Phenol imathiriyeli ekrwada

Phenolyikhompawundi yeekhemikhali eziguquguqukayo ezinoluhlu olubanzi lwezicelo kushishino nakuphando.Ukulungiswa kwayo kwezorhwebo kubandakanya inkqubo yamanyathelo amaninzi aqala nge-oxidation ye-cyclohexane.Kule nkqubo, i-cyclohexane i-oxidized kwi-series intermediates, kuquka i-cyclohexanol kunye ne-cyclohexanone, eziguqulwa zibe yi-phenol.Makhe sihlolisise iinkcukacha zale nkqubo. 

 

Ukulungiswa kwezorhwebo kwephenol kuqala nge-oxidation ye-cyclohexane.Le mpendulo iqhutyelwa phambi kwe-agent oxidizing, njengomoya okanye i-oksijeni ecocekileyo, kunye ne-catalyst.I-catalyst esetyenzisiweyo kule mpendulo idla ngokuba ngumxube wesinyithi sokutshintsha, njenge-cobalt, i-manganese, kunye ne-bromine.Ukusabela kwenziwa kumaqondo obushushu aphezulu kunye noxinzelelo, ngokuqhelekileyo ukusuka kuma-600 ukuya kuma-900.°C kunye ne-10 ukuya kwi-200 i-atmospheres, ngokulandelanayo.

 

I-oxidation ye-cyclohexane iphumela ekubunjweni koluhlu lwabaphakathi, kuquka i-cyclohexanol kunye ne-cyclohexanone.Ezi intermediates ke iguqulelwa phenol kwinyathelo elilandelayo reaction.Le mpendulo iqhutyelwa phambi kwe-acid catalyst, njenge-asidi ye-sulfuric okanye i-hydrochloric acid.I-acid catalyst ikhuthaza ukuchithwa kwe-cyclohexanol kunye ne-cyclohexanone, okubangelwa ukubunjwa kwe-phenol kunye namanzi.

 

I-phenol ephumela ke ihlanjululwe nge-distillation kunye nezinye iindlela zokucoca ukususa ukungcola kunye nezinye iimveliso.Inkqubo yokucoca iqinisekisa ukuba imveliso yokugqibela ihlangabezana neemfuno zokucoceka kwizicelo ezahlukeneyo.

 

I-Phenol isetyenziswe kwizicelo ezahlukeneyo, kubandakanywa ukuveliswa kweepolycarbonates, i-Bisphenol A (BPA), i-phenolic resins, kunye nezinye iindidi ezahlukeneyo.Iipolycarbonates zisetyenziswa ngokubanzi kwimveliso yezikhongozeli zeplastiki, iilensi, kunye nezinye izinto ezibonakalayo ngenxa yokungafihli okuphakamileyo kunye nokuchasana neempembelelo.I-BPA isetyenziselwa ukuveliswa kwee-epoxy resins kunye nezinye izinto zokuncamathelisa, iingubo, kunye ne-composites.I-Phenolic resins isetyenziselwa ukuveliswa kwezinto ezinamathele, iingubo, kunye neengqungquthela ngenxa yokumelana nokushisa kunye neekhemikhali.

 

Ekugqibeleni, ukulungiswa kwezorhwebo kwe-phenol kubandakanya i-oxidation ye-cyclohexane, elandelwa ukuguqulwa kwama-intermediates kwi-phenol kunye nokuhlanjululwa kwemveliso yokugqibela.I-phenol ebangelwayo isetyenziswe kuluhlu olubanzi lwezicelo, kubandakanywa ukuveliswa kwezixhobo zeplastiki, i-adhesives, i-coatings, kunye ne-composites.


Ixesha lokuposa: Dec-11-2023