Amakhathalogi weFischer-Tropsch athuthukisiwe nge-Sonication

I-Synthesis eyenziwe ngcono kwe-Fischer-Tropsch Catalysts ene-Ultrasound: Ukwelashwa kwe-Ultrasonic kwezinhlayiya ezinamandla kusetshenziselwa izinhloso eziningi. I-Ultrasonic synthesis isiza ukudala izinhlayiya ze-nano-modified noma ezisebenzayo, ezinomsebenzi omkhulu wokuqinisa. Ama-catalysts asetshenzisiwe futhi anobuthi angalulama kalula futhi ngokushesha asetshenziswe ukwelashwa komhlaba ongaphezulu, okususa ukufudusa ukufakazela amandla kokuthonya. Ekugcineni, ukususwa kwe-ultrasonic deagglomeration kanye nokuhlakazeka kubangela ukufana, ukusatshalaliswa kokusakazwa kwezinhlayiya eziyisiyaluyalu ukuze kuqinisekiswe indawo ephezulu yokusebenziseka komhlaba nokudluliselwa kwenqwaba ngokuguqulwa okukhulu kwenhliziyo.

Imiphumela ye-Ultrasonic kuCatalyst

I-Ultra enamandla amakhulu yaziwa kakhulu ngethonya layo elihle ekuphendukeni kwamakhemikhali. Lapho kukhiqizwa amagagasi amakhulu e-ultrasound ibe yi-hydrate ephakathi nendawo ye-acoustic. I-Ultrasonic cavitation ikhiqiza izimo zasendaweni ezedlulele ngamazinga okushisa aphakeme kakhulu afinyelela ku-5,000K, izingcindezi ze-approx. Ama-2000atm, namajethi koketshezi afinyelela ku-280m / s velocity. Isimo se-acoustic cavitation kanye nemiphumela yaso ezinqubweni zamakhemikhali yaziwa ngaphansi kwegama elithi sonochemistry.
Ukusetshenziswa okujwayelekile kwe-ultrasonics ukulungiswa kwezindawo ezinamandla kakhulu: amandla e-ultrasound cavization enza kusebenze indawo yomthangalisi njengoba ukuguguleka kwe-cavitational kukhiqiza indawo engafinyeleleki, esebenzayo kakhulu. Ngaphezu kwalokho, ukudluliselwa ngobuningi kuthuthukiswa kakhulu ngokusakazeka kweziyaluyalu. Ukushayisana kwezinhlayiyana okuphezulu okubangelwa ukuqubuka kwe-acoustic kususa ukugoqeka kwe-oksijeni yangaphandle yezinhlayiya ze-powder okuholela ekuvuseleleni kabusha komzimba obanga amandla.

Ukulungiswa kwe-Ultrasonic kwe-Fischer-Tropsch Catalysts

Inqubo yeFischer-Tropsch iqukethe ukusabela kwamakhemikhali okuguqula ingxube ye-carbon monoxide ne-hydrogen ibe yi-hydrocarbons eyi-liquid. Ngokuhlanganiswa kwe-Fischer-Tropsch, ama-catalysts ahlukahlukene, kepha asetshenziswa kaningi yi-cobalt iron, iron, ne-ruthenium yenguquko. Ukushisa okuphezulu kwe-Fischer-Tropsch synthet kusetshenziswa ngensimbi yensimbi.
Njengoba amakhathalogi e-Fischer-Tropsch ethambekele ekufakweni kobuthi ngokufakwa ngamakhompiyutha aqukethe isibabule, ukuvuselelwa kwe-ultrasonic kubaluleke kakhulu ukuze kulondolozwe umsebenzi wokuqinisa nokukhetha okugcwele.

Izinzuzo ze-Ultrasonic Catalyst Synthesis

  • Izimbotshana noma i-crystallization
  • (Nano-) Izinhlayiyana ezinobukhulu obulawulwa kahle nesimo
  • Izakhiwo ezingaphezulu eziguquliwe nezisebenzayo
  • I-syntnt of of doped noma core-shell izinhlayiya
  • Ukuhleleka okuhle kakhulu

I-Ultrasonic Synthesis ye-Core-Shell Catalysts

Ama-nanoreartility ama-core-igobolondo yi-nanoparticles ebiyelwe futhi evikelwe igobolondo elingaphandle elihlukanisa ama-nanoparticles futhi livimbele ukufuduka kwawo kanye nokuqina ngesikhathi sokushukuma okunamandla

UPirola et al. (2010) balungiselele ukwengeza izisekeli ezinsimbi ezisekela insimbi esetshenziswa yi-Fischer-Tropsch ngokulayisha okuphezulu kwensimbi esebenzayo. Ocwaningweni lwabo kukhonjiswa ukuthi ukufakwa kwezimpawu zokusizwa kwe-silica kuthuthukisa ukuthuthukiswa kwesimbi futhi kwandisa umsebenzi wokuqinisa. Imiphumela ye-Fischer-Tropsch synthesis iveze ama-catalysts alungiselelwe yi-ultrasonication njengokusebenza kahle kakhulu, ikakhulukazi lapho kwenziwa impregnation ye-ultrasonic kumvelo we-argon.

I-UIP2000hdT - 2kW ultrasonicator yezinqubo eziqinile ze-liquid.

I-UIP2000hdT – I-2kW enamandla i-ultrasonicator ukuphatha izinhlayiya ze-nano-.

Isicelo solwazi




Qaphela kwethu Inqubomgomo yobumfihlo.


I-Ultrasonic Catalyst Reactivation

Ukwelashwa kwesizinda se-Ultrasonic kuyindlela esheshayo futhi esebenzayo yokuvuselela kabusha uphinde usebenze kabusha ama-catalysts asetshenzisiwe futhi anobuthi. Ukuvuselelwa kabusha kwencwadi yokubamba iqhaza kuvumela ukwenziwa kabusha kwayo futhi iphinde isetshenziswe futhi ngaleyo ndlela igxathu nenqubo yezomnotho neinobungani bemvelo.
Ukwelashwa kwezinhlayiyana ze-Ultrasonic kususa i-inactivating fouling nokungcola kusuka kuzinhlayiya ezinamandla, ezivimba amasayithi okuphendula okubuthakathaka. Ukwelashwa kwe-ultrasonic kunikeza inhlayiya ebabayo ukugeza kwe-jet engaphezulu, ngaleyo ndlela isuse imali esizeni esisebenza ngamandla. Ngemuva kwe-ultrasonication, umsebenzi wokuvuselela ubuyiselwa ekusebenzeni okufanayo nokuvuselela okusha. Ngaphezu kwalokho, i-sonication ihlephula ama-agglomerates futhi inikeze ukusatshalaliswa okungatheni, kwezinhlayiya ezihlakazekile, ezandisa indawo yangaphezulu kwenhlabathi futhi ngaleyo ndlela isayithi elisebenzayo lokuvuselela. Ngakho-ke, ukuvuselelwa kokuvuselela okuvuselela amandla we-ultrasonic kumakhathoni okwenziwa kabusha nendawo ephezulu yokusebenza kwendawo yokudlulisa ngobuningi.
Ukuvuselelwa kabusha kwe-Ultrasonic okuvuselela kusebenza kwezinhlayiya zamaminerali nezinsimbi, (khulu-) izinhlayiya zobumba nama-nanocomposites.

I-High Performance Ultrasonic Systems ye-Sonochemistry

Iprosesa eprosesa ye-UIP4000hdT, i-4kW enamandla i-ultrasonorHielscher Ultrasonics’ ama-processor ultrasonic ama-industriel angaletha ama-amplitudes aphakeme kakhulu. Amplitudes angafika ku-200μm angaqhutshwa kalula ngokuqhubekayo ku-24/7 ukusebenza. Nge-amplitudes ephakeme nakakhulu, i-sonotrode e-ultrasonic eyenziwe ngezifiso iyatholakala. Ukuqina kwemishini ye-ultrasonic ye-Hielscher kuvumela ukusebenza komsebenzi we-24/7 emsebenzini obuthakathaka nasezindaweni ezinzima.
Amakhasimende ethu anelisekile ngokuqina okuqinile nokuthembeka kwezinhlelo zikaHielscher Ultrasonic. Ukufakwa emikhakheni yesicelo esisebenza kanzima, izindawo ezifunwayo kanye nokusebenza kwe-24/7 kuqinisekisa ukucutshungulwa okusebenzayo nokunempilo. Ukuqina kwenqubo ye-Ultrasonic kunciphisa isikhathi sokucubungula futhi kufinyelela imiphumela engcono, ie izinga eliphakeme, isivuno esiphakeme, imikhiqizo emisha.
Ithebula elingezansi linikeza isibonakaliso somthamo wokucubungula we-ultrasonicators wethu:

Iqoqwana Ivolumu flow Rate Amadivayisi ezinconyiwe
0.5 kuya ku-1.5mL na I-VialTweeter
1 kuya ku-500mL 10 kuya ku-200mL / min UP100H
10 kuya ku-2000mL 20 kuya ku-400mL / min UP200Ht, UP400St
0.1 kuya ku-20L 0.2 kuya ku-4L / min I-UIP2000hdT
10 kuya ku-100L 2 kuya ku-10L / iminithi I-UIP4000hdT
na 10 kuya ku-100L / iminithi UIP16000
na sikhulu yinhlanganisela UIP16000

Xhumana nathi! / Cela Us!

Cela ulwazi oluthe xaxa

Sicela usebenzise ifomu elingezansi ukucela ulwazi olungeziwe mayelana nokuqamba kwe-ultrasonic nokubuyiselwa kwama-catalysts. Sizokujabulela ukuxoxa ngenqubo yakho nawe futhi sikunikeze uhlelo lwe-ultrasonic oluhlangabezana nezidingo zakho!









Sicela uqaphele wethu Inqubomgomo yobumfihlo.


Izincwadi / Izinkomba

  • Hajdu Viktória; Prekob Ádám; Muránszky Gábor; Kocserha István; Kónya Zoltán; Fiser Béla; Viskolcz Béla; Vanyorek László (2020): Catalytic activity of maghemite supported palladium catalyst in nitrobenzene hydrogenation. Reaction Kinetics, Mechanisms and Catalysis 2020.
  • Pirola, C.; Bianchi, C.L.; Di Michele, A.; Diodati, P.; Boffito, D.; Ragaini, V. (2010): Ultrasound and microwave assisted synthesis of high loading Fe-supported Fischer–Tropsch catalysts. Ultrasonics Sonochemistry, Vol.17/3, 2010, 610-616.
  • Suslick, K. S.; Skrabalak, S. E. (2008): Sonocatalysis. In: Handbook of Heterogeneous Catalysis. 8, 2008, 2007–2017.
  • Suslick, K.S. (1998): Kirk-Othmer Encyclopedia of Chemical Technology; 4th Ed. J. Wiley & Sons: New York, Vol. 26, 1998, 517-541.
  • Suslick, K.S.; Hyeon, T.; Fang, M.; Cichowlas, A. A. (1995): Sonochemical synthesis of nanostructured catalysts. Materials Science and Engineering A204, 1995, 186-192.



Amaqiniso Okufanele Ukwazi

Izicelo ze-Fischer-Tropsch Catalysts

I-Fischer-Tropsch synthesis iyisigaba sezinqubo ezinamandla ezisetshenziswa ekukhiqizweni kwamafutha namakhemikhali avela kugesi eyakhiwe (ingxube ye-CO ne-H2), okungaba
okususelwa kugesi yemvelo, amalahle, noma i-biomass inqubo ye-Fischer-Tropsch, isisetshenziswa soguquko olunensimbi esetshenziselwa ukukhiqiza ama-hydrocarbon kusuka kuzinto eziyisisekelo zokuqala i-hydrogen ne-carbon monoxide, engasuselwa ezinsizakalweni eziqukethe i-carbon ezinjengamalahle , igesi yemvelo, i-biomass, ngisho nemfucuza.