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. Data ndị a nwere ike inye aka ịghọta omume catalytic nke ihe nlele ahụ 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 nkewa 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 ibu, nha nha, na geometry reactor, na-egosipụta mgbanwe nke usoro eji.
Ihe niile a na-amụ nwere ụdịdị ATPD dị mgbagwoju anya na-agbasa na 423-873K, ewezuga cerium, nke na-egosipụta ọnụ ọgụgụ dị warara dị warara edozira nke na-egosi otu 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, a na-etinye propene na mmiri mmiri nke isopropanol iji nweta ozi ndị ọzọ gbasara ọrụ nke ihe ndị a na-amụ. Nsonaazụ enwetara dabara 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. AZ Eweghachitere Septemba 7, 2023 site na https://www.azom.com/article.aspx?ArticleID=14016.
Zoo nyocha. "Ntụle nnwale nke usoro nbibi nke Amonia akwadoro nke okpomọkụ maka ịmụrụ Njirimara Acid nke dị n'elu elu dị iche iche na-eme ka ahụ". AZ Septemba 7, 2023
Zoo nyocha. "Ntụle Nlebanya nke Ụzọ Mwepu Amonia A Haziri Okpomọkụ maka Ịmụ Njirimara Acid nke Elu Ọdịnihu Catalyst". AZ https://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
