Ukusetyenziswa kwe-zinc chloride kwi-activated Carbon Activation

Ikhabhoni esebenzayo, ebhiyozelwa ngenxa yendawo yayo ebanzi kunye nobuchule bokubhengeza obumangalisayo, yenze i-niche kumashishini amaninzi. Ukusetyenziswa kwayo kususela ekucoceni amanzi kunye nokucoca umoya ukuququzelela ukuhlanganiswa kweekhemikhali kunye nokugcinwa kwamandla. Phakathi kweendlela ezahlukeneyo zokuvula ezisetyenzisiweyo ukunyusa iipropathi ze Ikhabhoni esebenzayo, ukusetyenziswa I-zinc chloride iye yavela njengendlela esebenzayo ngokukodwa. Esi sithuba seblogi sijolise ekuphononongeni ngokubanzi indlela i-zinc chloride esetyenziswa ngayo ekusebenzeni kwekhabhoni esebenzayo, ukuphonononga kwiindlela zayo ezisisiseko, inkqubo yokuvula, izibonelelo zayo, kunye nemingeni ehambelana nayo.

I-Active Mechanism yeZinc chloride

Inkqubo yokuvuselela ebandakanya i-zinc chloride ityhila ngokusebenzisa i-synergy yezinto eziphathekayo kunye neekhemikhali. Xa i-zinc chloride isebenza njenge-arhente esebenzayo, idibanisa kunye nezixhobo ze-carbonaceous precursor kumaqondo okushisa aphezulu. Kwinqanaba le-molecular, i-zinc chloride isebenza njenge-agent e-dehydrating, ikhupha iimolekyuli zamanzi kwi-precursor. Oku kutshatyalaliswa kwamanzi kuqalisa ukuchithwa kwezinto eziphilayo, kubangela ukubunjwa kwee-pores ngaphakathi kwesakhiwo sekhabhoni.

Ngokwekhemikhali, i-zinc chloride isebenza njenge-catalyst yokulungiswa kwakhona kwee-athomu zekhabhoni, ukukhuthaza ukuphuhliswa kwenethiwekhi yekhabhoni elungelelanisiweyo kunye ne-porous. Njengoko iqondo lokushisa likhuphuka, i-zinc chloride iyanyibilika kwaye ingene kwi-precursor, ikhulise kakhulu indawo yoqhagamshelwano phakathi kwe-agent esebenzayo kunye ne-carbonaceous material. Olu nxibelelwano luphuculweyo luvumela inkqubo yokuvula esebenzayo ngakumbi, ekhokelela kubume bepore obuphezulu obubandakanya i-micropores, i-mesopores, kwaye ngamanye amaxesha iimacropores. Ubukho bobu bukhulu bahlukeneyo bobupore bubaluleke kakhulu, njengoko bunika ikhabhoni esebenzayo ekwaziyo ukubhengeza uluhlu olubanzi lweemolekyuli, ngokuxhomekeke kubukhulu bazo kunye neempawu.

Inkqubo yokuSebenza

Inkqubo yokusebenzisa i-zinc chloride inamanyathelo amaninzi alandelelanayo. Ekuqaleni, i-carbonaceous precursors, enokuthi ihambe ukusuka kwiinkuni kunye ne-coconut shells ukuya kumalahle, zityunyuziwe kwaye zilinganiswe kumlinganiselo ofanelekileyo. Emva koko, ezi zandulelayo zintywiliselwa kwisisombululo se-zinc chloride, inkqubo eyaziwa ngokuba yi-impregnation. Umlinganiselo wokungena, omele umlinganiselo we-zinc chloride kwi-precursor material, ulawulwa ngokucokisekileyo. Lo mlinganiselo uchaphazela kakhulu iimpawu zokugqibela zekhabhoni esebenzayo; umlinganiselo ophezulu ngokubanzi ukhokelela kubume bepore obucacileyo ngakumbi kodwa unokuchaphazela isivuno sekhabhoni esebenzayo.

Ukulandela ukufakwa, umxube uyomiswa ukuphelisa naluphi na ukufuma okugqithisileyo. Izinto ezomileyo ke ziphantsi konyango lobushushu ngaphakathi kwi-atmosfera engasebenziyo, efana nenitrogen okanye iargon. Eli nqanaba lepyrolysis lenzeka kumaqondo obushushu aphakathi kwama-400°C kunye nama-700°C. Ngethuba le nkqubo ye-thermal, i-zinc chloride ivuselela i-precursor ngokweendlela ezichazwe ngaphambili, ezikhokelela ekubunjweni kwekhabhoni esebenzayo. I-Post-pyrolysis, i-carbon esanda kwenziwa isebenze ihlanjwa ngokucokisekileyo ukususa nayiphi na i-zinc chloride eseleyo. Eli nyathelo lokuhlamba liyimfuneko ekuqinisekiseni ukucoceka kunye nokusebenza kwemveliso yokugqibela, njengoko nayiphi na i-zinc chloride eseleyo inokuphazamisa ukusebenza kwe-adsorption kwaye ibeka imingcipheko yokhuseleko kwizicelo ezithile.

Izinto eziluncedo kwiZinc Chloride Activation

Enye yeenzuzo ezibalulekileyo zokusebenzisa i-zinc chloride kwi-activated carbon activation ilele kulawulo oluchanekileyo olunikezelayo phezu kwesakhiwo sepore. Ngokulawula iiparamitha ezifana nomlinganiselo wokungena kunye nobushushu bokusebenza, abavelisi banokwenza ngokwezifiso ikhabhoni esebenzayo ukuhlangabezana neemfuno ezithile zezicelo ezahlukeneyo. Ngokomzekelo, kwizicelo ze-gas adsorption apho i-adsorption yeemolekyuli ezincinci zibaluleke kakhulu, ikhabhoni esebenzayo enoxinano oluphezulu lwe-micropores inokwenziwa. Ngokuchaseneyo, i-adsorption ye-liquid-phase, i-carbon activated ene-balanced pore structure, enomlinganiselo omkhulu we-mesopores, ihlala ikhethwa.

Ukusebenza kwe-zinc chloride kukwaqhayisa ngokusebenza okuphezulu, okukhokelela kwikhabhoni esebenzayo enommandla omkhulu kunye nomthamo omkhulu wepore. Oku kusebenza kakuhle kuthetha ukuba imathiriyeli ye-precursor encinci inokufuneka ukuvelisa ikhabhoni esebenzayo eneempawu ezinqwenelekayo xa kuthelekiswa nezinye iindlela zokuvula. Ngaphezu koko, inkqubo ikhawuleza kakhulu, inciphisa ixesha lokuvelisa kunye neendleko ezinxulumene noko. Ukongeza, i-zinc chloride ifumaneka ngokubanzi kwaye ixabisa kakhulu, nto leyo eyenza inkqubo yokuvula iyonke isebenze ngokwezoqoqosho, ngakumbi kwimisebenzi yokwenziwa komgangatho omkhulu.

Imingeni enokubakho kunye nezisombululo

Ngaphandle kokubaluleka kwayo okuninzi, i-zinc chloride activation ayinayo imingeni yayo. Enye yezinto eziphambili ezixhalabisayo yimpembelelo yayo yokusingqongileyo. I-Zinc chloride yikhemikhali enobungozi, kwaye ukulahlwa okungafanelekanga kwenkunkuma eyenziwe ngexesha lokuqalisa inkqubo, ngokukodwa amanzi amdaka ahlambayo aqulethe i-zinc chloride eseleyo, kunokukhokelela kungcoliseko lomhlaba namanzi. Ukunciphisa lo mba, ubugcisa obuphezulu bokucocwa kwamanzi amdaka, obufana nemvula yeekhemikhali kunye notshintshiselwano lwe-ion, lunokuphunyezwa ukususa i-ion ze-zinc kumanzi amdaka ngaphambi kokukhutshwa. Ukurisayikilishwa kunye nokusetyenziswa kwakhona kwesisombululo se-zinc chloride nako kunokunceda ukunciphisa unyawo lokusingqongileyo ngelixa uthoba iindleko zemveliso.

Omnye umngeni uphathelele kulawulo lomgangatho wemveliso yokugqibela. Ukususwa okungaphelelanga kwe-zinc chloride eseleyo kunokubangela ukubola kwezinye izicelo kwaye kuphazamise inkqubo ye-adsorption. Amanyathelo angqongqo olawulo lomgangatho abalulekile, kubandakanywa uhlalutyo oluthe gqolo lwekhabhoni evuliweyo yomxholo we-zinc oshiyekileyo kusetyenziswa ubuchule obuntsonkothileyo obufana ne-atomic absorption spectroscopy (AAS) okanye iplasma edityanisiweyo nge-inductively - optical emission spectroscopy (ICP - OES). Ukongezelela, ukulungiswa kwenkqubo yokuhlamba, njengokwandisa inani lamanyathelo okuhlamba okanye ukusebenzisa i-agent agents ezifanelekileyo, kunokunyusa ukukhutshwa kwe-zinc chloride eseleyo kunye nokuqinisekisa umgangatho wemveliso.

Ukuqukumbela, i-zinc chloride idlala indima ebaluleke kakhulu ekusebenzeni kwekhabhoni esebenzayo, inika iingenelo ezahlukileyo ngokwemigaqo yolwakhiwo lwepore ngokwezifiso, ukusebenza kakuhle, kunye nokusebenza kweendleko. Nangona kunjalo, ukujongana nemingeni enxulumene nokusingqongileyo kunye nomgangatho - kubalulekile kwimveliso ezinzileyo nesebenzayo yomgangatho ophezulu wekhabhoni esebenzayo. Njengoko imfuno yekhabhoni esebenzayo iqhubeka ikhula kuwo wonke amacandelo ahlukeneyo, uphando lwexesha elizayo kunye neenzame zophuhliso kwiinkqubo ezisekelwe kwi-zinc chloride ziya kugxila ekuphuculeni ngakumbi ukuzinza kokusingqongileyo kunye nokuphucula umgangatho wemveliso.