http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6156938-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_581f0566c3db4e3209c30877d09184db |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-58 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-58 |
| filingDate | 1998-03-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2000-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8affeba45fe606587b25d7222e16ea11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ec444764dc878855968f17eb87eb7261 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_637ebb9b229f4a9b68373911f6de7cc8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_85db74435abd937febafd60bf942df42 |
| publicationDate | 2000-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-6156938-A |
| titleOfInvention | Process for making phenol or phenol derivatives |
| abstract | A process for hydroxylating an aromatic compound comprises the steps of: (a) contacting an aromatic compound with a catalyst having an average concentration of alpha -sites of at least about 1x1016 per gram of catalyst, the catalyst having alpha -oxygen loaded thereon, whereby an hydroxylated derivative of the aromatic compound is produced; and (b) regenerating the catalyst when the concentration of alpha -sites falls below a predetermined value. The predetermined value will depend on the process design, but can suitably be about 1x1016 per gram of catalyst or higher. Another embodiment of the process comprises: (a) contacting an aromatic compound with a catalyst having an average concentration of alpha -sites of at least about 1x1016 per gram of catalyst, the catalyst having alpha -oxygen loaded thereon, whereby an hydroxylated derivative of the aromatic compound is produced; and (b) reloading the catalyst with alpha -oxygen by contacting the catalyst with a free oxidant activator. The progress of the reloading of the catalyst can be determined by: (a) passing an input gas stream over the catalyst, the input gas stream comprising an inert gas; (b) collecting an output gas stream that has passed over the catalyst; (c) introducing a plurality of nitrous oxide impulses into the input gas stream, each impulse being separated by a period in which the input gas stream contains no nitrous oxide; (d) measuring the concentrations of nitrous oxide and nitrogen gas in the output gas stream after an impulse of nitrous oxide is introduced; and (e) comparing the concentrations of nitrogen gas and nitrous oxide in the output gas stream. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11008276-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6765101-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10550063-B2 |
| priorityDate | 1997-04-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 57.