I-Pseudo-boehmite

I-Pseudo-boehmite yeyona nto iphambili xa kusenziwa i-gamma alumina, kuba kufuneka kususwe amanzi kuphela nge-calcination malunga ne-447 C. Ulawulo lwezinto ezisebenzayo ngexesha lokwenziwa kwe-pseudo-boehmite: ukugcwala kwezisombululo yinto ebaluleke kakhulu, ukongeza i-pH, ubushushu, ukungcola kunye nohlobo lwee-reagents [3,4]. Qinisekisa ubunyulu bale nto kwaye ezi zinto zitshintshayo zimisela imo, ubunjani kunye nezakhiwo zayo ze-precipitate. Ke ngoko, kubalulekile ukulandela izinto ezenzeka ngexesha lokwenziwa, ukuze kuqikelelwe isivuno kunye nomgangatho wemveliso yokugqibela. Kulo msebenzi, ukwenziwa kwe-pseudo-boehmite kwaphuhliswa ngendlela yemvula, kusetyenziswa isisombululo se-aluminium sulfate supersaturated ye-industrial grade kunye ne-ammonium hydroxide egxininisiweyo (28%) njengee-reactants; le ndlela eyaziwayo yaphuculwa ukunciphisa ubushushu bempendulo ngaphantsi kweqondo lokubila le-ammonia. Ulawulo lobushushu be-reactant medium lufikelelwe ngokufunyanwa kwedatha kunye nokulawulwa ngokuzenzekelayo kwe-heating medium. Kuboniswe ukuba ukusebenza kwe-reactor kwi-isothermal conditions kuqinisekisa umgangatho wokugqibela we-pseudo-boehmite eveliswayo.