Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Patent
1986-06-04
1987-11-17
Konopka, P. E.
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
502 24, 502211, 562535, B01J 3866, B01J 2728, B01J 2719, C07C 51235
Patent
active
047074604
ABSTRACT:
A method for regenerating a spent oxidation catalyst useful in the production of unsaturated carboxylic acids by vapor-phase oxidation of unsaturated aldehydes, the catalyst containing, at least, phosphorus, molybdenum, and an alkali metal(s), which method comprises dissolving and/or suspending the spent catalyst in a liquid composition, wherein the contents of ammonium ion and nitrate ion are controlled to be from 7 to 15 moles and from 0.1 to 4.0 moles, respectively, per 12 gram atoms of molybdenum, and immediately thereafter mixing the spent catalyst and the liquid composition.
REFERENCES:
patent: 4000088 (1976-12-01), Shimizu et al.
patent: 4118419 (1978-10-01), Ishii et al.
patent: 4165296 (1979-08-01), Ishii et al.
patent: 4303550 (1981-12-01), Callahan
patent: 4377501 (1983-03-01), Khoobiar
patent: 4410450 (1983-10-01), Sasaki et al.
Ishii Kazuhiro
Kato Masaki
Kobayashi Masao
Uno Tetsuya
Konopka P. E.
Mitsubishi Rayon Co. Ltd.
LandOfFree
Method for regenerating phosphorus-molybdenum-alkali containing 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 regenerating phosphorus-molybdenum-alkali containing , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for regenerating phosphorus-molybdenum-alkali containing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1450222