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I-1.6 ~ 2.5mm Zeolite molecular sieve 3a 4a 5a structure, chemistry, and use

I-1.6 ~ 2.5mm Zeolite molecular sieve 3a 4a 5a structure, chemistry, and use

1.6~2.5mm Zeolite molecular sieve 3a 4a 5a structure, chemistry, and use Featured Image
  • 1.6~2.5mm Zeolite molecular sieve 3a 4a 5a structure, chemistry, and use
  • 1.6~2.5mm Zeolite molecular sieve 3a 4a 5a structure, chemistry, and use

Incazelo emfushane:

I-Zeolite ngesihlungo samangqamuzana luhlobo lwezinto ze-adsorbent noma zefilimu ezinama-micropores afanayo, ikakhulukazi aqukethe i-silicon, i-aluminium, i-oxygen nezinye izinsimbi zensimbi. Usayizi wayo wepore ulingana nosayizi ojwayelekile wamangqamuzana, futhi ama-molecule ehlukahlukene oketshezi ayahlungwa ngokuya ngosayizi wepore osebenzayo. I-Zeolite sieve yamangqamuzana ibhekisa kulawo aluminosilicates wemvelo nokwenziwa kwama-crystalline aluminosilicates asebenza ngesihlungo samangqamuzana. Isihlungo samangqamuzana seZeolite sesiphenduke isihloko esizimele ngenxa yesakhiwo nokusebenza kwaso okuhlukile. Ukusetshenziswa kwe-zeolite sieve yamangqamuzana kusabalale embonini ye-petrochemical, ukuvikelwa kwemvelo, ubunjiniyela begazi, imboni yokudla, imboni yezemithi namakhemikhali neminye imikhakha. Ngokuthuthuka kwezimboni ezahlukahlukene emnothweni wezwe, amathemba okufakwa kwezinsizi ze-zeolite zamangqamuzana abe anda ngokuya ebanzi.


Imininingwane yomkhiqizo

Amathegi womkhiqizo

Ukusebenza kwe-Adsorption

Ukukhishwa kwe-zeolite ngesihlungo samangqamuzana kuyinqubo yokushintsha komzimba. Isizathu esiyinhloko sokukhishwa kwe-adsorption luhlobo lwe "surface force" olukhiqizwa amandla adonsela phansi e-molecular esebenza endaweni eqinile. Lapho uketshezi lungena, amanye ama-molecule kulolo ketshezi ahlangana nobuso be-adsorbent ngenxa yokunyakaza okungajwayelekile, kubangele ukugxila kwamangqamuzana ngaphezulu. Nciphisa inani lama-molecule anjalo kuketshezi ukufeza inhloso yokwehlukanisa nokususa. Njengoba kungekho ushintsho lwamakhemikhali ku-adsorption, inqobo nje uma sizama ukuxosha ama-molecule agxile ngaphezulu, i-zeolite sieve yamangqamuzana izoba namandla we-adsorption futhi. Le nqubo inqubo ephindayo yokukhangisa nge-adsorption, ebizwa ngokuthi ukuhlaziywa noma ukuvuselelwa. Njengoba isihlungo se-zeolite samangqamuzana sinosayizi ofanayo wepore, kuphela lapho ubukhulu be-molecular dynamics bungaphansi kwesisefo se-zeolite yamangqamuzana lapho singangena kalula ngaphakathi komgodi we-crystal bese sikhangiswa. Ngakho-ke, i-zeolite sieve yamangqamuzana ifana nesihlungo samagesi nama-molecule e-liquid, futhi kunqunywa ukuthi kufanele kukhishwe noma cha ngokuya ngosayizi we-molecule. . Njengoba isihlungo se-zeolite samangqamuzana sinokuqina okuqinile emgodini we-crystalline, singaba nethonya elinamandla ebusweni besihlungo samangqamuzana se-zeolite esinama-molecule aqukethe amaqembu we-polar, noma ngokuncenga ukwehlukaniswa kwamamolekyu angenakulinganiswa ukukhiqiza ukukhangisa okunamandla. Lolu hlobo lwama-molecule we-polar noma ahlukaniswe kalula kulula ukukhishwa yi-polar zeolite sieve yamangqamuzana, ekhombisa okunye ukukhetha kokukhetha kwe-zeolite sieve yamangqamuzana.

Ukusebenza kwe-Ion exchange

Ngokuvamile, ukushintshaniswa kwe-ion kusho ukushintshaniswa kwezinxephezelo zesinxephezelo ngaphandle kohlaka lwe-zeolite sieve yamangqamuzana. Ama-ion wesinxephezelo angaphandle kohlaka lwesihlungo samangqamuzana e-zeolite ngokuvamile angama-proton nezinsimbi ze-alkali noma izinsimbi zomhlaba ze-alkaline, ezishintshaniswa kalula ngama-valence metal ion-type zeolite sieve zamangqamuzana kusisombululo esinamandla sikasawoti wensimbi. Ions kulula ukufuduka ngaphansi kwezimo ezithile, njengezisombululo ezinamanzi noma amazinga okushisa aphezulu.

Kwisixazululo samanzi, ngenxa yokhetho oluhlukile lwe-ion lwama-sieve wamangqamuzana we-zeolite, izakhiwo ezahlukahlukene ze-ion exchange zingakhonjiswa. Ukusabela kokushintshaniswa kwe-hydrothermal ion phakathi kwezinsimbi zensimbi kanye ne-zeolite sieve yamangqamuzana kuyinqubo yokusabalalisa yamahhala. Izinga lokusabalalisa livimbela isilinganiso sokuphendula sokushintshisana.

Ukusebenza kwe-Catalytic

Ama-sieve wamangqamuzana e-Zeolite anesakhiwo esijwayelekile esiyingqayizivele sekristalu, ngasinye sinesakhiwo se-pore sobukhulu nokuma okuthile, futhi sinendawo enkulu ethile ebanzi. Iningi le-zeolite sieve yamangqamuzana anezikhungo eziqinile ze-asidi ngaphezulu, futhi kunensimu eqinile yeCoulomb kuma-crystal pores okwehlukaniswa. Lezi zici zenza kube isisusa esihle kakhulu. Ukusabela okwehlukanisayo okwenziwa ngamakhemikhali kwenziwa kwizikhuni eziqinile, futhi umsebenzi wokuthinta uhlobene nosayizi wama-crystal pores we-catalyst. Lapho i-zeolite sieve yamangqamuzana isetshenziswa njenge-catalyst noma i-catalyst carrier, inqubekela phambili yokuphendula okulawulwa ilawulwa ngosayizi wepore we-zeolite sieve yamangqamuzana. Usayizi nokuma kwama-crystal pores nama-pores kungadlala indima ekhethiwe ekuphenduleni okunezinkinga. Ngaphansi kwezimo zokuphendula ezijwayelekile, ama-siole wamangqamuzana e-zeolite adlala indima enkulu ekuqondisweni kokuphendula futhi abonise ukusebenza kokukhetha okwakhekayo kokuma. Lokhu kusebenza kwenza izihlalu ze-zeolite zamangqamuzana zibe yinto entsha yokuthambisa enamandla amakhulu.

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