http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-713282-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2ef59818ce133314c48ee7c1a1cb9d5f http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_54aac8b97aa83ebeb9b583cc062e1782 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f7ef97fe6bd37048ddb456590af0d75f |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-26 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-26 |
| filingDate | 1952-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1954-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-713282-A |
| titleOfInvention | Process for the preparation of chromium silicate-type catalysts |
| abstract | A chromium silicate type catalyst is prepared by heating together silica, an alkali metal chromate and a catalytic quantity (e.g. 0.1-0.5 per cent. calculated as oxide) of a compound of an element of the group consisting of iron and the elements of Group 2 of the Periodic Table. Preferably 0.5-4 parts by weight of the chromate are used for 6 parts of silica, and heating is carried out at a temperature not below 800 DEG C. The products may be regarded as solutions of chromium sesquioxide in silica, as chromium silicates, or as complex alkali-metal silicates. A compound having the formula M2O.Cr2O3, (SiO2)5 is claimed. Examples describe heating mixtures containing ground sand or quartz, sodium chromate, calcium chloride and ferric chloride. Silica may be added to an aqueous solution of the other substances and the mixture evaporated to dryness. Copper, zinc, bismuth, magnesium, titanium, vanadium, manganese, molybdenum or tungsten as oxides or borates may be added as promoters. The catalyst may be powdered or formed into pellets or roughly spheroidal bodies. The Provisional Specification states that Group VIII metals may be used in addition to Group II metals. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5169823-A |
| priorityDate | 1952-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.