Pore structure–CO2 adsorption property relations of supported amine materials with multi-pore networks
Christopher F. CogswellZelong XieAndrew T. Y. WolekY. WangAlyssa M. StavolaM. FinkenaurE H. GilmoreM. LanzillottiSunho Choi
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The chiral auxiliary directed addition of a propargyllithium reagent to a morpholino enamide, followed by exposure of the adduct to activated dry Florisil in the absence of solvent and in the presence of a primary or secondary amine, leads to a cascade of reactions that results in the formation of an aminocyclopentenone as a single diastereoisomer. The reaction can also be conducted intramolecularly.
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Бұл зерттеужұмысындaКaно моделітурaлы жәнеоғaн қaтыстытолықмәліметберілгенжәнеуниверситетстуденттерінебaғыттaлғaн қолдaнбaлы (кейстік)зерттеужүргізілген.АхметЯссaуи университетініңстуденттеріүшін Кaно моделіқолдaнылғaн, олaрдың жоғaры білімберусaпaсынa қоятынмaңыздытaлaптaры, яғнисaпaлық қaжеттіліктері,олaрдың мaңыздылығытурaлы жәнесaпaлық қaжеттіліктерінеқaтыстыөз университетінқaлaй бaғaлaйтындығытурaлы сұрaқтaр қойылғaн. Осы зерттеудіңмaқсaты АхметЯсaуи университетіндетуризмменеджментіжәнеқaржы бaкaлaвриaт бaғдaрлaмaлaрыныңсaпaсынa қaтыстыстуденттердіңқaжеттіліктерінaнықтaу, студенттердіңқaнaғaттaну, қaнaғaттaнбaу дәрежелерінбелгілеу,білімберусaпaсын aнықтaу мен жетілдіружолдaрын тaлдaу болыптaбылaды. Осы мaқсaтқaжетуүшін, ең aлдыменКaно сaуaлнaмaсы түзіліп,116 студенткеқолдaнылдыжәнебілімберугежәнеоның сaпaсынa қaтыстыстуденттердіңтaлaптaры мен қaжеттіліктерітоптықжұмыстaрaрқылыaнықтaлды. Екіншіден,бұл aнықтaлғaн тaлaптaр мен қaжеттіліктерКaно бaғaлaу кестесіменжіктелді.Осылaйшa, сaпa тaлaптaры төрт сaнaтқa бөлінді:болуытиіс, бір өлшемді,тaртымдыжәнебейтaрaп.Соңындa,қaнaғaттaну мен қaнaғaттaнбaудың мәндеріесептелдіжәнестуденттердіңқaнaғaттaну мен қaнaғaттaнбaу деңгейлерінжоғaрылaту мен төмендетудеосытaлaптaр мен қaжеттіліктердіңрөліaйқын aнықтaлды.Түйінсөздер:сaпa, сaпaлық қaжеттіліктер,білімберусaпaсы, Кaно моделі.
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Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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Packed bed CO2 adsorption breakthrough experiments using both amine-impregnated and amine-grafted silica adsorbent materials in the presence of SO2, NO and NO2 impurities are reported. The effects of temperature, feed concentration and adsorbent amine loading on the dynamic adsorption capacity of the adsorbents are evaluated by performing dual component SO2/CO2, NO/CO2 and NO2/CO2 coadsorption experiments as well as three component SO2/NO/CO2 adsorption experiments. Although SO2 is found to significantly influence the dynamic CO2 capacity of aminosilica adsorbents, the obtained results confirm the long-term stability of the adsorbents during SO2/CO2 coadsorption runs when the bed is not allowed to fully saturate with SO2. On the other hand, little competitive effect of NO on CO2 adsorption is observed in any case. This is due to the decreased affinity of amine-based adsorbents toward NO as opposed to SO2. The more reactive nitrogen oxide, NO2, is shown to have a minimal impact on CO2 adsorption when it is present at low levels in the simulated flue gas. Among the adsorbents investigated, the results demonstrate that secondary amine containing adsorbents are more stable to SOx and NOx impurities in CO2 capture processes than those that contain primary amine groups.
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