http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-864707-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9e5302e08e56037ff7bc5c9b6fcc29f9 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-2869 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B39-02 |
| filingDate | 1958-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1961-04-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-864707-A |
| titleOfInvention | Improvements in and relating to zeolites |
| abstract | A synthetic crytalline zeolite, designated zeolite W of formula <FORM:0864707/III/1> where M is a mono- or divalent metal of valence n, and X is up to 5.1, having a characteristic X-ray diffraction pattern, is prepared by first forming the potassium, or potassium/sodium form and then, if necessary effecting ion exchange to introduce the required ion. Potassium aluminate/silicate aqueous mixtures of K2O/SiO2 ratio 0.6-0.9, SiO2/Al2O3 from 4-7 and H2O/K2O from 20-30 are employed, and reacted at 75-120 DEG C. to crystallize the required zeolite. The preparation of the following zeolites is described:- 1.02K2O : Al2O3 : 3.65SiO2 : 5.1H2O and 0.91K2O : 0.21Na2O : Al2O3 : 3.58SiO2 : 5.1H2O. Zeolite W has a cubic unit cell of 20.55<\>pA edge. It may be activated at 250 DEG C. and employed as an adsorbent, for example to selectively adsorb oxygen from an O2/N2 mixture at -196 DEG C., or to remove hydrogen sulphide from petroleum hydrocarbons. The adsorption capacity for water ammonia, carbon dioxide, sulphur dioxide, methanol, hydrogen sulphide and oxygen is specified. Ion exchange forms referred to are lithium, sodium, calcium, manganese, magnesium, zinc and strontium. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3545921-A |
| priorityDate | 1957-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 43.