Isabela kanjani i-Phenol ne-Acetone Condensation for BPA Production?

I-Phenol ne-acetone zithola ukusabela kokuqina ngaphansi kwe-catalysis ye-acid medium ukuze kukhiqizwe i-Bisphenol A BPA. Ukusabela okuyinhloko akuyinkimbinkimbi, futhi izimo zokusabela zincane kakhulu. Ngokuvamile kungaqhubeka kahle ngokucindezela okuvamile kanye no-60 - 90 °C. Inqubo yokukhiqiza ye-BPA ayinde, ikakhulukazi iqukethe izingxenye ezine: ukusabela kokuqina, ukwakheka kwe-adduct crystallization, ukususwa kwe-phenol nokuhlanzwa, kanye nokubuyiselwa kotshwala bomama. Kodwa-ke, i-polycarbonate - grade BPA inezidingo zekhwalithi ephezulu kakhulu, edinga ubumsulwa obungaphezu kuka-99.5%, ingxenye ye-phenol mass engaphansi kuka-5 × 10⁻⁵, umbala we-APHA ongaphansi kuka-20, kanye nemikhawulo endaweni yokubanda, umlotha, ama-ion ensimbi, njll. Njengoba i-Bisphenol A BPA iyinto ezwela ukushisa futhi ezwela umoya-mpilo enendawo yokubilisa ephezulu kakhulu (360.5 °C), lezi zici ziletha izinkinga eziningi zobunjiniyela bamakhemikhali ekukhiqizweni kwe-Bisphenol A BPA esezingeni eliphezulu.