams using oligophosphate catalysts

C - Chemistry, Metallurgy

07

D

C07D 201/08 (2006.01) B01J 27/18 (2006.01) C07D 213/61 (2006.01) C07D 277/32 (2006.01)

Patent

CA 2323616

The invention relates to a method for producing lactams by cyclization hydrolysis of aminonitriles in the has phase in the presence of a metal phosphate catalyst. One or more oligophosphates of general formula (I) M(POa)b, wherein M represents a metal group from 3 or 4 of the periodic table including the lanthanides, a2.5 and 4.0 and b is chosen to neutralise the charges, or a mixture of one or more oligophosphates of general formula (I) with one or more other salts of a metal from group 3 or 4 of the periodic table including the lanthanides and an inorganic acid is/are used as the catalyst. The invention also relates to the production of these catalysts.

L'invention concerne un procédé de production de lactames par hydrolyse cyclisante d'aminonitrile en phase gazeuse, en présence d'un catalyseur à phosphate métallique. On utilise, comme catalyseur, un ou plusieurs oligophosphates correspondants à la formule générale (I) M(PO¿a?)¿b?, dans laquelle M représente un métal du groupe 3 ou 4 de la classification périodique des éléments, y compris les lanthanides, a > 2,5 < 4,0 et b est choisi de façon qu'il règne une neutralité de charge, ou bien un mélange constitué d'un ou de plusieurs oligophosphates correspondant à ladite formule générale (I) et d'un ou de plusieurs sels d'un métal du groupe 3 ou 4 de la classification périodique des éléments, y compris les lanthanides, avec un acide inorganique. L'invention concerne en outre la production de ces catalyseurs.

Affiliated with

Also associated with

Rating

Method for producing lactams using oligophosphate catalysts does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing lactams using oligophosphate catalysts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing lactams using oligophosphate catalysts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1918364