Embonini yanamuhla yamakhemikhali esemhlabeni wonke, ukuguquguquka kwentengo yezinto ezibonakalayo kufana namatshe ajikijelwa echibini, athumela ukugeleza emikhiqizweni ebonakala ingahlobene nomfula. I-Acesulfame-K,{2}}i-sweetener ephezulu esetshenziswa kabanzi kushukela-iziphuzo nokudla kwamahhala, injalo. Isixhumanisi esimangalisayo phakathi kwentengo yawo kanye nenani likawoyela ongahluziwe ovela ezindaweni ezikude zikawoyela kuveza ukuxhuma okuyinkimbinkimbi nokuyinkimbinkimbi. Ukuze sixazulule le ndida, sidinga ukulandelela indlela yokudlulisa isinyathelo ngesinyathelo ngochungechunge lwezimboni oluxhumene ngokuqinile, ukusuka emthonjeni kuye emkhiqizweni wokugcina.
I. Umthombo Wokuguquguquka Kwentengo Kawoyela: I-Collective Resonance Ochungechungeni Lwekhemikhali
Lapho amanani entengo kawoyela wamazwe ngamazwe elokhu ephezulu ngokuqhubekayo, eyokuqala ukuzwa umthelela izimboni zamakhemikhali eziyisisekelo ezithembele ku-petroleum namalahle njengezitokwe zokudla. Ukukhuphuka kwamanani kawoyela kukhuphula ngqo izindleko zamakhemikhali emvelo ayisisekelo njenge-olefin nama-aromatics, asebenza njengesisekelo semboni yamakhemikhali yesimanje futhi ayingxenye yokukhiqizwa kwayo yonke imikhiqizo yamakhemikhali. Nokho, ithonya lamanani kawoyela aligcini lapho. Ngezindlela eziyinkimbinkimbi ezifana nokushintshwa kwamandla kanye nokudlula kwezindleko,{3}}zinyusa amanani entengo yemithombo yamandla ehlukile kanye nempahla ehlobene njengamalahle nesibabule. Isibabule, okuqinile okuphuzi okubonakala kungahlobene namafutha, yilona kanye ibhuloho eliyinhloko elixhumanisa amanani kawoyela ku-Acesulfame-K.
Kungani intengo yesibabule ikhuphuka namanani kawoyela? Ngakolunye uhlangothi, ukucwengwa kwe-petroleum kukhiqiza inqwaba yezinhlanganisela zesulfure, futhi isibabule esitholakala ngezinqubo ze-hydrodesulfurization siwumthombo omkhulu womhlaba wonke wokuphakelwa. Nakuba amanani entengo kawoyela aphakeme angase enze abahluzi bakhuphule amanani okusebenza{1}}okungase kukhuphule isibabule{2}}ngomkhiqizo ophumayo{3}}isici esibaluleke kakhulu ukuthi ukukhuphuka kwamanani kagesi kukhuphula izindleko kuwonke wonke ezimayini, ezokuthutha, nezokukhiqiza. Njengempahla eyinqwaba, intengo yesibabule ngokwemvelo ilandela okufanayo. Ngakolunye uhlangothi, amalahle (omunye umthombo wamandla othintwa amanani kawoyela) nawo anomthelela ekuhlinzekweni kwesibabule lapho esetshenziswa ezinqubweni ezifana nokukhiqizwa kwe-sulfuric acid, lapho isibabule sitholwa emagesini avuthayo. Ngakho-ke, ukukhuphuka kwentengo kawoyela ekugcineni kuhumushela amanani aphezulu esulfure ngenhlanganisela yokuxhumana kwamandla kanye nezingcindezi zezindleko.
II. Inodi engukhiye: Ukuguqulwa kusuka kuSulfur kuya kuSulfur Trioxide
Isizathu sokuthi isulfure ingaba nomthelela ku-Acesulfame-K ukuthi iwumthombo wokugcina we-sulphur trioxide (SO₃), into eluhlaza ebalulekile ekukhiqizeni isishukela. Ukuze uqonde lokhu, kuyasiza ukubuyekeza kafushane inqubo yezimboni yokukhiqiza i-sulphur trioxide.
Ukukhiqizwa kwezimboni zesimanje zesulphur trioxide kuncike cishe kuphela endleleni yokuxhumana, ebandakanya izinyathelo ezimbili eziyinhloko:
Isinyathelo sokuqala ukukhiqiza i-sulphur dioxide (SO₂). Lesi sigaba sikhiqiza igesi ye-SO₂ ngokushisa ngokugcwele isibabule{1}esiqukethe isitoko. Phakathi kwezinketho ezitholakalayo, isulfure ikhethwa ngenxa yokuhlanzeka kwayo okuphezulu kanye nephrofayili encane yokungcola. Isibabule esiwuketshezi sishiswa esithandweni esivuthayo esinomoya owomile, sikhiphe ngokuqondile{4}}umfudlana wokugxilisa kakhulu wegesi ye-SO₂. Ukusabela kuthi: S + O₂ → SO₂. Lesi sinyathelo sibeka isisekelo salo lonke iketango, nesibabule esisebenza njengomhlinzeki wezinto ezibalulekile.
Isinyathelo sesibili i-catalytic oxidation ye-SO₂ kuya ku-SO₃. Lesi yisigaba esiwumongo nesibucayi kakhulu ngokobuchwepheshe. Emazingeni okushisa phakathi kwe-400℃kanye ne-600 degree, nokusebenzisa i-vanadium pentoxide (V₂O₅) njenge-catalyst, i-SO₂ ekhiqizwa esinyathelweni sokuqala isabela ngokuqhubekayo nge-oxygen ukuze yakhe i-SO₃. Lokhu ukusabela okubuyisela emuva, okushisayo: 2 SO₂ + O₂ ⇌ 2 SO₃. Ngokusebenzisa izigaba zokuguqula eziningi ochungechungeni, izinqubo zezimboni zingafinyelela izinga lokuguqulwa eliphelele le-SO₂ elidlula ama-99%.
Ngakho-ke, isibabule siwumthombo obaluleke kakhulu futhi oqondile we-sulphur trioxide. Ngaphandle kwesibabule, bekungeke kwenzeke ukukhiqiza i-SO₃ ngezinga elikhulu ngokonga nangempumelelo.
III. Ukudluliswa kweChain: Ukwenziwa Kwezindleko ukusuka ku-Sulfur Trioxide ukuya ku-Acesulfame-K
I-sulphur trioxide idlala indima ebalulekile ekuhlanganiseni kwe-Acesulfame-K (igama lekhemikhali: acesulfame potassium). Ngesikhathi sokukhiqiza, i-SO₃ isebenza njenge-reagent ebalulekile yokuguqula amabhayisikili, ithuthukise ukwakheka kwendandatho eyingqayizivele-yamalungu ayisithupha enikeza i-acesulfame potassium ukunambitheka kwayo okumnandi. Ngakho-ke, i-SO₃ iyinto ebalulekile nengenakugwenywa yokusetshenziswa kwe-Acesulfame-K.
Uma intengo yemakethe yesibabule ikhuphuka, izindleko zokukhiqiza zomkhiqizo wawo ongezansi{0}}ze-sulphur trioxide{1}}zikhuphuka ngokuqondile. Lokhu kwenyuka kwezindleko akupheli; isabalalisa ezansi nomfula eduze kochungechunge lwezimboni. Njengoba i-Acesulfame-Abakhiqizi be-K bethenga i-SO₃ ngamanani aphezulu, izindleko zabo zokukhiqiza zikhushulelwa phezulu nakanjani. Ukuze kugcinwe amamajini enzuzo anengqondo, abakhiqizi banokuncane abangakwenza ngaphandle kokukhulisa-intengo yasefekthri ye-Acesulfame{7}}K. Ngale ndlela, ukucindezela kwezindleko kudluliselwa kusuka ku-sulphur kuya ku-SO₃, futhi ekugcineni ukusuka ku-SO₃ kuya ku-Acesulfame-K.
IV. Umphumela Wesikhulisi: Isakhiwo Semakethe Ye-Oligopolistic
Uma lokhu bekuwukudlula nje kwezindleko-, ukukhuphuka kwentengo ye-Acesulfame{1}K kungase kube kuncane futhi kubambezeleke. Kodwa-ke, isakhiwo semakethe esiyingqayizivele semboni ye-Acesulfame{3}}K ikhulisa kakhulu ukuxhunyaniswa kwentengo, yenze konke ukuguquguquka kwentengo kawoyela kubonakale ngokushesha futhi ngokusobala kukhotheshini ye-sweetener.
Imakethe yomhlaba wonke ye-Acesulfame-K igxile kakhulu, ngobuningi bamandla okukhiqiza alawulwa izinkampani ezimbalwa eziholayo{1}}i-oligopoly yakudala. E-China, amafemu afana ne-Anhui Jinhe VITA amnandi kanye ne-NTAC aphethe imakethe. Lesi sakhiwo sisho ukuthi abadlali abaphambili basebenzisa amandla entengo abalulekile, kuyilapho amakhasimende angezansi enenzuzo ebuthakathaka yokuxoxisana.
Uma izindleko zempahla eluhlaza (njengalezo zesulfure-etholakala nge-SO₃) zikhuphuka, lezi zinkampani eziholayo azikwamukeli nje ukucindezelwa kwemajini; esikhundleni salokho, bakhuphula amanani ngokuqhubekayo. Isibonelo, umbiko wakamuva wocwaningo lwemboni uphawule ngokusobala ukuthi "ukwenyuka kwezindleko zempahla eluhlaza kuqinise ukuzimisela kwabakhiqizi ukugcina amanani," okuveza ngokucacile ukuziphatha kwamanani okumatasa kwamafemu e-oligopolistic ngaphansi kwengcindezi yezindleko. Yilokhu ngqo "ukulungiswa kwentengo yomkhiqizi" okwenza intengo yemakethe ye-Acesulfame{3}}Izwele kakhulu ezinguqukweni zezindleko zempahla eluhlaza, okuholela ezimpendulweni ezisheshayo nezicace kakhudlwana.
V. Isikhathi eside-Umbono Wesikhathi: Amanani Kawoyela Njengenkomba Eyinhloko
Esikhathini eside-emkhathini womkhathizwe, kuyilapho i-Acesulfame{1}}intengo ye-K iphinde ithonywe izici ezithile ezifana nokunikezwa-okuguquguqukayo kwezidingo, izinqubomgomo zemvelo, nokugcinwa kwezitshalo ngokuhamba kwesikhathi, isikhonkwane sokugcina sentengo yayo sihlala siwuwoyela ongahluziwe. Uwoyela ongahluziwe awusebenzi nje kuphela njengendawo yokubeka amanani ohlelo lwamandla omhlaba kodwa futhi umi njengendawo yokuqala yochungechunge lokuphakelwa kwamakhemikhali amaningi. Nakuba amanani entengo yesibabule enomthelela oqondile, intengo yesibabule uqobo iqhutshwa kakhulu uwoyela ongahluziwe kanye nomjikelezo obanzi wamandla kanye nempahla.
Ngakho-ke, lapho abahlaziyi bebikezela amathrendi entengo e-Acesulfame-K yesikhathi esizayo, ngeke bakwazi ukuziba umkhondo wezintengo zikawoyela zamazwe ngamazwe. Uma nje uwoyela ongahluziwe usasele kumazinga aphakeme, uchungechunge lokudlulisa oluphelele-"amanani kawoyela → izindleko zamandla nempahla → isulfure → SO₃ → Acesulfame-K"{4}}zizogcina izindleko zokukhiqiza ze-Acesulfame-K ziphezulu, okwenza intengo yayo yehle kakhulu kunokukhuphuka.
Isiphetho
Kafushane, isizathu sokuthi izintengo zikawoyela zibe nomthelela entengo ye-Acesulfame-K isendleleni ecacile nexhumene yokudlulisa izimboni: ukukhuphuka kwamanani kawoyela kwenyusa izindleko zesulfure, esebenza njengempahla yokuqala yokukhiqiza i-sulphur trioxide. I-sulphur trioxide, yona, iyi-reagent ebalulekile edingekayo ukuze kuhlanganiswe i-Acesulfame-K, futhi izingcindezi zezindleko zisakazeka eduze kweketango "sulphur → sulfur trioxide → Acesulfame-K." Ngaleso sikhathi, ukwakheka kwe-oligopolistic yemakethe ye-Acesulfame-K iholela abadlali abavelele ukuthi bakhuphule ngokushesha izintengo ukuze badlulisele izindleko futhi bavikele inzuzo, ngaleyo ndlela kukhulise lokhu kuxhumana kwentengo. Ekugcineni, intengo kawoyela yamazwe ngamazwe ebonakala ikude ithonya umthombo wobumnandi kushukela wethu-iziphuzo zamahhala{8}}inani le-Acesulfame-K{10}}ngokuhlukaniswa okuyinkimbinkimbi kwabasebenzi ohlelweni lwesimanje lwezimboni. Lona umfanekiso ocacile wemvelo ehlanganiswe ngokuqinile yochungechunge lwezimboni zamakhemikhali kanye ne-microcosm evamile yobudlelwano obuncikene ngaphakathi kohlelo lwezimboni zomhlaba wonke.