Acide P-toluic

1. Yateguwe na catalitike okiside ya p-xylene hamwe numwuka.Iyo uburyo bwumuvuduko wikirere bwakoreshejwe, xylene na cobalt naphthenate irashobora kongerwaho mumasafuriya, hanyuma umwuka ukamenyekana mugihe ushyushye kugeza 90 ℃.Ubushyuhe bwa reaction bugenzurwa kuri 110-115 ℃ mugihe cyamasaha 24, naho hafi 5% ya p-xylene ihinduka aside p-methylbenzoic.Gira ubukonje mucyumba, kuyungurura, kwoza akayunguruzo hamwe na p-xylene, hanyuma wumuke kugirango ubone aside p-methylbenzoic.P-xylene yongeye gukoreshwa.Umusaruro ni 30-40%.Iyo hakoreshejwe uburyo bwa okiside yumuvuduko, ubushyuhe bwa reaction ni 125 ℃, umuvuduko ni 0.25MPa, umuvuduko wa gaze ni 250L muri 1H, naho igihe cyo kubyitwaramo ni 6h.Hanyuma, xylene itarakozwe neza yashizwemo amavuta, ibikoresho byibitabo bya ogisijeni byahinduwe na acide hydrochloric acide kugeza kuri pH 2, irabyutsa, irakonja, irayungurura.Agatsima kayunguruzo kashizwe muri p-xylene, hanyuma kayungurura no gukama kugirango ubone aside p-methylbenzoic.Ibiri muri aside p-methylbenzoic byari hejuru ya 96%.Igipimo kimwe cyo guhindura p-xylene cyari 40%, naho umusaruro wari 60-70%.

2.Yateguwe na okiside ya p-isopropyltoluene hamwe na aside nitric.20% acide ya nitric na p-isopropyltoluene yaravanze, irashyuha kandi ishyushya 80-90 ℃ kuri 4h, hanyuma ishyuha kugeza 90-95 ℃ kuri 6h.Gukonjesha, kuyungurura, kongera gukora cake ya filteri hamwe na toluene kugirango utange p-methylbenzoic aside 50-53%.Byongeye kandi, p-xylene yahinduwe na aside nitricike yibanze kuri 30 h, kandi umusaruro wari 58%.