| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J21-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-031 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-055
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-0203
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J37-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-58 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J21-08 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-15
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-055
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J37-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| filingDate |
2001-07-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2007-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2007-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-100767744-B1 |
| titleOfInvention |
Highly selective shell impregnation catalyst with improved space time yield for the production of vinyl acetate |
| abstract |
The shell-impregnated catalyst of Pd-Au prepared on a silica support having a Pd loading of 1.8 g / L to about 7.2 g / L in the catalyst and a weight ratio of Au to Pd of 0.3 to 2.0 was used for the palladium, gold salt and acid. Impregnating the support with an aqueous solution, and then precipitating the water-insoluble compound of Pd and Au on the support with an alkali metal silicate or hydroxide, and reacting with ethylene or hydrogen at a temperature of 150 ° C. to 310 ° C. or 299 ° C. Reduced by reaction with hydrogen at the following temperature to substantially reduce all Pd and Au content to the free metal state, and then impregnating the support with 6-7 wt% potassium acetate in the total catalyst weight. do. For the production of vinyl acetate (VA), the catalyst has about 20-30% greater space-time yield (STY) and specific activity (SA) compared to the same catalyst composition prepared from the impregnated support reduced at 150 ° C. A VA selectivity of at least 90% when operating under reaction conditions such that the hourly space velocity of is 4500 / hr and the STY is at least 600 at temperatures between 140 ° C. and 160 ° C. |
| priorityDate |
2000-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |