Anyị na-eji kuki iji kwalite ahụmịhe gị.Site n'ịga n'ihu na-achọgharị saịtị a, ị kwenyere na ojiji anyị ji kuki.Ozi ndị ọzọ.
Isiokwu a na-elekwasị anya n'elu acidity Njirimara nke oxide catalysts na-akwado (γ-Al2O3, CeO2, ZrO2, SiO2, TiO2, HZSM5 zeolite) na atụnyere nchọpụta nke elu ha site na-atụ okpomọkụ-emebere amonia desorption (ATPD).ATPD bụ usoro a pụrụ ịdabere na ya ma dị mfe nke elu, mgbe ejiri amonia jupụta na okpomọkụ dị ala, na-enwe mgbanwe mgbanwe okpomọkụ, nke na-eduga na desorption nke mkpụrụ ndụ nyocha yana nkesa okpomọkụ.
Site na nyocha nke ọnụọgụ na / ma ọ bụ qualitative nke ụkpụrụ desorption, enwere ike nweta ozi na ike nke desorption / adsorption na ọnụ ọgụgụ nke amonia adsorbed n'elu (amonia uptake).Dị ka molekul bụ isi, amonia nwere ike iji dị ka nyocha iji chọpụta acidity nke elu.Ihe data ndị a nwere ike inye aka ịghọta omume catalytic nke ihe nlele na ọbụna nyere aka mee ka njikọ nke usoro ọhụrụ dị mma.Kama iji ihe nchọpụta TCD ọdịnala, a na-eji ihe nleba anya quadrupole mass spectrometer (Hiden HPR-20 QIC) na ọrụ ahụ, jikọtara ya na ngwaọrụ ule site na capillary dị ọkụ.
Ojiji nke QMS na-enye anyị ohere ịmata ọdịiche dị n'etiti ụdị dị iche iche desorbed si n'elu na-ejighi ihe ọ bụla kemịkalụ ma ọ bụ anụ ahụ na ọnyà nwere ike imetụta nyocha ahụ n'ụzọ dị njọ.Nhazi nke ọma nke ike ionization nke ngwá ọrụ na-enyere aka igbochi nbibi nke ụmụ irighiri mmiri na ndabichi na-akpata na mgbama amonia m/z.A na-enyocha izi ezi na ntụkwasị obi nke data desorption nke amonia nke emebere okpomọkụ site na iji usoro usoro ihe omume na nnwale nnwale, na-egosipụta mmetụta nke ọnọdụ nnakọta data, gas na-ebu, nha nha, na geometry reactor, na-egosipụta mgbanwe nke usoro eji.
Ihe niile a na-amụ nwere ụdịdị ATPD dị mgbagwoju anya na-agbatị 423-873K, ewezuga cerium, nke na-egosipụta ọnụ ọgụgụ dị warara dị warara edozira nke na-egosi obere acidity.Ọnụ ọgụgụ data na-egosi ọdịiche dị na ntinye amonia n'etiti ihe ndị ọzọ na silica karịa usoro nke ịdị ukwuu.Ebe ọ bụ na nkesa ATPD nke cerium na-agbaso usoro Gaussian n'agbanyeghị mkpuchi elu na ọnụ ọgụgụ ọkụ ọkụ, a na-akọwa omume nke ihe a na-amụ dị ka linearity nke ọrụ Gaussian anọ jikọtara ya na nchikota nke saịtị dị oke ala, adịghị ike, siri ike na nke siri ike. .Ozugbo anakọtara data niile, etinyere nyocha ihe nlere anya ATPD iji nyere aka nweta ozi gbasara ike mgbasa ozi nke molecule nyocha dị ka ọrụ nke okpomọkụ desorption ọ bụla.Nkesa ike mkpokọta site na ọnọdụ na-egosi ụkpụrụ acidity ndị a dabere na nkezi ụkpụrụ ike (na kJ/mol) (dịka mkpuchi elu θ = 0.5).
Dị ka mmeghachi omume nyocha, propene nọ n'okpuru mmiri mmiri nke isopropanol iji nweta ozi ndị ọzọ gbasara ọrụ nke ihe ndị a na-amụ.Nsonaazụ enwetara kwekọrọ na nha ATPD gara aga n'ihe gbasara ike na ụbara saịtị acid dị n'elu, ma meekwa ka o kwe omume ịmata ọdịiche dị n'etiti saịtị Brønsted na Lewis acid.
Ọgụgụ 1. (N'aka ekpe) Deconvolution nke profaịlụ ATPD site na iji ọrụ Gaussian (akara edo edo edo edo na-anọchite anya profaịlụ emepụtara, ntụpọ ojii bụ data nnwale) (n'aka nri) Amonia desorption ike nkesa ike na-arụ ọrụ na ebe dị iche iche.
Roberto Di Cio Faculty of Engineering, University of Messina, Contrada Dee Dee, Sant'Agata, I-98166 Messina, Italy
Francesco Arena.
Zoo nyocha.(February 9, 2022).Nlele nnwale nke usoro okpomọkụ-emebere desorption nke amonia iji mụọ njirimara acid nke elu dị iche iche nke ihe na-akpata.AZEweghachitere Septemba 7, 2023 site na https://www.azom.com/article.aspx?ArticleID=14016.
Zoo nyocha."Ntụle nnwale nke usoro nbibi Amonia akwadoro maka ikpo ọkụ maka ịmụrụ Njirimara Acid nke dị n'elu elu dị iche iche na-akpata."AZSeptemba 7, 2023
Zoo nyocha."Ntụle Nlebanya nke Ụzọ Mwepu Amonia A Haziri Okpomọkụ maka Ịmụ Njirimara Acid nke Elu Ọdịnihu Catalyst".AZhttps://www.azom.com/article.aspx?ArticleID=14016.(Nweta: Septemba 7, 2023).
Zoo nyocha.2022. Nlele nnwale nke usoro amonia desorption nke a na-eme ka okpomọkụ maka ọmụmụ ihe acidic nke ihe dị iche iche na-akpali akpali.AZoM, enwetara 7 Septemba 2023, https://www.azom.com/article.aspx?ArticleID=14016.
Oge nzipu: Sep-07-2023
