"22310" . . . "4"^^ . . "\u0160patenka, \u0160t\u011Bp\u00E1n" . . . "Praha" . "F\u00EDla, Vlastimil" . "Praha" . "V posledn\u00ED letech je zna\u010Dn\u00E1 pozornost v\u011Bnov\u00E1na v\u00FDzkumu p\u0159\u00EDm\u00FDch neoxidativn\u00EDch katalytick\u00FDch proces\u016F konverze metanu na vod\u00EDk a cenn\u00E9 chemick\u00E9 slou\u010Deniny. Mezi tyto procesy pat\u0159\u00ED t\u00E9\u017E neoxidativn\u00ED aromatizace metanu, pou\u017E\u00EDvaj\u00EDc\u00ED jako katalyz\u00E1tory tvarov\u011B selektivn\u00ED mikropor\u00E9zn\u00ED materi\u00E1ly. V pr\u016Fb\u011Bhu tohoto procesu doch\u00E1z\u00ED k pom\u011Brn\u011B rychl\u00E9 dezaktivaci katalyz\u00E1tor\u016F vlivem vzniku uhl\u00EDkat\u00FDch \u00FAsad na jejich povrchu a uvnit\u0159 mirkopor\u00E9zn\u00ED struktury. V t\u00E9to pr\u00E1ci jsme se zam\u011B\u0159ili na studium mo\u017Enost\u00ED potla\u010Den\u00ED dezaktivace t\u011Bchto katalyz\u00E1tor\u016F a mo\u017Enosti jejich zp\u011Btn\u00E9 regenerace. Byly navr\u017Eeny a experiment\u00E1ln\u011B sledov\u00E1ny dva postupy :(i)p\u0159\u00EDdavek CO2 do vstupn\u00ED sm\u011Bsi, (ii)modifikace katalyz\u00E1toru Mo-ZSM5 p\u0159\u00EDdavkem Co. Byla t\u00E9\u017E testov\u00E1na mo\u017Enost regenerace dezaktivovan\u00FDch katalyz\u00E1tor\u016F zp\u011Btnou oxidac\u00ED uhl\u00EDkat\u00FDch \u00FAsad pomoc\u00ED sm\u011Bsi N2 - O2. Katalytick\u00E1 aktivita molybdenov\u00FDch katalyz\u00E1tor\u016F p\u0159ipraven\u00FDch impregnac\u00ED z vodn\u00E9ho roztoku heptamolybdenanu amonn\u00E9ho na nosi\u010D ZSM-5 (pop\u0159. dusi\u010Dnanu kobaltnat\u00E9ho) byla testov\u00E1na v pr\u016Fto"@cs . "RIV/60461373:22310/05:00013592" . "531417" . "Bernauer, Bohumil" . "21"^^ . "Mo\u017Enosti potla\u010Den\u00ED dezaktivace katalyz\u00E1tor\u016F pro aromatizaci metanu"@cs . "aromatization; methane; catalysts; dezactivation"@en . . "Suppressing methane aromatization catalysts dezactivation possibilities"@en . . . . . "Fulem, Josef" . "Vysok\u00E1 \u0161kola chemicko-technologick\u00E1 v Praze" . . . "V posledn\u00ED letech je zna\u010Dn\u00E1 pozornost v\u011Bnov\u00E1na v\u00FDzkumu p\u0159\u00EDm\u00FDch neoxidativn\u00EDch katalytick\u00FDch proces\u016F konverze metanu na vod\u00EDk a cenn\u00E9 chemick\u00E9 slou\u010Deniny. Mezi tyto procesy pat\u0159\u00ED t\u00E9\u017E neoxidativn\u00ED aromatizace metanu, pou\u017E\u00EDvaj\u00EDc\u00ED jako katalyz\u00E1tory tvarov\u011B selektivn\u00ED mikropor\u00E9zn\u00ED materi\u00E1ly. V pr\u016Fb\u011Bhu tohoto procesu doch\u00E1z\u00ED k pom\u011Brn\u011B rychl\u00E9 dezaktivaci katalyz\u00E1tor\u016F vlivem vzniku uhl\u00EDkat\u00FDch \u00FAsad na jejich povrchu a uvnit\u0159 mirkopor\u00E9zn\u00ED struktury. V t\u00E9to pr\u00E1ci jsme se zam\u011B\u0159ili na studium mo\u017Enost\u00ED potla\u010Den\u00ED dezaktivace t\u011Bchto katalyz\u00E1tor\u016F a mo\u017Enosti jejich zp\u011Btn\u00E9 regenerace. Byly navr\u017Eeny a experiment\u00E1ln\u011B sledov\u00E1ny dva postupy :(i)p\u0159\u00EDdavek CO2 do vstupn\u00ED sm\u011Bsi, (ii)modifikace katalyz\u00E1toru Mo-ZSM5 p\u0159\u00EDdavkem Co. Byla t\u00E9\u017E testov\u00E1na mo\u017Enost regenerace dezaktivovan\u00FDch katalyz\u00E1tor\u016F zp\u011Btnou oxidac\u00ED uhl\u00EDkat\u00FDch \u00FAsad pomoc\u00ED sm\u011Bsi N2 - O2. Katalytick\u00E1 aktivita molybdenov\u00FDch katalyz\u00E1tor\u016F p\u0159ipraven\u00FDch impregnac\u00ED z vodn\u00E9ho roztoku heptamolybdenanu amonn\u00E9ho na nosi\u010D ZSM-5 (pop\u0159. dusi\u010Dnanu kobaltnat\u00E9ho) byla testov\u00E1na v pr\u016Fto" . "2005-05-26+02:00"^^ . "RIV/60461373:22310/05:00013592!RIV06-MSM-22310___" . "80-7080-565-X" . . . "Mo\u017Enosti potla\u010Den\u00ED dezaktivace katalyz\u00E1tor\u016F pro aromatizaci metanu" . . . "Mo\u017Enosti potla\u010Den\u00ED dezaktivace katalyz\u00E1tor\u016F pro aromatizaci metanu" . "326-346" . "[FF98048D70A8]" . "Sborn\u00EDk symposia Nov\u00E9 trendy v anorganick\u00E9 technologii" . "P(GD203/03/H140), Z(MSM 223100001)" . "Suppressing methane aromatization catalysts dezactivation possibilities"@en . . . "4"^^ . "During the past 20 years the valorization of natural gas has become a highly developed and mature research field and various processes have been developed to convert the most abundant hydrocarbon into useful chemical products, those are, higher aliphatic and aromatic hydrocarbons. One of them is the direct non oxidative methane aromatization carried out on the shape selective microporous materials. During catalytic reaction, on the surface of the zeolite crystals and in their porous structure the carbon deposits are formed and the catalysts are quickly deactivated. Partial suppression of catalyst deactivation and catalyst regeneration are studied in presented work. Two ways leading to the more stable catalyst performance were proposed and experimentally tested: (i) CO2 addition to feed, (ii) Mo-ZSM5 catalyst modification by Co. The regeneration of deactivated catalyst by the direct oxidation were tested also. Catalytic activity of Mo-catalysts prepared by wet impregnation of ZSM-5 from water solution"@en . . . . . "Mo\u017Enosti potla\u010Den\u00ED dezaktivace katalyz\u00E1tor\u016F pro aromatizaci metanu"@cs .