Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1979-06-19
1980-09-30
Hearn, Brian E.
Coating processes
With post-treatment of coating or coating material
Heating or drying
423625, 423630, 21098C, C01F 702, B01D 1508
Patent
active
042256399
ABSTRACT:
The invention relates to a process for preparing alumina being suitable for layer chromatography.
The alumina suitable for layer chromatography is prepared in accordance with the invention in such a manner that an aluminium trinydroxyde containing 34 to 37% by weight of bayerite, 3 to 5% by weight of pseudoboehmite and 60 to 62% by weight of amorphous aluminium trihydroxide is heated at 300.degree. C. to 400.degree. C. for 2 to 4 hours.
The activated alumina thus produced is snow-white, has a large specific surface and its average grain size is within the range between 8 and 20 .mu.m.
The product complies with the requirements of layer chromatographical technique.
REFERENCES:
patent: 2247624 (1941-07-01), Wall
patent: 2894915 (1959-07-01), Keith
patent: 2898307 (1959-08-01), Keith
patent: 3539468 (1970-11-01), Wright
patent: 3542588 (1970-11-01), Heidbrink
patent: 3726405 (1973-04-01), Engelbrecht
Frey, H. "Chromatographic Separations on Ultrathin Silica Gel and Aluminum Oxide Layers" in Chemical Abstracts vol. 77, 1972, #96524n. _
Kaptay Gyorgy
Kokeny Bela
Matyasi Jozsef
Nemeth Sandor
Zsembery Laszlo
Hearn Brian E.
Magyar Aluminiumipari Troszt
LandOfFree
Process for preparing alumina being suitable for layer chromatog does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for preparing alumina being suitable for layer chromatog, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing alumina being suitable for layer chromatog will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1169905