Ukuguqulwa kwe-propylene ku-propylene oxide kuyinqubo eyinkimbinkimbi edinga ukuqonda okuphelele kwezinqubo zokusabela kwamakhemikhali ezihilelekile. Lesi sihloko sicubungula izindlela ezahlukahlukene nezimo zokusabela ezidingekayo ukuze kuhlanganiswe i-propylene oxide kusuka ku-propylene.
Indlela ejwayeleke kakhulu yokukhiqiza i-propylene oxide iwukuba nge-oxidation ye-propylene nge-oxygen yamangqamuzana phambi kwe-catalyst. Indlela yokusabela ihilela ukwakheka kwama-peroxy radicals, abese esabela nge-propylene ukukhiqiza i-propylene oxide. I-catalyst idlala indima ebalulekile kulokhu kusabela, njengoba yehlisa amandla okuqalisa adingekayo ukuze kwakheke ama-peroxy radicals, ngaleyo ndlela ithuthukise izinga lokusabela.
Enye yezinto ezisetshenziswa kakhulu kulokhu kusabela i-silver oxide, elayishwa ezintweni ezisekelayo njenge-alpha-alumina. Izinto ezisekelayo zinikeza indawo ephezulu ye-catalyst, iqinisekisa ukuthintana okusebenzayo phakathi kwama-reactants kanye ne-catalyst. Ukusetshenziswa kwe-silver oxide catalysts kutholakale ukuthi kubangele isivuno esiphezulu se-propylene oxide.
I-oxidation ye-propylene kusetshenziswa inqubo ye-peroxide enye indlela engase isetshenziselwe ukukhiqizwa kwe-propylene oxide. Kule nqubo, i-propylene isabela nge-peroxide ephilayo phambi kwe-catalyst. I-peroxide ihlangana ne-propylene yakhe i-radical yamahhala emaphakathi, ebese ibola ukuze ikhiphe i-propylene oxide notshwala. Le ndlela inenzuzo yokuhlinzeka ngokukhetha okuphezulu kwe-propylene oxide uma kuqhathaniswa nenqubo ye-oxidation.
Ukukhethwa kwezimo zokusabela nakho kubalulekile ekunqumeni isivuno nokuhlanzeka komkhiqizo we-propylene oxide. Izinga lokushisa, ingcindezi, isikhathi sokuhlala, kanye nesilinganiso semvukuzane yama-reactants amanye amapharamitha abalulekile adinga ukuthuthukiswa. Kuye kwaphawulwa ukuthi ukwandisa izinga lokushisa nesikhathi sokuhlala ngokuvamile kubangela ukwanda kwesivuno se-propylene oxide. Kodwa-ke, amazinga okushisa aphezulu angabuye aholele ekwakhiweni kwemikhiqizo, ukunciphisa ukuhlanzeka komkhiqizo oyifunayo. Ngakho-ke, ibhalansi phakathi kwezivuno eziphezulu nokuhlanzeka okuphezulu kufanele kushaywe.
Ekuphetheni, ukuhlanganiswa kwe-propylene oxide kusuka ku-propylene kungafinyelelwa ngezindlela ezihlukahlukene, kuhlanganise ne-oxidation ngezinqubo ze-oxygen yamangqamuzana noma i-peroxide. Ukukhethwa kwezimo ze-catalyst kanye nokusabela kudlala indima ebalulekile ekunqumeni isivuno nobumsulwa bomkhiqizo wokugcina. Ukuqonda kahle izindlela zokusabela ezihilelekile kubalulekile ekwenzeni inqubo ibe ngcono futhi ithole i-propylene oxide yekhwalithi ephezulu.
Isikhathi sokuthumela: Mar-18-2024