Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs – Clay
Patent
1994-05-23
1995-11-21
Pal, Asok
Catalyst, solid sorbent, or support therefor: product or process
Zeolite or clay, including gallium analogs
Clay
502 22, 502 23, 502 27, 502 31, 502 33, 502 81, B01J 2034, B01J 3860
Patent
active
054687012
ABSTRACT:
A three step process for regenerating spent bleaching clays and acid-activated smectite catalyst granules includes: (1) an extraction step to remove a majority of entrained oil, preferably about 75% to about 95% by weight of the entrained oil, when regenerating bleaching clays; (2) an oxidation step to remove the majority of remaining carbonaceous adsorbates which are not removed by the preceding extraction step, and (3) an acid wash step to restore the acidity normally associated with fresh acid-activated bleaching clays. The features of steps 2 and 3 may be combined into a single step by using an appropriate oxidant, for example, a source of acidic protons, such as peracetic acid.
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Kucharz Carolyn J.
Nebergall Robert S.
Taylor Dennis R.
American Colloid Company
Pal Asok
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