Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Phosphorus or compound containing same
Patent
1990-02-06
1990-11-27
Shah, Mukund J.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Phosphorus or compound containing same
B01J 27198
Patent
active
049735691
ABSTRACT:
A process for preparing alkyl-extended, alcohol-extended or amine-extended piperazines or mixtures thereof comprising contacting a difunctional aliphatic alcohol with a reactant amine, wherein at least one of the aliphatic alcohol or the reactant amine contains a piperazine moiety, in the presence of a catalyst containing a Group VB metal oxide or a Group VB metal phosphate, or mixtures thereof. For example, monoethanolamine reacts with piperazine in the presence of a catalyst of niobic acid supported on hydrated alumina to yield predominantly N-(2-aminoethyl)piperazine. Also, N-hydroxyethylpiperazine reacts with piperazine in the presence of a catalyst of niobium phosphate to yield predominantly 1,2-bis(piperazinyl)-ethane.
REFERENCES:
patent: 3037025 (1962-05-01), Godfrey
patent: 3231616 (1966-01-01), Jones
patent: 3362218 (1968-01-01), Reater, Jr.
patent: 3956329 (1976-05-01), Murakami et al.
patent: 4036881 (1977-07-01), Brennan et al.
patent: 4049657 (1977-09-01), Brennan et al.
patent: 4217240 (1980-08-01), Bergna
patent: 4376732 (1983-03-01), Ramirez
patent: 4400306 (1983-08-01), Dria et al.
patent: 4495369 (1985-01-01), Werner et al.
patent: 4552961 (1985-11-01), Herdle
patent: 4582904 (1986-04-01), Wells et al.
patent: 4588842 (1986-05-01), Vanderpool
patent: 4613705 (1986-09-01), Hargis
patent: 4622310 (1986-11-01), Iacobucci et al.
patent: 4652544 (1987-03-01), Okazaki et al.
patent: 4698427 (1987-10-01), Vanderpool
patent: 4784981 (1988-11-01), Alpops et al.
Mikhailova et al., Zh. Org. Khim. 1977, 13 (2) 460, Chem. Abstracts, vol. 87, 1977, Abs. 23209k.
Bowman Robert G.
Hartwell George E.
Shah Mukund J.
The Dow Chemical Company
Ward E. C.
LandOfFree
Preparation of group VB metal phosphate catalysts therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Preparation of group VB metal phosphate catalysts therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of group VB metal phosphate catalysts therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1031901