cataliste itwara na zeolite

Dukoresha kuki kugirango tunoze uburambe. Mugukomeza gushakisha kururu rubuga, wemera gukoresha kuki. Andi makuru.
Iyi ngingo yibanze ku miterere ya aside irike ya catisale ya okiside kandi ishyigikira (γ-Al2O3, CeO2, ZrO2, SiO2, TiO2, HZSM5 zeolite) no kugereranya kugereranya ubuso bwabo mugupima ubushyuhe bwateguwe na ammonia desorption (ATPD). ATPD nuburyo bwizewe kandi bworoshye aho ubuso, nyuma yo kuzuzwa na ammonia mubushyuhe buke, bugira ihinduka ryubushyuhe, bigatuma habaho desorption ya molekile ya probe kimwe no gukwirakwiza ubushyuhe.
Ukoresheje isesengura ryinshi kandi / cyangwa ryujuje ubuziranenge bwa desorption, amakuru arashobora kuboneka ku mbaraga za desorption / adsorption hamwe nubunini bwa ammonia yamamajwe hejuru (ammonia uptake). Nka molekile yibanze, ammonia irashobora gukoreshwa nka probe kugirango umenye acide yubuso. Aya makuru arashobora gufasha gusobanukirwa imyitwarire ya catalitiki yintangarugero ndetse ikanafasha guhuza neza synthesis ya sisitemu nshya. Aho gukoresha imashini gakondo ya TCD, imashini ya kane ya kane (Hiden HPR-20 QIC) yakoreshejwe muri icyo gikorwa, ihuza igikoresho cyo kwipimisha ikoresheje capillary ishyushye.
Gukoresha QMS bidufasha gutandukanya byoroshye amoko atandukanye yandujwe hejuru yubutaka adakoresheje imiti iyo ari yo yose ya shimi cyangwa umubiri ndetse numutego bishobora kugira ingaruka mbi kubisesengura. Gushiraho neza ubushobozi bwibikoresho bya ionisiyoneri bifasha mukurinda gucikamo ibice bya molekile zamazi hamwe no kuvangavanga nikimenyetso cya ammonia m / z. Amakuru yizewe kandi yizewe yubushyuhe bwateguwe na ammonia desorption data yasesenguwe hifashishijwe ibipimo ngenderwaho hamwe nibizamini byubushakashatsi, byerekana ingaruka zuburyo bwo gukusanya amakuru, gaze yabatwara, ingano y’ibice, hamwe na geometrike ya reaction, byerekana uburyo bworoshye bwakoreshejwe.
Ibikoresho byose byize bifite uburyo bugoye bwa ATPD buringaniye bwa 423-873K, usibye cerium, yerekana impinga ntoya ya desorption yerekana acide nkeya. Umubare wuzuye werekana itandukaniro ryo gufata ammonia hagati yibindi bikoresho na silika kurenza gahunda yubunini. Kubera ko ikwirakwizwa rya ATPD rya cerium rikurikira umurongo wa Gaussi utitaye ku buso bw’ubushyuhe no ku bushyuhe, imyitwarire y’ibikoresho biri kwigwa isobanurwa nkumurongo wimirimo ine ya Gaussiya ijyanye no guhuza amatsinda yoroheje, adakomeye, akomeye, kandi akomeye cyane. . Amakuru yose amaze gukusanywa, isesengura ryerekana imiterere ya ATPD ryakoreshejwe kugirango rifashe kubona amakuru ku mbaraga za adsorption ya molekile ya probe nkigikorwa cya buri bushyuhe bwa desorption. Ikwirakwizwa ryingufu zikwirakwizwa ahantu ryerekana indangagaciro zikurikira zishingiye ku gaciro kagereranijwe (muri kJ / mol) (urugero nko gukwirakwiza hejuru θ = 0.5).
Nka probe reaction, propene yakorewe umwuma wa isopropanol kugirango ibone andi makuru yerekeye imikorere yibikoresho byigwa. Ibisubizo byabonetse byari bihuye n'ibipimo byabanjirije ATPD ukurikije imbaraga n'ubwinshi bwa site ya acide yo hejuru, kandi byanashobokaga gutandukanya ibibanza bya acide ya Brønsted na Lewis.
Igishushanyo 1. (Ibumoso) Deconvolution yumwirondoro wa ATPD ukoresheje imikorere ya Gaussiya (umurongo utudomo wumuhondo ugereranya umwirondoro wakozwe, utudomo twumukara namakuru yubushakashatsi) (iburyo) Igikorwa cyo gukwirakwiza ingufu za Amoniya desorption ahantu hatandukanye.
Roberto Di Cio Ishami ryubwubatsi, kaminuza ya Messina, Contrada Dee Dee, Sant'Agata, I-98166 Messina, Ubutaliyani
Francesco Arena, Roberto Di Cio, Giuseppe Trunfio (2015) "Isuzuma ryikigereranyo ryuburyo bwa Amoniya Ubushyuhe-Bwateguwe na Desorption Uburyo bwo gukora iperereza kuri Acide yibintu bya Heterogeneous Catalyst Surface" Byakoreshejwe Catalysis A: Isubiramo 503, 227-236
Hisha isesengura. (Ku ya 9 Gashyantare 2022). Isuzuma ryuburyo bwubushyuhe bwa programme desorption ya ammonia kugirango yige imiterere ya acide yimiterere ya heterogeneous ya catalizator. AZ. Yakuwe ku ya 7 Nzeri 2023 avuye kuri https://www.azom.com/article.aspx?IngingoID=14016.
Hisha isesengura. “Isuzuma ryikigereranyo ryubushyuhe bwateguwe na Amoniya Desorption Uburyo bwo Kwiga Acide Ibintu bya Heterogeneous Catalyst Surface”. AZ. Ku ya 7 Nzeri 2023 .
Hisha isesengura. “Isuzuma ryikigereranyo ryubushyuhe-Porogaramu Yateguwe na Ammonia Desorption Uburyo bwo Kwiga Acide Ibintu bya Heterogeneous Catalyst Surface”. AZ. https://www.azom.com/article.aspx?IngingoID=14016. (Byemewe: Ku ya 7 Nzeri 2023).
Hisha isesengura. 2022. AZoM, yageze ku ya 7 Nzeri 2023, https://www.azom.com/article.aspx?Ar ArticleID = 14040.