Boehmite wachinyengo

Pseudo-boehmite ndiye njira yabwino kwambiri yopangira gamma alumina, chifukwa kuchotsa madzi ndi calcination pa kutentha kwa pafupifupi 447 C ndikofunikira. Kuwongolera zosintha zogwirira ntchito panthawi yopanga pseudo-boehmite: kukhuta kwa mayankho ndikofunikira kwambiri, kuphatikiza pH, kutentha, zonyansa ndi mtundu wa ma reagents [3,4]. Onetsetsani kuti zinthuzi ndi zoyera ndipo zosinthazi zimatsimikizira mawonekedwe, kapangidwe ndi kapangidwe kake ka precipitate. Chifukwa chake, ndikofunikira kutsatira zochitika zomwe zimachitika panthawi yopanga, kuti mudziwiretu zokolola ndi mtundu wa chinthu chomaliza. Mu ntchitoyi, kupanga pseudo-boehmite kunapangidwa pogwiritsa ntchito njira ya precipitation, pogwiritsa ntchito industrial grade aluminium sulfate supersaturated solution ndi concentrated ammonium hydroxide (28%) ngati ma reactants; njira yodziwikayi idasinthidwa kuchepetsa kutentha kwa reaction pansi pa bolling point ya ammonia. Kulamulira kutentha kwa reactant medium kunafikiridwa ndi kupeza deta ndikusintha zokha kwa heating medium. Zawonetsedwa kuti kugwiritsa ntchito reactor atisothermal conditions kumatsimikizira mtundu womaliza wa pseudo-boehmite wopangidwa.